US1321922A - A corpora - Google Patents

Description

F. c. KELLER AND RLA. SHARP. UNIVERSAL FUEL BOILER.

APPLICATION FILED JULYZI, 1919.

1 21,922. Patented Nov. 18', 1919.

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UNIVERSAL FUEL BOILER- APPLICATION FILED JULYZI. 1919.

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FRED C. KELLER AND RICHARD A. SHARP, 0F MILWAUKEE, WISCONSIN; ASSIGNORS TO MILWAUKEE RELIANCE BOILER WORKS, 0F MILWAUKEE, WISCONSIN, A CORPORA- TION OF WISCONSIN.

UNIVERSAL FUEL-BOILER.

Application filed July 21, 1919.

To all whom it may concern:

Be it known that we, FRED C. KELLER and RICHARD A. SHARP, citizens of the United States, and residents of Milwaukee, in the county of Milwaukee and State of Viscousin, have invented certain new and useful Improvements in Universal Fuel-Boilers;

and we do hereby declare that the following is a full, clear, and exact description thereof.

Our invention relates to new and useful improvements in boilers for generating steam, and more particularly of a light and portable type adapted to be set up in a shop or garage to supply steam for various purposes.

It is in general the object of our invention to simplify and render more compact and durable the structure of boilers of this character and to increase the range of adaptability of such boilers.

It is an important object of our invention to provide a boiler of this character haw ing units thereof adapted for use either with solid fuel or with fluid fuel, and wherein certain parts of the boiler structure may be discarded in the use of the boiler for fluid fuel, such as oil or gas.

A further and important object of our invention resides in the provision of a boiler structure of this character which may be constructed in a most economical manner to provide readily assembled and disassembled units.

With the above and other objects and advantages in view, which will be apparent as the description proceeds, our invention resides in the novel features of construction, combination and arrangement of parts which will be hereinafter more particularly described and defined by the appended claims.

In the accompanying drawings:

Figure 1 is a side elevational view of a boiler constructed in accordance with our invention and adapted for burning solid fuel, one side portion of the boiler structure being broken away.

Fig. 2 is a side elevational view of the boiler adapted only for burning fluid fuel.

Fig. 3 is a transverse sectional view through the boiler on the line 33 of Fig. -1.

Referring now more particularly to the drawings, our improved boiler when adapted for burning solid fuel, comprises an up per water and steam chamber A, an inter- Specification of Letters Patent.

Patented Nov. 18, 1919.

Serial No. 312,322.

mediate lire chamber B and an ash pit chamber C.

The upper chamber A is formed of a cylindrical casing wall 5 of sheet metal, and it is closed at its upper end by an upper tube sheet Ghaving its peripheral end portion turned to provide an upstanding flange 7 which is disposed in the upper portion of the cylindrical wall 5 and secured thereto by rivets 8, the upper edge of the flange being spaced below the upper edge of the wall 5, and the tube sheet 6 being disposed a considerable distance below the wall to form a breeching space. The lower end of the chamber A is closed by a lower tube sheet 9 which has its peripheral edge portion turned to provide an upstanding annular flange 10 disposed within the lower portion of the wall 5 and secured thereto by a series of rivets 11, the plate 9 and the lower portion of the flange 10 being disposed below the lower edge of the wall 5 and thus form ing the coniiecting means for the peripheral casing wall 12 of the fire chamber B, which is of the same diameter as the wall 5 and which snugly receives the lower portion of the flange 10 to hold the wall sections 5 and 12 in abutting relation. An annular fire backing is disposed within the wall 12 of the fire chamber and comprises a plurality of arcuate sections 13 held by spacer blocks 1 1 in spaced relation to the annular wall 12 and having their end faces disposed in planes extending radially of the chamber to procure proper abutting relation of said end faces. and to mutually prevent inward displacement of the sections. The sections 13 are formed of suitable castings and are of lesser height than the sheet metal wall 12 to provide space for the bottom tube sheet 9, which seats on said sections 13. The ash pit chamber C isformed by a cylindrical sheet metal casing wall 15 equal in diameter to the walls 11 and 12, but of 0011- siderably lesser height than either wall and a grate annulus 16 of cast metal seats on this wall and affords in turn a seat for the fire chamber wall 12 and backing sections 13, the outer portion of said grate annulus being provided with annular flanges 17 to hold the parts against lateral movement. This grate annulus is provided with journal recesses 18 open at the top of the an nulus for receiving the pintles of a series of grate sections 19, which are preferably of any conventional nature, the pintles being retained in the recesses by the seating engagement of the fire chamber portions on the grate annulus. The ash pit wall 15 seats in the upturned peripheral flange portion of a base plate 20 formed of sheet metal similar to the chamber walls. This wall 15 is also provided with a suitable ash and draft door 21 and the fire chamber wall 12 is provided with the usual door 22.

Fire tubes 23 extend between and connect the tube sheets 6 and 9 of the steam and water chamber A, and a cover section 24, provided with a suitable outlet 25, has a depending peripheral flange portion engageable in the upper edge portion of the wall 5 to form a breeching for the c0mbus tion gases. The chamber A is provided with a water gage w, a pressure gage p and any suitable safety device 8, these parts being in nowise pertinent to the invention. Steam is conveyed from the chamber A by a pipe 26, and water may be supplied to the chamber in any suitable manner.

lVe have thus described an exceedingly simple, compact and eiiicient boiler structure which may be formed mainly of sheet metal sections and which comprises a plurality of readily separable units whereby the boiler structure may be most readily moved from place to place and set up as desired, the units being held in assembled relation by the various interlocking connections procured in setting the units one upon the other. 7

When solid fuel, such as wood or coal is used in the boiler, the entire structure described is used. In some instances, howi ever, it may be desirable to use fluid fuel,

such as oil or gas, and in this instance the grate and ash pit structure may be eliminated, and it Will be particularly noted that by my detachable relation of parts and by forming the Wall sections 12 and 15 equal in diameter, the wall sections 15 and grate annulus may be simply removed and the fire chamber structure seated directly on the base plate 20.

What is claimed is:

1. A boiler of the class described including an upper cylindrical sheet metal section, an upper tube sheet closing the upper portion of said cylindrical section, a lower tube sheet having its peripheral portion upwardly turned to form an annular flange secured within said upper cylindrical section, said flange projecting below the bottom of said upper cylindrical section, fire tubes extending between the tube sheets, a lower Cylindrical sheet metal section equal in diameter tothe upper section and receiving the lower tube sheet and flange, and fire backing sections disposed within and spaced from the lower cylindrical sections, said fire backing sections being oi lesser height than the lower cylindrical section and seating the lower tube sheet.

2. A boiler of the class described comprising a base plate having an upturned peripheral flange, a cylindrical ash pit wali section detachably seated on said base plate and engaged by the flange thereof, a grate annulus detachably seated on the ash pit wall section, a cylindrical fire box wall section equal in diameter to the ash pit wall section and detachably seated on the grate annulus. retaining flanges on said grate annulus for the wall sections, grate sections carried by said grate annulus, and a steam gene 'ating chamber mounted on the fire box wall section.

In testimony that we claim the foregoing we have hereunto set our hands at Milwaukee, in the county of Milwaukee and State of lVisconsin.

F. G. KELLER. R. A. SHARP.

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