US993372A - Gas-cock. - Google Patents

Description

H. S. HIPWELL.

GAS COCK.

APPLIOATION FILED APB..15, 1910.

993,372. Patented May 30, 1911.

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HOWARD S. HIPWELL, OF READI NG', PENNSYLVANIA.

aeasca Specification of Letters Patent.

GAS-COCK.

Patented May 30, 1911.

Application filed April 15, 1910. Serial No. 555,719.

To all whom it may concern:

Be it known that I, HOWARD S. HIPwnLL, a citizen of the United States, and a resident of the city of Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Gas-Cocks, of which the following is a specification.

My invention relates particularly to gas cocks, and has for its object the provision of improved means for insuring against such careless or accidental operatlon thereof as frequently endangers life.

The invention is fully described in con nection with the accompanying drawings and the novel features are clearly specified in the claims.

Figure 1 is a side elevation of a gas cockdevice embodying my complete invention, all the parts being represented in the normal closed position. Fig. 2 is a plan view corresponding with Fig. 1, and Fig. 3 is a similar view showing the main valve opened. Figs. 4.- and 5 are separate views of the supplemental safety valve and the attachments thereto for its cooperative connection to the main valve.

The stop cock body 2 is formed with a burner tube 3 and is adapted for the reception of a turn-plug valve 4: as usual. In my complete device as shown, a second stop cock body 2 is formed in connection with the main body 2, and receives a supplemental or safety turn-plug valve 4P which cooperates with the main valve 4 in controlling the flow, of gas to the burner, by means of connecting mechanism as hereafter described, so as to most effectually safeguard against escape of gas; the main valve 4: however being provided with means for automatically looking it in closed position which may be very advantageously employed independently of the additional safety valve 4? though most completely utilized in connection with the latter as shown. This automatic locking means for the turn-plug valve 4: comprises a sheet-metal latch device 10 which is pivoted at a point 11 near the base of the body 2, and has an end portion 12 adapted to normally bear upon a seat or shelf 13 formed on the body 2 while its lower edge portion 14 depends below said body. When the flattened finger-end 15 of the turn-plug valve 4: is turned from the open position indicated in Fig. 3 into the closed positionindicated in Figs. 1 and 2,

the latch is raised thereby from its supporting seat 13, until the valve strikes the stop 16 provided as usual on the cock body, when the latch automatically falls into looking position as shown in Fig. 1, so as to positively prevent accidental opening of the valve. lVhen however the operator takes hold of the finger-end 15 for the purpose of opening the valve, his finger naturally comes into contact with the depending edge portion it of the latch so as to raise the same and free the valve for the desired opening movement. In order to most effectively utilize the supplemental valve 4& as a further safe guard, I provide for cooperatively connecting said valves so as to simultaneously effect the closing and locking of both valves, and for positively retaining the supplemental valve in closed position until the main valve is first opened. To accomplish this I provide the valve '1, as shown, with a fixed crank arm 20, which is pivotally connected by a link 21 to a rock-arm 22 loosely mounted on the end of the supplemental valve P; said supplemental valve being also provided with a fixed arm 23, which is so set as to cause the depending pivot-pin 2a of the rock-arm 22 to engage said fixed arm 23 during the closing movement of the main valve, and thereby cause the valve 4: to be simultaneously turned to closed position. When thus set, the main valve 4 is locked by the latch 10 as already described, while the supplemental valve 1 is prevented from turning in the normal direction by the connecting link 21, and in the reverse direction by an ordinary stop 25 on the cock body 2. After the main valve 4 is opened, as indicated in Figs. 1 and 2, the supplemental valve 45 may be separately opened to permit a flow of gas to the burner, but when the main valve is closed the supplemental valve is automatically closed with it, and also locked by the main valve against accidental turning.

lVhat I claim is 1. In a gas-cock having a turn-plug valve with a flat finger-end; a cock body provided with a closure-stop for said valve, a latchpivoting ear, and a latch-supporting seat; and a latch pivoted to said ear and having its free end supported on said seat and a depending portion adapted to normally engage said finger-end when the valve is in closed position.

2. A double stop-cock device comprising a main turn-plug valve, a supplemental In testimony whereof, I afliX iny signaturn-plug valve, crank arms fixed t0 the reture, in the presence of tWo Witnesses.

spective valves, a rock-arm coaxial with said supplemental valve and adapted to 0p- HOWARD HIPWELL' 5 eratively engage 0r disengage the crank arm Witnesses:

thereon, and a link connecting the main D. M. STEWART,

valve crank arm and said rock-arm. W. G. STEWART.

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

Washington, I). G.

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