US1469890A - Cooking stove - Google Patents

Description

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J. E. CHAMBERS COOKING STOVE 1921 3 Sheets-Sheet 1 wuc'no'a Jh/ E. C/mmbra,

Filed Aug. L5 4 .llllllwllir J. E. CHAMBERS COOKING STOVE Filed Aug. 15 1921 3 Sheets-Sheet 2 @et 9, H923. Egg@ J. E. CHAMBERS COOKING STOVE Filed Aug. 15. 1921 3 Sheets-Sheet 5 Patented ct. 9, 1923.

JOHN E. CHAMBERS, OF SHELBYVILLE, INDIANA.

COOKING STOVE.

Application filed August 15, 1921. Serial No. 492,253.

To all whom t may concern:

Be it known that I, JOHN E. CHAMBERS, a citizen of the United States, residing at Shelbyville, in `the county of Shelby and State of Indiana, have invented `a new and useful Cooking Stove7 of which the following is a specification.

It is the object of my invention to produce a combined gas range and tireless cooker, wherein a tireless-cooker hood is mounted for Vertical movement over a burner on a gas range so that the food being cooked need not be moved in order to put it When heated into the tireless cooker, wherein such hood is easily and simply operable and remains in either opened or closed position, with tight joints in the latter position, wherein the hood when opened is out of sight beneath a canopy which also serves to carry ofi' any fumes and is provided with an openable and removable front which permits easy and thorough cleaning, and wherein the hood and the gas valve are suitably interconnected to make the operation fool-proof.

The accompanying drawings illustrate my invention: Fig. 1 is a front elevation of a gas range embodying my invention; Fig. 2 is a side elevation of such gas range; Fig. 3 is a plan of the burner-table, with some parts removed; Fig. 4 is ay partial section onthe line 4-4 of Fig. 3; Fig. 5 is a detail of the interconnection between the hood-control handle and the gas valve, with the gas shut off and the hood closed; Fig. 6 is a view similar to Fig. with the gas turned on and the hood opened; Fig. 7 is a front elevation of the parts shown in Fig. 5; Fig. 8 is a view somewhat similar to Fig. 5, showing the interrelation ofthe hood-control lever and the gas valvewith a slightly different form of interconnection, the gas being shut 01T and the hood closed; Fig. 9 is a fragmentary vertical section, on the line 9-9 of Fig.

1, showing the openable andremovable front of the canopy; Fig. 10 is a front elevation, in .partial section, of the eccentric segments to which thechains leading to the hood and counterweight respectively are connected; and Fig. 11 is a plan of such eccentric segments, with one of the segments in section.

The range has a main frame 10 supported on legs 11, and the frame is shown as supporting at one side an oven 12 and a broiler 13 (with neither of' which my prese-nt invention is concerned), and as supporting at the other a burner table 14, which as shown has two front burners 15 and 16 with their controlling gas- valves 17 and 18 respectively and two rear burners 19 and 20 with their control gas valves 21 and "22 respectively, the gas for all four of the burners being supplied by the usual gas-supply pipe 23 extending along the front of the range. The invention covered by the present application is not concerned with the details of the burner table or the mounting of the burners thereon, further than the fact that each of the rear burners 19 and 20 lies within an upwardly flaring cone frustum which at its upper end lies just beneath a fiat top 25 which has the usual holesfor the burners and for the grates 26 over such burners.

A canopy 30 overlies the two rear burners 19 and 20, extending from the side wal129 of theibroiler 13 to an end wall 31 which is supported on the end of the burner table 14. This canopy is provided with a back 32 eX- tending from the top of the canopy to the burner table 14, a closed top 33, end walls formed by the side wall 29 of the broiler and oven and by the end wall 31, and a front 34. but is open at the bottom for the purpose of catching any rising fumes from the rear burners and also for receiving the lireless cooker hoods as hereinafter explained. The fumes which are caught by the canopy are led therefrom into any suitable flue35. The bottom edge of the front 34'is sufficiently high to permit ordinary cooking utensils to be placed beneath the canopy on the rear burners. f v

The canopy front 34 is both liftab-le (see dotted lines Fig. 9) and removable. To this end, it has sector-shaped ends each provided with an arc-sl1aped slot 41 having an outwardly opening notch 42 at about the middle thereof, which slots receive pins 43 projecting toward each other from the walls 29 and 31; and these sector-shaped ends 40 are connected by the' sheet-material exposed portion of the front, shown as arc-shaped. The front 34 has a short downwardly projecting bottom flange 44 for bearing against stop-lugs 45 projecting from the walls 29 and 31 to limit the downward swing of the front; and also has a short upwardly pro'- jecting flange 46 which when the front is swung down lies closely behind a downwardly projecting flange 47 at the front ed e of the canopy top 33. The front 34 may ge raised by swinging upthe lower edge thereof, about the pins 43 as an axis; and may be held in raised position by sliding it slightly rearward, as is indicated in dotted lines in Fig. 9, so that the pins 43 are not quite in the ends of the slot 41 and the upper ends of the sector-shaped end members 4() bear against the under faces of flanges 48 which project from the walls 29 and 31. rllhe raised front 34 catches the fumes from the front burners 15 and 16 and the canopy carries such fumes to the flue 35. llf it is desired to remove the front 34, to get access t0 'the space beneath the canopy for any reason, the raised front 34 is simply slid farther backward until the notches 42 reach the pins 43, whereupon the front may be dropped out of position, Athe pins 43 passing through such notches. This can be done easily and simply. When itis again desired to close the canopy the front may .be returned to position by the reverse operation.

Over each of the rear burners 19 and 20 is hung a vertically movable hood 50,'which is conveniently cylindrical in shape with an open bottom and a closed top, and is made with heat-insulating sides and top, as by having inner and outer sheet-metal walls with the space between filled with heat-insulating material, such as mineral wool. Each hood is hung from a chain 51, which passes over a pulley 52 in the top of the canopy 30 and then rearward over a pulley 53 at the-rear and then downward to a pulley-segment 54 fixed on the rear end of a shaft 55 mounted in the frame 10 and extending to the front thereof and provided with an operating crank-handle 56.v By turning the crank 56 the hood 50 is either raised into the canopy 3() or lowered onto the flat top .25, being substantially concealedwhen raised, and when lowered fitting closely against the flat top 25 and surrounding any utensil on the associated rear burner to prevent the escape of heat from such utensil and the material within it. In thus holding in the heat, the hood 50 is assisted by the closed bottom formed by the cone frustum 24.

The hood 50 will remain in either upper or lower position. To this end, a counterweight 60 is provided'rfor each hood, which counterweight is carried by a chain 61 wound on a pulley-segment 62 similar to the pulley-segment 54, and also fixed on the shaft The chains 51 and 61 lead upward from the segment 54 and downward from the segment 62 respectively, but both on the same side of the shaft 36, so that one chain is unwound from its pulley segment when the other is wound on its pulley segment. The two segments 54 and 62 are each eccentricallv mounted on the shaft 55, with the eccentricity substantially opposite, so that when the hood is lowered. asthe left-hand hood is shown in Fig. 1, the effective radius or lever arm by which the chain 51 acts on the shaft 45 is greater than that of the reeaeeo chain 61, while when the hood is raised, as the right-hand hood is shown in Fig. 1, the reverse is the case. In consequence, the counterweight 60 over-balances the hood when the latter is raised, and tends to force it upward to and hold it in its uppermost position; but when the` hood is lowered or is near its lowermost position the weight of the hood over-balances the counterweight, so that the hood tends to move downward into tight engagementv with the flat top 25. rllhe pulley- segments 54 and 62 are 'held in fixed position on the shaft 55 by being attachedvto spider arms 63 by bolts 64, thel spider arms being rigid on the shaft 55; and the pulley-segments are made angularly adjustable in position on the shaft, as by providing each of them with a series of holes 65, an one of which may receive the bolt 64, an by providing the ends of the spider arms 63 with two or more holes similar to the holes 65 but differently spaced.

To guide the hoods 50 in their vertical movement, and to prevent them from interfering with each other, I preferably provide a vertical guide rod 66 against which the edge of the hoods may" bear as they move. For safety purposes it is desirable to interlock the hood control and the gas-valve control of each rear burner. l' have shown two such interlocks, for the left-hand and right-hand rear burners respectively. Both interlocks prevent the complete lowering of the hood while the gas is on, though they permit the partial lowering of the hood to accumulate heat while the as is on; and if the hood is partially close and the gas is turned 0R such turning off both interlocks cause the hood to close automatically. The

interlock for the left-hand burner also prevents turning on of the gas while the hood is closed. In each case illustrated, the interlock consists of a vertical rock-shaft 70 provided with an upper arm 71 which cooperates with the handle of the corresponding gas valve 21 or 22, and with a lower arm 72 which cooperates with the crank handle 56. f The crankhandle 56 is on a sector plate 73 of considerable angular extent, so that it strikes the arm 72 or a rearwardly projecting finger 74 from such arm whensuch arm is forward, as shown in Fig. 6 or in .dotted lines in Fig. `8, so that'then the associated hood 5() cannot be lowered completely but is stopped while still some distance above the flat top 25. l/Vhen the arm 72 is pushed in, however, as indicated in Fig. 5 and in vfull lines in Fig. 8, it can be passed by the sector plate 73, thus allowing the complete closure of the hood 50; which will take place automatically if the hood has already been lowered to a point where the weight of the hood overcomes the weight of 4the counter-weight 6. rll`he position of the arm 72 is controlled by the handle of 'the associated gas valve 21 or 22. In the left-hand interlock the arm 71 has pivotally mounted thereon a fork which fits over the handle of the gas valve 21, so that the arms 71 and 72 are swung back when the gas valve 21 is shut olf, as is indicated in Fig. 5, thus allowing the closureA of the hood, but such arms are swung forward when the gas valve isopened, as is indicated in Fig. 6, so that then the closure of the hood is prevented because the arm- 72 interferes with thel movement of the sector plate 73; and in addition, when the hood is closed the sector plate 73 prevents the arm 72 from moving forward,

and in consequence the fork 75 prevents the handle of the gas valve 21 from being moved to turn the gas on. In the right-hand interlock, the fork 75 is omitted, and instead the end of the arm 71 is merely in position to be engaged bv the handle of the gas valve 22 when" the latter is turned ofl", so that the turning off of the gasshifts the .arm 72 to the full-line position (Fig. 8) to allow the l complete lowering of the hood, while when the gas valve 22 is turned on the arm 72 is pushed forward by a leaf spring 76 into position to prevent the complete movement of the sector plate and thus to prevent the c'omplete closure of the associated hood.

The right-hand interlock, however, does not prevent the turnin on of the gas while the hood is closed, in t is respect diering from the left-hand interlock.

I claim as my invention:

1. In a cooking range, the combination of a heating element, an open-bottom canopy thereover, said canopy having a depending front the bottom of which is higher than said heating element, and an-open-bottom heat-insulating hood vertically movable over said heating element beneath said canopy.

2. In a cooking range, thecombination of a heating element, an open-bottom canopy thereover, said canopy having a depending front the bottom of which is higher than said heating element, and an open-bottom heat-insulating hood vertically movable over said heating element beneath said canopy, szild depending canopy front being remova e.

3. In a cooking range, the combination of a heating element, an open-bottom canopy thereover, said canopy having a depending front the bottom of which is higher than said heating element and which can be swung vertically to different positions, and an open-bottom heat-insulating hood vertically movable over said heating element be neath said canopy.

4. In a cooking range, the combination of a heating element, an open-bottom canopy thereover, said canopyy having a depending front the bottom of which is higher than said heating element, ani an open-bottom heat-insulating hood vertically movable over said heating element beneath said canopy, said depending canopy front being arranged to be swung forward and upward to extend the canopy forward.

5. In a cooking range, the combination of a heating element, an openbottom heatinsulating hood vertically movable over said heating element, a flexible member by which said hood is hung, and a counterweight connected to said flexible member, and means whereby when the hood is lowered it overbalances said counterweight and holds itself tight upon the heating element.

6. In a cooking'range, Athe combination of a heating element, an open-bottom heatinsulating hood vertically translationally movable over said heating element, a counterweight for said hood, and connections.

between said hood and said counterweight which varies their relative mechanical ad vantages as the hood is moved to different heights.

. 7. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically translationally movable over said heating element, a counter weight for said hood, and vconnections between said hood and said counterweight for giving the counterweight the mechanical advantage over the hood when the hoodl is lifted and for giving the hood the mechanical advantage over the counterweight when the hood is lowered.

8. In a. cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said lheating element, a counterweight.. flexible supporting members from which said hood and said counterweight are hung, and eccentric pulley mechanism connected to said flexible members for varying thel relative mechanical advantages of the' hood and the counterweight as the hood is .raised and lowered. g

9. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element, a counterweight,'flexible supporting members from which said hood and said counterweight are hung, and eccentric pulley mechanism connected to said flexible members, said pulley mechanisln being arranged to increase the mechanical advantage of the counterweight relative to that of the hood when the hood is raised and to decrease. it when the hood is lowered.

10. In a cooking range, the combination of a heating element, an open-bottom heat# insulating hood vertically movable over said heating element, a counterweight, flexible supporting members from which said hood and said counterweight are hung, a shaft, and two pulley-segments mounted thereon and connected respectively to the flexible iso 3, l Maase@ and connecte-d respectively to the flexible members of the hood and the counterweight, said pulley-segments being eccentricl on the shaft. f

12. In a cooking range, the combination `of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element. means controlling the heating element, and means for ralslng and lowering said hood, said last two means having interlocking interconnections.

13. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element, means controlling the heating element, means for raising and lowering said hood, and' means associated with both said heat-control means and said hood-control means to prevent lowering of the hood whilethe heating element is in operation.

' 14. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element, means controlling the heating element, means for raising and lowering said hood. and means associated with both said heat-control means and said hood-control means to permit partial lowering but to prevent complete lowering of the hood while the heating elementv is in operation.

l5. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element, means controlling the heating element, means for raising and lowering said hood, and means associated wth both said heat-control means and said hood-control means to prevent operation of said'heating element while the hood is lowered.

16. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element, means controlling the heating element, means for raising and lowering said hood, and means associated with both said heat-control means and said hood-control means and acting whenthe hood'is in a given position to cause lowering of the hood when the heating element is put out of operation. l

17. In a cooking range, the combination of a heating element, an open-bottomheatinsulating hood vertically movable over said heating element, means controlling the heating element, means for raising and lowering said hood, means associated with both said A heat-control means and said hood-control means to permit partial lowering but to prevent complete lowering of the hood while the heating element is in operation, and to cause lcomplete lowering of the hood when the heating element is put out of operation while the hood is partially lowered.

18. In a cooking range, the combination of a heating element, an open-bottom heatinsulating hood vertically movable over said heating element, means controlling the heat-- ing element, means for raising and lowering said hood, and means associated with both said heat-control means and said hood-control means to canse complete lowering of the hood when the heating element is putout of operation while the hood is partially lowered.

In witness whereof. I have hereunto set my hand at Shelbyville, Indiana, this 27th day of July, A. D. one thousand nine hun dred and twenty one.

.torni E. CHAMBERS'

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