US1844453A - Furnace construction - Google Patents

Description

Feb, 9, 1932, E. L WATSON 1,344,453

FURNACE CONSTRUCTION Filed Oct. 13, 1930 2 Sheets-Sheet 1 INVENTOR ATTO RN EYX Fab. 9, 1932.. WATSON 1,844,453

FURNACE CONSTRUCTION Filed Oct. 15, 1930 2 Sheets-Sheet 2 INVENTOR ATTORN EY.S

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Fatcnted Feb. 9, 1932 "UNITED S'T'TES EARNEST L. WAT$ON, OF MILAN, MICHIGAN FURNACE CONSTRUCTION Application filed October 13, 1930. Serial No. 488,476.

This invention relates generally to furnace structures and refers more particularly to the construction of and connections between the combustion chamber and radiator of a hot air furnace.

Una of the essential objects of the invention is to provide a furnace structure in which the combustion chamber is formed of one material, preferably steel, while the radiator is formed of another material, preferably cast iron.

Another object is to provide a furnace in which the connections between the combus tion chamber and radiator are of special dei sign and comprise parts having metal-tometal contact, whereby gaskets and all furnace cement have been dispensed with entirely.

Another object is to provide a furnace structure that may be readily converted from one type to another, i. e., frorn a coal furnace to an oil burning furnace.

hither objects, advantages and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawings, wherein:

1 Figure 1 is a vertical sectional view through a furnace embodying my invention;

Figure 2 is a sectional View taken on the line Q;% of Figure 1;

Figure 3 is a sectional view taken on the line 3-3 of Figure t;

Figure 4 is a detail View of one of the nipplea;

Figure 5 is a detail view of the other nippie;

Figure 6 is a View similar to Figure 1 but showing a slightly modified construction;

Figure 7 is a sectional view taken on the line t'? of Figure 6.

lhtcferring now to the drawings, A is the ash kw pit; F are the grates; C is the combustion chamber; D is the tire brick lining of the combustion chamber; E is feed chute to the combustion chamber; F is a door for said chute; G is the radiator,- and H is the outer casing of a furnace embodying my invention.

In the present instance, the upright walls 1 and dome 2 of the combustion chamber 0 are formed of sheet steel, whereas the radiator G is cast iron. Preferably the chamber C and radiator G are provided at diametrically opposite points with aligned tubular portions 3, 4, 5 and 6 respectively and are connected by means of nipples? and 8 respectively. As shown, the nipple 7 has a rounded outer face fitting Within the aligned tubular portions 4 and 6 respectively of the radiator and combustion chamber, while the nipple 8 has two sections 9 and 10 threadedly engaging each other and slidably engaging aligned tubular portions 3 and 5 respectively of the radiator and combustion chamber. Preferably the inner faces of the tubular portions 4 and 6 are beveled as shown so as to more readily conform to the rounded outer face of the nipple 7. The sections 9 and 10 of the nipple 8 have shoulders 11 and 12 respectively engageable with the ends of the tubular portions 3 and 5. The section 9 is slidable but not rotatable relative to the tubular portion 5 of the radiator, whereas the section 10 is rotatable and slidable Il8.l]l"6 to the tubular portion 8 of the chamber C. Hence when the section 10 is rotated relative to the section 9 the shoulders 11 and 12 will he moved toward or away from the ends of the tubular portions 3 and 5. After the shoulders 11 and 12 have been engaged with the ends of the tubular portions 3 and 5, further rotation of the section 10 will cause the radiator G to shift horizontally between the diametrically opposed nipples 7 and 8 so that the connection between the nipple 8 and tubular portions .3 and 5 as well as the connection between the nipple 7 and portions 4 and 6 will become tight. Any suitable means such as the bolt 13 and lug 14 may be used to retain the parts in adjusted position. Thus a metal-to-metal contact is provided at the joints and gaskets and furnace cement has been dispensed with entirely. Preferably the section 10 contains a pivotally mounted damper 10 for controlling the discharge of the products of combustion from the coIn bastion chamber G into the radiator G.

The foregoing constructionis particularly Mm and 6 of the combustion chamber is closed by a plug 15 and an inclined partition 16 is preferably inserted in the radiator G at the outer end of the sectional nipple 8 so'that the products of combustion will be forced to travel completely around the radiator before they can pass out through the outlet 17 to a suitable flue (notshown), Thus with my construction the furnace is readily convertible for use as either a coal or. oil burner.

While it is believed that from the foregoing description the nature and advantages of the invention will be readily apparent, I desire to have it understood thatl do not limit myself to what is herein shown and described and that such changes may be resorted to when desired as fall'within thescope of what is claimed.

What I claim as my invention is:

1. A furnace having a combustion chamber provided at diametrically opposite points with laterally projecting tubular portions, a radiator upon the outer side of said chamber having tubular portions in alignment with thetubular portions aforesaid, and connections between said radiator and chamber including nipples engaging the aligned por tions aforesaid of the radiator and combustion chamber, one of said nipples having relatively adjustable parts adapted when ad-' justed to cause the other nipple tobe held in tight engagement with certain of said aligned tubular portions.

2. A furnace having a combustion chamber provided at diametrically opposite points with laterally projecting tubular portions, a circular radiator enveloping the chamber and having tubular. portions in alignment with the tubular portions aforesaid, connections between the said combustion chamber and radiator including nipples engaging the aligned portions aforesaid, a plug in one of said tubular portions of the chamber, and means within the radiator opposite the other tubular portion of the chamber and causing products of combustion received in the radiator from the chamber to travel longitudinaily of the radiator before being discharged therefrom. i

3. A furnace having a combustion chamber provided at substantially diametrically opposite points with openings, a radiator enveloping the chamber and having openings in substantial alignment with the openings aforesaid, connections between the said combustion chamber and radiator including nipples engaging the aligned openings aforesaid, a closure for one of said nipples, said radiator being also provided in substantial alignment with the other of said nipples with an outlet for the products of combustion, and

" means within the radiator between the last mentioned nipple and outlet causing products of combustiondischarged'from the said nipple to travel longitudinally of'the radiator from the last mentioned nipple to the outlet before being discharged therefrom,

4. vA furnace having a combustion chamber provided at "substantially diametrically opposite points with openings, a'radiator encircling the combustion chamber and having openings at substantially diametrically opposite points thereof in substantial alignment withthe openings in thecombustion chamber, and connections between said radiator and'chamber including nipples engaging the ber provided at substantially diametrically opposite points thereof with openings, a radiator encircling the chamber and having openings in substantial alignment with the openings aforesaid, and connections between said combustion chamber and radiator including nipples extending through the aligned'openings aforesaid, one of said nipples having a portion bearing against an edge of one opening in the chamber and having another portion bearing against an edge of one opening in the radiator, and the other nipple having relatively adjustable parts provided with flanges for engagement with portions of the chamber and radiator respectively, the arrangement being such that when one of said parts is adjusted relative to the other the flanges of said parts will be forced tightly against portions of the radiator and chamber and the portions aforesaid of the first mentioned nipple will be maintained in tight engagement with the edges aforesaid of the chamber and radiator.

6. A furnace having a combustion chamber provided at substantially diametrically opposite poi-n s with substantially aligned circuiar portions, a radiator upon the outer side of the combustion chamber and having circular portions in substantial alignment with engagement with the ali ed circular ortions aforesaid of the rachator and cham r.

7. A furnace having a combustion chamber, a racliator surrounding saiol chamber, and connections hetween said chamber and radiator including means at substantially diametrically opposite points of said chamber ancl radiator for conducting products of comlit) hustion from the chamber into the radiator, one of said means including relatively adjustahle parts provided with means for en'- gagement with the chamber and radiator and aclapteol upon adjustment to shift the radiator substantially horizontally relative to the chamber and cause the connections between the means, combustion chamber and radiator to he tight.

ln testimony whereof I aflix my signature.

EARNEST L. WATSON.

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