US821633A - Gas-stove. - Google Patents

Description

' my inventiona side elevation t ereof.

Nrr sArirs ENT i"IEQ GAS-erover Specification of Letters Patent.

latented May 29, 1906.

Appiimtimi nei August 3,1905; saai in. 272.487;

'Z'.flV (LLL whom, t nca/y concern:

, Be it known that I, GEORGE Wa GRAVES, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Gas-Stoves and I do hereby declare the following to be a full, clear, and exact description of the saine, referencebeing had to the accompanying drawings, forming a part ofthe specification, and to the reference-numerals marked thereon;

My present invention relates to gas stoves or ovens which are heated by suitable burners and it vhas for its object to provide means whereby it is impossible to inadvertently open the valves which control the flow of gas to the burners without first opening the ovendoor, thereby obviating Ithe possibility, of'an explosion from an accumulation of gas in the oven-chamber.

To these and other ends my invention consists-in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out inthe claims at the end of the specification. I i

In the drawings, Figure 1 is a horizontal sectional view through a gas-stove, showing plied thereto. F ig. 2 is a Fig. 3 is a vertical sectional view on the line 3 -3 of Fig. 2; and Fig. 4 is a view of a modiiied form, showing theoVen-door partly open.

Similar referencesnumerals in the several i, figures indicate similar parts.

In the drawings I have shown my invention applied to a well-,known form of gasstove provided with the oven 1, which is normally closed by a door 2 and is separated from the broiling-cha'mber 3 by the ovenbottom 4. The burners (indicated by 5 and 6) may be of the usual or any preferred con-v struction and are located 1n the broilingchamber 8 below the oven-bottom, the burners being connected, as usual, with the supply-pi e 7, from which the llow of gas is controlled) by the valves or cocks 8. Provided at the exterior of the stove ad'acent the burners and also connected to t e su plypipe'7 is a lot-light controlled by a va ve 9 and provi ed with the branches 10, leading, to the burners 5 and 6. These valves 8 and 9 are usually located at one side of the stove and ne'ar the bottom thereof, where they may be accidentally opened in numerous ways and gas allowed to escape into the oven-chamber without the fact being known to the operator of the stove until an attempt is made to light the burners, when the volume of collected gas is ignited, causing an explosion which To obviate such an.

may result disastrously. occurrence, I 'have provided in'ieans coperat- 'ing with the alves and the oven-door in such a manner that the valves when closed can only be adjusted to permit the flow of gas to the burner after the oven-door is opened.. Such an arrangement performs the dual purpose of preventing gas from escaping into the oven, and by requiring the operator to open the oven-door the oven-chainber will be ventilated, so that an explosion of gas escaping therein, even after an operatorhas deliberately opened one of the valves, is prevented.

In carrying out the present embodiment of my invention I locate on the exterior wall 11 ofthe stove adjacent the valves 8 and Q a bar 12, the rear endthereof being reducedv somewhat at 12, forming a shoulder 14, between which and a bracket 15, supporting the end of the bar, a spring 16 is interposed, said spring normally tendingto move the bar forwardly toward the front of the stove. The forward end of the bar is supported and guided by a securing device, such as a rivet 13, projecting through an elongated aperture, the end of which abutting the rivet limits the outward movement of the bar. The latter' is provided with projections 17, coperating with the valves to lock them a ainst rotation, which is preferablyaccomplis led by making the projections in the form of resilient wire loopsA or awls adapted to surround the valve-han les 17', each loop having lan offset portion 18 at 'its end, with which. the end of the handle may engage to move its locking projection laterally to enable the handle to pass into the loop 17.. The handles of the valves or cocks 8 and 9 extend when in closed position ina direction parallel with that of the bar 12, and the bar is adapted to be moved against the action of the spnin 16 by engagement with a projection 19 on t e door 2, the door being normally held closed by the usual latch 20, and inasmuch as the'loops 17 are so located that they can freelypass 'over the ends of the handles of the lcocks 8 and 9 when the ovenedoor is closed it will -be seen that they tend to prevent the valves from being opened accidentally, although permitting the latterA to be closed when the ovendoor is shut. If, however, it is desired to close any of the valves which may be open when the oven-door is closed, the handle is caused to engage the oli'set portion 18 of its locking projection 17 and deects the latter until it comes opposite the loop or recess therein, when the valve is lockedV securely in place.

In Fig. 4 the lookin projection or pawl 17a is provided with a coi 21, which permits the aWl to yield more easily on a'ccpunt of the on er length ofthe wire employed.

he operation Will now be clearly understood. When it is desired to light the burners 5 and 6, the oven-door is opened, which allows any gas that may have accumulated in the oven from whatever cause to escape,

' and the bar 12 beinor then unrestrained is moved forward by the spring 16, carrying' the loops of the projections or' pawls'17 out of engagement with the handles of the valves or cocks 8 and 9. The latter may then be rotated and the burners lighted from the pilotlight in the usual manner.

The appliance is extremely simple and can be easily applied to stoves already in use,

and as it removes the possibility of explo-v ont of engagement with the valve When the door is open.

2. The combination with a chamber, a door for closing said chamber, a gas-burner, a supply-pipe connected to the gas-burner and a valve therein, of a member operated by the door which tends to prevent the opening but permits the closing of the-valve by hand when the door is closed.

3. In a stove, the combination with a chamber having a door, a burner, a valve for controlling the supply of gas to the burner, of asliding member having means for locking the valve in closed osition, said. means being outv of operative re ation to the valve-handle when the door is open.

4. in a gas-stove, the combination with an oven having a door, burners and a pilot-light for said burners, valves for controllinfy the su pply of gas to said burners and pilot-light,

of a sliding member provided With rojections f'orenga inglthe valves to hol them closed, means or operating the sliding mem-.

ber to causethe projections to be -disengaged from the valves and a pro] ection on the door coperatmg with the member when the'door is closed to cause the engagement of the projections on the bar with the valves.

5. in a gas-stove provided with an oven or chamber having a door, a gas-burner, a valve controlling the ovv of gas to the burner, of'a yielding catch cooperating with the valveandle adapted to be moved into locking position when the door is closed.

YEGRGE W. GRAVES. W'

itness: l

G. ILL/inn RICH, Waimea B. PAYNE

Images