US2313089A - Oil range - Google Patents

Description

H. M. REEVES March 9, 1943.

I OIL RANGE Filed Sept. 6, 1938 3 Sheets-Sheet 1 March 9, 1943. H. M. REEvEs 2,313,089

' v OIL RANGE Filed Sept. 6, 193a 3 SheetE-Sheet 2 March 9, 1943. H. M. Reeves OIL RANGE Filed Sept. 6,

'1938 3 Sheets-Sheet 3 Patented Mar. 9, 1943 UN! s fi D STTES 1 T FFHCE OIL RANGE Herbert Reeves,'Kankakee, IlL, assignor to Florence Stove Company, Gardner, Mass, a corporation of Massachusetts Application September 6, 1938,Serial No. 228,551

13 Claims. (01. mks-i5) wickless burners heretofore in use, burning kerosene or other liquid, it has been necessary to reach in from a side below the top, raise the flame cylinders from the burner bowl to render the wick or lighting ring accessible, apply a match to the same, and then lower the cylinders and slidably adjust thein to seat properly upon the bowl soas to prevent air leakage at the seat. Due to the di-fiiculty of access to, as well as the danger of burning the hand in any attempt to ignite burners placed in a row back of the front burners, it has been standard practice to provide such stoves with merely a single burner or only one row of burners.

It is an object of the present-invention to provide a range of the character referred 'to having two or more rows of burners constructed and arranged so that each burner, regardless of its location, may be conveniently ignited without danger.

Another object is to provide a burner construction which may be ignited with greater convenience and safety than has been possible with past constructions. V

A further object is to provide a plurality of rows of liquid fuel burners mounted on the same support.

Another object is to provide a burner support with means for adjusting the same to maintain the proper level of fuel in the burner or burners.

It is another object to provide a burner construc'tion which does not require accurate seating of a flame cylinder on the burner bowl.

A further object is to provide a liquid fuel stove construction in which the usual burner chimney is eliminated.

It is also an object of the invention to provide an improved seal for preventing air from passing between the interiors of the combustion tubes adjacent the bowl.

It is also an object to provide means for leveling the burners irrespective of the floor level.

Another object is to guard the burners from spilled liquid.

A further object is to shield the valve means from the radiant heat of the burner means.

It is also an object to provide a common support for the burners and -float valve to insure maintenance of the proper liquid fuel level.

It is a further object to provide improved oven burner construction and a control therefor.-

Further objects and. advantages of the invention will appear-as the description proceeds.

The invention will be understood upon reference to the accompanying three sheets of drawings, in'which Fig. 1 is a front elevation of a-range constructed in accordance with one form of the invention;

Fig. 2 is a plan view of the structure appearing in Fig. 1; v

Fig. 3 is a plan view of the cook top of Figs. 1 and 2, with the grids omitted;

Fig. 4 is an enlarged fragmentary sectional view taken as indicated by the line 4"4 in Figs. 1 and 5';

Fig; 5 is -a sectional plan view taken as indicated by the-line'5-5-i-n Fig. '4;

Fig. '6 is an enlarged fragmentary sectional view taken as indicated by the line 66 in Fig. 2;

Fig. 'l is-a View sim'il'ar'to Fig. 6 but showing how the burner is ignited;

Fig. 8 is an enlarged fragmentary sectional View showing how each burner bowl is fed Fig. 9 is a fragmentary section-elevation of a manual control for the fuel feed;

Fig. 10 is a similar View but of thermostatic control;

Fig. 11 is-a fragmentary plan view'of the working end of a toolfor elevating the lighting ring to a position accessible to aname.

Referring now more particularly to the drawin'g's, there is shown a casing 15 mounted on legs it, which may be adjustable if desired, and having a cooking burner compartment [1. Mounted within the compartment 11 are brackets 18 (Figs. 5, 6 and '7) having inwardly ex tending arms Hi through which extend upwardly screws 29 for engagement with the webs 2| of channel members 22 on which rest burner bowls 24. For illustrative purposes, I have shown two sets of burner bowls and associated burner 'construction, but it will be appreciated that the invention applies to one or any number of the same, as will be apparent to any one skilled in the art.

In the illustrated form of the invention, two burners are supported on each of two channels 22 and these channelsare joined at their ends by angle bars 2 5 and intermediately by a channel bar 2! which has an extension 28 on which a float valve 29 is mounted. Each 'bar'26 has slots 33 through which screws 3 extend into the bracket N3, the slots being provided for the purpose of adjustment, as will appear. The frame with burners and float valve mounted thereon is lowered ontothe bracket arms l9',vthe-screws 34 passed through the slots 33 and threaded into the brackets 16, the screws 29 turned until they level the burner bowls and float valve to the extent desired, and then the screws 24 may be tightened. Thus, by means of the screws 29 and 34, each end of each channel 22 may be adjusted vertically, and in this manner all of the burner bowls and the float valve may be leveled to maintain the liquid at the proper height in the bowls, notwithstanding uneven supporting terrain or flooring.

The frame unit obviously may be formed of elements other than channels and angles. The frame construction leaves ample clearance for circulation of air.

Each bowl 24 and bar 22 has an opening through which a sleeve 35 extends, said sleeve having a collar 36 or other projection abutting the top 31 of the bowl, and a nut 38 cooperating with the sleeve and the bar serves to clamp the bowl securely over the bar. The screws 29 are readily accessible when the door 39 is open or the cookingtop panel '49 i removed, and the screws 34 are readily accessible when said panel is removed. Welded, brazed or otherwise suitably secured to an outer ledge 4| on the bowl is an outer perforated flame or combustion tube 42.

An inner perforated combustion or flame tube 43 carries perforated centering discs 44, and the top 45 of the inner tube has an opening through which the threaded upper end 46 of a rod 41 extends, the rod having a collar 48 or other suitable projection and receiving a nut 49 which clamps the rod in place. The rod 41 passes downwardly through openings in the centering discs 44, and said openings are of such size as to have a substantially sliding fit with the exterior of the sleeve 35, the rod 41 being at all times engaged within the tube 35, so as to insure the centering of the inner tube 43 relative to the outer tube 42.

The lower end of the inner tube 43 is joined to an inwardly extended flange 55 of a lighting ring carrier 56 supporting an asbestos or other suitable lighting ring 51 and formed to extend adjacent the bottom of the bowl 24. The carrier 56 has in its bottom a series of holes 59'formed to admit liquid fuel 6| from the bowl to the interior of the carrier 56 so that the ring 51 may at all times be immersed in the liquid when the carrier is seated and in the bowl.

The flange 55 of the carrier is formed to rest on the inner ledge 63 of the bowl 24, and it will be observed that when the inner tube and associated ring carrier are seated on the ledge 63, as shown in Fig. 6, the liquid 6| forms a seal preventing air from entering the outer combustion tube 42 from the inner tube 43. Thus it is not necessary to slide the inner tube circumferentially on the ledge 63 in order to obtain the desired seala procedure which is necessary in constructions heretofore in use. Wherever the inner tube is brought to rest on the ledge 63, the seal is effective.

In past constructions, the burner has been provided with an additional cylinder passing about the outer tube to serve as a chimney. Such constructions have employed handles on the chimneys so that they might be raised by hand to render the wick or the lighting ring, as the case may be, accessible to the flame of a match held by the operator, and consequently the range construction afforded an opening at the front of the burner or burners to render the handles accessible. With the present construction, thewall 64 about the burner or burners is completely closed, and remains so, so that the burner casing itself performs the function of a chimney for all of the burners.

Further in accordance with the present invention, the range affords a top ledge 65 for supporting the cooking top panel 46 having holes 66 to promote circulation and keep the cooking burner valves and float valve cool and a downwardly depressed drip trough 67 over each burner. Each trough comprises a gutter 68 and is turned upward inwardly at 69 and has a central opening 70 of such size as to allow the carrier 56 to pass easily therethrough as shown in Fig.

7. Each trough 61 has one or more holes 12 in the gutter thereof so as to allow the liquid spilled from above to drip rather than flow down between the burners, the tongues 13 serving to guide the drops away from the associated burners. This construction guards against the mixing of the spilled liquid with the fuel and the flame and spreads out each drop, the liquid discharging from the edges of the tongues. Suitable cooking grids 15 may be removably mounted in association with the drip troughs.

Removably disposed on suitable shelves 89 at the sides of the casing is a drip pan 8| which may be conveniently reached when the door 39 is opened, the pan being readily slipped in place to receive the drippings from the holes 72. It will be observed that said holes are so located that the drip pan need not be of excessive area. When it is desired to ignite the lighting ring 51, the attendant employes a tool (Figs. 7 and 11) having a forked end 86 formed to receive the neck 81 of the nut 49. Then when the tool 65 is raised, it carries with it the inner flame tube 43, the lighting ring carrier 56, the lighting ring 51 and the centering rod 41, and, as is evident from Fig. '7, this assembly may be raised to any extent desired. In practice, it will be raised substantially to the extent shown in Fig. '7, bringing the ring 51 within easy access of a flame 9|, yet leaving a portion of the rod 41 in the sleeve 35 to guide the assembly in its descent after the ring 5'! is ignited. The ring 51, having previously been immersed in the liquid fuel 6|, will be sufficiently soaked with the same to readily ignite when the flame is applied.

When the ring 51 is ignited, the tool 85 is lowered to allow the elevated assembly to descend gradually until the lighting ring carrier 56 rests in the bowl 24, whereupon the tool 85 is Withdrawn and the burner is in operation. By employing this means of rendering the burner accessible for ignition, it is obvious that it is just as easy. to ignite a back burner as a front burner, so that there is no limitation to the number of rows of burners that may be employed. It will be noted further that since the range. casing affords a complete enclosure for all of the burners, said enclosure serves as a common chimney for all of the burners, thereby eliminating the individual chimneys of past burner constructions. Any suitable fuel source such as a gravity tank may be employed. It is preferably arranged at the back of a rear guard 96 and is connected by suitable, preferably flexible, tubing 91 to the float valve 29. Preferably flexible tubing 99 establishes communication between the float valve 29 and a manifold )9 which communicates with valves I92 mounted on a bracket I03 of the casing, each valve being controlled by a handle I94 extending forwardly through the casing and each valve communicating with preferably the bottom of the corresponding burner bowl 24 by preferably flexible tubing I66 (Fig. 4).

asraoao The flexible tubing. permits. the variousl burner bowls24; andthe float valve..29 to be adjusted: relative: to the relatively fixed. tank. 95,. manifold I01! and valves I02. The. tank maybe provided with a suitable inlet as at I? and contents-gage astat I08.

Baflies H9 and III are suitably mounted. to shield the float valve 29. and the. fuelv in the manifold um and valves I02 from the radiant heat of the burners, and toprovide for circulation of cool air about the shielded parts.

A preferably flexible tube I-I5 affords com munication between the tank 95 and a. second float valve IIB from which a flexible tube II'I leads to a valve H8 which may be controlled automatically, as by thermostatic means, or mechanically, by means of a handle I20 which may be conveniently mounted as on the guard 96. The valve IIB controls the flow from the float valve H6 to an oven burner bowl I22, the

connection from the valve to the bowl being established preferably by a flexible tube I24. The float valve I I6 is preferably fixed and the burner bowl I22 mounted on a framework I25 having adjusting means I25, which may be similar to the adjustment means aforesaid, for adjusting the bowl I22 to maintain the liquid therein at the proper level. The flexibility of the tubing makes this adjustment possible.

The oven burner is of enlarged form to perform the work of the usual plurality of oven burners, and lends itself more readily to control.

In using a construction for the manual control of the valve I I8, there may be provided miter gearing I39 (Fig. 19) so as to transmitrotation from the handle I20 to the rod IN. The rod i3! is rotatable in a relatively fixed sleeve I32 in which is threaded a valve stem I33 (Fig. 9) having a slot I34 in which a key I35 of the rod I3I is received, whereby rotation of the rod I3I causes rotation and longitudinal movement of the stem I33. Obviously, any suitable coupling affording relative longitudinal movement between the rod I3! and stem I33 may be employed. A suitable dial I31 may be associated with the handle I29, which may have a pointer or suitable marking to inform the userv as to the degree of adjustment of the valve.

If it is desired to operate the valve thermostatically, for example, an arrangement such as that shown in Fig. may be found suitable. in accordance with this construction, there is provided a thermometer tube HID which maybe placed at a suitable point in the oven, the thermometric fluid being operatively associated with a bellows MI to cause the latter to expand and contract in accordance with the rise and drop of the temperature of the air in the oven. The bellows is pivotally connected at I42 to a lever I 13 pivotally mounted at I44. A valve stem H55 has within the valve casing II8 a collar or other suitable abutment ME against which a spring I4! acts to constantly urge the stem to valve-opening position, the upper end of. the stem-being engaged with the bottom of the free end I58 of the lever I43. A limit rod I50 threaded in. the sleeve I32 and non-rotatably coupled with the actuating rod I3I is controlled by the handle I28 in such a manner as to limit the extent to which the. lever end Mil may rise, thereby limiting the extent to which the valve may be opened, and accordingly limiting the flow of fuel to the oven burner. Thus the handle I20 may be set for any predetermined temperature above which it is desired the oven tem perature shall not rise, and the. thermostatic means; may operate to gradually increase the,v flow of fuel to. the burner until that temperature limit is reached, beyond which the valve. will not be permitted to increase the flowto the burner.

Various other controlmeans may be provided as will be understood by those skilled. in they art.

,The various permanently connected parts may be connected by welding, brazing, or the like, as shown, or in any other suitable manner.

From the foregoing, it is evident. that I have provided, among other things; a liquid fuel stove: employing a plurality of rows of burners as in a majority of present-day gas ranges; providing for easy lighting with an ordinary match of the. rear as well as the front burners; eliminating the need for securing; precise seating of the inner combustion tube on the. burner bowl; providing a unit mounting for the top burners and: associated. float valve for controlling their oil level; providing for simple independent adjustment for leveling the. top burners-;, providi-n a fixed mounting for the top burner valves and manifold so as to permit neat assembly independently of the burners; shielding the top burner valves and associated float valve and promoting circulation around them; providing a cooking top affording a spillage trough with outlets directly above-a drip pan under the burner unit; in which the stove wall affords a common I chimney for all burners, eliminating the need for individual chimneys for the burners; in which a single wide rangeoven burner serves in place of the customary two burners employed in the past on full-size ovenwickless oil ranges; in which the float valve and control mechanism for the. oven burner are located at the rear of the range; in which the oven burner control handle is located on the back guard over the oven; in which a thermostat control is provided for a wicklessoil range oven; and, among other things, in. which means is provided in the burner compartment for leveling the oven burner.

Various changes coming within the spirit of the invention may be suggested by those skilled in the art, and hence'I do not wish to be limited to the specific forms shown or uses mentioned,

except to the extentindicated by the appended claims.

I claim:

1. A liquid fuel stove comprising a support, a burner bowl mounted on said support", means supplying said bowl with liquid fuel, a sleeve extending axially through. said bowl, an inner combustion tube adapted to seat on said bowl and provided with a centering disc having a central hole for guidingly receiving said sleeve, a rod connected to said tube and extending downward in said sleeve, a lighting ring carrier connected to said tube and adapted to project into said bowl when. said tube'is seated on said bowl and having. an opening to admit fuel from said'bowl, a lighting ring in said carrier and adapted to be immersed in the fuel. said stove affording a top opening through whichsaid tube and associated carrier may be raised to render said ring accessible for ignition by a match or other suitable flame, and means for facilitating the raising and lowering of said tube, said rod being telescoped with said sleeve when said ring is in igniting position so as to maintain said tube in substantially coaxial relationto said bowl.

2. A fluid fuel. stove comprising a burner, a

support; therefor, a spillage trough mounted above said burner and provided with a drip opening, and means providing a drip surface extending below said opening and radially outwardly beyond said burner to discharge drippings from the edge of said surface.

3. A fluid fuel stove comprising a burner, a support therefor, a spillage trough mounted above said burner and provided with a drip opening, means providing a flat surface bottoming said opening and extending radially outwardly beyond said burner, and a drip pan supported below said burner and arranged to receive the drippings from said trough.

4. A liquid fuel stove comprising burner means, a float valve therefor, hand operated valve means for said burner means, means affording a fixed mounting for said valve means, means providing an adjustable mounting for said burner means and float valve to maintain liquid fuel in said burner means and float valve at the desired level, and flexible tubing establishing communication between the respective parts so that adjustments may be made without interference from the relatively fixed valve means.

5. A liquid fuel stove comprising a casing, a burner therein, said casing being open'over said burner, said burner comprising a lighting ring carrier, a lighting ring supported by said carrier, said carrier being withdrawable from said casing to such an extent as to render said ring accessible for lighting at the top of the stove, and means for guiding said carrier throughout its movements from operative position to lighting position and back to operative position.

6. A liquid fuel stove comprising a casing, a burner in and remote from the front of said casing, said casing being open over said burner, said burner comprising a carrier, lighting means supported by said carrier, said carrier being withdrawable from said casing to such an extent as to render said means accessible from the top of the stove, and means for guiding said carrier throughout its movements from operative position to lighting position and back to operative position. v

7. A liquid fuel stove comprising a support, a burner bowl mounted on said support, an outer combustion tube connected to said bowl, means supplying said bowl with liquid fuel, an inner combustion tube telescopically associated with said outer tube and adapted to seat on said bowl, a lighting ring carrier connected to said inner tube and adapted to project into said bowl when saidtube is seated on said bowl and having an opening to admit fuel from said bowl, a lighting ring in said carrier and adapted to be immersed in the fuel, saidstove affording a top opening through which said inner tube and associated carrier may be raised to render said ring accessible for ignition by a match or other suitable flame, means for facilitating the raising and lowering of said inner tube, and means associated with said inner tube and operative when said ring is accessible for ignition at said top opening to maintain said inner tube insubstantiallycoaxial relation to said bowl.

8. A liquid fuel stove comprising a support, a burner bowl mounted on said support, means supplying said bowl with liquid fuel, a sleeve extending axially through said bowl, an inner combustion tube adapted to seat on said bowl, a rod connected to said tube and extending downward in said sleeve, a lighting ring carrier connected to said tube and adapted to project into said bowl when said tube is seated on said bowl and having an opening to admit fuel from said bowl,

a lighting ring in said carrier and adapted to be immersed in the fuel, said stove affording a top opening through which said tube and associated carrier may be raised to render said ring accessible for ignition by a match or other suitable flame, and means for facilitating the raising and lowering of said tube, said rod being telescoped with said sleeve when said ring is in igniting position so as to maintain said tube in substantially coaxial relation to said bowl.

9. A liquid fuel stove comprising a support, a burner bowl mounted on said support, an outer combustion tube connected to said bowl, means supplying said bowl with liquid fuel, an inner combustion tube telescopically associated with said outer tube and adapted to seat on said bowl, a lighting ring carrier connected to said inner tube and adapted to project into said bowl when said tube is seated on said bowl and having an opening to admit fuel from said bowl, a lighting ring in said carrier and adapted to be immersed in the fuel, said stove affording a top opening through which said inner tube and associated carrier may be raised to render said ring accessible for ignition by a match or other suitable flame, means for facilitating the raising and lowering of said inner tube, and means independent of said outer tube and operatively associated with said inner tube when said ring is accessible for ignition at said top opening to maintain said inner tube in substantially coaxial relation to said bowl.

10. A liquid fuel stove comprising a casing, and a burner in and remote from the front of said casing, said casing being open over said burner, said burner comprising a carrier, and lighting means supported by said carrier, said carrier being withdrawable from said casing to such an extent as to render said means accessible from the top of the stove, and means for guiding said carrier throughout its movements from operative position to and during lighting position and back to operative position.

11. A liquid fuel stove comprising a support, a burner bowl mounted on said support, an outer combustion tube connected to said bowl, means supplying said bowl with liquid fuel, an inner combustion tube telescopically associated with said outer tube and adapted to seat on said bowl, a lighting ring carrier connected to said inner tube and adapted to project into said bowl when said tube is seated on said bowl, a lighting ring supported by said carrier and adapted .to be immersed in the fuel, said stove affording a top opening through which said inner tube may be raised to render said ring accessible for ignition by a match or other suitable flame, means for facilitating the raising and lowering of said inner tube, and means associated with said inner tube and operative when said ring is accessible for ignition at said top opening to maintain said inner tube in substantially coaxial relation to said bowl.

12. A liquid fuel stove comprising a support, a burner bowl mounted on said support, means supplying said bowl with liquid fuel, a sleeve extending axially through said bowl, an inner combustion tube adapted to seat on said bowl, a rod connected to said tube and extending downward in said sleeve, a lighting ring carrier connected to said tube and adapted to project into said bowl when said tube is seated on said bowl, a lighting ring supported by said carrier and adapted to be immersed in the fuel, said stove affording a top opening through which said tube may be raised to render said ring accessible for ignition by a match or other suitable flame, and means for facilitating the raising and lowering of said tube, said rod being telescoped with said sleeve when said ring is in igniting position so as to maintain said tube in substantially coaxial relation to said bowl.

13. A liquid fuel stove comprising a support, a burner bowl mounted on said support, an outer combustion tube connected to said bowl, means supplying said bowl with liquid fuel, an inner combustion tube telescopically associated with said outer tube and adapted to seat on said bowl, a lighting ring carrier connected to said inner tube and adapted to project into said bowl when said tube is seated on said bowl, a lighting ring supported by said carrier and adapted to be immersed in the fuel, said stove affording a top opening through which said inner tube may be raised to render said ring accessible for ignition by a match or other suitable flame, means for facilitating the raising and lowering of said inner tube, and means independent of said outer tube and operatively associated with said inner tube when said ring is accessible for ignition at said top opening to maintain said inner tube in substantially coaxial relation to said bowl.

HERBERT M. REEVES.

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