Revolving sentence examples

revolving
  • In revolving cranes ease of slewing can be greatly increased by the use of a live ring of conical rollers.

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  • Cranes may be divided into two main classes - revolving and non-revolving.

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  • 19) consists of a revolving table carrying five or six moulds.

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  • 4 is a diagram of a fixed hand revolving jib crane, of moderate size, as used in railway goods yards Fixed and similar places.

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  • The kilns are made with either fixed or revolving retorts.

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  • The hydraulic lifting cylinders are placed inside the revolving steel mast or post, and the cabin for the driver FIG.

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  • 18 shows a modern design of crane intended to command the maximum of yard space, and having some of the characteristics both of the Goliath and of the revolving jib crane, and fig.

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  • The mouth of the bottle is ground by a revolving iron cone, or mandrel, fed with sand and water and driven by steam.

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  • It is also the custom to balance a proportion of the reciprocating masses by balance weights placed between the spokes of the wheels, and the actual balance weight seen in a driving-wheel is the resultant of the separate weights required for the balancing of the revolving parts and the reciprocating parts.

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  • When the four cranks are placed with two pairs at 180°, the pairs being at 90°, the forces are balanced without the introduction of a hammer-blow, but there remain large unbalanced couples, which if balanced by means of revolving weights in the wheels again reintroduce the hammerblow, and if left unbalanced tend to make the engine oscillate in a horizontal plane at high speed.

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  • Among the more remarkable phenomena of the hotter seas of Asia must be noticed the revolving storms or cyclones, which are of frequent occurrence in the hot months in the Indian Ocean and China Sea, in which last they are known under the name of typhoon.

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  • The surface formed by revolving the catenary about its directrix is named the alysseide.

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  • Granulated sugar, so called, is made by passing the crystals, after leaving the centrifugals, through a large and slightly inclined revolving cylinder with a smaller one inside heated by steam.

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  • On the 8th of March about 1 p.m., the "Merrimac," commanded by Commodore Franklin Buchanan (1795-1871), steamed down the Elizabeth accompanied by two one-gun gun-boats, to engage the wooden fleet of the Federals, consisting of the frigate "Congress," 50 guns, and the sloop "Cumberland," 30 guns, both sailing vessels, anchored off Newport News, and 1 For the idea of the low free-board and the revolving turret Ericsson was indebted to Theodore R.

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  • Wheels creak on their axles as the cogs engage one another and the revolving pulleys whirr with the rapidity of their movement, but a neighboring wheel is as quiet and motionless as though it were prepared to remain so for a hundred years; but the moment comes when the lever catches it and obeying the impulse that wheel begins to creak and joins in the common motion the result and aim of which are beyond its ken.

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  • But in other cases the encrusted star settles in that portion of the revolving vortex which has a velocity equivalent to its own, and so continues to revolve in the vortex, wrapped in its own firmament.

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  • high, with a revolving white light visible 18 m.

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  • load is suspended from the crane jib; this jib is attached at the lower end to the side frames, and the upper end is supported by tierods, connected to the framework, the whole revolving together.

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  • As the small filings produced by friction seek to pass through the interstices between the rapidly revolving spherical particles in the vortex, they are detained and become twisted and channelled in their passage, and when they reach the edge of the inner ocean of solar dust they settle upon it as the froth and foam produced by the agitation of water gathers upon its surface.

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  • With portable cranes means must be provided to ensure the requisite stability against overturning; this is done by weighting the tail of the revolving part with heavy weights, and in steam cranes the FIG.

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  • The crystallizers are long, horizontal, cylindrical or semi-cylindrical vessels, fitted with a strong horizontal shaft running from end to end, which is kept slowly revolving.

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  • The dry sugar then passes into a rotating screen fitted with two meshes, so that three grades of sugar are obtained, the coarsest being that which falls out at the lower end of the revolving screen.

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  • The bodies of this class consist of eight major planets moving round the sun at various distances, and of an unknown number of minor planets, much smaller than the major planets, forming a separate group. Thirdly, satellites, or secondary planets revolving around the major planets, and therefore accompanying them in their revolutions around the sun.

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  • This agent has been applied in various ways, in machines which either imitate the action of the collier by cutting with a pick or make a groove by rotating cutters attached to an endless chain or a revolving disk or wheel.

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  • The corresponding element of the revolving figure is approximately a rectangle of area h.

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  • 0, where S is the area of the revolving figure, and y is the distance of its centroid from the axis.

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  • The rough edges of the bars are removed by a circular revolving file, and the hollow ends are cut off.

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  • Here A is the iron cover surrounding the furnaces, B is the revolving lid of a furnace, save time and to reduce the loss of the precious metals.

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  • At the Royal Mint the blanks are passed between the parallel faces of a revolving steel plate and fixed block.

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  • The blanks are charged into a hopper at one end of the furnace and conveyed towards the other end by a revolving Archimedean screw.

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  • At the end of 1905, however, about 37 had been certainly recognized, besides some outlying cases of indeterminate type, in which continuous occultations by two bright stars, revolving in virtual contact, are doubtfully supposed to be in progress.

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  • and movable perforate plates and perforated rings, both the movable plates being driven by the same current and revolving about a common axis.

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  • To the centre of this membrane is attached a small feather-fibre, which, when the reflector is suitably placed, touches lightly the surface of the revolving cylinder.

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  • To show its intermittent character its reflection is viewed in a revolving mirror.

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  • The flame appears to lengthen, but if the reflection is viewed in a vertical mirror revolving about a vertical axis or in Koenig's cube of mirrors, it is seen that the flame is really intermittent, jumping up and down once with each vibration, sometimes apparently going within the jet tube at its lowest point.

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  • When the flames are viewed in a revolving mirror and the pipes are blown, each image of one flame lies between two images of the other.

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  • All sections of the 1 The surfaces formed by revolving a circle about any chord also received attention at the hands' of the Greeks.

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  • A circular revolving platform rests on the pivot and rollers.

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  • A toothed arc fixed to the revolving platform or to the live ring serves to give motion to the bridge.

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  • The main girders rest on the revolving platform, and the ends of the bridge are circular arcs fitting the fixed roadway.

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  • Modern theory accepts the deduction, but ascribes the momentum to the revolving ions in the molecules of matter traversed by the light; for the magneto-optic effect is present only in material media.

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  • The modification of the spectrum of a radiating gas by a magnetic field, such as would result from the hypothesis that the radiators are the system of revolving or oscillating electrons in the molecule, was detected by P. Zeeman in 1896, and worked up, in conjunction with H.

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  • having two components revolving about their common centre of gravity - and the first to have its orbit calculated.

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  • There is a dorsal interruption to the disk, in volving both trochus and cingulum and groove in this case the two halves of the disk may be developed in lobes, flower-shaped in Melicerta ringens, but often rounded and projecting like kettledrums. These give a strong impression of two crown wheels revolving in the same sense.

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  • Herschel, who discovered that many of them formed systems of two stars revolving round their common centre of gravity.

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  • wide on the Osage river near its confluence with the Missouri, where a hollow, wooden, cylindrical sector, stiffened inside by iron framing and revolving on an axis laid along the crest of the solid part of the weir, fits into a drum at the back „ vim 4 ..

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  • This appointment was inaugurated by two events, - a course of eight lectures on sound, which proved no success and was not repeated, and the determination by means of a revolving mirror of the speed of electric discharge in conductors, a piece of work leading to enormously important results.

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  • The spinning or throwing which follows is done on a frame with upright spindles and flyers, the yarn as it is twisted being drawn forward through guides and wound on revolving bobbins with a reciprocating motion.

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  • When the waste contains any large percentage of worm or chrysalis, it is taken to a " cocoon beater," a machine which has a large revolving disk on which the silk is put, and while revolving slowly is beaten by a leather whip or flail, which loosens the silk and knocks out the wormy matter.

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  • The doors had pivots of bronze revolving in well-fitted bronze cup-like sockets let into the thresholds.

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  • There are three eyepieces which are mounted on a revolving sleeve in such a way that any one of them can be quickly brought into use, to give the magnification suitable to the height of the mast.

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  • Usually a revolving scale round the edge of the field shows the direction of the view.

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  • 488); but as these made up only nine revolving bodies he conceived, in accordance with his number theory, a tenth, which he called counter-earth, avriXOccv.

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  • The Hanoverian fort and batteries, which formerly protected the town, have been removed, and their place is supplied by four modern forts, with revolving turtleback turrets, lower down.

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  • Hawksbee in 1709 also used a revolving glass globe.

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  • This "revolving doubler," according to the description of Professor S.

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  • 3), each two inches in diameter and separately supported on insulating arms in the same plane, so that a third revolving plate B may pass very near them without touching.

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  • A brass ball D two inches in diameter is fixed on the end of the axis that carries the plate B, and is loaded within at one side, so as to act as a counterpoise to the revolving plate B.

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  • Nicholson thus described the operation of his machine: "When the plates A and B are opposite each other, the two fixed plates A and C may be considered as one mass, and the revolving plate B, together with the ball D, will constitute another mass.

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  • The rotation, by destroying the contacts, preserves this unequal distribution, and carries B from A to C at the same time that the tail K connects the ball with the plate C. In this situation, the electricity in B acts upon that in C, and produces the contrary state, by virtue of the communication between C and the ball; which last must therefore acquire an electricity of the same kind with that of the revolving plate.

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  • Here, if we attend to the effect of the whole revolution, we shall find that the electric states of the respective masses have been greatly increased; for the ninety-nine parts in A and B remain, and the one part of electricity in C has been increased so as nearly to compensate ninety-nine parts of the opposite electricity in the revolving plate B, while the communication produced an opposite mutation in the electricity of the ball.

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  • - Nicholson's Revolving Doubler.

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  • The action of the machine is as follows: Suppose one paper armature to be charged positively, it acts by induction on the right hand comb, causing negative electricity to issue from the comb points upon the glass revolving disk; at the same time the positive electricity passes through the closed discharge circuit to the left comb and issues from its teeth upon the part of the glass disk at the opposite end of the diameter.

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  • Each upright bearing carrying the shafts of the revolving disks also carries a neutralizing conductor or wire ending in a little brush of gilt thread.

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  • - Plan of Burden's piling and re-rolling, into the Excentric Revolving Squeezer final shape in which it is actually for Puddled Balls.

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  • The skin of the object, D, which is undergoing rolling, technically called " the piece," is drawn forward powerfully by the friction of the revolving.

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  • Special grease is then rubbed in and the skin placed in a machine which softly and continuously beats in the softening mixture, after which it is put into a slowly revolving drum, fitted with wooden paddles, partly filled with various kinds of fine hard sawdust according to the nature of the furs dealt with.

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  • Subsequently the hard top hairs are taken out as in the case of otters and beavers and the whole thoroughly cleaned in the revolving drums. The close underwool, which is of a slightly wavy nature and mostly of a pale drab colour, is then dyed by repeated applications of a rich dark brown colour, one coat after another, each being allowed to thoroughly dry before the next is put on, till the effect is almost a lustrous black on the top. The whole is again put through the cleaning process and evenly reduced in thickness by revolving emery wheels, and eventually finished off in the palest buff colour.

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  • in.; the governor is carried within the driving pulley shown at the right-hand end, while the working revolving cylinders are carried inside the boxed-in flywheel at the left-hand end, the relay cylinder and its attachments being fixed to the bed-plate in front of the flywheel.

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  • in diameter) with the revolving part of the dynamo mounted on the upper end of the shaft weigh about 152,000 lb, a special device, since adopted in other similar power plants, was designed to balance in part this.

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  • For rock drills, and revolving saws for stone cutting, either diamond, bort or carbonado is employed, set in steel tubes, disks or bands.

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  • The placer-miner's cradle and rocking-trough were replaced by puddling troughs stirred by a revolving comb worked by horse power; reservoirs were constructed for the scanty water-supply, bucket elevators were introduced to carry away the tailings; and the natives were confined in compounds.

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  • These are shallow cylindrical troughs containing muddy water in which the diamonds and other heavy minerals (concentrates) are swept to the rim by revolving toothed arms, while the lighter stuff escapes near the centre of the pan.

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  • (The architect being at that time also the contractor.) The chapters are -- (1) on various machines, such as scaling-ladders, windmills, &c.; (2) on windlasses, axles, pulleys and cranes for moving heavy weights, such as those used by Chersiphron in building the great temple of Diana at Ephesus, and on the discovery by a shepherd of a quarry of marble required to build the same temple; (3) on dynamics; (4) on machines for drawing water; (5) on wheels for irrigation worked by a river; (6) on raising water by a revolving spiral tube; (7) on the machine of Ctesibius for raising water to a height; (8) on a very complicated water engine, the description of which is not intelligible, though Vitruvius remarks that he has tried to make the matter clear; (9) on machines with wheels to register the distance travelled, either by land or water; (10) on the construction of scorpiones for hurling stones; (11) and (12) on balistae and catapults; (13) on battering rams and other machines for the attack of a fortress; (14) on shields (testudines) to enable soldiers to fill up the enemy's ditches; (15) on other kinds of testudines; (16) on machines for defence, and examples of their use in ancient times.

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  • b is the bob of a pendulum, with its style s passing through a slot in the short arm of a light lever, sop, pivoted at o, and with its outer end resting upon a revolving cylinder covered with smoked paper.

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  • The conception and attributes of the figure are taken, as has lately been recognized, from a description in the "Manto" of Politian: the goddess, to whose shoulders are appended a pair of huge wings, stands like Fortune on a revolving ball, holding the emblems of the cup and bridle, and below her feet is spread a rich landscape of hill and valley.

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  • One of the simplest consists of a plane mirror rigidly connected with a revolving axis so that the angle be tween the normal to the mirror and the axis of the instrument equals half the sun's polar distance, the mirror being adjusted so that the normal has the same right ascension as the sun.

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  • By the use of a revolving mirror similar to that used by Sir Charles Wheatstone for measuring the rapidity of electric currents, he was enabled in 1850 to demonstrate the greater velocity of light in air than in water, and to establish that the velocity of light in different media is inversely as the refractive indices of the media.

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  • With Wheatstone's revolving mirror he in 1862 determined the absolute velocity of light to be 298,000 kilometres (about 185,000 m.) a second, or 10,000 kilom.

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  • A sheet of metal set revolving at a high speed in a lathe is bent over into cup-shaped forms, with numerous mouldings, by a blunt hardened tool.

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  • wide, which is made up of a central pan (e), and a series of concentric compartments (c'), (c 2), (c 3), and which is supported on a frame (d d), revolving round a perpendicular axis on the wheels (n n).

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  • The hand-wrought black-ash furnace has been mostly superseded in the large factories by the revolving black-ash furnace, shown in fig.

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  • - Revolving Black-ash Furnace.

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  • - In all the previously described types of telescope mounting the axis of the instrument is either pointed directly at the object or to the pole; in the latter case the rays from the star under observation are reflected along the polar axis by a mirror or mirrors attached to or revolving with it.

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  • (Reclus), and a lighthouse rises from within the fort carrying a revolving light that can be seen 25 m.

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  • Ever since the variability of Algol was observed it was suspected to be due to a partial eclipse of the star by a dark body nearly as large as itself revolving round it; but the explanation remained merely a surmise until K.

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  • Phaenomena, 4-5; prop. 2.) What Newton did, in short, was to prove by analysis that the planets, revolving by Kepler's astronomical laws round the sun, have motions such as by mechanical laws are consequences of a centripetal force to the sun.

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  • Crescent (1848-1849); afterwards he passed his time carpentering, building and selling small houses in Brooklyn (1851-1854) in the meanwhile writing for the magazines and reviews and turning out several novels, and finally revolving in his mind the scheme of his Leaves of Grass.

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  • He was asked to edit the Univers, and to take a chair in the university of Louvain, but he declined both appointments, and in 1838 set out for Rome, revolving a great scheme for christianizing France by restoring the old order of St Dominic. At Rome he donned the habit of the preaching friar and joined the monastery 'of Minerva.

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  • The form of the monument corresponds to that which we are told was given to the revolving wooden pillars on which the laws of Solon were painted.

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  • When both are near the lowest point the horizontal projection of the path is approximately an ellipse, as shown in 13; a closet investigation shows that the ellipse is to be regarded as revolving about its centre with the angular velocity ~ab~~/l2, where a, b are the semi-axes.

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  • Using this principle the method of finding the balance weights to be added to a given system of reciprocating weights in order to produce a system of forces on the frame continuously in equilibrium is exactly the same as that just explained for a system of revolving weights, because for the purpose of finding the balance weights each reciprocating weight may be supposed attached to the crank pin which operates it, thus forming an equivalent revolving system.

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  • The balance weights found as part of the equivalent revolving system when reciprocated by their respective crank pins form the balance weights for the given reciprocating system.

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  • The moving parts of the engine are then divided into two complete and independent systems, namely, one system of revolving weights consisting of crank pins, crank arms, &c., attached to and revolving with the crank shaft, and a second system of reciprocating weights consisting of the pistons, cross-heads, &c., supposed to be moving each in its line of stroke with simple harmonic motion.

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  • The balance weights are to be separately calculated for each system, the one set being added to the crank shaft as revolving weights, and the second set being included with the reciprocating weights and operated by a properly placed crank on the crank shaft.

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  • In the case of locomotives the balance weights required to balance the pistons are added as revolving weights to the crank shaft system, and in fact are generally combined with the weights required to balance the revolving system so as to form one weight, the counterpoise referred to in the preceding section, which is seen between the spokes of the wheels of a locomotive.

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  • Revolving Pendulum.

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  • This combination is Z called a revolving, centrifugal, or conical pendulum.

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  • Revolving pendulums are usually constructed with pairs of rods y b and bobs, as OB, Ob, hung at opposite sides of the spindle, that the centrifugal forces exerted at the point 0 may balance A each other.

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  • If the rod of a revolving pendulum be jointed, as in fig.

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  • C a A revolving pendulum is an essential part of most of the contrivances called governors, for regulating the speed of prime movers, for further particulars of which see STEAM

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  • By comparing this with the expression for the centrifugal force (wap/g), it appears that the actual energy of a revolving body is equal to the potential energy Fp/2 due to the action of the deflecting force along one-half of the radius of curvature of the path of the body.

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  • The product wp/g, by which the half-square of the angular velocity is multiplied, is called the moment of inertia of the revolving body.

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  • Otto von Guericke (1602-1686) constructed the first electrical machine with a revolving ball of sulphur (see Electrical Machine), and noticed that light objects were repelled after being attracted by excited electrics.

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  • The breaking is done by passing the stalks between grooved or fluted rollers of different pitches; these rollers, of which there may be from 5 to 7 pairs, are sometimes arranged to work alternately forwards and backwards in order to thoroughly break the woody material or " boon " of the straw, while the broken " shoves " are beaten out by suspending the fibre in a machine fitted with a series of revolving blades, which, striking violently against the flax, shake out the bruised and broken woody cores.

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  • In this class of machine various improvements were made from time to time by different manufacturers, each profiting by the experiences of the others, and two kinds of such revolving presses may now be given as examples.

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  • of New York, and subsequently of London, had constructed, to meet the increased demands of newspapers, the " Hoe Type Revolving Machine," one good point of which was an apparatus for securely fastening in the type on a large central cylinder fixed horizontally.

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  • As will be observed, the only differences in principle between these two type revolving machines were in the positions of the respective cylinders, and the fixing of the type to form a printing surface.

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  • These plates were then fixed on the beds of the Hoe type revolving machine, which were adapted to receive them instead of the movable typeformes previously used.

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  • The process of unwinding these long reels of paper in the course of printing takes only half an hour; they are arranged on a revolving stand so that directly they are FIG.

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  • In the White-Howell revolving furnace with lifters - a modification of the Oxland - the ore is fed and discharged in a continuous stream.

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  • The M`Dougall furnace is turret-shaped, and consists of a series of circular hearths, on which the ore is agitated by rakes attached to revolving arms and made to fall from hearth to hearth.

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  • It has been modified by Herreshoff, who uses a large hollow revolving central shaft cooled by a current of air.

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  • In some the rakes are attached to rigid frames, with a reciprocating motion, in others to cross-bars moved by revolving chains.

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  • In 1838 he communicated to the Academy the details of his apparatus, which utilized the revolving mirrors employed by Sir C. Wheatstone in 1835 for measuring the velocity of the electric discharge; but owing to the great care required in the carrying out of the project, and to the interruption to his labours caused by the revolution of 1848, it was the spring of 1850 before he was ready to put his idea to the test; and then his eyesight suddenly gave way.

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  • Now let us consider the surfaces of revolution formed by this system of catenaries revolving about the directrix of the two catenaries of equal tension.

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  • The apparatus for drying ore and salt varies greatly, drying-floors, dry-kilns and continuous mechanical reverberatory furnaces with stationary and revolving hearths being used.

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  • In later installations, under the 1895 patent, the anodes are placed horizontally on a porous tray resting within the solution above an endless silver band revolving, also horizontally, over rollers placed near the ends of a long shallow tank.

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  • The revolving band forms the cathode, and at one end makes a rubbing contact with a travelling belt placed at an angle so that the crystals of silver detached thereby from the cathode are conveyed by it from the solution and deposited outside.

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  • In the upper compartment are two large revolving horizontal cathode cylinders.

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  • It consists of a smoked cylinder revolving by means of clockwork at a known speed, and a style or pen which inscribes its surface by scratching or brushing away the lampblack.

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  • The secondary action, or the revolving of Extension (elbow).

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  • Phillips succeeded, it is stated, in elevating a steam model by the aid of revolving fans, which according to his account flew across two fields after having attained a great altitude; and in 1859 H.

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  • Blaise Pascal determined the area of the section made by any line parallel to the base and the volumes and centres of gravity of the solids generated by revolving the curve about its axis and base.

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  • Finding it impossible to make himself fairly heard in the matter, Corneille (who had retired from his position among the "five poets") withdrew to Rouen and passed nearly three years in quiet there, perhaps revolving the opinions afterwards expressed in his three Discours and in the Examens of his plays, where he bows, somewhat as in the house of Rimmon, to "the rules."

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  • That described requires a diagram revolving once in a few hours, otherwise the time scale will be too close; but the ordinary diagram revolving once in 24 hours is often used quite effectively in night inspections by only closing those stop-cocks which are actually passing water.

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  • A device of more recent introduction is an electrically-driven charging machine, in which the centrifugal force created by a fly-wheel revolving at high speed is applied to drive coal into the retort.

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  • Those known to be revolving round certain of the stars are far larger in proportion to their central bodies than our planets are in respect to the sun; for were it otherwise we should never be able to detect their existence.

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  • If a planet rotates on its axis so rapidly as to have a considerable ellipticity, and if it has satellites revolving very near the plane of the equator, the combined actions of the sun and of the equatorial protuberances may be such that the whole system will rotate almost as if the planes of revolution of the satellites were solidly fixed to the plane of the equator.

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  • By revolving on this axis it follows a star in its diurnal motion, so that the star is kept in the field of view notwithstanding that motion.

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  • The sun and moon and the five planets were, with this end in view, accommodated each with a set of variously revolving spheres, to the total number of 27.

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  • The landgrave built at Cassel in 1561 the first observatory with a revolving dome, and worked for some years at a star-catalogue finally left incomplete.

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  • from the town; it is a mass of serpentine rocks, off which lie the North and South Stacks, each with a lighthouse with a revolving light, visible for 20 m., and 197 ft.

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  • In most cases such wheels merely have earthenware pitchers attached to their circumference by means of wisps of esparto, and are turned by a horse harnessed to a long arm fitted to a revolving shaft.

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  • The frame cases - wired on both sides - are hung at the angles of a revolving ring of iron, and the reversing process is so simple and effective that the " Cowan " reversible frame has been adopted in all the best machines.

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  • In the case of a single body revolving around the sun this plane is that of its orbit.

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  • It seems not unlikely that the final conclusion will be that instead of the reflecting matter being composed of solid particles it is an exceedingly tenuous gaseous envelope surrounding the sun and revolving on an axis the mean position of which is between that of the sun's equator and that of the invariable plane of the solar system.

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  • Of supreme importance is the fertile conception of the planets revolving about the sun in elliptic orbits.

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  • For slight magnifications a revolving plane mirror fixed below the object for altering the direction of the rays suffices.

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  • This concentration is most easily produced by sliding or revolving diaphragms. A series of holes of different sizes perforate a revolving disk below the stage plate at an equal radial distance from the axis of the disk, so that the holes can be brought under the preparation in turn, the centre of the diaphragms always being a continuation of the optical axis of the microscope.

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  • Further, a revolving stage plate provided with a graduation B is used to determine the angle in crystals.

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  • To obviate mistakes the optical axis of the microscope must coincide with the revolving axis of the plate, and the revolving plate has a central position C to keep this condition fulfilled.

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  • A cross-table is very convenient for this calculation, for with the aid of the two movable slides situated in the plane of the plate and at right angles to one another, the point where the two crystal edges intersect can be quickly and correctly brought into the revolving axis of the plate.

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  • The sequence of operations in treating oil seeds, oil nuts, &c., for the separation of their contained oils is at the present time as follows: As a preliminary operation the oil seeds and nuts are freed from dust, sand and other impurities by sifting in an inclined revolving cylinder or sieving machine, covered with woven wire, having meshes varying according to the size and nature of the seed operated upon.

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  • In another form devised by Callendar," a revolving contact disk is placed on the shaft of an alternator, or of a synchronous motor driven by the alternating current under test.

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  • As the brushes are slowly shifted over on the revolving contact so as to select different phases of the alternating electromotive force, the pen follows and draws a curve delineating the wave form of that electromotive force or current.

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  • To diminish the item of expenditure on this head, various kinds of mechanical furnaces have been adopted, all of which can be classified under three heads of gravitating furnaces, mechanical stirrers and revolving furnaces.

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  • Revolving furnaces, the third and most important division of mechanical furnaces, are of two kinds.

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  • The Falkirk Wheel, opened in May 2002, is the world's first revolving boatlift.

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  • At the bottom is a revolving nosepiece, or as it is sometimes called, the " objective changer " .

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  • condensead to be changed to revolving condensing apparatus.

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  • conglomeration of musicians that over the years have had a constantly revolving line-up.

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  • The Pirates are basically a loose conglomeration of musicians that over the years have had a constantly revolving line-up.

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  • The revolving door of re-offending is something that criminal justice professionals have witnessed for too long.

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  • The ASAP uses a revolving toothed wheel to grip the rope and appears virtually foolproof to use.

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  • grapple in public libraries are now grappling with a whole new set of issues revolving around the provision of community based networked services.

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  • The conference focussed on the new ' Revolving Door ' system between prison, homelessness hostels and hospitals.

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  • This action of the light is remarkable, when we reflect how little the leaves are developed on the young and thin revolving internodes.

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  • When objectives are changed by turning the revolving nosepiece, the object should also remain centered.

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  • An alternative method to create parts or features that have rotational symmetry is to form a protrusion by revolving rather than extruding.

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  • For example when science proved that earth revolved around the sun instead of the universe revolving around the earth.

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  • revolving around a central theme.

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  • revolving around the question of what is.

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  • revolving turret.

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  • revolving doors in the lobby.

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  • revolving globe had gone, possibly to be recycled for the war effort.

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  • revolving restaurant, over 1000 feet up.

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  • revolving hooks are turned either by hand or by a small motor, twisting the yarns together to form a strand.

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  • revolving circular blade for cutting straight lines through sheets of board.

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  • They do not possess the power of spontaneously revolving.

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  • The moon is slowly revolving to reveal its hidden face.

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  • Circular saws These are the ones with a rapidly revolving circular blade for cutting straight lines through sheets of board.

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  • On the traffic front and pedestrianization that is a along story mainly revolving around East Lothian Council.

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  • Sometimes electronics of old time synthesizer pushes lead guitars into outer space and riff ever revolving begins again.

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  • The thoughts kept revolving in his head, day after day, night after night.

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  • They deny that the sun stood still which means the earth stopped revolving in Joshua 10 and nobody fell off.

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  • The Foundation Center should mean that soon an important slice of it will start revolving around Goodwood.

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  • Two 12 inch guns would be housed in a revolving turret.

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  • The velocity of rotation of the micrometer-screw could therefore be varied for stars of different declination by varying the distance from the apex at which the revolving disk presses upon the revolving cone.

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  • In free-barrel cranes the lifting barrel is connected to the revolving shaft by a powerful friction clutch; this, when interlocked with the brake and controller, renders electric cranes exceedingly rapid in working, as the barrel can be detached and lowering performed at a very high speed, without waiting for the lifting motor to come to rest in order to be reversed.

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  • There are many other important points of crane construction too numerous to mention here, but it may be said generally that the advent of electricity has tended to increase speeds, and in consequence great attention is paid to all details that reduce friction and wear, such as roller and ball bearings and improved methods of lubrication; and, as in all other quick-running machinery, great stress has to be laid on accuracy of workmanship. The machinery, thus being of a higher class, requires more protection, and cranes that work in the open are now fitted with elaborate crane-houses or cabins, furnished with weather-tight doors and windows, and more care is taken to provide proper platforms, hand-rails and ladders of access, and also guards for the revolving parts of gearing.

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  • Besides the motions of lifting and revolving, there is provided a so-called " racking " motion, by which the lifting crab, with the load suspended, can be moved in and out along the j ib without altering the level of the load.

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  • Another type of fixed revolving crane is the foundry or smithy crane (fig.

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  • duced by rapidly revolving the armature of an electromagnet in front of the poles.

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  • These pairs are laid up symmetrically into cables, each layer being protected with an additional covering of paper and all adjacent layers revolving with an opposite twist.

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  • When the four cranks are placed with two pairs at 180°, the pairs being at 90°, the forces are balanced without the introduction of a hammer-blow, but there remain large unbalanced couples, which if balanced by means of revolving weights in the wheels again reintroduce the hammerblow, and if left unbalanced tend to make the engine oscillate in a horizontal plane at high speed.

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  • Viewed as a question in probabilities, we calculate the chance that five hundred bodies revolving round the sun shall all be moving in the same direction.

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  • The armillary sphere survives as useful for teaching, and may be described as a skeleton celestial globe, the series of rings representing the great circles of the heavens, and revolving on an axis within a horizon.

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  • " Openrunning " fans have no peripheral casing, and discharge freely throughout their entire circumference; in " closed " fans the revolving part is completely enveloped by a spiral casing opening at one point into a discharge chimney.

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  • It is named the antifriction curve, since a pivot and step having the form of the surface generated by revolving the curve about its vertical axis wear away equally (see MECHANICS: Applied).

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  • The abrasion is effected by pressing the glass against the edge of wheels, or disks, of hard material revolving on horizontal spindles.

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  • Inside a cylinder ?1 = - I iR (' x + yi) 2a2 /(a2 +b 2 '), (Io) 92+1 i 2 i = I ZR (x + yi) 2b2 I (a2 +b 2), (21) and for the interspace, the ellipse being fixed, and a l revolving with angular velocity R (1 +11/11= - giRc 2 sh 2 (n-a+ i)(ch 2a+I)/sh 2 (a i -a), (12) 42+1,'21 = *iRc 2 sh 2(na+Ei)(ch 2a-1)/sh 2(a i - a), (13) satisfying the condition that 4/ 1 and ' // 2 are zero over n = a, and over n =a 1 constant values.

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  • With the fixed retorts these valves are worked from time to time by the attendant, but with revolving retorts they are worked continuously and automatically and allow from sixteen to twenty-four ounces of char to escape per minute from each cooler, and so make room in the retort above for a corresponding quantity to enter from the drying floor.

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  • Timby (1819-1909), who in 1843 had filed a caveat for revolving towers for offensive or defensive warfare whether placed on land or water, and to whom the company building the "Monitor" paid $5000 royalty for each turret.

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  • Mimetic posture-dances (Shosagoto) were always introduced as interludes; past and present indiscriminately contributed to the playwrights subjects; realism was carried to extremes; a revolving stage and all mechanical accessories were supplied; female parts were invariably taken by males, who attained almost incredible skill in these simulations; a chorusrelic of the Nochanted expositions of profound sentiments or thrilling incidents; and histrionic talent of the very highest order was often displayed.

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  • In another form, a revolving contact is used driven by an electric motor, which consists of an insulating disk having on its surface slips of metal and three wire brushes a, b, c (see fig.

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  • In marking machines in some foreign mints the groove is in the periphery of the revolving wheel, and the grooved block is curved (fig.

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  • The phonograph may be regarded as an instrument of this class, in that it records vibrations on a revolving drum or disk.

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  • All the experiments yet made concur to prove that these two masses will not possess the same electric state ....The redundant electricities in the masses under consideration will be unequally distributed; the plate A will have about ninety-nine parts, and the plate C one; and, for the same reason, the revolving plate B will have ninety-nine parts of the opposite electricity, and the ball D one.

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  • He was assisted to detect the small potential differences then in question by the use of a multiplying condenser or revolving doubler (see Electrical Machine).

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  • As early as 1860 Newcomb communicated an important memoir to the American Academy, 4 On the Secular Variations and Mutual Relation of the Orbits of the Asteroids, in which he discussed the two principal hypotheses to account for the origin of these bodies - one, that they are the shattered fragments of a single planet (Olbers' hypothesis), the other, that they have been formed by the breaking up of a revolving ring of nebulous matter.

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  • Before the general introduction of rotary machines which print from curved stereotype plates from an endless web or reel Type of paper (see below), several other presses of a revol- Revolving ving character were made, to some extent based on Nicholson's ideas.

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  • Another explanation connects the story with the practice (among certain peoples of central Europe) of carrying a blazing, revolving wheel through fields which needed the heat of the sun, the legend being invented to explain the custom and subsequently adopted by the Greeks (see Mannhardt, Waldand Feldkulte, ii.

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  • Krohnke into Copiapo, Chile, in 1860, the silver mineral of the pulverized ore is decomposed in a revolving barrel by a hot solution of cuprous chloride in brine in the presence of zinc or lead and quicksilver (see B.

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  • Speaking in the most comprehensive way, and making an exception of the ethereal medium (see Aether), which, being capable of experimental study, is not included in the subject of astronomy, we may say that the great masses of matter which make up the universe are of two kinds: - (t) incandescent bodies, made visible to us by their own light; (2) dark bodies, revolving round them or round each other.

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  • The most widely used is the revolving changer (fig.

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  • In addition, temporary exhibitions are to be created regularly revolving around a central theme.

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  • Boehme 's is a satisfactory solution, in its way, all revolving around the question of what is.

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  • I headed him off at the revolving doors in the lobby.

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  • The revolving globe had gone, possibly to be recycled for the war effort.

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  • We had lunch in the 360° revolving restaurant, over 1000 feet up.

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  • The revolving hooks are turned either by hand or by a small motor, twisting the yarns together to form a strand.

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  • Unlike revolving bank cards, your purchasing capabilities are limited to the amount of money you have deposited with the card issuer.

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  • You should always have some "wiggle room" on your revolving accounts.

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  • Information regarding revolving debt can be found in a wide variety of places including the Internet and magazines.

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  • Gas cards are best for people who don't mind putting fuel and convenience store purchases on a revolving account that accrues interest if not paid in full each month.

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  • These cards do not have revolving balances attached to them, but instead have an available balance that is loaded onto the account by the parent or teenager.

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  • These sections include your installment accounts, revolving accounts and public record information.

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  • Romance in celebrity circles seems to be a revolving door, with a constantly changing cast of characters.

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  • Miley World - Revolving mostly around Miley Cyrus, but has plenty of Hannah information as well.

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  • With so many arrests revolving around booze and drugs, it's hard to keep track.

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  • Matthew McConaughey - Tinseltown's shirtless stud is afraid of revolving doors and tunnels.

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  • Check the revolving selection; when an item is sold, there is usually not another one in stock.

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  • Sierra Trading Post has a revolving selection of toddler snowsuits, ski jackets, and snow pants.

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  • With so many new regulations revolving around business finance, obtaining an accounting MBA is very worthwhile.

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  • Organized activities revolving around teens' interests, including computer classes, dance lessons, sports competitions, and trivia contests.

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  • A revolving door of musicians came and went through the lineup as personal problems and health issues complicated the band's ability to keep making music.

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  • You should also periodically check websites like Start Sampling because they offer a wide variety of free magazine subscriptions on a revolving basis.

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  • You may see an increase in great promotions revolving around plans with two or more phones.

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  • In fact, according to Xcomomy, social sites revolving around smartphones were the fourth most-visited pages in 2008.

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  • There are definite budgetary and health concerns revolving around the Brazilian blowout trend.

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  • This agency enforces the laws revolving around immigration and customs and protect Federal facilities.

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  • It's set up like a revolving account, allowing you to borrow from the equity that has built up in your home.

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  • There are two cases revolving around swimsuit controversy that are very different.

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  • Some models in the series come with a revolving rotisserie attachment.

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  • A Christmas Ornament has specially made ornaments revolving around American government.

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  • Syriana has a politically driven quartet of plots revolving around the oil industry and the intricate relationship the four main players have with each other, the industry, and the world as a whole.

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  • As with most soap operas, Home and Away has a revolving door.

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  • Sometimes the cast list on soap opera is a revolving door.

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  • On the air since late 1995, the program has been a home for a revolving cast of characters.

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  • Coronation Street has been on the air since 1960, and has seen numerous cast members pass through its revolving doors over the years.

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  • What's more, the show also boasts a revolving door of recurring characters that make appearances from season-to-season.

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  • For more information on the revolving EastEnders cast, read Albert Square & Me: The Actors of EastEnders by Larry Jaffee.

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  • The longevity of One Tree Hill saw it through merging networks (WB to CW), changing leads (Chad Michael Murray and Hilarie Burton's departure) and a revolving primetime schedule.

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  • At several studios in Queens, such certification classes are offered on a revolving basis.

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  • R1 or I1 indicates good payment history within 30 days on a revolving or installment account.

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  • Arranging for financing is part of a new business venture, and a number of states with small business start up revolving loans provide much-needed assistance.

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  • State-funded loans such as these are considered "revolving" because as payments are made from borrowers, that money in turn becomes available for new borrowers.

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  • Although it might seem difficult at first, there are many organizations and resources in place to assist small businesses with start-up and improvement financing such as revolving loans.

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  • Check out the list of states with small business start up revolving loans to find out how to access the programs offered by the SBA.

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  • Store fragrance bottles in an old card catalog or on a revolving spice rack.

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  • The band faced a revolving door of drummers, as is usual for most bands, until they found Lisa G., who would remain behind the kit for the rest of Cub's existence, in 1993.

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  • They had a revolving door of musicians, many of whom would go on to make names for themselves in the London punk scene.

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  • Although there appears to be a veritable revolving door of beautiful women showing up in episodes of this show, the original cast of three was the main focus.

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  • The revolving part is made with two side frames of cast iron or steel plates, and to these the lifting gear is attached.

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  • It consists essentially of a series of circular notched disks, the so-called saws, revolving between the interstices of an iron bed upon which the cotton is placed: the teeth of the " saws " catch the lint and pull it off from the seeds, then a revolving brush removes the detached lint from the saws, and creates sufficient draught to carry the lint out of the machine to some distance.

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  • The typical mine fan consists of a shaft upon which are mounted a number of vanes enclosed in a casing; the air entering a central side inlet is caught up by the revolving vanes and thrown out at the periphery by the centrifugal force thus generated.

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  • After the seed of Upland cotton has been passed through a fine gin, which takes off the short lint or linters left upon it by the farmer, it is passed through what is called a sheller, consisting of a revolving cylinder, armed with numerous knives, which cut the seed in two and force the kernels or meats from the shells.

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  • In this he showed that a homogeneous fluid mass revolving uniformly round an axis under the action of gravity ought to assume the form of an ellipsoid of revolution.

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  • orbita, a track, orbis, a wheel), in astronomy, the path of any body, and especially of a heavenly body, revolving round an attracting centre.

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  • This is defined as the speed of revolution of the fictitious body already described, revolving with a uniform angular motion and the same periodic time as the planet.

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  • QUERN, the primitive form of hand-mill for grinding corn, consisting of two flat circular stones; the lower stone, often shaped with a rim; has a wooden or metal pin in the centre which passes through a hole in the upper stone; the worker pours the grain through the hole with one hand, revolving the upper stone with the other by means of a peg fixed to one side.

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  • Hence processes have been patented in which the objects to be plated are suspended in revolving drums between the anodes, the rotation of the drum causing the constant renewal of surfaces and affording a burnishing action at the same time.

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  • There are strong reasons for believing that magnetism is a phenomenon involving rotation, and as early as 1876 Rowland, carrying out an experiment which had been proposed by Maxwell, showed that a revolving electric charge produced the same magnetic effects as a current.

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  • The effect of the field upon the speed of the revolving electrons, and therefore upon the moments of the equivalent magnets, is necessarily a very small one.

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  • If the structure of the molecule is so perfectly symmetrical that, in the absence of any external field, the resultant magnetic moment of the circulating electrons is zero, then the application of a field, by accelerating the right-handed (negative) revolutions, and retarding those which are left-handed, will induce in the substance a resultant magnetization opposite in direction to the field itself; a body composed of such symmetrical molecules is therefore diamagnetic. If however the structure of the molecule is such that the electrons revolving around its atoms do not exactly cancel one another's effects, the molecule constitutes a little magnet, which under the influence of an external field will tend to set itself with its axis parallel to the field.

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  • Earthy matter and other matter precipitated and fallen on the copper double bottom may be dislodged by a slowly revolving scraper - say every twelve hours - and ejected through the bottom discharge cock; and thus the heating surface of the copper bottom will be kept in full efficiency.

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  • They are weighed and then dumped into a washing machine, consisting of a large horizontal cage, submerged in water, in which revolves a horizontal shaft carrying arms. The arms are set in a spiral form, so that in revolving they not only stir the roots, causing them to rub against each other, but also force them forward from the receiving end,of the cage to the other end.

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  • Sometimes the cells are erected in a circle, so that the spout below the slicing machine revolving above them with a corresponding radius can discharge the slices into the centre of any of the cells.

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  • The roasting is most simply effected by spreading it on heated slabs, on which it is constantly turned, or a roasting machine is used, consisting of a revolving drum in which the tobacco is rotated, gradually passing from one end to the other, and all the time under the influence of a current of heated air.

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  • The coulter is a knife or revolving disk which is fixed so that its point clears the point of the share.

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  • In the United States a revolving furnace is used which is quite continuous in action.

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  • Accordingly, the vessel was built so low in the water that the waves glided easily over its deck except at the middle, where was constructed a revolving turret 1 for the guns, and though the vessel's iron armour had a thickness of 1 in.

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  • The "Monitor" had the advantage of being able to out-manoeuvre her heavier and more unwieldy adversary; but the revolving turret made firing difficult and communications were none too good with the pilot house, the position of which on the forward deck lessened the range of the two turret-guns.

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  • He first undertook a preliminary inquiry into the principles upon which flight depends, and established at Allegheny a huge "whirling table," the revolving arm of which could be driven by a steamengine at any circumferential speed up to 70 m.

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  • The principal component parts of a traveller are the main cross girders forming the revolving bridge, the two end carriages on which the bridge rests, the cranes.

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  • In the same way the arrangements finally elaborated by Lodge and Muirhead consisted of a direct coupled antenna and nearly closed condenser circuit, and a similar receiving circuit containing as a detector the steel wheel revolving on oily mercury which actuated a siphon recorder writing signals on paper tape.

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  • The nodules from the "blue earth" have to be freed from matrix and divested of their opaque crust, which can be done in revolving barrels containing sand and water.

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  • In the system devised by Mr Louis Brennaxi the cars run on a single rail laid on the ground, their stability being maintained by a heavy gyrostat revolving at great speed in a vacuum.

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  • The revolving masses are truly balanced by balance weights placed between ' the spokes of the wheels, or sometimes by prolonging the crank-webs and forming the prolongation into balance weights.

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  • We have thus grounds for believing that the original nebula will separate into a series of rings all revolving in the same direction with a central nebulous mass in the interior.

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  • Between the customs house and the railway terminus is the mouth of a small river, the Chiveve, crossed by a steel bridge, the centre span revolving and giving two passages each of 40 ft.

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