US1679556A - Stove - Google Patents

Description

Aug. 7, 1928.

L. T. WILCOX swovn Filed Oct. 1, 1927 3 Sheets-Sheet 1 Aug. 7, 1928.

L. T. WILCOX STOVE Filed Oct. 1, 1927 3 Sheets-Sheet 2 auoentoz ZfW/S T MIC 0X Aug 7, 1928.

L. T. WI LCOX STCVE Filed Oct. 1, 1927 3 Sheets-Sheet Patented Aug. 7, 1928.

LEWIS T. WILCOX, OF PEEKSKILL, NEW YORK.

STOVE.

Application filed October 1, 1927. Serial No. 223,285.

My invention relates to stoves such as cooking stoves employing oil burners supported upon burner base and which supply heat through a drum or chimney to one or more cooking openings and are in turn xplied with fuel from an oil reservoir attached to the ktcllOl of the stove.

It is becoming the practice to construct such types of stoves from sheet'metal as far as possible and accordingly to stamp'as many of the parts as possible from sheet metal thus reducing: the cost (it manuiacturmg, shipping andasse sibling. However in mass production of sheetmetal parts it frequently happens that the stampings are not exactly unit'erm and consequently when the several parts oi a stove being assembled it may occur that the adjoining sections such as the burner shell and drum do not always align themselves properly to make a tight joint and yet retain the pix per relative posi; 'tions. Also in many instances the floor upon which the stove is placed is not exactly level resulting in a consei uient tilt of the stove and otthe tuel reservoir. I

t is the purpose oi? this invention to provide a stove constructed principallyot sheet metal parts v-urich will permit adjustment thereof when the parts are being assembled in order that they may be secured together and yet be in proper alignment and position and which will permitadjustment of the several parts after the stove has been assembled. Accordingly I support the burner shell or tube directly upon the fuel supply pipe and in proper relation thereto through the medium eta base ringrigidly secured thereto and to which the burner shell is removably secured. The burner drum is constructed to lit at its upper end into an opening in the heat collector or other pertion of the upper stove assembly and is adjustably supported at its lower end upon a curved shoulder "formed upon a burner collar carried. by the burner shell in such manner that tl'iroughout wide Variation of upright positions of the drum the bottom thereof will lit tightly upon the collar and not permit a flow ot air through the joint. My invention also con prehonds a special. adjustable atta hment or support :ter the fuel tank against the side of the stove so as to permit otjangular adjustment of the supply pipe to level the burner seats.- Means for detachabiy latching the burners to the base are also included within my lIU'GHtlOIl. Other features tend within the shell. 2. turned inwardly to form a flange 17 which of my invention will appear from the following detailed description of the embed]? ments thereof illustratedin the accompanying drawings in which F ig. 1 is a front elevation partly insection of a stove constructed in accordance with my invention;

Fig. 2 is a section on line 2-2 of Fig. 1;

Fig. 3 is a'sec'tional detail through the lower portion of a burner drum and collar;

portion of the fuel supply pipe, and" Fig. 1.0 is a sectional detail through the upper-portion of a modified form of stove.

In the embodiment of my invention-as il lustrated in Figs. 1 to 8 I have shown an oil cook stove employing a pair of burners 2 each burner-termed of sheet metal and utilized to supply heat through a tubular drum 3 to a pair of cooking holes in a stamped metal heat collector .4- carried by the stove top 5,;the top being supported as usual-by. legs 6 joined by a side wall '7. A grate 8 isplaced over the cooking holes to support a pan or vesselthereover.

A fuel pipe 9 is clamped to a burner base 10 bystraps 11 and supplies the burners with fuel and. also serves indirectly as a support for the burners. A base collar or ring 12 of equal diameter to that of the burner shell is cut out at two diametrical points to fit partially over the pipe 9 and is soldered or otherwise rigidly secured thereto and.

forms a seat .tor the burner. The ring 12 is preferably drawn from sheet metal and thelower edge (Figs. i, 5 and 6') is curled into a .bead13 from which it extends upwardly to form a cylindrical vertical wall 14, then inwardly to form a seating ledge 15'..o1t' width equalte the thicknessof the burner shell, then upwardlyagain to form a retaining cylindrical wall 16 adapted to ex- The ring is finally is enlarged at two diametrically opposite portions wherein openings 18 are cut for reasons later disclosed.

The lower extremity of the tubular burner shell 2 fits upon the ring 12 with the bottom resting upon the seating ledge 15, and is held thereon by means of a resilient spring metal U-shaped latch member, the free ended arms 19 of which extend downwardly from within the shell, where they are soldered or otherwise fastened thereto, through the openings 18. At the very end the arms 19 are bent to form a hook or latch 19" to engage the under surface of ledge and securely retain burner shell 2 upon the base ring 12. The connecting arm 20 of the U- shaped latch member extends diametrically across the shell and is twisted 90 in order to bring its faces vertical. This portion of the latch member may be used as a support for a heat spreader 21 if so desired (Fig. 2).

The burner is connected to fuel pipe 9 by means of a flanged elbow 22, riveted to the side of the burner shell, nipple 23 and coupling 24, thus enabling the fuel pipe to be disconnected at will by merely loosening the coupling 2 1. The burner may be quickly removed by loosening coupling 2a, pressing latches 1.9 together to disengage them from burner ring 12 and raising the burner free and clear from the stove.

A tapered burner collar 25 also preferably drawn from sheet metal is mounted upon the upper end of the burner so as to extend around the upper portion thereof and is supported thereon by means of four webs 26 extending inwardly from the collar to the burner shell, the edges of which engage the shell and a bead 27 spun outwardly from the burner. The lower edge of the collar is of substantially greater diameter than the burner shell, is circular in cross section and rolled to form a bead 28 from which the collar extends upwardly for a short distance in a spherical contour to form an annular seating shoulder 29 constituting substantially a portion of a sphere after which the collar continues upwardly at a constantly decreasing diameter to a point slightly below the flame spreader where it is only a little larger in diameter than the spreader.

The lower end of drum 3 is reduced in di ameter to substantially that of the curved shoulder portion 29 of the burner collar and terminates in a curled head 30 which rests upon shoulder 29. The upper end of drum 3 projects through the flanged opening in the bottom of the heat collector 4 whereby the drum forms a heat conduit from the burner to the heat collector. It readily follows that even though the opening in the bottom of the heat collector may not be directly over the burner, i. e., concentric therewith, the lower end of drum 3 terminating in bead 30 will rock about the curved seating shoulder 29 and still maintain an airtightjoint, thus preventing the admission of air therethrough.

One end of fuel pipe 9 is connected through a bend 31 to the bottom of a subtank 32 over which is an inverted fuel tank 33. The tank and subtank are supported upon one side' wall 7 in spaced relation thereto by means of a U-shaped sheet metal bracket 34, the lower portion of the connecting arm of which is soldered or otherwise rigidly secured to the subtank as at 35 and the upper portion is curved to fit the contour of the upper tank 33 as at 36 to constitute a rest therefor. The two free ended arms of the U-shaped bracket are flanged outwardly at their extremities and are socured to the end wall of the stove by means of four bolts 37. For this purpose the wall 7 has four arcuate slots 38 cut therein with the center of fuel pipe 9 as a center from which the are is struck, through which slots the securing bolts 37 pass. Surrounding one of these four slots a circular head 39 is pressed inwardly in wall 7. A cam disk 10 having a spirally cut slot 41 therein is mounted for rotation within the circular bead, one of the bolts 37 passing through this slot as well as the slot in the wall 7. The disk is formed with a laterally bent finger 12 by means of which disk 10 may be rotated about bolt 37 as a center. If it is desired to adjust the fuel pipe 9 angularly in order to level the burner seats 12, it is only necessary to loosen bolts 37 and rotate disk 10 whereby the reservoir and the pipe 9 will rock about the axis of pipe 9 as a center and bracket at will slide on wall 7 within the limits of slots 38 cutthereinto.

Instead of the burner ring 12 having its bottom edge recessed at two points to fit upon the fuel pipe 9, as above described, it may be otherwise secured upon the pipe. For example, as shown in Fig. 9 the burner ring 12 may have its annular vertical wall 14 wider than the diameter of the pipe 9 and provided with two opposing openings which fit over the pipe, the metal below the openings serving to space the pipe slightly from the burner base 10 upon which the bottom edge of the ring12 rests. As in the construction previously described, the ring may be soldered or otherwise attached to the pipe.

Referring particularly to Fig. 10 I have shown the upper portion of modified type of stove wherein a single burner is utilized to supply heat to a single cooking opening and in this instance the upper end of the drum 3 projects through an opening formed in a heat collecting chamber 4 formed by downwardly inclined walls which are integral with and extensions of the stove top part 5. The usual grate 8 is placed over the heat collecting chamber to support a vessel thereover. The lower part of the stove structure may be similar to that previously described.

From the foregoing it is apparent that I have provided a cook stove which may be readily assembled and disassembled and which may be constructed chiefly of sheet metal parts which tend to auton'latically adjust themselves into close fitting position and which permit of manual adjustment where necessary due to variation in processes of manufacture and of installations.

It is to be understood that the features of my invention may be applied to other types of stoves and that various modifications may be made without departing from the scope and spirit of my invention as defined in the appended claims.

I claim:

1. In a cook stove, a burner shell, a fuel supply pipe detachably connected to said burner shell for delivering fuel thereto, a burner supporting ring rigidly secured to said pipe and underlying said burner eonstituting a support therefor, and means for detachably securing said shell to said ring.

2. In a cook stove, a burner shell, a fuel supply pipe detachably connected to said burner shell for delivering fuel thereto, a burner supporting ring rigidly secured to said pipe and underlying said burner constituting a support therefor, and means for de-,

tachably securing said shell to said ring comprising a releasable spring latch mem her. I

3. In cook stove, a burner shell, a fuel stituting a support therefor, having a seat-' ing ledge and a portion projecting into said 7 burner shell to position the same thereon, and means for detachably securing said burner upon said ring comprising spring latch members releasably engaging said ring.

5. In a cook stove, a top part including a heat collecting chamber, a burner disposed below said chamber for generating and supplying heat thereto, and a drum constituting a heat conduit connecting said burner and said chamber, said drum projecting into said chamber 'at its upper end and rockably resting upon said burner at its lower end with its lower edge contacting throughout with said burner. I

6. In a cook stove, a top part including a heat collecting chamber, a burner disposed below said chamber for generating and supplying heat thereto and having a curved annular seating shoulder, and a drum constituting a heat conduit connecting said burner and said chamber, said drum projecting into said chamber at its upper end and rockably resting upon said curved seating shoulder at its lower end with its lower edge contacting throughout with said shoulder.

7. In a cook stove, a top part including a heat collect-ing chamber, a burner disposed below said chamber for generating and supplying heat thereto, a drum constituting a conduit for conducting heat from said burner to said. chamber, a collar supported from and surrounding said burner and having a curved seating shoulder upon which the lower end of said drum rests, the upper end thereof projecting into said chamber.

8. In a cook stove, a top part including a heat collecting chamber, a burner disposed below said chamber for generating and supplying heat thereto, a drum constituting a conduit for conducting heat from said burner to said chamber, a collar supported from and surrounding said burner and having an annular seating shoulder constituting substantially a portion of a sphere, the lower edge of said drum being circular and of a diameter to rest thereupon, the upper end of said drum extending into said chamber and being retained thereby.

9. In a cook stove, a frame, sheet metal side walls carried by said frame, a burner mounted within said walls, a fuel pipe leading to said burner, and a fuel reservoir connected tovsaid pipe and adjustably secured to one of said walls adapted to be rotated about an axis perpendicular to the plane of said wall.

10. In a cook stove, a frame, sheet metal side walls carried by said frame, a burner mounted within said walls, a fuel pipe leading to said burner, and a fuel reservoir connccted to said pipe and adjustably secured to one of said walls and adapted to be rotated about said fuel pipe as a center of rotation.

11. In a cook stove, a frame, sheet metal side walls carried by said frame, a burner mounted within said walls, a fuel pipe leading to said burner, a fuel reservoir connected to said pipe and adjustably secured to one of'said walls and adapted to be rotated about an axis perpendicular to the plane of said wall and means for rotating said reservoir whereby it may be adjusted to different an-v gular positions.

12. In a cook stove, a frame, sheet metal side walls carried by said frame, a burner mounted with said walls, a fuel reservoir for supplying fuel to said burner, and means for ad ustably securing said reservoir to one of said walls comprising a bracket rigidly secured to said reservoir and adjustably secured to said wall by fastening means passing through said bracket and said wall, one of said latter two elements having arcuate slots therein through which said fastening means passes whereby said bracket may be moved relatively to said wall.

1;}. In a cook stove, a fran'ie, sheet metal side walls carried by said frame, a burner mounted with said walls, a fuel reservoir for supplying fuel to said burner, means for adjustably securing said reservoir to one of said walls comprising a bracket rigidly secured to said reservoir and adjustably secured to said wall by fastening means passing through said bracket and said wall, one of said latter two elements having arcuate slots therein through which said fastening means passes, and means for adjusting said bracket and reservoir relatively to said wall within limits of said slots.

14. in a cook stove, a frame, sheet metal side walls carried by said frame, a burner mounted with said wall, a fuel reservoir for supplying fuel to said burner, means for adjustably securing said reservoir to one of said walls comprising a bracket rigidly secured to said reservoir and adjustably secured to said wall by fastening means passing through said bracket and said wall, one of said latter two elements having arcuate slots therein through which said fastening means passes, and means for adjusting said bracket and reservoir within limits of said slots, comprising a rotatable cam disk having an eccentric slot therein through which one of said fastening means passes.

15; In a cook stove, a frame, sheet metal side Walls carried by said frame, a burner mounted witl said walls, a fuel reservoir for supplying fuel to said burner, and means for adjustably securing said reservoir to one of said walls con'iprising a bracket rigidly secured to said reservoir an d adjustably secured to said wall for fastening means pass ing through said bracket and said wall, one or said latter two elements having areua'te slots therein through which said fastening means passes, said wall having a circular bead surrounding one of said slots, and means for adjusting said bracket and tank within limits of said slots comprising a cam disk rotatable within said circular bead and having a cam slot engaging one of said fastoning means.

16. In a stove, a burner a d a supporting ring therefor, said ring ving portion thereof adapted to extend into the lower portion of said burner, said burner having a latch depending therefrom adapted to engage said ring to secure said burner thereto.

17. In a stove, a burner and a burner base for sugporting said burner thereon said burner having a latch thereon adapted to engame said base to releasably secure said burner to said base comprising a U-shaped' LEl/VIS T. l VILCOX.

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