US1824312A - Safety device for gas ranges - Google Patents

Description

Sept. 22, 1931. B. VICTOR ET AL 1,824,312

I SAFETY DEVICE FOR GAS RANGES Filed Jan. 27, 1930 2 Sheets-Sheet 1 Inventor; B V cr01? EGHQRDEAE/PRMJM itomey Sept. 22, 1931. B. v.1cToR ET AL 1,824,312

. SAFETY DEVICE FOR GAS RANGES Filed Jan. 27, 1930 2 Sheets-Sheet 2 A itorney Patented Sept. 22, 1931 UNITED js rArEs PA E T, we P BENJAMIN VICTOR AND RICHARD E. ABRA'MSON, or enoivxynnw YORK steamy nnvionron Gesneiveris Application med January 27, 1930, 'seriainb; "423, 69.

This invention relates to safety devices for gas ranges and more particularly to devices of this character for automatically cutting oif the fuel supply when'the flame at the burner isextinguished accidentally.

An important object of the invention is to provide, in a manner as hereinafter set forth, a safety'device for gas rangesof the aforementioned character which will function L automatically when the liquid contents of a container which is being heated on the range boils over with .the liabilityof extinguishing the burner flame.

Another important object of the invention is to provide a safetytdevice for gas ranges which embodies a. spring controlled valve disposed inthe fuel supply pipe which is op,- eratively associated with a gravity actuated release mechanism whereby said valve will be automatically moved to :closed position when the release mechanism functions.

A further important object of the invention is to provide'a safety device for gas ranges of the aforementioned l'character "T125 which embodies manually operafble means for re-setting the valve in open position in an expeditious manner when it is so desired.

Still further objects of the invention are to provide a safety cdevice for gas ranges 30 which will be simple in construction, strong,

durable, eflicient in its use, which'will not detract in any way from the appearanceof'the gas range and which may be'manufactured atlowcost. L All of the foregoing and still'further objects and advantages of't-heinvention'will become apparent from'a study of the follow ing specification, taken in connection with the accompanying drawings {wherein like characters of reference designate corresponding ing parts throughout the severalviews, and wherein:, I

Figure 1 is a view infront'el'evatiori of a gas range showing a safety device, therefor constructed in accordance I with this invention installed thereon. 1 Figure 2 is a vertical cross section through the automatic spring controlled cut-ofi'valve.

Figure 3 is a view in elevation of the automaticcut off valve taken at right angles to,- F1gure2.j Flgure a is a horizontal cross section taken substantially onthe line 4'4 of Figure looking in the direction ofthe arrows. I

Referring to the drawings; in detail, the reference character l'd'esign'ates generally a conventionalgasrange provided, as usual, with the burners 2 having communication with the common gas supply pipe 3 through the medium of the manually'operable valve 4;. The pipe 3 extends through one side of the range 1' and has communications with a suitable source of supply.

Interposed in-the supply pipe 3 adjacent the outer side of the wall!) of the range is a valve designated generally by the reference numeral 6 and comprising a casing 7 having a tapered bore 8 extending downwardly thereinto and communicating with a-passage 90f uniform diameter throughout which extends to the lower end ofthe casing 7 On diametrically opposites'ides, the casing 7 is provided withmearis10+10 to couplethe threaded adjacent end-of the supply'pipe 3 to the valve. A tapered valve body in the form of a plug 11 is mounted for reciprocation in the bore 8 and is provided with a stem 12 which extends through the opening 9 and has mounted on itslower end a right angularly disposed latch plate 13 which, as seen to advantage in Figure 3 of the drawings, is provided adjacent one'end witha transverse depression or groove 14. 011 its upper end, the valve 11 isprovided withan integral lug 15 and a compressible coil spring 16 encircles said lug and has its lower end impinged'againstthe valve 11 and its upper end impinged against a closure cap'io'rzplug 17 threaded into the upper end of the; valve casing 7. 3 'f Hangers18 18 are rigidly secured to diametrically oppositesides of the valve casing 7 at the lower'end portion thereof through the medium of the screws 19 and said hangers extend downwardly on opposite sidesofthe latch plate 13 and are provided withinwardly offset portions 20-20 providing shoulders beneath said latch plate 13. Pivotally mounted between the inwardly offset portions 20 of the hangers 18-18 is a cam lever 21 adapted for engagement with the latch plate 13 for manually shifting the valve body 11 upwardly directed arm 22 which extends.

through the wall 5 of the gas range 1. Pivotally mounted between the free ends of the arm- 22 is a substantially horizontally disposed lever 23. One end of the lever 23 is disposed adjacent the valve 6, said-lever e-X- tending through a suitable opening (not shown) in the wall 5 of the range. The end of the lever adjacent the valve 6 has mounted thereon a roller 24 for engagement with an arcuate spring; controlled latch or keeper 25 which is pivotally mounted, as at 26, on the valve casing 7 and terminates in an acutely angled end portion 27 upon which is mounted a roller 28. adapted to seat in the recess or groove ll of the latch plate 13-, as illustrated to advantage in Figure 1 of the drawings. At its upper end, the latch 25-is provided with an integral stop lug 29 for engagement with the roller 24 for limiting the swinging movement of the lever 23. A coil spring 30 is disposed between the upper portion of the latch 25 and the valve casing 7 for normally urging said latch. toward its operative position. A receptacle 31. is suspended from the opposite end I portion of the lever 23 adapted to receive liquid from an inclined pan 32 removably supported in the range 1 beneath the burners 2' thereof. At its lower end, the pan 32 is provided with a discharge spout 33 disposed above the receptacle 31 in order that the liquid will be directed into said receptacle, as will be apparent. Equalizing springs 34 have one end secured to the arm 22 and their opposite ends secured tothe lever 23 in spaced relation on opposite sides of the pivotal supporting connection for said lever and the purpose of these springs is to assist in maintaining the lever 23in substantially horizontal inoperative position. c

In operation, assuming the device to be in inoperative position as illustrated in Figure 1 of the drawings, should any liquid which is being. heated on the range boil over, the samewill be precipitated into-the pan32 and gravit-ateto the lower end thereof whereit will be discharged through the spout 33-"into the receptacle 31. When thus weighted, the receptacle 31 will swing that end of the lever 23 downwardly and the opposite end thereof upwardly with the result that the arcuate latch 25 will 'be'shi-fted against the tension of the coil spring 30 in a manner to be disengaged from the l'atohplate: 13 and the valve 11 will be'moved downwardly to closed position,- as

seen in Figure'2, by the coil spring 16. It should be here mentioned that the valve body 11 is provided with a transverse port 35 adapted to register with the bores of the connections 1010 of the valve casing. lVith the valve 11 in the position seen in Figure 2, the fuel supply will be out off and the burner 2 extinguished. When it is desired to re-open the valve 6, the receptacle 31 is emptied and replaced on the arm 23. The cam lever 21 is swung in a manner to engage the latch plate 13 and force the valve body 11 upwardly to raised position against the tension of the coil spring 16 and the latch 25 is permitted to return to operative position by lifting upwardly'on the end of'the lever 23which supports the receptacle 31. 7

While the invention has been shown and described in association with. a domestic gas range, it is to beunderstood: that the same may be used in connection with any heating device or stove for which the sameis found adapted. I It is believed that themany advantages of a safety device constructed in accordance with this invention will be readily under stood, and although the preferedembodiment of the invention is as illustrated and de tion: in the valve casingand controlling the passage therethrough, resilientv means engaged with the valve body'yieldingly urging the same toward closed position,.a valve stem depending from the valve body and extending through the casing, a latch plate rigidly mounted on the free end of the valve stem, said latch plate provided with a. transverse groove adjacent one end, an arcuate keeper pivotally mounted intermediate its end on the valve casing and having. a right angus larly disposed extension on one end, a roller mounted on the extension engageablein the groove ofthe latch plate for retaining the valve in open position, and means for rocking the keeper in a manner to disengage the same from the latch plate comprising a pivotally mounted lever having one end disposedadjacent said keeper, a roller mounted cle in a manner to rock the lever and shift the keeper out of engagement with the latch plate. 1'

2. A safety device for ranges of thec'haracterdescribed comprising a valve casinginterposed inthe' fuel'sup'ply pipe of the-range,

a valve body mounted for reciprocation in the valve casing, resilient means for yieldingly urging the valve body toward its closed position, a valvestem extending from the valve body through the casing, a latch plate mounted on the free end of the valve stem and having a transverse groove adjacent one end, a spring controlled arcuate latch pivotally mounted intermediate its end on the valve casing and having a roller jour-- tween the free end portions of the arm, a

roller journaled on one end of the lever engageable with the latch insa manner to rock the same on its pivot out of'enga-gement with the latch plate, and meansassociated with the opposite end of the lever for shifting the same.

3. In combination with a gas control cock having a sliding valve member movable to open and closed position, spring means acting upon said valve member to hold the same neath the outlet of an overflow catch pan, and resilient means for holding said lever in a set position and for permitting the com bined-weight of said container and overflow to actuate said lever to release said latch member whereby said spring means will move said valve member to a closed position,

and an actuatin lever manually operable independently o said'fulc'rumed lever, and

engageable with said valve member to manually move the same toa-n 0 en position to allow said valve member to be engaged by said arcuated shaped latch member.

In testimony whereof we afiix our signatures.

BENJAMIN VICTOR.

RICHARD EDWARD ABRAMSON.

in closed position, and gravity actuating means for actuating said valve member to an open position against the action of said spring means, said gravity actuating means including a pivoted arcuate shaped latch member engageable with said valve member, a fulcrumed lever provided with a roller at one end for engagement with the curved side of said arcuate shaped latch member, a s

container supported upon the opposite end of said lever, and adapted to be disposed beneath the outlet of an overflow catch pan, and resilient means for holding said lever in a set position and for permitting the combined weight of said container and overflow to actuate said lever to release said latch member whereby said spring means will move said valve member'to a closed position.

4. In combination with a gas control cock having a sliding valve member movable to open and closed position, spring means acting upon said valve member to hold the same in closed position, and gravity actuating means for actuating said valve member to an open position against the action of said spring means, said gravity actuating means including a pivoted arcuate shaped latch member engageable with said valve member,

a fulcrumed leverprovided with a roller at one end for engagement with the curved side of said arcuate shaped latchsmember, a container supported upon the opposite end of said lever, and adapted to be disposed be-

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