The armature acts on an inking disk on the principle described above, save only that the disk is supplied with ink from a groove in a second wheel, on which it rolls: the grooved wheel is kept turning with one edge in contact with ink in an ink-well.
The three middle metatarsals become fused together into a cannon bone; the upper part of the third middle metatarsal projects behind and forms the so-called hypotarsus, which in various ways, characteristic of the different groups of birds (with one or more sulci, grooved or perforated), acts as guiding pulley to the tendons of the flexor muscles of the toes.
The face (clypeus) is (Grooved Whirlibroad, extending on either side gig).
In butterflies and moths the lacinia is absent while the galea becomes a flexible process, grooved on its inner face, so as to make with its fellow a hollow sucking-trunk, and the palp is usually very small.
Mandibles and first maxillae modified as piercers; second maxillae fused to form a jointed, grooved rostrum.
Mandibles absent in imago, very exceptionally present in pupa; first maxillae nearly always without laciniae and often without palps, or only with vestigial palps, their galeae elongated and grooved inwardly so as to form a sucking trunk.
The throttle-valve is opened or closed by turning a grooved vertical pulley by means of an endless cord, called the telegraph, passing round another pulley fixed upon the " headache-post," and is thus under the control of the driller working in the derrick.
In diameter, passing from the bull-wheel shaft over a grooved wheel known as the crown-pulley, at the summit of the derrick.
The district as a whole is grooved by a main depression, running from north to south along the valleys of St John, Thirlmere, Grasmere and Windermere, surmounting a pass (Dunmail Raise) of only 783 ft.; while a secondary depression, in the same direction, runs along Derwentwater, Borrowdale, Wasdale and Wastwater, but here Sty Head Pass, between Borrowdale and Wasdale, rises to 1600 ft.
The river Derwent, rising in the tarns and "gills" or "ghylls" (small streams running in deeply-grooved clefts) north of Sty Head Pass and the Scafell mass flows north through the wooded Borrowdale and forms Derwentwater and Bassenthwaite.
The coagulated rubber separated from the watery fluid is cut up into small pieces and passed through the grooved rollers of the washing machine, from which it issues in sheets, long crinkled ribbons or " crepe," which are then dried in hot air chambers or in a vacuum dryer, by which means the water is dissipated at a lower temperature.
The softened slices are now repeatedly passed between grooved rollers, known FIG.
The loaded train is coupled to the main rope, and to the rear end is attached the tail-rope; which reaches to the end of the line, passing there around a large grooved sheave and thence back to the engine.
In all tsetse-flies the proboscis in the living insect is entirely concealed by the palpi, which are grooved in their inner sides and form a closely fitting sheath for the piercing organ; the base of the proboscis is expanded beneath into a large onion-shaped bulb, which is filled with muscles.
In some all the teeth are nearly of the same size; others possess in front of the jaws (Lycodonts) or behind in the maxillaries (Diacrasterians) a tooth more or less con spicuously larger than the rest; whilst others again are distinguished by this larger posterior tooth being grooved along its outer face.
The snakes with this grooved kind of tooth have been named Opisthoglyphi, and also Suspecti, because their saliva is more or less poisonous.
- The anterior maxillary teeth are deeply grooved, or so folded as to appear hollow or perforated.
The Nepidae breathe by means of a pair of long, grooved tail processes (really out-growths c, labrum; d, epipharynx.
In Koepe's method the drum is replaced by a disk with a grooved rim for the rope, which passes from the top of one cage over the guide pulley, round the disk, and back over the second guide to the second cage, and a tail rope, passing round a pulley at the bottom of the shaft, connects the bottoms of the cages, so that the dead weight of cage, tubs and rope is completely counterbalanced at all positions of the cages, and the work of the engine is confined to the useful weight of coal raised.
Both the grinding and polishing tools are grooved, to obtain a uniform distribution of the emery used in the grinding process and of the rouge employed in polishing, as also to provide for the lateral expansion of the pitch with which the polisher is coated.
Generally the teeth are conical or pointed, more rarely blunt, grooved or serrated.
- Pleurodont; teeth solid, sometimes (Ophiosaurus) grooved; anterior part of tongue emarginate and retractile into the posterior portion; osteoderms on the body, and especially on the head where they are roofing over the temporal fossa; entirely zoophagous and ovo-viviparous.
- The teeth of Heloderma are recurved, with slightly swollen bases, loosely attached to the inner edge of the jaws; each tooth is grooved, and those of the lower jaw are in close vicinity of the series of labial glands which secrete a poison; the only instance among lizards.'
Lanthanotus corneensis, of which only a few specimens are known, is apparently closely allied to Heloderma, although the teeth are not grooved, osteoderms are absent and probably also the poison glands.
Geomys bursaries, the "red pocket-gopher" of North America, with deeply grooved incisors, inhabits the plains of the Mississippi, living in burrows like the mole.
In the typical jerboas, Jaculus (or Dipus), ranging from North Africa to Persia, Russia and Central Asia, there are only three hind toes, the incisors are grooved, and the premolars are generally wanting.
Hispidus), oryzonzys, Rhithrodontomys (with grooved incisors), Ichthyomys and Anotomys (fish-eating, aquatic forms, from the mountains of South America), Acodon, and the North American wood-rats, or Neotonza, in which the molars have a structure simulating that of the under-mentioned Microtinae.
Synaptomys is also North American, and characterized by the grooved After Gould.
Golunda, from India and Africa, is like Mus, but with grooved upper incisors.
Echinothrix is a rat with an extremely elongated muzzle, all the bones of the face being much produced, and the incisors faintly grooved, the only species, E.
Some prefer that the sash-bars should be grooved instead of rebated, and this plan exposes less putty to the action of the weather.
The rapid advance in mechanical engineering in the latter part of this second period stimulated the iron industry greatly, giving it in 1728 Payn and Hanbury's rolling mill for rolling sheet iron, in 1760 John Smeaton's cylindrical cast-iron bellows in place of the wooden and leather ones previously used, in 1783 Cort's grooved rolls for rolling bars and rods of iron, and in 1838 James Nasmyth's steam hammer.
35, or by passing the piece through an aperture, F', smaller than the first F, as in case of the grooved rolls, AA, shown at the right, or by both means jointly.
35, instead of being transferred from one grooved pass to another and smaller one.
We may note with interest that the three great iron producers so closely related by blood-Great Britain, the United States and Germany and Luxemburg-made in 1907 81% of the world's pig iron and 83% of its steel; and that the four great processes by which nearly all steel and wrought iron are made-the puddling, crucible and both the acid and basic varieties of the Bessemer and open-hearth processes, as well as the steam-hammer and grooved rolls for rolling iron and steel-were invented by Britons, though in the case of the openhearth process Great Britain must share with France the credit of the invention.
Funnel-shaped grooved tenHeart."tacular crown leading to the mouth.
Sliding Contact (circular): Grooved Wheels.As the adhesion or friction between a pair of smooth wheels is seldom sufficient to prevent their slipping on each other, contrivances are ~ised tc increase their mutual hold.
The comparative motion of a pair of wheels so ridged and grooved is the same a~ that of a pair of smooth wheels in rolling contact, whose cylindrical or conicai surfaces lie midway between the tops of the ridges and bottoms of the grooves, and those ideal smooth surfaces are called the pitch surfaces of the wheels.
Grooved wheels have hitherto been but little used.
Cords require either cylindrical drums with ledges or grooved pulleys.
Chains require pulleys or drums, grooved, notched and toothed, so as to fit the links of the chain.
First, its dorsal wall (which is grooved to form the hyperpharyngeal groove) is closely adherent to the sheath of the notochord; and secondly, the pharynx is attached through the intermediation of the primary bars.
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.
Both are deeply grooved in places, and the crags give a hilly aspect to the districts in which they occur.
In Sciadopitys similar spurs occur, each bearing a single needle, which in its grooved surface and in the possession of a double vascular bundle bears traces of an origin from two needle-leaves.
The rims of pulleys for hemp or other ropes or cords are grooved, and the sides are usually either inclined at 45° or curved to give a sharper angle at the outside than at the bottom of the groove; in the latter case, as the rope wears it engages in a groove of greater angle and less effective grip. Wire ropes are injured by the lateral crushing of the material, and in this case the grooves are wide enough to allow the rope to rest on the rounded bottom, which is lined with leather or wood to diminish the wear and increase the friction.
Though generally nearly smooth, or but slightly scaly, the surface of some hairs is imbricated; that is to say, shows projecting scale-like processes, as in some bats, while in the twotoed sloth (Choloepus) they are longitudinally grooved or fluted.
The typical representative of the genus is the yellow baboon (P. cynocephalus, or babuin), distinguished by its small size and grooved muzzle, and ranging from Abyssinia to the Zambezi.
The Scandinavian portion of Lapland presents the usual characteristics of the mountain plateau of that peninsula - on the west side the bold headlands and fjords, deeply-grooved valleys and glaciers of Norway, on the east the long mountain lakes and great lake-fed rivers of Sweden.
The oldest, in its present form, is the Paulinerkirche, built in 1229-1240, and restored in 1900, with a curiously grooved cloister; the largest in the inner town is the Thomaskirche, with a high-pitched roof dating from 1496, and memorable for its association with J.
- Part of the flower of Aconite (Aconitum Napellus), showing two irregular horn-like petals (p) supported on grooved stalks (o).
These rollers are finely grooved so that the seed is cut up whilst passing in succession between the first and second rollers in the series, then between the second and the third, and so on to the last, when the grains are sufficiently bruised, crushed and ground.
The air spaces, two or three in number, are formed between two layers of tongued and grooved wood, and the total thickness of the insulation is about the same as when silicate cotton alone is used.
We have a grooved board which we put between the pages when we wish to write.
I do not write on a Braille tablet, as you suppose, but on a grooved board like the piece which I enclose.
Day after day she moved her pencil in the same tracks along the grooved paper, never for a moment expressing the least impatience or sense of fatigue.
It has been found in practice advantageous to prepare the canes for crushing in the mills, as above described, by passing them through a pair of preparing rolls which are grooved or indented in such manner as to draw in and flatten down the canes, no matter in which way they are thrown or heaped upon the canecarrier, and thus prepare them for feeding the first mill of the series; thus the work of crushing is carried on uninterruptedly and without constant stoppages from the mills choking, as is often the case when the feed is heavy and the canes are not prepared.
The anterior maxillary teeth are grooved or "perforated."
Coelopeltis, with concave, or grooved scales; C. lacertina s.