US2102616A - Stove - Google Patents

Description

Dec. 21, 1937. c, EHRET 2,102,616

STOVE Filed May 21, 1935 4 Sheets-Sheet 1 f7 1' 23 29 1 I H! HI llllllllllllllllim Q m Ill Illllllllllllllllll so Mull 8 a W "H E ii J I 45 i I v lllllllll I I 43 INVENTOR. I 1 Heme/12 fhref I 5x I Dec. 21, 1937. C. EHRET 2,102,616

sTbvE I Filed May 21, 1935 4 Sheets-Sheet 2 Jig. 2

IN VENTOR. (/emenf [hr-e2 ATTORNEY.

Dec. 21, 1937. g, EHRET 2,102,616

STOVE Filed May 21, 1955 4 Sheets-Sheet 4 INVENTOR.

C/e/nem Ehref' ATTORNEY.

Patented Dec. 21, 1937 5 UNITED STATES PATENT OFFICE- 19 Claims.

This invention relates to stoves primarily in tended for domestic use in the kitchens of homes, the invention being particularly, though not exclusively, directed to stoves utilizing gas, elec- 5 tricity or oil as fuel.

The primary object of the present invention is to improve upon stoves heretofore used to the end that they maybe more convenient and satisfactory in the carrying out of their intended l purposes and to the further end that'they may more fully meetgpresent day requirements of con venience, ease in cooking and safety in operation. In my copending Patents Nos. 2,001,713 and 2,001,714, I have set forth various improvements 15 and novel features in stove construction and the present invention serves to carry this advance ment forward into further fields of improvement; The present invention is directed to a stove of rotatable character, i. e., a stove wherein at least the top portion thereof on which the pots are supported over burners is rotatable, so that the housewifeor cook, working at the stove, need not reach over an operating burner to inspect or I remove a pot on the back portion of the stove gr, with-consequent danger of receiving a burn or catching fire from an adjacent burner. In conjunction with a stove of this general character,

'so placed with respect to the stove structure, that a pot resting upon the top of the stove may be replenished with. water without requiring removal of the pot from the stove top and the stove and :5 the-water supply elements are interlocked mechanically .in such manner that the water may be discharged from the faucet only when one of the burners of the stove, with which a pot may be juxtaposed, islnfallnement or in proximity to to the faucet. This, feature thus provides for a water supply for pots on the stove, but at the same time insures alinement of the pots with respect to the faucet, so that water may not be inadvertently discharged directly on to the top 45 of the stove between, burners. While the discharge of water on the top of the stove might be serious when coal or gas is used as fuel, considerably more danger might wellaccompany the discharge of water on to an energized electric heating element. 1

A supplemental feature ofthe invention in this connection resides in the provision of a dual control for the water supply, one control being depending upon juxtaposition of the burner and the 55 faucet, and the second control being of a manual oven, but so arranged as to illuminate the intenature and being independent of the faucet, per se, or dependent upon movement of the faucet, as will hereinafter be more fully described.

A further feature of the water supply mechanism consists inthe employment of a toggle ar- 5 rangement associated with the faucet and which serves to enable raising and lowering of the stove top and corresponding adjustment of the faucet to appropriate-heights.

Considerable research in connection with the problems of oven cooking, has disclosed that many accidents occur through the inability of cooks and housewives to properly see roasts, broils, etc., within the oven, it being the practice, when inspection is desired, to partially withdraw the food from the oven to permit of such inspection. This operation not infrequently results in spilling of hot fat upon the cook, burning of the hands, or dropping of the roasting pan or broiling grill upon the floor. It is manifest that, if proper inspection of the cooking food might be carried out without partially removing it from the oven, many of these dangers would be eliminated. To this end, the present invention provides that the oven or ovens have inspection windows which may be mounted in the doors or independently thereof, and there is used in conjunction with these inspection openings one or more sources of illumination preferably positioned exteriorly of the rior ofthe oven when it is desired to carry out the inspection of the cooking foods therein without necessitating the opening of the oven door wlth'consequent loss of heat and without subjecting the operator to the danger of injury. In conjunction with these inspection devices, the stove of the present invention embodies appropriate means for precluding such fogging of the inspection windows as would preclude proper visibility.

A further advance embodying theprese'nt invention consists of the employment of a novel arrangement and novel means whereby the stove body may be mounted for rotation, either in conjunction with an appropriate base or substantially upon the floor, together with or independently of novel mechanism for raising and lowering the stove body, so thatthe stove may be made convenient for either tall or short persons. The present invention embodies other and additional features, which will be hereinafter more fully pointed out, in the annexed detailed description, shown in the accompanying drawings and set forth in the appended claims.

The accompanying drawings illustrate different 5 as illustrative, only, and not as defining the limits side walls l2 and is provided exteriorly v 1.1 said of the invention.

Figure 1 is a side elevation of a stove embodying the present invention.

Figure 2 is a vertical section through the stove of Figure 1, this section being taken on the broken line 2-2 of Figure 3.

Figure 3 is a plan view of the stove top of Figures 1 and 2.

Figure 4 is a detailed central section of an oven door of the kind shown in the preceding Figure 5 shows a structure similar to that shown in the preceding figures, but with certain modifications in the water supply system.

Figure 6 is a section on the line 6-6 of Fig.- ure 5.

Referring first to Figs. 1-4, I designates a suitable hollow standard, shown as comprisinga relatively broad base 2 surmounted by an upstanding cylindrical portion3. The upper end of the cylinder 3 is open and projecting thereinto is a hollow plunger 4 mounted within the cylinder 3 for rotation and vertical adjustment. This vertical adjustment may be accomplished in various ways and by means of various types of mechanism, but, in these figures, the plunger 4 is threaded, as shown at 5, and cooperating with these threads is a hand wheel 6 having a threaded hub 'I screwed on to the plunger 4. In theunder side of the hub 1 is formed a ball race and in the upper end of the cylinder wall is formed a complementary ball race and anti-friction bearings 8 are housed within these complementary ball races, so as to permit either rotation of the hand wheel 6 for the purpose of raising and lowering the plunger with respect to the standard when said plunger is held against rotation.

It will be noted, however, that the friction between the hub and the cylinder because of the anti-friction means interposed between these two parts, is less than the friction between the hub and the plunger 4 and consequently normal rotation of the plunger may be accomplished without tending to change the vertical adjustment thereof, although, when the plunger is held against rotation, rotation of the hand wheel will efiect such vertical adjustment without the application of undue .power thereto. The upper end of the plunger is flanged at 9 and this flange is secured in any suitable way to the under side of the stove body'which is indicated generally by the reference character l0. Thedetails of cons'truction of the stove body may be of course varied within wide limitsdepending upon the type of fuel used and also upon the views of different stove designers and the present invention is to be understood as not limited to these details other than ashereinafter specifically pointed out as important to this invention.

As shown, the stove. bodycomprises an outer bottom ll, outer side walls l2, shown as cylindri-' cal, and an outer upper oven wall l3. Spaced from thesewalls are inner oven walls comprising a bottom l4, side walls l5 and an upper side wall IS. The inside walls are spaced from the outside walls as'is common in oven construction.

A gas burner I1 is shown mounted beneath the inner bottom wall. l4 and-is supplied with gas through a valve IS. The valve stem of this valve extends in opposite directions through the out- 2| which act as guides therefor.

contact with the pots...

outlet ports l9 which form' part of the present invention. These outlet ports are for the exit of heat and products of combustion to the flue and to provide for the carrying off of these gases, this invention includes a hollow manifold 20 positioned exteriorly of the outer wall l2 and embracing the same, being confined between flanges The mounting of this manifold 20, however, is such as to permit of relative rotation between the manifold and the stove body and flanges 2|, so that the manifold may remain stationary, while the stove body rotates. One side of the manifold has a discharge outlet 22 connected with a flue or flue pipe 23 through a flexible connection 24 which has suflicient body to hold the manifold against appreciable rotation, but will nevertheless permit of raising and lowering of the stove body without destroying the connection between the manifold and the flue. The connection 24 is shown rather short in the drawings, but it may bemade sufllciently long to allow of very considerable raising and lowering movement and the manifold may be anchored against actual rotation, but for vertical movement with respect to the water' pipe or other relatively stationary part.

The outer sidewall l2 extends up beyond the outer top l3 for a suflicient distance to accommodate the burners 25 and supports above said burners a stove top 26which may be in the form of aplate having any number of pot holes therein or may constitute a spider or may be of any other suitable construction. As shown this plate is in the form of sheet metal or a flat casting having therein four holes 21, positioned immediately above four burners 25 and over each of these holes a cooking pot is adapted to be received. It will be noted, however, that at the outer periphery of the top 26, there is provided an upstanding wall or border 28, characteristic of this invention and intended to preclude inadvertent dislodgment of pots or pans on the stove top, to keep drafts from blowing out the burners and to keep the heat in Gas is fed to the several burners 25 through manually operable cocks 29 connected with a tubular ring 30 exteriorly of the stove body, as shown, and serving, in effect, as a hand wheel which may be conveniently grasped to rotate the stove body. This ring is supplied with gas through a pipe 3|, forming a branch of a pipe 32 which feeds the valve ll and which is arranged coaxially of the plunger and within the latter. This pipe 32 depends within the interior of the plunger and is connected to a main fuel supply pipe 33 by any suitable connection which will preclude the leakage of gas, but which will permit of rotation of the stove body and raising and lowering of the .latter. An'ordinary hose connection of a flexible character will suflice for this purpose, but,

for illustrative purposes, the pipe 311s shown as extending into the pipe 32, with an associated packing gland or stuiling box 24' to preclude leakage. This arrangement permits of rotation and change in elevation of the stove body without interfering with the supply of fuel. The same general arrangement may be used to. supply 11, if

the stove is an oil burner and it will of course be tion until the faucet is manually manipulated understood that, in an electric stove, suitable wiring connections and heating elements ill take the place of these gas connections and the rners. In Figures 1 and 2, 35 designates a water supply pipe to supply a valve 36 within the base 2 and from this valve, a pipe 31 extends to a toggle and oifset connection above the top of the stove body. The upstanding portion of the pipe 31 may .6

be provided with any number of doors 48, but I be stabilized or anchored in any suitable way, but, as shown, this is accomplished by a bracket 38 clamped about the standard and about the pipe 31. Incorporated in the pipe 31 immediately above the bracket 38- is a valve 39. Both the valves 36 and 39 are of the normally closed type. They may be of any suitable make, wherein the valve is normally closed, but may be opened .or unsealed by pressure applied to the valve stem. The valve stem 40 of the valve 30 is so positioned as to project into the path of a series of cams 4| which cams are mounted or formed on the exterior of the stove body III in such positions as to engage with the valve stem 40 and open the valve 39 when any one of the four-openings 21 of the stove top is juxtaposed to the faucet 42 which is fed with water through said valve 39.'

Mere rotation of the stove body into this position, however, will not supply water to the faucet 42 for the valve 36 remains closed. To supply water, the valve 36 must be opened through depression of its valve stem 43. This may be accomplished in various ways manually, but for the purpose of illustration, I have shown. a treadle 44 overlying the upper end of the valve stem 43 and pivoted at 45. This treadle may be normally elevated by the spring in the valve or may have an independent spring, but any convenient foot pressure n the treadle will depress the valve stem 43 and supply water to the faucet 42 in the event that the faucet is juxtaposed with one of the burners.

By this interlocking of the'parts, it will be apparent that in order to feed water to the faucet a burner must not only be in proper position, but the treadle must be manually operated. As pots are set on a stove only over the burners, it there-' fore follows that when the water is turned on to discharge into a pot the parts will be in proper relative relation.

The faucet arrangement may vary from that shown in Figs. 1 and 2, as hereinafter apparent, but, as shown, in these figures, the faucet 42 is connected to the upper end of the pipe 31 by aninterposed pipe link 46. This pipe link cooperates with the faucet 42 after the manner of a toggle and through appropriate pivotal connections with the faucet and with the pipe 31, so that toggle parts 4246-may be manipulated to best suit the height of the individual pot into which water is to be discharged, the discharge taking place when the pot is in proper position and the treadle operated manually.

The water supply in the structure of Fig.

varies somewhat from that shown in Figs. 1 and 2, in that the treadle control with the associated valve 36 is omitted in Fig. 5 and in lieu thereof thefaucet 42 is connected directly with the upper end of the pipe 31 through a valve.

The valve may be an ordinary one way plug valve,

f'ftion to shut off the valve and hold it in this posidescribed.

Any and all of the several embodiments of this invention may be provided with means to permit the inspection of foods in the oven and without opening the oven door. The oven or ovensmay resisting character, so as tov serve as an lnspection window and at the same time be well able to withstand the heat of the oven. moreover provided on its interior with a wiper 5| faced with steel wool, asbestos felt or other heat resisting material 52 bearing against the inner face of the glass window 50 and mounted upon an arm 53 connected to the spindle of a handle 54 on the exterior of the door, so. that through manipulation of this handle, fog, grease-or the like may be wiped from the interior of the window to render the same transparent. I

Positioned between the doors and preferably on opposite sides of the stove body isappropr'iate illuminating means shown as embodying hinged housings 55. Each housing is positioned adjacent a port in the walls of the oven and the inner side of each port is closed by a transparent or translucent window 56 of appropriate material to stand the heat of the oven, such, for example, as pyrex glass. In each housing is mounted a lamp socket 51 adapted to receive an incandescent lamp 58, electric current to which is supplied through wires housed within 'conduits 59. These conduits lead to the interior of the hollow plunger 4 and additional conduits 60 lead to push'buttons 6|, one of which is positioned adjacent each oven door. The'wiring connections are indicated diagrammatically in Figure 2, the wires 62 and 63 which feed this system being connected to brushes 64 and 65, respectively, mounted upon a ring of insulation 66 fixed on the interior of the plunger 4. An insulating disk 61 is supported on the lower end of the pipe 32 held loosely between collars 68 and 69 screwed on to said pipe,,so that the insulating disk 61 is free to rotate but is raised and lowered with the stove body. The outer periphery of this disk 61 has one or'more projections which extend into vertical keyways 14 in the cylinder wall, so that while the disk is free to raise and lower with the stove body, it is kept from rotating by the keyways 14.

- On this insulating disk 61 is mounted two com- Each vdoor is mutator rings 10 and 1| with which the brushes 64 and respectively contact at all times and these commutator rings are fed by wires 12 which form parts of a feed cable 13 looped within the hollow base to permit of raising and lowering movement of the stove body while permitting uninterrupted feed. of current to the wires 62 and 63.

When a person desires to inspect the contents of the oven, one of the push buttons 6| may be pressed to energize the stove lamps 58 and illuminate the entire interior of the oven and if the window 50 be clouded, the wiper may be operated to permit of clear vision. These operations may a danger to the operator. The sources of illuminam be Placed otherwise than specified, but the showing of the drawings is not only convenicut, but thoroughly efllcient. The advantage of placing the lamps 58 in housings hinged to the stove body is that these housings may be open at any time for replacement of lamps, and while, the lamps are thus positioned to properly illuminate the interior of the oven, they are removed from the direct heat of the latter; If desired, the housings 55 may be ventilated by perforations or holes, although this is not essential and the panels 56 may also be equipped with wipers similar to those on the doors.

The foregoing detailed description sets forth various toms of the present invention, as illustrative, but it is to be understood that the invention is not restricted to details of construction v which may be modified within the scope of the appended claims. Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:

1. A stove comprising a stove body mounted for rotation and having a plurality of fuel burners, a watersupply duct having a water outlet positioned to deliver water into receptacles associated .valve when one of the burners is juxtaposed with the water outlet.

3. A stove comprising a stove body mounted for rotation and having a plurality of fuel burners, a

water supply duct having a water outlet positioned to deliver water into receptacles associated with the burners, a valve for controlling the flow of water through said duct, and valve operating devices movable with the stove body to open said valve when one of the burners is juxtaposed with the water outlet, and an additional manually operable valve included in the duct to control the .flow of water through the duct when the other valve is open. I

' 4. A stove comprising a stove body mounted to rotate and adapted to support pots for cooking, a water supply duct having an outlet positioned to discharge water into pots thus supported, a controlling valve in said duct, and means rotatable with the stove body to control the opening and closing of the valve in accordance with the angular position of the stove body. 5. A stove comprising a body mounted to rotate and adapted to support cooking pots, a water supply duct having an outlet positioned to discharge water into a pot thus supported, a normally closed valve in said duct, and means rotatable with the stove body to engage with and open the valve when the stove body is in predetermined angular positions of its rotary movement.

6. A stove comprising a body mounted to rotate and adapted to support cooln'ng pots, a water supply duct having an outlet positioned to discharge water into a pot thus supported, a normally closed valve in said duct, and means rotatable .with the stove body to engage with and open the valve when the stove body is in predetermined angular positions of its rotary movement, and an additional manually operable valve in said duct to permit the flow of water through the duct when the other valve is opened. s 7. A stove comprising a body mounted to rotate and adapted to support cooking pots, a water supply duct having an outlet positioned to discharge water into a pot thus supported, a normally closed valve in said duct, means rotatable with the stove 10 body to engage with and open the valve when the stove body is in predetermined angular positions of its rotary movement, an additional manually operable valve in said duct to permit the flow of water through the duct when the other valve is opened, the water'outlet of the duct being, pivotally mounted with respect to the'remainder of the duct and the manually operable valve being oper-' atively connected to and operated by the pivotal movement of said water outlet. 8. A stove comprising a stove body mounted to rotate and adapted to support pots for cooking, a water supply duct having an outlet positioned to discharge water from the duct into a pot thus supported, an automatic valve included insaid duct, means rotatable with thestove body to operate said valve, and a manually operable valve also included in said duct.

9. A stovecomprlsing a stove body mounted to rotate and adapted to support pots for cooking, a water supply duct having an outlet positioned to discharge water from the duct into a pot thus supported. an automatic valve included in said duct, means rotatable with the stove body to operate said valve, a manually operable valve also included in said duct, and a manually operable treadle for controlling the latter valve.

10. A stove comprising a base, a stove body mounted forrotation on the base and adapted to support a cooking vessel, 9. water duct supported by the base and having an outlet positioned to discharge the water into such cooking 'vessel, and valvular means controlled by the stove body to limit the supply of water to the outlet to predetermined angular positions of rotary movement of the stove body.

11. A stove comprising a base, a stove body mounted on-the' base for rotation .and vertical adjustment with respect to the latter, said stove body being adapted to support a pot for cooking, a water supply duct provided with a vertically extensible outlet to discharge water into a juxtaposed pot supported on the stove body, a valve in said duct, and means rotatable with'the stove body to open said valve when said stove body is in a predetermined angular position of its rotation.

12. A stove comprising a stove body, means for supporting the stove body for independent vertical and rotatable adjustment, a water supply duct provided with a vertically extensible outlet positioned to discharge water into a cooking pot supported in juxtaposed. relation on the stove body, a valve in said duct, and means, rotatable with the stove body, to open said valve when the stove body is in apredetermined arigular position oi its rotation.

13. A stove comprising a stove body mounted for independent vertical and rotatable adjust-J ment, a water supply duct provided with a water outlet positioned to discharge water into a cooking pot supported on the stove body, a valve in said duct, and valve operating means, controlled by the position of the stove body, to open the valve when the stove body is in predetermined, angular positions of its rotation.

14. A stove comprising a stove body mounted to rotate and adapted to support pots for cocking, a water supply duct having an outlet positioned to discharge water into pots thus supported, a valve in said duct, and valve operating means, controlled by the position of the stove body, to control the opening and closing of the valve in accordance with the angular position of the stove body.

15. A stove comprising a stove body mounted for independent vertical and rotatable adjustment and adapted to support pots for cooking, a water supply duct having an outlet positioned to discharge water into pots thus supported, a valve in said duct, and valve operating means, controlled by the position of the stove body, to control the opening and closing of the valve in accordance with the angular position oi the stove body.

16. A stove comprising a vertically adjustable stove body mounted to rotate and adapted to support pots for cooking, a water supply duct having an outlet positioned to discharge water into pots thus supported, a valve in said duct, and valve operating means, controlled by the position oi the stove body, to control the opening and closing of the valve in accordance with the angular position of the stove body, said water supply duct being vertically extensible to compensate for vertical adjustment of the stove body.

1'2. A stove comprising a stove body mounted for vertical movement and adapted to support a coomng Vessel, and a water supply duct having an outlet positioned to discharge water into a ,vessel thus supported, said water supp duct being vertically extensible to compensate for vertical movement of the stove body.

18. A stove comprising a stove body mounted for rotation and adapted to support a cooking vessel, a water supply duct in proximity .to the stove body and having an outlet section to deliver water into a vessel thus supported, said outlet section having an adjustable connection with the remainder of the supply duct, a valve included in said adjustable connection and arranged to open when said outlet section is positioned to discharge water into such vessel, and means for normally retracting said outlet section and closing the valve.

19. A stove comprising a stove body mounted for rotation and adapted to support a cooking vessel, a water supply duct in proximity to the stove body and having an outlet section to deliver water into a vessel thus supported, said outlet section having an adjustable connection with the remainder of the supply duct, a valve included in said adjustable connection and arranged to open when said outlet section is positioned to discharge water into such vessel, means for normally retracting said outlet section and closing the valve, an additional valve in said duct, and means, controlled by the stove body, for opening the latter valve when the stove body is in predetermined angular positions of its rotation.

CLEMENT EHRET.

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