US2780216A

US2780216A - Oil burning camp stove

Info

Publication number: US2780216A
Application number: US445840A
Authority: US
Inventors: Beaudoin Jack
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-07-26
Filing date: 1954-07-26
Publication date: 1957-02-05
Anticipated expiration: 1974-02-05

Description

Feb. 5, 1957 J. BEAUDOIN 2,780,216

OIL BURNING CAMP STOVE Filed July 26, 1954 I INVENTOR. FIgO JACK BEA UDO/N United States Patent OIL BURNING CAMP STOVE Jack Beaudoin, Gulliver, Mich.

Application July 26, 1954, Serial No. 445,840

3 Claims. (Cl. 126-93) My invention relates to improvements in heating apparatus and particularly to liquid fuel burning stoves for heating camps, tents, and other structures.

Various field operations and out-of-door sports require a relatively small, reliable and easily ignitable stove or space heater operating on readily available liquid fuel such as oil or kerosene. Such a stove must be easy to clean and maintain and must produce a high heat with a minimum of fuel. At the same time it must be of rugged, yet economical construction.

My invention fulfills all of the foregoing requirements. One of the features of my invention permits the construction of a stove stripped of many conventional controls and assemblies which I have found no longer necessary to safe and efficient operation. A further feature is a single, easily removed and cleaned burner-fuel line assembly as the only part of the stove which requires cleaning. Another feature is a more eflicient, yet simply constructed fuel burner.

The foregoing and other features of my invention will now be described in detail, reference being had to the accompanying drawings in which:

Fig. 1 is an isometric view, partially broken away,

showing a preferred embodiment of my invention;

Fig. 2 is a detailed partial cross-sectional view of the burner-fuel line assembly and the lower portion of the stove shown in Fig. 1; and

Fig. 3 is a side view of a lighter stick for igniting fuel in the burner of the stove.

My invention is capable of many modifications and embodiments. There is shown in the drawings and will generated by the stove. Fuel tank 22 may be aflixed to support 21 by a single bolt 23 for convenient removal. The filling spout of the tank is covered by a cap 25 and the liquid fuel is fed from the tank to a fuel line in regulatable quantities by means of a control valve 26 mounted on the lower portion of tank 22.

Referring now to both Figs. 1 and 2, the burner hereinafter described is positioned within housing 10 by a flanged annular, disc-like support 28 mounted horizontally within the lower portion of the housing. Support 28 has a concentric hole in its center for accommodating the burner. To properly control the fiow of air for combustion to the burner there is mounted within housing 10 and beneath support 28a circular disc-like air control plate 29 provided with a concentric burner hole 29a and a plurality of air holes 2% equally spaced around the now be fully described a preferred embodiment which it should be understood is illustrative of the principles of my invention without limiting the invention to this embodiment. The scope of the invention will be set forth only in the appended claims.

Referring first to Fig. 1, there is shown a stove with an upstanding substantially cylindrical housing 10 made of sheet metal or the like with the central axis of the housing substantially vertical. The housing is provided with a circular top 11 and a flue 12. The flue may have a regulatable damper as of the butterfly type shown. A plurality of legs 14 are aflixed to the bottom of housing 10 and serve to support the entire stove and to permit free circulation of air beneath the stove housing. Preferably the lower portion of the legs contain holes to facilitate rigid mounting of the stove onto a floor or other supporting surface.

A generally rectangular hole in the side of housing 10 is closed by a cover plate 16 which is mounted over the hole with a plurality of self-tapping screws 17. This hole in housing 10 with its easily removable cover plate 16 facilitates simple removal of the burner-fuel line assembly in a manner to be described. A lighter hole is provided in cover plate 16 and the hole can be closed by a pivotable lighter hole cover or door 18 mounted on plate 16 by a rivet 19. A small flange 18a may be 10- central burner hole.

An integral burner-fuel line assembly 30 comprises a burner 32, a fuel line 33, and a fuel line nut 34. Burner 32 is preferably pie plate shaped with a flanged upper lip 32a which in its assembled position within the stove rests on the upper surface of support 28. The truncated conical side portion 32b of the burner makes an included obtuse angle of substantially with the flat horizontal bottom of the burner. The side portion of the burner contains a plurality of holes 320 formed preferably in three rows with the bottom row spaced somewhat above the bottom of the burner. burner is adapted to contain a quantity of liquid fuel.

Fuel line 33 is joined to control valve 26, which is threaded, by means of fuel line nut 34. The outlet end of the fuel line terminates concentrically within burner 32 with the upper end of the fuel line lying slightly above the bottom of the burner, but below the lowermost row of holes 32c as shown in Fig. 2. The fuel line is rigidly aflixed to the burner to form an integral assembly.

In Fig. 3 there is shown a lighter stick 36 for conveniently igniting the fuel in the burner. Lighter stick 36 is preferably made of heavy gauge wire to one end of which is fastened a wad 37 made of a porous, non-combustible material such as shredded asbestos.

To operate my camp stove, fuel tank 22 is first filled with liquid fuel and control valve 26 is opened to permit fuel to flow through fuel line 33 into the lower portion of burner 32. Lighter stick wad 37 is saturated with fuel, as by dipping the lighter stick into the fuel tank through its filling spout, and ignited. The door 18 is then opened and the burning end of the lighter stick thrust into the fuel contained in burner 32. As soon as the fuel in the burner is ignited the lighter stick may be withdrawn and extinguished. Door 18 is then closed so as not to interfere with proper airflow and combustion within the stove.

As soon as the fuel in burner 32 is ignited air will be drawn from the atmosphere beneath the housing, through the holes 29b in air control plate 29 and up through the holes in the side of burner 32. Thus air will be drawn up and over the burning fuel as shown by the broken arrows in Fig. 2 to provide a full supply of oxygen for complete combustion of the fuel. The heat to be obtained from the stove can be simply governed by controlling the amount of fuel flowing through control valve 26 to the burner. While for normal operation sufiicient fuel would be fed to keep the entire bottom of the burner covered to below the level of the upper end of fuel line 33, it is possible by restricting fuel flow to maintain only The lower portion of the fuel line itself.

No liquid fuel burning stove can operate without the production of a certain amount of free carbon, some of,

which tends to adhere to and foul up the stove and particularly the burner. For this reason the burner must from time to time be cleaned. Also, impurities in the liquid fuel sometimes make cleaning of the fuel line necessary. Since the burner and fuel line of my stove constitute an integral assembly they can be removed for cleaning in a single operation.

This may be accomplished by first removing screws 17 and cover plate 16 and unscrewing fuel line nut 34 from control valve 26. The burner-fuel line assembly 30 can then be easily lifted up from support 28 and taken out of the stove housing through the hole in the side of the housing normally covered by plate 16. Upon their removal both the burner and fuel line can be cleaned readily and I have found this to be the only cleaning necessary to keep my stove in proper operating condition. Upon reiusertion of assembly 30 into the stove housing, fastening the fuel line nut and reinstalling the cover plate, the stove is again ready for operation.

I claim:

1. A liquid fuel burning stove comprising an upstanding housing, a plurality of spaced apart legs affixed to the lower end of said housing for supporting said housing and for providing free air circulation beneath said housing, an open-centered annular support permanently mounted within the lower portion of said housing, a liquid fuel tank mounted on the side of said housing, a valve mounted on said fuel tank for controlling the flow of liquid fuel from said tank, an integral burner assembly consisting of (l) a lipped burner with a bottom portion and a substantially truncated conical side portion having therein a plurality of air holes and (2) a single-piece fuel line removably connected to said fuel tank valve and running therefrom to the bottom portion of said burner, an air control plate having therein a plurality of air holes and mounted over the lower end of said housing beneath said annular support and said burner, said air control plate also having therein a central opening for said fuel line running from said fuel tank valve to said burner within said housing, said central opening being sufiiciently large to permit the unobstructed withdrawal therethrough of thatportion of the fuel line lying outside of said housing, and a door in said housing positioned above said burner and said annular support, the opening of said door being sufficiently large to permit the removal therethrough of said integral burner assembly, said burner assembly being connected to said stove only by the lip of -2- said burner resting on said annular support thereby to facilitate the easy removal of said burner assembly from said stove through said door opening, the air holes in said air control plate and in said burner constituting the only means for supplying air for the burning of liquid fuel within said burner.

2. A stove according to claim 1 wherein the bottom portion of said burner is flat and the side portion of said burner makes an included angle of substantially with the bottom portion of said burner.

3. A liquid fuel burning stove comprising a generally cylindrical housing, an open-centered annular support mounted generally horizontally within the lower portion of said housing, a plurality of spaced apart legs affixed to the lower end of said housing for supporting said housing and for providing free air circulation beneath said housing, a liquid fuel tank supported on the side of said housing, a manually operable valve mounted on said fuel tank for controlling the flow of liquid fuel therefrom, an integral burner assembly consisting of (l) a lipped generally pie-plate shaped burner with a plurality of air holes in its sides positioned within the open center of said annular support and (2) a single-piece fuel line removably connected to said fuel tank valve and running therefrom to the bottom portion of said burner, an air control plate with a plurality of air holes therein mounted generally horizontally beneath said burner and over the lower end of said housing, said air control plate also having a central opening therein for said fuel line running from said fuel tank valve to said burner within said housing, said central opening being sufficiently large to permit the unobstructed withdrawal therethrough of that portion -of the fuel line lying outside of said housing, and a door in said housing positioned above said burner and said annular support, the opening of said door being sufficiently large to permit the removal therethrough of said integral burner assembly, said integral burner assembly being connected to the other elements of said stove only by the lip of said burner resting on the annular support within said housing to facilitate the easy removal of said burner assembly from said stove through said door opening.

References Cited in the file of this patent UNITED STATES PATENTS 42,059 Witsil Mar. 22, 1864 1,927,434 Cole et al. Sept. 19, 1933 2,212,078 Sabins Aug. 20, 1940 2,214,693 Grotenhuis Sept. 10, 1940 2,347,268 Kessler Apr. 25, 1944