US1543112A - Heating furnace - Google Patents

Description

June 23, 1925.

Fil ed Oct Fig.2

3 SheetslwSheep 2- BYW 8.35m

ATTORNEY.

,J. M. LAUBE HEATING FURNACE;

Filed QJQM 35%., 1:922 s Sheets-Sheet 5 I IN VEN TOR.

A TTORNEY.

p at 10, 10, and the furnace bottom wall platevjoint well adapted for factory madegoods- Patented June 23, 1925.

UNITED STATES" 1,543,112. 1P, A OFFICE,

:rosnrn m. LAUBE, or BELLINGHAM; WASHINGTON.

HEATING FURNACE.

Application filed October 30, 1922 fSerial'No. 597,929.

To all whom it may concern:

Be it known that I, JOSEPH M. LAUnn, a

citizen of the United States, and a resident trated in the three sheetsof accompany" ing drawings in'lwhich Figure 1 is a front elevation of a pipeless, hot-airjfurna'ce em-.v

bodying my improvements. Fig. 2 is a side elevation of Fig. 1 partly in section on a vertical medial plane. Fig. 3 is a frontelevation ofthe humidifying device drawn on a larger scale. Fig. 4 i'sa side elevation of Fig. 3 partly in section on a medial vertical plane. Fig. 5 is a side elevation of the front end of the fire potand ash pit partly broken away and drawn on a larger scale. Fig. 6 is an elevation view in verticalsection of one of the exterior-wall plate, air-tight joints drawn on a larger scale. Fig. 7-is acbottom plan view of Fig. 6. Fig. 8 is a horizontal section of one of the corner joints of the exterior walls drawn on a larger scale.

Similar characters refer to similar parts throughout. Certain parts are broken away to show other parts hidden thereby.

The term air-tight as used throughout this specification is properly applicable under the difference of pressure pertaining between the inner and outersides of the exterior walls of heating furnaces.

' More particularly: My furnace is preferably of rectangular horizontal cross section. As illustrated, the front wall is 'at V8, the rear wall at 9, and the exterior side walls at 11. The top of the furnace is drawn'in to form a truncated pyramid the outer walls of which are indicated by 12, and on top of this, rests grating 13 which is usually flush with thetop floor surface of'the room, to be heated. The stove bolts used to fasten.

the several parts of the walls together are trate my method of making an airtight which are to be shipped in knocked-down shape. Figs. 6 and? show a joint used to connect the edges of the horizontal seam between the bottom-and top parts of side plates 10. Thelower edge of the upper plate is bent outward atright angles, then it is bent upward at 6 at an angle of about 30, then downward at 0 to enclose an angle of about then its edge is folded, over inwardly at al The upper edge of the lower plate is bent outward at an angleof 90 and its edge bent upward at 6 at an angle of about 10 to lie in angle 0 The edges of the plates lOa-re set together to bring them in the same plane and a row of spaced, registering bolt holes made through their adjacent edges. Round asbestos wicking 15 is placed in angle 0 beneath edge e and the joint is sealed thereby when bolts 14 tightly clamp the twoedges together. It is readily understood-that this joint is easily formed on a tinners brake in plates suit-, ably heavy forthe purpose intended. Also the plates to be joined by these connections. are readily assembled at the place of'instal lation. The air-tight joint used for making the plate connections at the vertical corners between front and back and side plates is shown in Fig. 8 in horizontal section. This illustration will require nofurther explanation because 1 of its similarity to the :one above described. The joint shown in Fig. 8 is-also adapted for join ng bottom plate 11 and front, back and side plates, 8,9, 10 and '10, respectively. Also the joint shown in Figs. .6 and 7 is suited for connecting said front, back and side plates withfurnace top 12- by a slight change inthe angularity. The corners of furnace top 12 are look joints of usual construction. Within said top at its upper end is centrally placed short, hollow cylinder 6 which is joined with a locked seam with the top of a downwardly flaring connection 16, a, the opposite sides 0, of which are riveted along their lower edge tightly to the front and rear sides of top 12 near theirlower edge, and flaring sides 16 are joined along their lower edges'to the upper edge of inner wall plates18, 18, leaving cold air flues 17 17 between saidflaring connection andthe side walls oftopv 12. Inner side walls 18, 18, asstated, are connected along their upper. edges withthe lower edges of the sides of flaring connec tion 16, 16 and extend downward to within abQYl? 999 f o ef furnace bottom. 1;- The her or hot-airflue of the furnace.

openings in said door.

vertical edges of said inner walls are bent over at right angles and the edges thus turned are bolted to front and rear plates 8 and 9 at a distance from side plates lO'to' form the lower part of cold air fines 17, 17. The space between said inner walls 18, 18 and front and rear outer walls 8 and 9 together with the space enclosed by connection 16, a and ring I) is the central cham- The fure nace front is shown at 20 having ash-pit door 21 and fire-box door 22 hinged thereon. Draft door'a is hinged along its upper edge to ash-pit door 21 and covers a draft opening through said door. Check draft damper a is'pivoted to the front of door 22 and controls the admission of air through Shield 23 having triangular sides a, a is fastened to the inside wall of fire-box'door 22. and not only protects said door from the furnace heat, but causes air, passing through door 22, to first cool shield 23 and then pass from behind the shield below its bottom and enter the fire potclose to the fuel within the same and pass rearward over the top of said fuel providing oxygen for a slow combustion the ashes from whichwill aid in covering said fuel to aid in checking said burning. Furnace front 20 is bolted to the flange a, of fire box 29 and ash pit30 and to front plate 8 of the furnace with asbestos gasket 81 between said furnace wall and said flange. This closure seals the 'joint between said wall 8 and flange a against the passage of air. Front plate 24 of water pan25 extends as a flange beyond said pan and is bolted to front furnace plate 8 with asbestos gasket 28 between to seal the joint against the passage of air. Funnel 26' has pi'p'e nipple 27 welded to its rear wall near its bot-- tom and this pipe enters a hole through plate 24 into pan 25 near its bottom. A gasketis placed between funnel '26 and plate 24 and between said plate and the nut of nipple 27 and around said nipple to cause a' Watertight connection and joint around said pipe where'it passes through plate 24:. A cover a? is" fitted over the top of funnel 26. A small quantity of water in panes is sufficient to stand above pipe27 and seal the connection between saidfunnel and pan against the passage of air therethrough. Firebox 29, when for a wood burning furna ce is preferably cylindrical and placed horizontally in thecentralfurnace chamber near itsbottom. Ash pit 30 is welded to fire box 29' and its side walls are extended to formthe neck of fire box 29 at 5 and fiangedat a for clamping to furnace front 20 as described above. Wall 0 provides a partition between neck 5 and ashpit 30. 31 is' the asbestos gasket between flange a and-front wall 8 as described above. Return flue radiator 32 is preferably a hollow cylinderand placed in aliorizont'al position When properly done this joint is tight against the passage of air under the pressures existing. Nipple 38 is closed by cover a. Smoke pipe nipple 34Lis welded to the rear' end of radiator 32 and protrudes throughrear wall 9 with which it makes an air tight closure by means of curved flange 6 fine connection between. the firepot and the radiator as described. Two sets of brackets 37 are fastened to opposite sides of the interior walls of'radiator32. On each set:

of said brackets is placed horizontally one of radiator damperside plates or slideway plates38. Saidplates preferably have pins 39 which'engagefin holes 'in brackets 37.

Plates 38 'are"narrow and serve as slideways Each has a rib a 'on' ts upper side'andfacmg edge and on these;

for the damper.

ribs ismounted damper 40-. Side plates are substantially as long as the radiator;

But damper' lO is' shortertha'n said radiator by the width of the opening desired for the passage" of smoke through the radiator. Saiddamper 40 is reciprocable" longitudinally on its slidewaysand itsfp'osition in the radiator determines the course of the smoke through the radiator; If the damper is close to th'e' front' end of the radiator; the smoke passes directlytln'ough the rear end of the radiator into the stack; if the damper is close to the rear of the radiator, the smoke must pass horizontally through'the lower half of the radiator beneath theside' plates 3'8and damper 40 to the front endof the radiator where'it rises past the front'end of the damper and then passes rearward'above' the damper and side plates and into said stack; and if the'damper' occupies a medial position lengthwise of the radiator, said smoke divides and passes over both of said The damper 40 is shown in full lines in Fig. 2 in its rear position and in paths.

dotted'linesatetO in its forward position.

In" a holethrough dainper'tO is engaged hook 42 of damper rod 41, and said damper rod is mounted in a 'hole'throi'igh nipple cover a andhas handled exterior to said cover. Damper 40 is settable inany desired position within its-range of movement in theradiator by means of rod 41. When desired damper 40 can be removedfrom Nipples 35 and 36 join to provide a radiator 32 by removing cover a, and withdrawing said damper, then, if'desired, rod 41 can be disengaged from the damper at hook 42. Also each of damper plates 38 can be removed by hand through nipple 33. When thus cleared radiator 32 can easily be cleaned with a proper utensil by shoving the accumulated ashes and soot backward to fall into the firebox through nipples i and 36, and, if said damper and side plates are worn out, their replacement with new ones is easily accomplished, An opening is placed in each of side walls 10 near the bottom through which dust can be removed from the furnace floor. These openings are reinforced on the interior of said side walls 10 by frames 44 which have tapped holes for clamping screws to retain covers 43 in place on gaskets 45. In this manner an air-tight closure is provided for these lower clean-out holes not diflicult to remove and replace.

My sectional damper plate made of substantial dimensions and material with its sliding-section and easy-removable features has been found to beta good solution for this dificult part of the furnace design.

Having thus disclosed my invention, what I claim as new and desire to secure by Letters Patent is, p

1. In a heating furnace in combination, a combustion chamber, a radiator chamber above said combustion chamber the lower rear part of which has flue connection with said combustion chamber and the rear upper part of which has flue connection with a smoke pipe and having a clean-out opening in its front wall, a removable cap having a small hole therethrough over said clean-out opening, two damper slideways removably mounted on the interiorwalls of said radi-v ator to extend in slideway relation from the front to the rear thereof and located midway between the bottom and top thereof and adapted for installation and removal through said clean-out opening, a damper shorter than said radiator mounted therein for reciprocation onsaid damper slideways and adapted to pass through said clean-out opening for installation and removal, and a damper rod connected to said damper and mounted for reciprocation in said hole in said clean-out-opening cap.

2. In a heating furnace in combination, a radiator, chamber the lower rear part of which has a flue connection with the combustion chamber of said furnace and the rear upper part of which has a flue connection with a smoke pipe and also having a cleanout opening in its front wall, a removable cap over said clean-out opening, removable damper slideways mounted on the inner radiator.

JOSEPH M. LAUBE.

'ciprocate said'damper from outside said u

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