US1228289A - Gas-heater. - Google Patents

Description

H. K. BOYD.

GAS HEATER.

APPLICATION FILED IuLv I4. |916.

Patented May 29, 1917.

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H. K. BOYD.

GAS HEATER.

1,228,289 APPLICATION FILED 1ULY14, 1916. 29,

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WxTNEssEs ATTORNEY UNITED STATES PATENT OFFICE.

HAMILTON K. BOYD, PITTSBURGH, PENNSYLVANIA, ASSIGNOR 0F ONE-HALF TO ERNEST H. OI-ILENDORF, OF MIIVIS, FLORIDA.

GAS-HEATER.

To all whom it may concern:

Be it known that I, HAMILTON K. BOYD, a citizen of the United States, residing at 32 .East General Robinson street, Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Gas-Heater, of which the followingis a specification.

The present invention relates to an improvement in gas heaters designed to be used to heat cold air and discharge. the

heated air into the same room in which thel heater is located, the room being thereby heated by the air as well asrby the heat' directly radiated from the heater.

It is the object of the present invention to provide among other features a `heater which is constructed 0f a number of detachably connected plates, peculiarly arranged to provide large heat radiating surfaces and an air flue to protect the plates, and in which is heated a large volumeof air; also a heater wherein the flame `will not roar when the gas is admitted under full pressure to the burner and which is highly efficient consuming substantiallyk one-third less fuelthan prior heaters; and which requires practically no attention after the burner is lighted. f

Other objects and advantages of'this invention will be brought out in the follow'- ing specific description of the presentpreferred embodiment, thesaine being illustrated in the accompanying drawings, wherein- Figure 1 is a front elevation of a gas "heater constructed accordingto'this invention.

Fig. 2 is a vertical transverse section, taken through the same.

Fig. 3 is a top plan view ofthe gas heater, the top being removed.

Fig. l1 is a horizontal section, taken on the line 4--4 of Fig. 2. i

Fig. 5 is a detail perspective view of the upper deflecting plate. t

Fig. 6 is a detailperspective view of the lower deflecting plate.

The heater of this invention is preferably made up of a plurality of plates or sheets, which are detachably secured together to permit the renewal of the sheets or plates when burnt out, and to permit the ready cleansing of the interior of the heater.

Specification of Letters Patent.

Patented May 29, 1917.

Application filed July 14, 1916. Serial No. 109,313.

10 are the side plates, which extend upwardly at the opposite sides vof the heater, and which are of a width equal to the depth of the heater. The forward and rear edges of the side plates 10 are rolled over inwardly toward each other, to provide locking beads or flanges 11. 12 and 13 are up per and lower bottom plates, respectively, which are vertically spaced apart between the lower ends of the side plates 10, and are secured thereto by means of flanges 14 and 15 turned downwardly from the opposite ends of the bottom plates 12 and 13. The upper bottom plate 12 extends rearwardly from the forward edges of the side plates 10, and is inclined fupwardly at a slight angle, as shown in Fig. 2. This bottom plate 12 terminates short of the rear edges of the side plates 10, and'is' rolled upwardly and over at its rear edge toprovide a locking bead 16. The forward edge of the upper bottom plate 12 has a downturned flange 17 adapted to fit against the inner side of a lower front plate 18, which extends across the front of the heater atthe bottom thereof. The opposite ends of the front plate 18 are Vrolled over for engagement in the lower ends of the front locking beads 11 of the side plates 10. The upper edge of the front plate 18 is preferably bent inwardly to overlap the forward edge of the upper bottom plate 12, and the flange 17is suitably secured to the front plate 18.

The lower bottom plate 13 extends from the rear edges of the side plates 10, forwardly and downwardly, and terminates short of the forward edges of the plates 10 to provide, behind the front plate 18, a bottom passage or opening through which air may pass or circulate fromV beneath the stove. The bottom plates l2 and 13 provide a substantiallyvhorizontal air duct or flue A in the bottom of the heater. A back plate 19 has its opposite edges rolled over for interlocking engagement with the rear locking beads 11 of the side plates. The back plate 19 extends from the top to the bottom of the stove, and is preferably provided, near its upper end, with an outwardly extending nipple 2O to which may be attached a conducting pipe for carrying ofll the products of combustionfrom the heater.

A second back or lire plate 21 is arranged in forwardly spaced relation to the back plate 19, and has its lower edge rolled over for interlocking engagement in the bead 16 of the upper bottom plate 12. This second back plate rises from the rear end of the bottom plate 12, and is inclined forwardly at a slight angle. The back plates 19 and 21 provide a vertical air duct or passage B, which is a continuation of the passage in the bottom of the heater. The second back plate 21 is rolled over at its upper edge to provide a locking bead 22.

rlhe stove is provided with a pair of spaced apart, forwardly and upwardly extending, deflecting plates 23, and 24. The lower deflecting plate 23, shown in detail in F ig. 6, has its lower edge rolled over and interloclred with the bead 22 of the back plate 21, and comprises substantially a continuation of the back plate. rlhe deflecting plate 23 has flanges 25 at its opposite ends, which are secured against the inner faces of the sides 10. The upper forward end of the plate 23 has a depending flange 26, which is secured against the inner side of an upper front plate 27, the latter having its opposite ends rolled over and interlocked with the front beads 11 of the side plates. The lower deflecting plate 23 has its opposite forward corners cut away to provide passages 28 immediately behind the front plate 27, and at the opposite sides or ends of the heater.

The upper deflecting plate 24, shown in detail in Fig. 5, has an upturned flange 29 on its rear end, which is secured against the back plate 19. The upper deflecting plate 24 has its opposite lateral edges converging forwardly, and has, at its forward end, an upturned flange 30, which is secured against the rear side of the front plate 27. The opposite converging edges of the deflecting plate 24 have depending flanges 31, which extend downwardly to, and rest at their lower edges upon, the upper face of the lower deflecting plate 23. Outturned flanges 32 extend along the lower edges of the flanges 31, and are adapted for securement upon the upper face of the lower deflecting plate 23. The flanges 32 have notches 33, as shown in Figs. 3 and 5, to register with the passages 28 in the plate 23. lThe lateral flanges 31 lie flat against the side plates 10 at the rear end of the deflecting plate 24, and are cut away at their lower edges, to accommodate the locking bead 22 of the second back plate 21.

The front plate 27 is provided with an outlet opening D therethrough, which registers with the duct or passage C between the deflecting plates 23 and 24, permitting air, rising through the duct, to pass 'out throughl the front of the heater. A reinforcing plate 34, of any adaptable design and size, is suitably secured against the front plate 27, and has an opening therein which registers with the outlet opening in the front plate.

A 'baffle plate 35, is placed, substantially vertically, in the heating chamber, formed in the upper end of the shell above the deflector plate 24. This baille plate 35 terminates, at its lower end, in spaced relation from the deflecting plate 24, to provide a passage about the lower end of the baflle plate through which the products of combustion may pass as they are carriedv to the outlet nipple 20. This baffle plate 35 is provided at its opposite ends with flanges 36, secured against the inner faces of the sides 10. A top 37 is fitted over the shell, and has its marginal edge overturned beneath the top, and projected downwardly to provide an inwardly o'set flange 38, which eX- tends into the shell and lies against the inner faces of the adjacent plates. As shown, the flange 38 is provided with a plurality of slots 39, which open through the lower edge .of the flange, and which are adapted to receive therein clamping bolts, or the like, to detachably hold the top in position.

The anges of the various plates are preferably held in place by nuts and bolts, so that the plates may be separated when it is desired to renew them, and to permit the easy assemblage of the parts in setting up the heater. V

A burner tube 40 extends longitudinally through the heater preferably over the inner end of the upper bottom plate 12. The tube 40 has a row of gas outlet openings 41 in its upper side, through which the gas may issue. The upper bottom plate 12is provided with a row of air inlet openings 42, arranged preferably immediately behind the burner tube 40, and at the base of the forward or second back plate 21. Air passes from the bottom air duct A up through the openings 42, and promotes the thorough combustion of the gas which issues from the burner tube.

Legs 43, or the like, are detachably secured to the lower corners of the shell, to support it in spaced relation from the floor or ground, and permit a circulation of the air upwardly through the duct.

when the burner is lighted, the same plays against the back or fire plate 21, and the deflecting plate 23. Air is drawn upwardly through the air duct A leading through the bottom of the shell, upwardly in the duct B between the backs of the shell, and further upwardly and forwardly in the duct C between the deflecting plates 23 and 24, the air being heated by contact with the bottom plate 12, the back plate 21, and the upper deflecting plates 23 and 24. This heated air passes outwardly through the opening l) ofthe upper front plate 27 into the room to be heated. The products of combustion are thoroughly burned by the admixture of air therewith, which passes upwardly throughY the openings 42 behind the burner tube 40. The products o combustion pass upwardlyv against the deflecting plate 23, are caught behind the `front plate 27and pass through the passages 28 iplttlilthe heating chamber'at the top of the S e i y The baliie plate'35 traps the products of combustion in thisheating chamber, and thus obtains the benefit of practically all of the heatunits forhea'ting the walls of the chamber. The upper detlecting plate24 is,

in this manner, maintained at a high temperature, while 'the heat from the combustion chamber heats the bottom plate 12, the back plate 21 and the lower deflecting plate 23, and the air in the duct is thoroughly heated in its passage upwardly through the heater. The heat in the combustion chamber is deflected outwardly, through the open front of the shell, by the plates 12, 21 and 23.

The second back plate 21 may be provided with a layer of asbestos, or the like, and the sides 10, the bottom l2, and the deflecting plate 23 may be covered with a layer of copper, as shown in the drawings. The bame plate 35 may be provided with openings 44, (Fig. 8) which are out of line with the outlet nipple 20, to provide a circuitous path Jfor the products of combustion, and thus prevent the easy low of the same outwardly through the shell. By thus trapping thev products of combustion the walls of the heating chamber in the top of the shell are thoroughly heated.

1. A gas heater comprising a shell formed of side plates, a top plate and a back plate connected to the top and side plates, an upwardly inclined deiiecting plate connected to the back plate and the side plates below the top plate, and a front plate connected to the upper end of the delecting plate thereby forming a heating chamber which is dened by the back, front, top and detlecting plates, said back plate having an opening near the top, a baie plate depending from the top plate and arranged to eX- tend below the opening of the back plate, a second back plate and a second delecting plate each spaced from 'the rst mentioned back plate and deflecting plate to provide an air duct which is open at the bottom for the ingress of cold air, and a burner arranged in front of the second mentioned back plate, the deecting plates having registering passages formed therein at the top for the products of combustion to reach the heating chamber without escaping into the air duct.

2. A gas heater comprising an open front shell composed of side walls, a back wall joining the side walls, a bottom plate inclined downwardly from the back wall and terminating short of the front edges yof the 'air duct in the bottom of the heater, and terminating short of said back wall, a back plate rising from the rear end of the second mentioned bottom plate and spaced from the back plate to provide a continuation of the air duct at 'the back of the heater, a second upwardly inclined delecting plate spaced below the first deflecting plate to provide therewith the upper end of the air duct, a front plate to which the said deflecting plates are connected, said front plate having an opening inline with the air duct, and a burner in the combustion chamber, said deflecting plates having passages therethrough leading from the top of the ombustion chamber to the heating cham- 3. A gas heater having side plates, a back plate joining the rear edges of the side plates, upper and lower front plates connecting the forward edges of the side plates, spaced apart and overlapping bottom plates of less width than the side plates and arranged between the side plates and extending one from the back plate and. one from the lower front plate and providing therebetween an air duct in the bottom of the heater, a second back plate rising from the inner end of the upper bottom plate and in spaced relation to the first mentioned back plate to provide a vertical continuation of the air duct in the back of the heater, a pair oi spaced apart deliector plates inclining upwardly and 'forwardly from the back plates to provide an upper continuation of the air duct, the upper front plate having an opening in alinement with the upper end of the duct formed between the deflecting plates, and a burner arranged above the upper bottom plate, and close to the second back plate.

4. A gas heater comprising a shell having an' outlet in its back, an open front combustion chamber arranged within the shell, said shell and said combustion chamber having opposed and spaced apart bottom plates, back plates and top defiecting plates to provide van air duct therethrough extending along the-bottom and about the combustion chamber and opening thereabove through the front of the shell, the upper detlecting plate forming the bottom of a heating chamber in the top of the shell opening through said outlet, both of the de- #lectin-g plates having a passage .therethrough ,at the front `connecting the combustion chamber withvthe heating chamber, a burner in .the combustion chamber at the lower end `thereof and at the rear, the 11pper of said bottom plates being provided with a series of openings between sai-id burner and 'the inner one of said back plates whereby air is admitted to said burner from L() said air duet, and means for delecting' the heated yproducts yof combustion along the top .of the upper deeeting plate. y

In testimony, that I claim the lforegoing afs own, I have hereto aflixed my sign-ature in the presence of two witnesses.

HAMiLTON K. BOYD.A

Witnesses:

JOHN B. MCBRIDE,A R. E. ANDERSON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Y Washington, D. G.

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