US1661820A - Fire-pot construction - Google Patents

Description

' March 6, 1928.

O. J. GROEHN FIRE'POT CONSTRUCTION Filed Novy 3Q, 1921 2 Sheets-Sheet 1 lwueM/ko'z 0 ta rl avda/2 72 Marchl 6, 1928.

1,661,820 o. J. GROEHN FIRE POT CONSTRUCTION 'Filed Nov, SQ, 1921 2 She'etSP-Sheet 2 w, www@ Patented Mar. 6, 1928.

unire!) i stares OTTOJ. GROEI-IN, OF DEIJROI'IJ,y l1VIICI"lIIGrA1\T, ASSIGNOR TO CLAYTON &.LA1VIBERT MANU.`

rATENr-,oFFIcri FACTURII'JG COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

FIRE-POT CONSTRUCTION.

Application lcdvNovember 30, 1921. Serial No. v518,881.

This invention relates to a fire pot construction and refers more particularly to lire pot constructions such as areladopted for plumbers furnaces and other oil burning devices.

One of the main objects of the invention is to utilize the flame generated foi-heating purposes for also heating the generator that r are obtained Without materially changing constructions now in use, and in general to provide a new and improve-d fire pot construction of the character above mentioned. The invention also resides in the novel 'arf rangement of the ears or lugs forming both a bale or handlev connection and a .stop against which the handle` abuts and in such further details of construction and arrangements and combinations of parts as willmore fully hereinafter appear.

In the drawings: y

Fig l is a side elevational View'` partly in section through a plumbers furnace embodying my invention;

F ig. 2 is a top plan View partly 1n section of the construction shown in Fig. l.

Figs. 3 and 1 are detail views `of the handle ears, and l Figure 5 is a detail transverse sectional view ofthe U-shaped fuel conductor showing the deflector plate in position.

Describing in detail the construction shown in the drawings, A designates the tank of a plumbers furnace having the usual pump A and supporting standard A2 which carries the combustion chamber4 B, the burner C and drip cup C. The combustion chamber is in the form of a fire pot which is open at its upper end and also has an opening at its forward end providedwith a support l) hinged at D to lugs DL carried by the wall of the combustion chamber B. The support D is adapted to forma support for soldering irons and other instruments (not shown), the part of the instrument to be heated projecting into the combustion chamber, while the handle part is supported by the support D. Within this chamber B there is located a U-shaped fuel conductor member E which has a rearwardly extending center portion F into which the vaporized fuel for Vthe n combustion is discharged through the nozzle At the kpoint of this discharge the fuel is mixed with air and returns to the outer members E2 of the combustion member E. The members E2 form the burnersv at opposite sides of the combustion chamberi i i i Heretofore it has been customary in constructions of this kind to havev thevburning gases directed upwardly through holes in the top of the ymembers E2; Inthe present construction l provide the membersE2 `with longitudinally extending slots H` which open inwardly toward the combustion cham-` ber and by means of a defiector plate I the combustion flame from one of theburners E2` is turned upwardly asshown best in Figure 5. 'In place of making this defiectorplate.l for both sides of the U-shapedmember it isl preferably extended upon one side only, as

shown in Figure 5, the combustion fla-me from the burner E2 on the other side of the combustion chamber being deflected upwardly by the generating chamber J. Thus .it will be noted that the outer members E? of the U-shaped fuel conductor E form burners, the fuel mixture passing from nozzle G, thence through the center portion E to the slots H of tl'iejburners E2. 'Vithin the mem bers E2 may be located a wire screen E3` or the-like, adapted to assist in mixing the fuel and airconducted to the slots H. The fuel is fed upwardly y'to the genera-tor chamber through the ,conduit K which at its upper end opens into a chamber K where it is forced to travel to the end of the tube and back through the latter to the port K3.

The latter is cont-rolled by a needle valve L y carried by the screwethreaded.stem L and operated by the usual handle L?. lVhen this valve is opened the fuel then passes through the `conduit M Vto the ,discharge orifice G which 'iskept clean by means of a cleanput member N carried by the screw-threaded stem- U adjusted by the usual `hand wheel N2. It will be noticed that the tube l?? is voffset to lie against thewall,Owhich .is

directly adjacent the slot H whereA the burning takes place. By this novel construction the flame which is used to heatt-he solder] tank or other membersset ,uponl the furnace is also utilized to heat the generating ,chaine ber since the fiume from the slot H- will strike against the member Jfthus playing an intense heat upon the generator member which in turn also acts as'part of the deflector to deflect the flame upwardly. This novel ari-augment not only gives a simple and compact arrangement but permits of a relatively small drip cup C for starting the burner and also materially increases theeliiciency of the entire fire pot construction.

In addition to the features above mentioned the invention also resides in the novel construction of handle ears Q. `These ears, asin Figs. 3 anda, consist of a metal stamping Rwhich is offset at R and then again inwardly offset at R2. The latterportion carries a tongue or lip S which extends through a hole in' the wall of the furnace chamber B and is then bent upwardly in assembling the parts. At its lower end the handle ear is provided with bearing portions T and T which are riveted or otherwise rigidly secured to the wall of the lfurnace chamber. The offset arrangement of the handle ears has a further advantage in that the portion It2 forms a rigid reinforced stop against which the lower part of the handle T abuts when the device is being carried.

YWhat I claim as my invention is:

1. In a fire pot construction for plumbers furnaces or the like, the combination with a burner having llame discharging means, of a generatorlocated adjacent to a portion of said flame discharging means and adapted to deflect a portion of the entire burner llame upwardly, and a plate cooperating withother portions of the flame discharge means for deflecting other portions of the said entire flame.

2. In a tire pot construction for plumbers furnaces orthe like, the combination with a combustionchamber, of a. U-shaped fuel conductor forming burner elements positioned at opposite sides of the combustion chamber, a deilector for directing the flame from one of the burners to the combustion chamber, and a generator for deflecting the flame from the other of said burners to the combustion chamber.

3. In a lire pot construction for plumbers furnaces or the like, the combination with a U-shaped fuel conductor forming longitudinally extending burner elements, of a deflector plate for deflect-ing the flame from one of tlic burners, and a generator'for deflect-ing the flame from the other of said burners.

4. In a re pot construction for plumbers furnaces or the like, the combination with a combustion chamber, of a uplurality of burners below the combustion chamber, a deflector for directing the flame from one of the burners to the combustion chamber, and a generator for deflecting the flame from the other of saidburners to the combustion chamber. y

5. In a fire pot construction for plumbers furnaces or the like, the combination with a fuel discharge nozzle, of a U-shaped burner in front of said nozzle, said burner having a rearwardly extending center portion bctween the arms of the said U-shaped burner and in the same horizontal plane therewith and into which the fuel from the nozzle is discharged, one side of said U-shaped burner haring a perforation therein, and a generator located in the aforesaid plane and adjacent to ysaid perforation, and in communication with said nozzle.

(i. In a device of the class described, the

combination with a combustion chamber, of a fuel discharge nozzle, a U-shapcd burner below the combustion chamber, and in coinmunication with said nozzle, said burner having a rearwardly extending center portion between the arms of the U-shaped burner for receiving the fuel from said nozzle, and a generator disposed between the arms of the U-shaped burner, one arm of said burner having an opening for directing the flame laterally against the said generator whereby the flame is deflected upwardly to the combustion chamber, said burner center portion and generator lying substantially in the same plane horizontally. 7. A fire pot construction for plumbers furnaces or the like having a fuel supply tank and a combustion chamber above the supply tank in the form of a fire pot open at the upper end, a U-shaped fuel conductor forming burner elements positioned at opposite sides of the combustion chamber adjacent the bottom of the said fire pot and provided with a'me openings, said U-shaped conductor having a rearwardly extending center portion between the burner elements and in communication therewith for supplying fuel thereto, a fuel discharge nozzle positioned at the rear of the said center portion for directing fuel thereto, a generator nested horizontally between one of said burner elements and the said center portion, and in communication with said fuel supply tank and said discharge nozzle, said generator adapted to be heated by the llame from the said flame opening of the said burner element lying adjacent to the generator.

8. In a fire pot construction for plumbers furnaces or the like having a fuel supply tank and a combustion chamber above the supply tank in the form of a fire pot open at the upper end, a U-shaped furl conductor forming burner elements positioned at opposite sides of the combustion chamber adjacent the bottom of the said fire pot and provided with llame openings, said U-shapcd conductor having a rearwardly extending center portion between the burner elements and in communication therewith for supplying fuel thereto, a fuel discharge nozzle positioned at the rear of the said center portion for directing fuel thereto, a generator cxtending longitudinally adjacent one of said till l IH

burner elements and in communication with said fuel supply tank and said discharge nozzle, said generator being located substantially in the plane of the said burner eleinentsand adapted to be heated by a flame from the said burner element lying adjacent the generator.

9. ln a fire pot construction for plumbers furnaces or the like, having a fuel supply tank and a combustion chamber above the supply tank in the form of a tire pot open at the upper end, a U-sliaped fuel conductor forming burner elements positioned at opposite sides of the combustion chamber adjacent the bottoni of the said fire pot and provided with flame openings, said 'el-shaped conductor having a rearwardly extending center portion between the burner elements and incominunication therewith for supplyf ing'fuel thereto, a fuel discharge nozzle positioned at the rear of the said center portion for directing fuel thereto, a generator extending longitudinally adjacent onevof saidk

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