US1085172A - Switch-lock. - Google Patents

Description

M. SOHROYER.

SWITCH LOOK.

APPLICATION FILED I'EB.17, 1913.

Patented Jan. 27, 1914.

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M. SGHROYER.

SWITCH LOGK.

APPLICATION FILED IEB.17, 1913.

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Patented Jan. 27, 1914.

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MARTIN SCI-IROYER, OF BROWNfiVILLE, PENNSYLVANIA, ASSIGNOR OF ONE-THIRD TO WILLIAM I). MQBRYAR AND ONE-THIRD TO THOMAS GRENFEL, BOTH. OF ELIZA- BETH, PENNSYLVANIA.

SWITCH-LOCK.

To all whom it may concern:

Be it known that I, MARTIN SoHRoYER, a citizen of the United States, residing at Brownsville, in the county of Fayette and State of Pennsylvania, have invented certain new and useful Improvements in Switch-Locks of which the following is a specification.

My invention consists of an improvement in switch locks and has for its object to provide an apparatus of this class in which the switch operating lever is mounted upon a suitably located mechanism, adapted to fixedly hold the lever in locked position, and operable by a foot lever to effect release.

A preferred embodiment of the invention is illustrated in the accompanying drawings in which Figure 1 is a plan view showing a section of track and switch-points in operative relation to my improved apparatus. Fig. 2 is an enlarged detail plan view of the switchstand. Fig. 3 is a view of the switch stand in elevation. Fig. 1 is a cross sectional detail view on the line IV. IV. of Fig. 2.

In operating the switch-points of switches, it is customary and desirable to lock the actuating mechanism so as to positively maintain the switch in either open or closed position. For such purpose the switchpoints 2, 2, are usually connected by a bar 3 and actuated by a pitman 1 or other suitable connection, which in turn is thrust forwardly or backwardly by any suitable gearing 5, 6, of well-known type mounted within a suitable receiving casing 7.

In the construction shown, the casing 7 is formed integrally or otherwise at a part of the switch-stand which is mounted by its base 8 across the ends of the usual cross-ties by spikes, and at a suitable position for operation by the switch-tender.

The operation of the switch is efiected by manipulation of the usual lever 9 arranged to be thrown around the center of its perating shaft 10 extending outwardly from one end of housing 7, and said lever is of any suitable or usual construction, as will be readily understood. It is designed to be thrown to the right or left in horizontal position, and to be there positively held in a receiving housing 11 extending upwardly from the base-plate 8, and having a locking latch 12 provided with an extended counter- Specification of Letters Patent.

Patented Jan. 27 1914;.

Serial No. 748,954.

weighted portion 13 and pivoted at 1 1 in the housing.

The housing 11 is formed with a vertical inner wall 15 extending downwardly from the top, terminating at the bottom in a supporting right angle bearing 16 for the lever when lowered and locked. The housing is also provided at the other side with an upwardly extending horn 17 flared outwardly as at 18, to insure engagement of the arm 9 in lowering. The locking latch 12 has a straight face 19 adapted to be depressed backwardly into alinement with the face of wall 15 when the lever 9 is lowered and a curved bottom concentric with the pivot 14 so as to provide a locking engagement with arm 19 at the same distance from the center 1 1 whatever distance the latch 12 may be outwardly from face 15. The latch is so proportioned that it will be thrown out to locking position by the weight 13, over the top of the lever arm, as in Fig. 4. Housing 11 is hollow for clearance of the operating lever 20 and connecting arm 21. Lever 20 is pivoted at 22 in the front portion of the housing, extending outwardly and upwardly to provide a foot treadle, and beyond the pivot bearing it extends inwardly and is pivoted to the lower end of arm 21 at 23. Arm 21 is pivotally connected with latch 12 at one side of pivotal bearing 14, as at 24:, weight 13 normally depressing the arm and thrusting treadle 20 upwardly. When it is desired to raise arm 9, the treadle is depressed by the operator, withdrawing the latch, and leaving his hands free to handle the operating lever. This is of great advantage, and overcomes the necessity of using the hands for actuating the latch, which is necessary in other present forms of switchlocks. It will be understood that one such housing and latch is provided at each side of the working center of the switch throwing shaft, the treadles being disposed outwardly away from the track so as to avoid the necessity of stepping onto or near the track.

The device is very simple, cheap and efficient; the working parts are protected from the weather; it is self-contained, and will be found to provide effectively for the objects in view.

What I claim is:

In a switch lock, the combination of a supporting base, an operating lever mounted therein operatively connected with switch actuating mechanism, a hollow receiving and locking housing for the lever fixedly secured to the supporting base and having upwardly projecting side portions and an intervening integral bottom rest, one of said side portions being outwardly flared and the other provided with an inner vertically straight face, a locking latch pivoted in said por tion outwardly beyond said face, said latch having a straight front portion for engagement by the downwardly traveling lever 00- incident with its movement along said vertical face and provided with a curved locking face concentric with its pivot and an extended counterweight, an upwardly extended foot treadle pivoted in the hollow base of the housing, and an'arm pivoted to the inner end of said treadle extending upwardly within the hollow housing and pivotally connected to the latch within the housing, substantially as set forth.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

MARTIN SCHROYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. V

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