US1048764A - Gas-cock. - Google Patents

Description

J. TOLHURST & A. WAIT.

GAS COOK.

APPLVIOATION nun APR. 25, 1912.

1,048,7 4, Patented Dec. 31, 1912.

Fig.2.

Witnesses: Y lnuen tors: 7/]mvd M JM A 44-42,

' .fective means is provided to lock any kind with the full knowledge of the person using ing of the valve to allow gas to escape when not so required.

. provided with notches a, cut in JOSEPH TOLHURST AND ALFRED WAIT, OF HAMILTON, ONTARIO, CANADE.

GAS-COCK.

Specification of'Letters Patent.

1912. Serial No. 693,198.

Application filed April 25,

To all whom it may concern Beit known that we, JOSEPH TOLHURST, a citizen of the Dominion of Canada, residing at 44 Picton street east, and ALFRED WAIT, a citizen of the Dominion of-Gana'da, residingat Mount Hamilton, both in the city of Hamilton, in the county of Wentworth, in the Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Gas-Cocks, of which the following is a specification.

This invention relates to an improvement in gas cocks whereby an economical and etof agas cook in such a manner that the gas, cannot be turned on by accident, but only itthereby preventing the accidental turn- The invention conslsts in a notched ring or washer attached to the body portion, the plug portion passing through the ring, and containing a flat thumb piece for operating the plug. A pawl made to engage with the notched ring. Saidpawl being flattened at the outer end as a thumbpiece to operate it, a spring to operate the pawl. The outer end of the spring terminates in an upward spring arm to keep'the pawl into engagement with the ratchet to lock the valve in the body portion.

The details of the invention will be more fully shown hereinafter. Reference'being had to the accompanying drawing, in which,'

Figure 1,-is-a side view of a gas cock'with safety device attached. Fig. 2, is an end view of the same. Fig. 3, is a view of the ratchet ring detached.

Similar letters refer to similar parts throughout the several views.

The improved gas cook comprises a body portion, A, and a plug portion B, the atter containing a flat thumb piece C, which must be. elongated to a sufiicient distance away from the operating parts for turning the plug portion or valve, and to prevent the accidental use of the thumb piece F; a ring or washer D, is formed on the body portion A, the proper place to shut off gas at the very point Where the li ht goes out and before the gas key has turne the full dista'nce required to ring the thumb piece 0, at right angles to the gas Patented Dec. 31,1912.

opening in the cock body, that is, before it.

is completely shut off, and also a notch to' the gas key or valve is completed. The said ring D, maybe made'of brass, iron, steel, or other material, and hardened if necessary in" order to secure good wearing qualities. The said ring is fastened securely to the body A, by being forced onto it and also secured by a pin'J, so that there is no ossibility of its turning around. It may urther be stated that the notches in the said ring are so arranged as to make it impossible to turn the gas key past the points where the cock is.

fully closed, or fully opened.

The latch or pawl E, with thumb attachment, is made of one piece of material (which like the ring D, may be made of brass, iron, steel or other material, and herdened if necessary and receives a twist to bring the outer en of it into a proper position for a thumb piece F, to operate the pawl end. The .C, (which as a groove cut in it or H,) by means of a wire spring G, which is bent upward at the outer end'G', and made to press upward against the under side .of

pawl E, is-secured to the-gas kIeIy ugs.

the thumb piece F, to keep the pawl in proper contact with the notched ring D; the.

steel, into the mold, or by sim ly putting.

the notches a, on the pattern, an castingin the usual manner.

From the above description it will be seen that the safety device, while bein quite easy to operate, cannot be unlocked y accident. The gas maybe turned off automati-.

cally without using the latch and one unacquainted with it may do so, but if wishiriigto turn the gas on again, will be prevente by the latch.

As the working parts of the locking device can be plainly seen by a erson standing in front of it, one glance show the necessity of placing the thumb on the latch to release it, and how to turn the lug without stooping'or turning to examme the rear of gas cock as many of the gas cocks have the stop at the rear end of the body which is a great disadvantage.

Having thus described our invention and its advantages, what we claim as novel and desire to secure by Letters Patent, is

A gas cock comprising a body portion and a plug portion, said plug portion comprisin a flattened thumb piece, a ratchet forme upon the body portion, air outstanding hori- .7 zontal flange carried by said plug portion, a pair of outstanding ears formed upon said flange, a pawl mounted between said ears and comprising a ratchet engaging portion and a flattened thumb piece which lies par allel with the flattened thumb piece of the plug portion and a wire member comprising a horizontally disposed portion which passes through'said ears and said pawl and at its terminal end bears upon said flange, and a vertical extension having a terminal end which bears against the fiat inner face of the thumb piece of the pawl whereby said wire spring member serves the double function of pivoting the pawl to the plug and holding said pawl into engagement with said ratchet.

Signed at Hamilton, Ontario, Canada,

this 20th day of April, 1912.

JOSEPH TOLHURST. ALFRED WAIT.

In'the presence of- MAUD GUEST, GERTIE NIOHOLSDN.

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