US2110060A - Fireplace construction - Google Patents

Description

March 1, 1938. D. CAGE I FIREPLACE CONSTRUCTION Filed July 9, 1935 Daryl Gaye,

Patented Mar. 1, 1938 STATES rarer orrice 2,110,0o marches ooNs'raUcrroN Darcy L. Cage, Los Angeles, Calif.

Application July- 9, 1935, Serial No. 30,545 2 Claims. (or. 126121) This invention relates to fireplace constructions, and an important object of the invention is to provide an improved air'heating device for fireplaces which is simple and durable in construction and exceedingly efiicient in use.

With the above general object in view, and,

7 others that will become apparent as the nature of the invention is betterunderstood, the present invention consists in the novel features and construction hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing:

Figure 1 is a front elevational view of a fire place construction provided with an air heater constructed in accordance with the present invention.

Figure 2 is an enlarged vertical section on line 22 of Figure 1.

Figure 3 is an enlarged horizontal section on line 3-3 of-Figure 1.

Referring in detail to Figures 1 to 3 inclusive, there is shown a brick fireplace including a rear wall 6, relatively thick sides I, a bottom 8, a top 9, and a partial front wall Ill depending for a.

short distance from the top 9 so as to form the usual fire space or open front recess H in the lower portion of the fireplace structure and a chamber at the top of the-fireplace structure which is closed at the front and aifords communication between the fire space and the lower end of the vertical chimney l2. The lower portion of the rear wall 6 has the usual vertical front surface, while the upper portion of said rear wall has a front surface which slants upwardly and forwardly in the usual way as shownclearly in Figure2. A shallow recess is provided in the front surfaces of thelower and upper portions of the rear wall 6 and in the inner surfaces of the side walls I as shown in Figures 2 and 3 to provide an expansion space for a purpose which will later becomeapparent. An ash pit I l is constructed beneath the bottom of the fireplace, and the bottom wall of the latter is provided with an opening is affording communication between the bottom of the fireplace and such ashpit. This opening I5 is controlled by a suitable ash dump device.

The present invention includes an air heater consisting of a unitary sheet metalstructure having a hollow horizontal or transverse upper front portion l6 adapted to fit within the front portion of the upper chamber or space of the fireplace directly beneath the top 9 and behind posed of hollow rear and side members I! and i8 respectively which are closed at the bottom and. communicate with each other, the hollow side members I8 communicating at their upper ends with the ends of the hollow upper front portion I6 through upwardly converging hollow side connecting portions l9. The top of the back member l1 terminates below and in spaced relation to the inclined bottom wall of the upper front portion iii to provide a throat 20 between the top of the rear member H, the rear of the upper front portion l6 and the side connecting portions I 9, for thepassage of smoke from the fire space H to the chimney l2. The rear wall of the upper front portion is and the top of the rear member I! are parallel and inclined rearwardly and upward- 1y so that the threat is correspondingly inclined for unobstructed passage of the smoke from the fire space to the chimney. The unitary sheet metal heater structure further embodies a plurality of spaced upwardly and forwardly inclined fiues 2| providing communication between the top of the hollow rear member I! and the rear of the hollow upper front portion I B, and between which the smoke and products of combustion from the fire space are adapted to pass in flowing to the chimney. As shown clearly in Figure I fireplace, and the rear member I l is-adapted to fit against the front surface of the rear wall 6 of the fireplace above the recess l3. The recess l3 thus forms an expansion space which permits rearward expansion of the outer walls of the major portions of the rear and side heater members H and I8 when they become highly heated. This effectively avoids serious rupture of the masonry and distortion of the heater.

The present invention provides means for preventing dlstortion and forward buckling of the inner walls of the hollow rear and side members IT and I8 of the heater. For this purpose, angle irons 22 are welded along the corners formed at the junctures of the inner walls of said rear and side members 11 and i8, and suitable spaced parallel reinforcing bars 23 and 24 are welded to the front and rear surfaces of the vertical lower portion of the inner wall of rear member l1. Also, the inner wall of the rear member I1 is reinforced at the juncture of its vertical lower portion with its forwardly and upwardly inclined upper portion by means of a transversely arranged contact the inner wall of rearmember ill at spaced points and at the longitudinal edges of said strip 25, which longitudinal edges are welded to the inner wall of rear member l7. combination of these three reinforcing means, the inner walls of the rear and'side members I7 and I8 are effectively braced against distortion and forward buckling under the influence of heat. As illustrated, cold air inlet flues 26 may be formed in the sides I of the fireplace near the front of the latter, for the purpose of permitting passage of cold-air from the lower portion of the room into the lower portion of the heater, the hollow side members l8 of the lower portion of the heater being provided with openings 21 registering with the fiues 26. Also, a suitable horizontally elongated hot air outlet opening 28 may be provided in the partial front wall III of the fireplace in registry with a similar opening in the front wall of the upper front portion 56 of the heater, for direct'passage of heated air into the room. The cold airinlet fiues 26 and the hot air outlet flue 28 may be provided with suitable registers including frames 29 set in the fines and covered by ornamental gratings 30 in the front portion l6 of the heater.

A damper is provided for the smoke flue or throat 20 of the heater, said damper comprising a closure plate 33 hinged in the sides of the upper thereof.

rear portion of flue or throat 20 at 34 and adapted to extend across and completely close said flue or throat 20 when swung forwardly and downwardly. Welded to a part of the heater at the of a link 38; A nut 39 is threaded on the bolt 36 and affords means whereby frictional engagement may be set up between the sides of lever 31 and the adjacent sides of washers placed between the arms and lever 31 on bolt 35. In

By the this way, the lever 31 will be frictionally maintained in any position to which it is swung or adjusted about the pivot'bolt 3t, thus insuring retention of damper 33 in any desired adjusted position. The lower end of lever 31 has an aperture M in which apoker or the like may be engaged for conveniently actuating and regulating the damper 33.

From the foregoing description, it is believed that the construction and advantages of the wardly inclined upper portion of the inner wall of said hollow rear member, said reinforcing strip being transversely arched rearwardly to only contact said inner wall of the rear member at spaced points and at opposite sides of said junc-- ture along the longitudinal edges of said'strip,

said longitudinal edges of the stri'pbeing secured to said inner wall of the rear member, andvertical reinforcing angle bars secured at correlower'portion of the inner wall of said rear member.

2. An air heater for fireplaces including a sheet metal hollow rear member having a vertical lower portion and a forwardly inclined upper portion, a transversely arranged elongated reinforcing strip arranged rearwardly of and at tiiejunci present invention will be readily understood and. 1

' spondingpoints and in spaced parallel relation to the front and rear surfaces of the vertical ture of the vertical lower portion and the forwardly inclined upper portion of the inner ,wallof said hollow rear member, said reinforcing strip being transversely arched rearwardly to only contact said inner wall of the rear member at spaced points and atopposite sides of said Juneture along the longitudinal edges of said strip, said longitudinal edges of the strip being secured to said inner wall of the rear member, and vertical reinforcing angle bars secured in spaced parallel relation to the front surface of the vertical lower portion of the inner wall'of said rear member.

DARCY L. CAGE.

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