US803168A - Stop-cock handle. - Google Patents

Description

- N0. 803,168. PATENTED OCT. 31, 1905.

D. INCHES & B. J. HOSKER.

STOP COCK HANDLE.

APPLICATION FAILED Alum, 1905.

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DAVID INCHES, OF NORTH BEND, AND EDWARD JAMES HQSKER, OF

KAMLOOPS, CANADA.

sToP-cocK HANDLE.

Patented Oct. 31, 1905.

Application filed April 7,1905. Serial No. 254,425.

To all whom it may concern.-

Be it known that we, DAVID INoHEs, residing at North Bend, and EDWARD JAMEs Hos- KER, residing at Kamloops, in the Province of British Columbia, Canada, citizens of the Dominion of Canada, have invented a new and useful Improvement in Stop-Cock Handles, of which the following is a specification.

Our invention relates to an improved lockhandle for stop cocks or valves, which, al-

though particularly designed for application to the angle-cock of the Westinghouse airbrake train-pipe, is equally applicable to any stop cook or valve where it is desired to preclude the possibility of the handle being inadvertently turned.

Railway accidents have frequently happened owing to the communication through the trainpipe being closed by the accidental moving of the stop-cock handle, and the handle, which is the subject of this application, is intended to avoid such mishap by providing a detent or look, which will retain the handle in the open position unless it is deliberately intended to move it to shut the cock.

The handle as drawn is designed as appli cable to the standard angle-cock of the Westinghouse air-brake system without further change than the substitution of this handle for the existing one, and our effort has been to avoid all possible complication and provide a positive check against accidental movement of the handle in as simple and direct a manner as, possible.

The construction and application of the handle to a stopcock is fully set forth in the following specification, reference being made to the drawings which accompany it, in Which Figure 1 shows in elevation the portion which is secured to the key-square of the cock-plug; Fig. 2, a plan of the same; Fig. 3, an elevation of the handle complete; Fig. 4, a plan of the same, and Fig. 5 a cross-section on the line A A in Fig. 4.

In the drawings the upper part of the body of a stop-cock is represented by 2, the stops at present provided to limit the rotation of the plug in the cock being represented by 3 and 4, 3 being the stop in the open position and 4 that limiting the movement beyond the shut position. Fitting the key-square of the plug and secured thereto by a pin 6 in the further explanation. open, with the detent 8 against the stop 3, the

usual manner is a member 7, having an outwardly and downwardly projecting member 8, designed to engage the limit- stops 3 and 4 of the stop-cock in the same manner as does the stop-pin of the existing handle. Backwardly projecting from this member 7 at the side opposite to the check 8 is a portion 10, to which is pivotally connected by a pin 9 the fork end of a handle member 11, the fork being shaped, as at 12, to pass round and conform to the cylindrical portion of the member 7 and provided with a recess 13, which recess merely enables the lever to lie over and rest on the detent member 8 when material to the operation of the handle.

Downwardly projecting from the outer side of 12 adjacent to the stop 4 of the cock-body is a detent 15, which when the handle is in the open position, with its detent 8 against the stop 3 of the body, will engage the stop 4 and prevent any movement of the handle to close the stop-cock; but when the handle is lifted up, as shown in dot and dash lines in Figs. 3 and 5, against the checks. 16, outwardly projecting from the upper side of 7, this detent 15 will be clear of the stop 4 and the handle may be moved to turn the plug of the cock to close the opening through it until the detent ,8 of the member 7 engages the stop 4.

The operation of the device hardly requires When the stop-cock is handle will by its own weight drop to its lower portion, in'which position the check 15 is in engagement with the stop 4 and will prevent any movement of the handle to open the stopcock; but if the handle 11 be lifted against the checks 16 the detent 15 will be clear of the stop 4 and the handle may be turned until the detent 8 engages that stop.

The back portion of the detent 15 is beveled away to enable the handle to be lowered over the back of the stop 4 and so that it will not interfere with the movement of the handle to open the cock.

It will be noticed that the simple element of the device is the addition to a plug-secured portion, having a detent to limit its movement between stops on the body of the cock, of a pivotally-mounted handle member having a detent which will engage the shut stop when the stop of the plug-secured portion is against the open stop, whereby rotation of the plug is prevented until such engagement is released.

N change is required in the design or construction of the stop-cock body. The present handle merelyrequires to be removed and the lock handle," which is the subject of this application, supplied in its place and secured in the same manner as the original handle with a pin 9.

Although the device illustrated has been designed for application to a plug stop-cock, wherein a. quarter-turn of the handle is required to effect the opening or closing, it is obvious that with slight modification the same device is equally applicable to a stop-valve of any kind in which the limiting-stops may be farther apart.

Having now particularly described our invention and the manner of its application, we hereby declare that what we claim as new, and desire to be protected in by Letters Patent, is-

1. In a device of the class described, the combination with astop-cock, a valve having a pair of stops on its body, a stop-plug or valve-stem having a bracket member, said cock-plug or valve-stem having a finger for engaging one of the stops on the valve-body, and a handle including a bifurcated end hingedly secured to said bracket portion of the cock-plug or valve-stem and having a portion for surrounding said stem, said handle also having a lug for engaging the other stop on the valve-body, substantially as shown and described.

2. Inadevice of the class described, the combination with a stop-cock having stops to limit the movement of the handle at the open and closed positions of the plug, said stop-cock including a plug having a bracket member and having a detent for engaging said limiting-stops on the body of the cook, a handle member pivotally secured at one end to said bracket portion of the plug and having a detent for engaging the limiting-stop at the shut position and prevent movement toward it when the detent in the bracket mem- I ber is against the stop of the open position but which may be relieved of such engagement by raising the handle on its pivot, substantially as shown and described.

3. In an apparatus of the class described, the combination with a stop-cock having stops to limit the movement of the handle, a member secured to the plug of the cock having a detent to engage such limiting-stops on the cock-body and on the opposite side a portion extended backward, a handle member pivotally secured to the backwardly-extended portion of the member secured to the plug and shaped to pass round that member, such handle member having a detent on one side that will when the detent of the member secured to the plug is against one stop'on the cockbody engage the other stop and prevent rotation of the plug, but which may be lifted clear of the stop by the upward movement of the handle member and a check to limit the upward movement of the handle beyond what is required to effect such clearance.

4. In adevice of the class described, the combination with a stop- cock having stops 3 and 4 to limit the movement of thehandle, a member 7 secured to the plug, such portion having a detent 8 and a pivot-support 10, a handle 11 divided as at 12 to pass round the member 7 and be pivotally connected to and having a recess 13 to rest over the detent 8 and a detent 15 that will engage one stop of the cock-body when the detent 8 is in engagement with the other and checks 16 to limit the upward movement of the handle.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

DAVID INCHES. EDWARD JAMES HOSKER.

Witnesses to the signature of David Inches:

WILLIAM ARNOTT, ANDREW PHINNISTER.

Witnesses to the signature of Edward J. Hosker:

HENRY L. MORLEY, SIDNEY (J. BURTON.

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