The trip being completed, the empty train is hauled back by reversing the engine.
The engine, which is provided with reversing gear, is of 12 or 15 horse-power and motion is communicated through a belt to the band-wheel, which operates the walking-beam by means of a crank.
The position of the reversing link is altered by means of a cord, passing over two pulleys, fixed respectively in the engine-house and on the derrick.
K is a commutator for reversing the direction of the magnetizing current, and G a galvanometer for measuring it.
Units in the case illustrated in the figure), an operation which is performed by simply reversing, the direction of the maximum magnetizing current a few times.
The reversing key K having been put over to the left side, the short-circuit key S is suddenly opened; this inserts the resistance R, which has been suitably adjusted before hand, and thus reduces the current and therefore the magnetizing force to a known value.
To continue the process, the key K is turned over to the right-hand side, and then, while S is open, is turned back, thereby not only reversing the direction of the current, but diminishing its strength by an amount depending upon the previous adjustment of R2.
The second has a very small area, showing that the work done in reversing the magnetization is small; the metal is therefore adapted for use in alternating current trans formers.
Inside the torsion-head is a commutator for automatically reversing the current, so that readings may be taken on each side of zero, and the arrangement is such that when the torsion-head is exactly at zero the current is interrupted.
Hoisting engines are provided with powerful brakes and frequently with reversing gear.
On reversing the motion the valve E closes and the liquid is forced through the valve F to the upper part of the cylinder.
On reversing the motion the - I valve E closes and the liquid is IL driven past the valve F.
4,as mannose is produced by reversing the sign of the asymmetric system adjoining the terminal COH group.
Gill introduced a powerful auxiliary to the accuracy of heliometer measures in the shape of a reversing prism placed in front of the eye-piece, between the latter and the observer's eye.
The third form is the outflow or reversing thermometer, first introduced by Aime, who used a very inconvenient form in the Mediterranean in 1841-1845, but greatly improved and simplified by Negretti and Zambra in 1875.
Towards the shaft, and the empty ones returned " in bye," or towards the working faces, by reversing the engine; while in the other systems, double lines, with the rope travelling continuously in the same direction, are the rule.
Twice the length of the way; the set is returned in bye, by reversing the engine, casting loose the main, and coupling up the tail drum, so that the tail rope is wound up and the main rope paid out.
Fore-sights are made right and left; tangent sights are interchangeable, the graduations are cut on the horizontal edges above and below, so that the sight can be changed from right to left or vice versa by removing and reversing the bar.
8 Alternately admitted into or rejected from the series, it was finally, some six or seven centuries ago, eliminated by the effects of precession in reversing the order of culmination of its limiting stars.
Also experimented on the pressure of powder and the velocity of the bullet in a musket barrel; this he accomplished by shortening the barrel successively, and measuring the velocity obtained by the ballistic pendulum; thus reversing Noble's procedure of gradually lengthening the gun.
On the ground that all the earlier copies had been contaminated by the Latin - almost reversing the teaching of Bentley.
It was marked by the complete defeat of the AntiUnionist party in Nova Scotia, only one member of which secured his election, thus exactly reversing the Pacific vote of 1867.
On his deathbed Richard, reversing his former arrangements, caused his barons to swear fealty to John (1199), although the hereditary claim of Arthur was by the law of primogeniture undoubtedly superior.
But the free-traders did not like Mr Balfour's formula as to reversing the traditional fiscal policy of import taxes for revenue only.
At the council of Sardica (343) an attempt had been made to regulate the procedure in these appeals, by recognizing as the right of the pope the reversing of judgments, and the appointment of fresh judges.
The air and gas, the latter coming from the gas producers or other source, arrive through H and J respectively, and their path thence is determined by the position of the reversing valves K and K'.
- Plan through Regenerators, Flues and Reversing Valves..
K, Air reversing valve.
K', Gas reversing valve.
In order to prevent this waste the direction in which the rolls move may be reversed, so that the piece may be reduced a second time in passing to the left, in which case the rolls are usually driven by a pair of reversing engines; or the rolls may ?? ?
The advantage of the " reversing " system is that it avoids lifting the piece from below to above the middle roll, and again lowering it, which is rather difficult because the white-hot piece cannot be guided directly by hand, but must be moved by means of hooks, tongs, or even complex mechanism.
He employed a Nachet combination of prisms and placed the dividing prism at the spot where a special reversing system formed a real image of the exit pupil of the objective.
Root Co., Medina, the combs for reversing after Ohio, U.S.A,) one side had been emptied of its contents.
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.
But Philip in his turn nearly allowed himself to be led into an attempt at annexing England, and so reversing for his own benefit the work of the Angevins (1213); but, happily for the future of the dynasty, Pope Innocent UI.
Young caught the " flash spectrum " of the reversing layer, at the moment of second contact, at Xerez de la Frontera in Spain, on the 22nd of December 1870.
Large and radical as the measure was, reversing many of the accepted principles of legislation by giving the tenant a quasi-partnership with the landlord in his holding, no serious opposition was made to it in either House of Parliament.
It was, no doubt, possible to say a good deal for Gladstones indignant denunciation of his predecessors policy in annexing the Transvaal; it would have been equally possible to advance many reasons for reversing the measures of Lord Beaconsfields cabinet, and for conceding independence to the Goer War, Transvaal in 1880.
The government, however, saw little reason in the events of the following months for reversing their coercive policy.
Henrys first outburst of self-assertion took the form of reversing his fathers thrifty and peaceful policy, by plunging into the midst of the continental wars from which Coat!England had been held back by his cautious parent.
The data given above refer to the mean reversing layer.
In the older type of machine it 'is next led up to the right- ' hand one of the two reversing drums, which are placed above the large printing cylinders, and over which it passes with the printed side downwards.