US2301183A

US2301183A - Liquid fuel burning stove

Info

Publication number: US2301183A
Application number: US403925A
Authority: US
Inventors: Charles A Martin
Original assignee: ROBERT NELSON FREEMAN
Current assignee: ROBERT NELSON FREEMAN
Priority date: 1941-07-24
Filing date: 1941-07-24
Publication date: 1942-11-10
Anticipated expiration: 1959-11-10

Description

Nav. 10,Y 1942. c. A. MARTIN 2,301,183

LI'QUID FUEL BURNING sTovE FiledrJuly 24. 1941 Patented Nov. l0,` 1942 UNITED sTATEs PATENT OFFICE LIQUID FUEL BURNING srovE chinees. Marcin,

Tupelo, Miss., assignor of onehalt to RobertNelsonFreeman, Tupelo, Miss. Application July 24, 1911, Serial No. 403,925

1`Claim.

This invention relates generally to the class of stoves and pertains particularly to improvements in stoves of the oil burning type which are designed for domestic cooking purposes.

In certain types of oil burning cooking stoves there are employed wicks which are enclosed within chimneys and are supported to be raised and lowered for controlling the burning of the wick vand consequently the temperature of the cooking flame. At the present time the wicks are controlled by various types of devices involving toothed units and lever mechanisms whereby the wick may be raised and lowered as desired with respect to the level of the fuel oil in the holder in which the wick is located, and with these controls there are used slip joints in the fuelpipes which include packing nuts, which may be so loose as to leak or so tight as to interfere with the smooth operation of the wick. causing the same to jerk and the flame tosputter. These means of controlling the wick are unsatisfactory for the reasons that they get out of order, the slip joints wear and leak, forming a fire hazard and also because of the fact that it is necessary for the attendant of the stove to stoop down s when making adjustments.

The present invention has for its primary object to provide an improved wick carrier or support with means associated therewith whereby the adjustment of the wick can be made easily i and quickly by a vertically slidable carrying stem or support which may be operated by a ilexible cable.

Another .object ofthe invention is to provide i in association with a wick adjusting means of this character a flexible tubular connection between the liquid fuel reservoir and the channel or moat in which the wick is mounted, whereby such channel or moat may be raised and lowered as desired to control the working level for the fuel oil with respect to thev wick, without ernploying slip-couplings which may develop leaks.

Another object of the invention is to provide in a domestic cooking stove a wick control means and carrier of improved design and construction, by means of which the raising and 'lowering of the wick as desired may be accomplished easily and smoothly by the operator of the stove while standing erect infront of the same and also` whereby a line adjustment of the wick with respect to an overlying object may be accomplished.

The invention will be best understood from a consideration of the following detailed descripf tion taken in connection with the accompanying drawing, itbeing understood, however. that the fifi invention is not to be considered as limited by the speciic illustration or description but that such illustration and description constitutes a preferred embodiment of the invention.

In the drawing:

Figure 1 is a view in top plan of a four burner stove in which the presentinvention is shown for regulating the wick and for supplying the same with fuel oil.

Figure 2 is a vertical section taken substantially on the line 2-2 of Figure 1.

Figure 3 is a vertical section taken ,through` the guide for thewick supporting stem and adjacent associate parts.

Figure 4 is a sectional view on the line I-l .or Figure 3.

^ Referring now more particularly to the drawing the numeral I generally designates the body or frame of a stove having the end walls 2, the front and rear walls 3 and 4 respectively and a top 5 in which is formed an opening 6 over which a receptacle may be placed to cover one` of the burners hereinafter described.

In accordance with the present invention there is provided a suitable support within the stove frame for one or more of the burners, such support being here shown as comprising a bar I in the form of angle iron, at eachend of which is an upstanding ear 8 which is bolted or other- Wise secured to an end wall 2 so that the bar extends from one side of the stove structure to the other'below the top 5 and within the area defined by the edges of the opening 6.

In the present stove construction there are shown four dburner units each of which is indi- Acated by the character B. Each burner unit comprises an annular receptacle indicated generally bythe numeral 9 and which has the spaced vertical inner and outer walls I0 and II respectively which are in relatively closely spaced relation and are joined at their lower edges by the bottom I2. y i n The central portion ofthe annular receptacle 9 is closed by the dish-like horizontal wall i3 which is joined at its periphery to the top edge cross-section and having the back wall extended downwardy a substantial distance to form the tail-piece I'I. The front wall of the guide I6 is provided with a longitudinal slot I8 for the purpose hereinafter stated.

Secured to the center of the under side of each wall I3 is a supporting stem I9 which extends into the guide IG and has a close sliding t therein.

Secured to the face of the tail-piece II of each guide by means of a U bolt 2|) or in any other suitable manner, is an end of tubular sheath 2| which at its other end is secured in a rigid tubular guide 22,which is secured vertically to and has its other end extending through the front part of the top wall 5 as shown in Figure 2. Where a number of these sheaths 2| are employed in association with a corresponding number of burners it is preferred that they all be grouped together at their outer ends as shown in Figure 1 so that the hereinafter described flexible wire control buttons may be easily accessible to an operator of the stove. v

Slidably disposed within the exible sheath 2I is a control wire 23 which, as shown in Figure 3, has one end extended into a bore in the lower end of the stem I9 where it is removably secured by the knurled thumb-screw or bindingscrew 24, the stem of which extends through the slot I8 of the guide I6. This slot therefore limits the movement of the stem by limiting the extent to which the screw may move when the exible actuating wire 23 is longitudinally shifted in its protecting fierdble sheath.

The opposite end of the wire, which extends through the rigid guide 22 and above the top 5 of the stove, carries a button 25 as shown, by which the wire may be shifted as desired.

In order that the several sheaths 2I may be firmly secured against movement each is coupled to the front wall of the stove by a U bolt" 26.

The bottom I2 of the annular channel has secured thereto the nipple coupling -21 to which is attached an end of a flexible liquid fuel conducting pipe 28.

Upon the back of the stove there is mounted a sump 29 or sub-tank in which is placed the usual removable fuel tank 30 from which the fuel runs through a suitable outlet into the sub-tank. The support for the sub-tank may comprise a pipe-line or conduit indicated generally by the numeral 3l which is secured in any suitable manner to the back wall 4 of the stove and which, in a stove having aplurality of burners, may lead to a distributing manifold 32, as shown, mounted within the body of the stove. This manifold is provided with a number of outlets corresponding to the number of burners and flexible pipes for coupling the manifold with the burner so that each burner is separately supplied from the manifold.

The numeral 33 designates a wick winch is of circular form and which is disposed within the annular receptacle 9 and each burner includes a chimney 3&3, the lower edge of which rests in the annular gutter I5 and consequently enclrcles the top edge of the wick.

The relative positions of the burners and the sub-tank are such that by manipulating the control wire 23 the Wick carrying annular receptacle can be raised so that the bottom thereof will be above the fuel level in the sub-tank, which level is indicated by the broken line 35 and consequently, because of the lack of oil, the

burner, if lighted, will go out. When it is desired to light a burner the annular receptacle 9 is lowered so that the bottom of the receptacle will be below the fuel level 35 consequently fuel will flow from the flexible pipe into the annular receptacle to be absorbed by the Wick.

lBecause of the employment of the flexible pipe 28 and the consequent elimination of any slip joint this stove construction is leak proof and consequently firel hazards are completely removed or reduced to a minimum.

There vare also relatively few parts to Wear land no moving parts to get out of adjustment The fuel pipes and burner are easily and quickly cleaned in case waterfor food boils over and runs down intovthe annular fuel receptacle in which the wick is placed. If this should happen it is merely necessary to remove the chimney, take out the knurled binding-screw 24 and lift the entire wick receptacle from the burner unit after which it can be inverted so that Water or other material may be poured out.

` up and down movement.

As previously stated, the construction of the present burner units is such that if Water or other fluid boils over and gets into the annular channel in which the wick is supported, this may be readily removed and the channel cleaned by lifting the entire unit out of the stove, and this work may be performed in a few minutes, whereas with other types of burners, in order to put the device back into proper working order, hours may be required to disassemble the structure, clean the parts, and then reassemble them.

In the description, the form and arrangement of the parts shown has been particularly specified, but it is to be understood that the invention ls not to be limited either to the type of material of which the parts are constructed, the location of the buttons 25, the shape of the guides for the stems I9, or the form and manner of mounting the bar l upon which the burner units are supported. Also, any suitable location may be employed for the fuel receptacle and sump, and any suitable means may be employed for securing the flexible sheath ZI to the stem guide and to the body of the stove, other than the U-bolts particularly shown and described.

What is claimed is:

A liquid fuel burning stove comprising a frame structure having a top, the top having an opening therein, a bar secured horizontally within the frame beneath said opening, a vertically disposed tubular guide secured to the bar, said guide having a skirt portion extending downwardly at one side below the lower end thereof,'a stem slidably disposed within the guide and extending beyond the upper end thereof, a wick carrier comprising a plate portion having an annular channel thereabout for the reception of a wick, said plate portion being secured centrally to the top of said stem to be raised and lowered thereby, a liquid fuel receptacle, a flexible tubular fluid conductor leading fromthe lower part of the receptacle to the lower part of said wick channel, and means facilitating the raising and lowering of the stem and wick carrying channel comprising a. tubular 4 the length of said sheath and having one end secured in the lower end of the stem, and an actuator button secured to the other end of the Wire at the said other end of the sheathand disposed above said top to facilitate actuation 'of the 5 wire through the sheath.

CHARLES A. MARTIN.