US2175420A - Cooking stove - Google Patents

Description

0f.10,.1939. 'L L. WILLIAMS .TAL .2,115,420

v COOKING sTovE Filed sept. 17, 1937 hamaca. 1o, 1939 f cooxmo s'rova e Arthur.. winmix,

f Langlois, Huntington ywood. and Arthur J.l Park, Calif.; said LangloisasaignortosaillwllllamsH M. Application september- 1'z, 19a'z, serai No. `164,344 z cnam. (ci 12e-42) I This invention relates to cook-ing stoves and relates more particularly to cooking stoves of the' acter referred to are individually controlled by manual valves at the iront ot the stove and are usually ignited by a pilot burner that remains lit at allgtimes. Quite frequently the 'cover for l 'the top burners is lowered to its closed position .when one or more oi the burners are ignited with the result that the cover is seriously injured or destroyed -by the heat from the burners. Further, a top burner valve may be inadvertently Il opened or may be opened by a child when the cover is closed, resulting in igniting of the burner and the accompanying injury tothe cover, or resultingin the escape of unburned gas under the close cover and a possible explosion. y 2li k Another object of this invention is to provide an automatic control for the top burners of a cabinet type cooking stove that prevents ignitingv of the" top burners when the cover is vclosed and that automatically extinguishes the top burners when' the cover is moved to the closed position. Another object of this invention is to provide a [cooking stove of the character mentioned embodying a valve for controlling the pipe whichv supplies the top burners and a control for the 86 valve operated by movement of the cover whereby s the supply of gasto the burners is cut oiI when the coveris closed. 's I Another object of this invention is to provide a cooking stove of the character mentioned in 40 which the control for governing the valve of the supply pipe for the top burners is positive, op-

erating to close the valve when the cover is moved toits closed position and operating to automatically open the valve when the cover `is raised to its open position.

Another object of this invention is tjo provide a cooking stove of the character mentioned in which the control means ior'the top burners does not in any way ailect the pilot burner for the top burners, or aiiect any ofthe other burners of the range. y v

A further object of this invention is to provide a control o! the character mentioned -ior the top burners oi a cabinet type cooking stove that is ,Il simple and inexpensive to embody in a stove at the time oi manufacture and that may b readily embodied in a previously constructed stove 'as an attachment The various objects and features of our invention will be fully understood from the following 5 detailed description of' a typical Y' preierrediorm and application oi the invention, throughout which description reference is made to the accompanying drawing, in which:

Fig. 1 is a fragmentary perspective view of a 10 cooking range or stove embodyingthe control of the present invention showing the cover for the top burners in the raised position. Fig. 2 is an enlarged fragmentary end view of the stove *15' showing the cover in the raised position and with a portion broken away to illustrate the control mechanism. .Fig. 3 is an enlarged fragmentary .plan view of the stove with a portion of the. grill or plate broken away to illustrate the control." means- Fig. 4 is an enlarged side elevation of the 2 stove showing the cover in the closed position with-a portion o! the stove side broken away to illustrate the control mechanism, and Fig. 5 is .Y an enlarged fragmentary vertical sectional view u illustrating the connection between the cover and the link. 'I'he present invention may be embodied in stoves of various makes and constructions and may be in the form of an attachment for previously constructed stoves. In the following de tailed description we willdescribe a simple, preferredv form of the invention applied to or embodied in .a typical gas range of the cabinet type, it being understood that the invention is 35 not to be construed as limited or restricted to the speciilc form or application of the invention about to be described, but is to be taken as includingy any features that may fall within the scope of the claims. K .-1 '4o The portion of the typical range or.` stove il1us. trated in the drawing includes a rectangular body I0 having an oven compartment Ii, a top burner grill or plate I2, a front panel I3, drawers I4 and a rear guard rail i5 projecting upwardly `along 45 its upper rear edge. Acover i0 is hinged to the range body -IO to be movable between the open position illustrated in'lilgs. l, 2 and 3 `oi the drawing and the closed position illustrated in v Fig. 4 of the drawing.. The cover Il is provided 50 to cover and conceal the grill or plate 'l2' and the top burners and may be hinged to' the range body Il along its rear edge in the'usual' manner. Lugs l1 project rearwardly iromthe rear edge portion of thel cover Il and springs I8 are con- Il nected with' the lugs n to eounterbaince the cover I3 and renderl it easy to move.

- The particular range or stove illustrated in the drawing has four spaced top burners I9 positionedbelow openings 23 in the grill or plate I2.

4Suitable manifoldsor branch pipes 2| extend at the front panel I3 to govern the passage of gas through a pipe 25 which extends to the burner (not shown) of the oven II. Flash tubes 23 radiate outwardly from a pilot burner 21 to the spaced top burners I9 and are operable to conduct gas from the burners I9 to the pilot burner 21 and to conduct the resultant llames back to the top burners I9 to ignite the same. In accordance with the invention a pipe 23 connects the pilot burner 21 with the oven supply pipe 25 lwhereby the burner 21 receives its-gas from the pipe25. A pipe 29 joins the pipe 25 and extends to the oven Il of the stove to supply the pilot burner (not shown) of the Voven with gas. The pilot burner pipes 23 and 29 are connected with the oven supply pipe 25 at points at-the up stream side ofthe .oven control valve 23 so that they are not controlled by the control valve 23. 'I'he header pipe 22 and the oven supply pipe 25 receive their supplies `of gas inthe manner to be hereinafter described.

The stove control or burner control of the present invention includes, generally, a line or pipe 30 for conducting gas to the header pipe 22 of the top burners I9. A main supply pipe 3| furnishing gas to the oven supply pipe 25 and the Pipe 33, a valve 32 controlling the pipe 33 and anoperative connection 33 between the cover I 3 and the valve 32 whereby opening of the cover v I3 opens the valve 32 and closing of the cover I3 closes the valve 32.

The pipe 33 for carrying gas to the header pipe 22 of the top burners I9 may be positioned differently in dinerent stove constructions. In the particular case illustrated in the drawing the pipe 33 is arranged below the grill or plate I2 and extends rearwardly from one end of the pipe -22 in adjacent parallel relation to an end .33 o! the stove body I3. The pipe 33 may be connected with the header pipe 22 by a suitable L yns 35. 'I'he main supply pipe 3| extends frcm the gas supply pipe or service line (not shown) to the range or stove.V In accordance with the usual Practice the pipe 3I extends upwardly at therear..

of the stove body I3 and passes forwardly through an opening in the rear wall 33 of-"the stove body I3. A suitable T-ntting 31 connects the supply pipe 3| with the oven supply pipe 25 and the pipe 33. It is to be noted that the oven supply pipe 23 is connected with the main sup- Ply pipe 3| independently of the pipe 33 so that the control of the pipe 33 by the valve 32 does not aiiect the pilot burner 21 or the burners of the oven.

The'valve 32 is the safety control valve of the invention and is proyided to govern the pipe 33 which supplies gas to the top burners I3. TheV valve 32 is connected or interposed in the pipe 33 -adjacent the T-fltting 31. The valve 32 is in the The present inventionis not pri.

.nature of a plug valve or stop cock and embodies a projecting turnable stem 33. An operating lever 39 is fixed to the valve stem 33. The connection between the lever 39 and the valve stem 33 is preferably such that the lever may be set in various rotative positions with respect tothe stem 33 and the plug of the lvalve 32. In the arrangement of parts illustrated in the drawing the valve 32iis positioned with its stem 33 projecting laterally or horizontally toward the adjacent side or end 33 of the stove body I0. The valve 32 is preferably such that turning of the lever 39 through an arc of substantially 90, effects opening or closing of the valve, depending upon the direction of turning of the lever.

'I'he operative connection 33 between the valve 32 and the cover I5 is a positive automatic control for the valve whereby lifting of the cover I from its closed position to its open position opens the valve 32 and lowering of the cover I 6 from its vertical open position to its closed position closes the valve 32. The operative connection 33 includes a part connected.k with and movable by the cover I5. In the preferred construction illustrated in the drawing this part is in the nature of a link 43 pivotally connected with the cover I3. A clip or lug 4I is secured yto the cover I3 adjacent one edge to bein substantially the same vertical plane as the lever 39 of the valve 32. The lug II may be secured to the cover I5 by bolts or by welding 32, as illustrated. It is to be understood that if the control of the present 4invention is to be applied to a previously con- I3 and may receive the lug 3| when the cover is inits closed orhorizontal position.

The control or operative connection 33 further includes a pivoted bell crank I5. 'I'he bell crank 35 is supported on a ilxed pivot inadlacent relation to the valve 32. In the construction illustratedvin the drawing a hanger 33 is secured to an adjacent frame member I1 of the stove and has a pivot pin l33 which supports `the bell crank 45. The lower end of the link 33 is pivotally connecte'd with an arm A of the bell crank 3l. The connection between the link 33 and the bell crank arm A is preferably adjustable. In the case illustrated in the drawing a yoke I3 is adJustably threaded on the lower portion of the link 33 and is Dlvoted to the bell crank arm A to connect the link 33 with the bell crank 4l. The bell crank 35 includes a second arm B which is in angular nrelation to the arm A, A link 53 connects the bell crank arm B with the lever 33 of the valve' 32. The link 53 is preferably adiustably connected with the arm B and the valve lever 33. A clevis or'yoke 5I is adiustably threaded on one end of the link 53 and pivotally connects the link with the arm B. A similar clevis or yoke l2.

is adjustably threaded on the other end portion of the link 53 and pivotally connects the link with the outer end of .the valve lever 33.

The above described linkage comprising the link 33. the bell crank I5 and the link 53 connects the cover I3 with the valve lever 39 so that raising of the cover I3 from its closed position to its open position swings the lever 39 to the position 9,175,420 sillustrated in Figs. 1, 2 and 3 of the drawing where the valve 32 is open and movement of the cover i6 from the open position to the horizontal closed position illustrated in Fig. 4 of the drawing moves the valve lever 38 to the position where the valve 32 is4 closed. By adjusting the yoke I5 or by adjusting the yoke 5| or the yoke 52, or both of the latter yokes, the operative connection 33 may be made to close the valve 32 at any stage of downward movement of the cover I8. Thus the control or means 33 may be adjusted to eiect closing of the valve 32 when the,cover I3 is some distance from its horizontal position or when thecover i 6 is adjacent and approaching its closed horizontal position.

It is believed that the operation of the stove control or stove construction provided by the invention will be readily understoodl from the Vforegoing detailed description. Under normal operating conditions the pilot burner 31 as well asthe pilot burner (not shown) of the oven Il may remain ignited at all times. the cover I6 is in its open or vertical position illustrated in Figs. l, 2 and 3 of the drawing the valve 32 is open so that gas is supplied to the valves 23 of the top burners I9. Accordingly, the top burners I9 may be selectively and individually put into use by the valves 23. The burner of the oven I I may, of course, be controlled by the oven control valve 24 in the usual manner. When the top burners I9 are extinguished and no longer required the cover i6 may be swung to its closed substantially horizontal position illustrated in Fig. 4 of the drawing. This closing of the cover I3 operates to close the valve 32. It will be apparent that downward movement of the cover i3 is transmitted to the bell crank 4,5 by the link 40 causing turning of the bell crank and the link 53 in turn transmits movement Lfrom the bell crank to the lever 33 of the valve 32 so 4that the valve lever is moved to the position illustrated in Fig. 4 of the drawing Vwhen the cover is lowered to its closed position. Accordingly, the supply pipe of the top burners I3' is closed or cut oi! from the main supply pipe 3i i that one of the valves 23 is inadvertently opened or is opened by a child when the cover I3 is in its'closed position the burner i3 governed by the said valve 23 is notignited as the supplyof gas supplying the burners il.

is completely cut o!! from the header pipes Wheniti'sdeslredtousethetopburners llc! thestuvethecoverllisraisedtoitsopenor vertical poaitioniliultrted in F188. 1, 2 and 3.

o! the drawing. of the cover Il is accompanied by'opening of the valve'32. when the cover Il is raised the link I I'movcdby the cover Il transmits movement to the bell crank linkllisinmrnmovedbythebellcranktoswing Assuming thatA the valve lever 33 to the position illustrated in Fig. 2 of the drawing where the valve 32 is open. 'I'hus the header pipe 22 of the top burners II9 is automatically connected with the main supply pipe 3| when the cover is raised. It willbe oba served that the valve 32 does notlcontrol the pipe 25 and, therefore, opening and closing of the cover i6 does not in any Fray affect the pilot burner 27 or the burners of 4the oven i I.

The control means of the present invention assures the extinguishing oi thev burners i9 when the cover i6 is closed and deilnitely prevents ig niting vof theV burners is when the cover is in the closed position, thereby preventing injury and.

destruction of the cover i8 by heat from the burners i9 and avoiding the `danger of escaping unburned gas from the top burners oi.' the stove when the cover is closed. The control means of the invention is simple and inexpensive and may be readily embodied in typical ranges, and cooking stove constructions.

Having described only a typical preferred form and application of our invention, we do not Wish to be limited or restricted to the specific details herein set fdrth, but wish to reserve to ourselves any variations or modications that may appear to those skilled in the art or fall within the scope of the following claims.

Having described our invention, we claim:

1. In a stove, the combination of, a plurality of burners, a fuel supply pipe manually operable valves controlling the delivery of fuel from said pipe to the individual burners, a valve controlling said pipe and having a turnable control part, a

cover for the burners movable between open and closed positions relative to the burners, and an operative connection between the cover and the saidv valveoperable to open the valve when the.

cover is moved to the open position and operable to closethe valve whenthecover is moved to the closed position, said connection including a pivoted bell crank, a link pivotally connected `with the cover and the bell crank and a link pivotally connected with the bell crank Vand the said con-` trol-part of the valve whereby movement of the cover causes turning of the valve control part.

2. A-stove comprising, a body, spaced top burners on the body, ai hinged cover on the body' movable between a closed position where it covers the top burners and an open position where the top burners are exposed for use, a fuel supply Pipe, a header pipe in communication with the top burnersa pipe connecting the header pipe with the Asupply pipe, a valve'in'the last named pipe, and a positive operating lever connection between the cover and said valve closing the valve'whenthe cover is closed and. opening the valve when the cover is raised', said connection including, a link connected with the cover, a plvoted bell crank, a connection between said link and the bell crank, a link connected with the valve, and a connection between the last named link and the'r bell crank, at least one of the last named connections being adjustable.

' ARTHUR J. LANGLOIS.

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