US953646A - Switch-lever lock. - Google Patents

Description

A. A. STROM.

SWITGH LEVER LOOK.

APPLICATION FILED DEO.13, 1909. 56425 Patented Mar. 29 $39.

2 SHEETSSHEET 1.

ANDREW av GRAHAM c0 PMOTO-UYHQGMPNER WASHINGTON, D C

A. A. STROM.

SWITCH LEVER LOOK. I APPLIOATIOH FILED 1330.13, 1909.

Paienil $2,115.59, 193%.

2 SHEETS-SHEET 2.

(DREW u. GRAHAM '20.. Wonmumuun or ansrrn, IL rrlnr, or onronoo,

iBIGNGR T0 PETTIBGNE, "MULLZKEII 85 CGIVL SEE ETCELLEVEEJ 130?.

Application filed l'z'eeemoer 13, 1985 To all whom it may concern:

Be it known that l, i-iXnL A. S'rnoai, a citizen of the United States, residing at Austin, in the county of Cool: and State of Illinois, have invented a new and useful improvement in Switch-Lever Locks, of which the following is a specification.

My invention relates to an improvement in the class of leeks used for obstructing the throw-lever of a low or ground switchstand against accidental rise when the lever is at the end of its throw, the obstructing member of the device being in the form oi a pivotal abutment adapted to assume by gravity, as its normal position, that out of the path of movement of the lever and requiring to be turned manually into that path 5 to obstructthe lever and to be locked to retain it in the obstructing position.

In the accompanying drawings, Figure 1 shows a switch -stand by a plan view, equipped with my improved lock at each end of the throw of the operating lever; Fi 2 is a perspective view showing a portion of the switch-stand on which the lock is provided, and Figs. 3 and 4c are enlar ed sections on line A, Fig. 1, respectively showing the lock in its inoperative and operative condition.

The switch-stand shown in the drawings for illustration of my present improvement, which, however, is applicable to any switchstand in the class referred to, forms the subject of United States Letters Patent No. 93l,852, granted to me September 21, 1909, in which the casing 5 containing the switchoperating mechanism adapted to be conneeted with a switch through the medium oi a switch-bar, is provided in its crown-portion with cam-slot- 6 in which the operatingl ever 7 works to actuate the mechanism within the casing, wit-h which itis suitably connected, to throw the switch.

One of my improved locks for the operating lever is provided at or adjacent to each end of its throw, and is preferably, as shown, formed integral with the casing 5 on an inclined lever-seat or stop 8 at the end of the cam-slot. The lock-device comprises a pair oi similar parallel ears 9, 9 rising from a seat 8 integral with which they may be cast and presenting, at the side adjacent to the path of the lever, an offset-face or shoulder 10. The metal abutment 11 is of. general pawl-shape, in its preferred form, to present Specification 01 Letters Serial 1, 0.

at its forward or lever-engaging end a lip 12, the opposite end 13 being of general ballshape to render that end relatively heavy; and between the ends extends an n 14 to enter bet-ween the ears or standards 9 for there pimting the abutment by a pin 15. I ar the an le formed by the lip 12 and arm 14: hole 16 is provided toreceive a lock-bolt, such as the shackle l? of a. padlock 18.

The position which the abutn'ienttends to stopcd by the adjacent side of seatingthus with the end 11 withdrawn from t path of the lever 7. To obstructthe lever against rising, atter being turned to an end of its throw to bear against a seat 8, the abutment is turned on its pivotal support, by raising the end 18, to extend the lip 12 across the operatingdever, thereby bringing the hole 16 in front of the standard-faces 1tand adapting it to receiv padlock shackle 1?, which by hearing against these faces locks the abutment in its lever-obstructing position and against turning bacl: to its normal or inoperative position under the gravity oi the end which, however, it does upon withdrawing the shackle to permit the lever 7 to be thrown.

What claim as new and desire to secure by Letters Patent is 1. A switeh-lever lock comprising a pair oi standards, an abutment having leverobstructing lip thereon, an arm pivoted between said standards, and a pad dock shadale-receiving hole through the abutment so positioned with relation to the vertical plane of the standards to clear the edges thereofwhen the lcver-obstrinrting lip of the abutment in engagement with the lever and to cause the pad-lock shackle threaded through said hole to abutagainst the standards and to lock the lever in place.

:2. ii switch-lever loclr comprising a pair of standards, an abutment having a leverobstructing lip on one side thereof anl a weight on its opposite side, an arm intermediate of said lip and weight and pivoted between the standards, and a padlock shackle-receiving hole through the abutment so positioned with relation to the vertical plane of the standards to clear the edges thereol when the lever-obstructing lip of the abutment is in engagement with the lever and to cause the pad-lock shackle threaded 1 through said hole to abut against the standards and to lock the lever in place.

3. In combination with a switch-stand, a lever-lock comprising a pair of standards mounted on the casing of the stand adjacent to the end of the path of the throw of the operating-lever, an abutment having a leverobstructing lip on one side thereof, an arm pivoted between said standards, and a padlock-shackle-receiving hole so positioned with relation to the vertical plane of the standards as to clear the edges of the same when the lever-obstructing lip of the abutment is in engagement with the lever and to cause the paddock-shackle threaded through said hole to abut against the standards to lock the lever in place.

AXEL A. STROM.

In presence of 'T v Y 1 u. I. limnrinsom j R. A. SCHAEFER.

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