US561953A - Power-transmitting device - Google Patents

Description

(No Model.)

D. A. JAMES. POWER TRANSMITTING DEVICE.

No. 561,953. Patented June 9, 1896.

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UNITED STATES PATENT QEETCE.

DAVID A. JAMES, OF LAWVRENOEBURG, INDIANA.

POWER-TRANSMITTING DEVICE.

SFIEGIFIGATION forming part of Letters Patent No. 561,953, dated June 9, 1896.

Application filed Gctober 7, 1895.

To all 1072,0171 it may concern: I

Be it known that I, DAVID A. JAMES, a citizen of the United States, residing at Lawreneeburg, Indiana, have. invented new and useful Improvements in Power-Transmitting Devices, of which the following is a specification.

My invention relates to movable powertransmitiing devices, having reference to an apparatus whereby power may be transmitted to a number of points successively in series from a given source as occasion requires.

To this end it consists in the apparatus hereinafter described, wherein a shaft-carriage movable upon supporting-ways and adapted to be shifted at will to any desired position thereon is maintained in rotative relation with a driving-pulley, engaged or disengaged, as desired.

It c0nsists,further, in the certain constructive features whereby the apparatus may be moved to and retained in any desired position and thrown into or out of operation as required.

Mechanism embodying my invention is illustrated in the accompanying drawings, in which Figure 1 is a plan view, and Fig. 2 a partial side elevation, of myimprovement as adapted to a factory or workshop where power is required alternately at a series of work-hen ches. Fig. 3 is a crosssection of the trackway and shaft-carriage, showing structural features. Fig. 4: is a detail view of the catch device attached to the carriage.

Referring now to the drawings, A A designate the parallel rails of a supporting-trackway suspended from a eeilin g or side wall by brackets 13, and C a carriage traveling on and between the tracks, upon which it may be carried and held by friction-rollers c c. In the carriage, which is simply a bearing-frame of any convenient construction, a vertical shaft 5 is journaled in relatively permanent bearings and is provided with a fixed pulley p and a loose pulley 12 adjacent, both carried on an extension of the shaft above the earriage C. To the lower end of the shaft 8 is attached an extension-such, for example, as a flexible shaft 7) or any other means of transmitting the power adapted to the occa- In the present case a drill a: is shown sion.

$erial No. 564,837. (No model.)

attached to the terminal of the shaft Z) to .be used for boring at the bench. A second vertical shaft or stud s is also journaled in the carriage, adapted to be moved vertically, and carries a loose pulley p at its upper end above the carriage and is provided at its lower terminal with a handle f, by which it maybe elevated, carrying the pulley p with it. To sustain it in its elevated position, the shaft 3 is provided nearits lower end with a radial projection 12 and the aperture in the lower wall of the carriage through which it passes is provided with a correspondingly radial enlargement, so that by elevating the shaft, passing the radial projection through the enlargement, and giving the shaft a partial rotation the projection rests on the lower wall of the carriage and sustains the shaft in its elevated position. A reversal of this operation lowers it. The object of this construction will be presently explained.

At one end of the traekway is journaled a driving-pulley D, (which may be upon the ordinary line-shaft of a factory,) and on the trackway near the opposite end is a movable tension-carriage E, from which projects upwardly a vertical stud or spindle carrying a belt-pulley F. The carriage is held bya cord or chain g", passing outward over a fixed sheave g, and carrying a weight V at its outer terminal to keep the carriage under constant stress in that direction.

An endless belt G from the driving-pulley D passes at one side of the carriage 0 directly to and around the pulley F upon the tension-carriage E, and at the other is carried in a reverse bight first around the pulley p and thence around the pulley p, thence to the pulley F, thus communicating the driving power to the pulley p and its shaft 8.

It may now be explained that upon elevating the shaft or stud s wit-hits pulley 29 the belt is carried to the loose pulley p and the shaft 3 no longer operated, the pulley p having the double function of an idler for changing the direction of the belt I) to bring it into proper relations with the pulley p and also as a belt-shifter to discontinue the application of power when not required.

In order to move the carriage C with convenience, I attach to the under side of the IOC carriage O, in position to engage through a less belt operating normally parallel with the suitable opening or recess in the carriage trackway and carried upon pulleys at oppowith notches at the under side of the tracksite ends of the trackway and in opposite Way, a pivoted dog or catch 7t, provided with bights around the pulleys upon the carria e; 5 5 5 a weight or spring at the outer end, and to and a transmitting device attached to one of overbalance the same and bring its head or the vertical shafts of the carriage, SllbSDt in shorter end into notches suitably provided at tially as set forth. the under side if the trackway. In lieu of In a power-transmitting device of the notches thehead may be provid ed with a camcharacter indicated, the combination of a can 6 surface to engage the underside of the trackriage carried upon a supporting-trackway, a way by wedging friction. A card or chain a, shaft vertically journaled therein carrying a attached to the short end of the dog, hangs fast and a loose pulley, a second shaft or stud down within convenient reach of the attendupon the carriage and carrying an idler-pulant and. furnishes a means fcr disengaging ley, an endless belt carried upon pulleys at 3 1 the dog and drawing the carri tge to any conopposite ends of the trackway and in opposite venient point, and up n its release the dog bights around the shaft-pulleys of the carautomatically engages and retains the carriage, and means for shifting the belt while riage in position. in operation from the fast to the loose pulley The mode of operation is as follows: The or vice isa, sul stantially as set forth. "-0 2c shifter-pulley1:) stands norm 1.113 in its ele- In a power-transmitting device of ih vated position, with the belt G operating the characte r indioat ad, the combination of a car loose pulley 1:1 The (arriage O is moved to riage car ied upon asupporting-fraine, as mi 1 the desired position by the card or chain a, vertioall Y journaled therein carrying a his whereupon the handle f is manipulated to and loose pulley, a second shaft or stud upon 75 5 lower the pulley 11 so that the belt engages the rri e and carrying an idler-pulley, an the shaft 5', and the power is transmitted endless belt oarr ed upon pulleys at oppr sit thence by the flexible shaft to the tool 00 or ends of the trackway and in opposite bights other device to be operated. IVhe'n the ob around the shaft-pulley of the carriage, an I ject of use is accomplished, the handle f is means for elevating or depressing the flanged 5c 0 again manipulated to elevate the pulley p pulley of the carriage to shift the belt to the and the belt is shifted to the loose pulley 1J2, fast or loose pulley of the first-moi ti nel thereby discontinuing the rotation of the shaft, substantially as set forth. shaft 5-. The flexible shaft f may be then, i. In a movable power-transmitting levice, for convenience, hung upon the handle f, the combination ofatraokway, adrivingpulas shown in the drawings, and the carriage ley at one end of the same, a tension-pulle allowed to stand or be moved out of the way near the opposite endprovided with means until a new occasion for use arises. The tenfor holding it away from the driving-pulley, sion device always keeps the belt taut upon an endlessbelt carried around the tons on an I the pulleys. driving pulleys, a shaft-carriage movable 9o 40 I may instead of giving the pulley p the upon the trackway between the driving and function of a shifter by its vertical adjusttension pulleys, a shaft and pulley, and an ment employ any ordinary bolt-shifting deadjacent idler upon the carriage, carrying the vice. belt in a reverse bight, substantially as set I claim as my invention and desire to secure forth. 9 5 by Letters Patent of the United States- In testimony whereof I have hereunto set 1. The movable power-transmitting appamy hand in the presence of two subscribing ratus, embodying a trackway, attached to a witnesses. permanentsupport; ashaft-carriage movable DAVID A. JAMES. thereon, and means for moving and securing lVitnesses: the same; two shafts provided with pulleys L. M. HOSEA,

and carried upon the shaft-carriage; an end- FRANK K. BOWMAN.

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