US95551A - William allchin - Google Patents

Description

idtrd WILLIAM ALLCH'IN, or NEWBURG, NEW YORK.

Latas Paten: Nq. 95,551, dated caoba 5, 1869.

sTovE-DRUM. I'

The Schedule referred to in these Letters Patent and making part of the same. v

To .all whom it may concern Be it known that I, VrLLIAM ALLCHIN, of Newburg, in the county of Orange, and State of New York, have invented anew and useful Improvement in Hot- Air Drums or Super-heaters, of which the following is afull, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in which- 4Figure l represents a vertical longitudinal section of a hot-air drum or superheater constructed in accordance with my improvement;

Figure '2, a horizontal section of the same, taken as indicated bythe line x x in iig. 1; and

Figure 3, a vertical section 'through the line z z.

Figure 4 is a View, in perspective, of'k a portion or section of the pipe or tubular-passage through which the smoke or escaping products of combustion pass in their way through the drum.

Similar letters oi' reference indicate corresponding parts.

This' improvement relates to apparatus which may either be used for Ventilating o r superheating-purposes, for heating air by the products ot' combustion as the same escapes from a stove, furnace, oven, range, or other like structure.

The improvement is similar, so far as regards its general principle of action, to the hot-air drum described in Letters Patent, No. 85,554, of the United States, issued tome January 5, 1869, and in which a drum of flattened construction is used, fitted internally, so as to form three tortuous or zigzag channels np through it, and theinner one of which serves to conduct the escaping products of combustion, while the two outer ones are ipassages for air, which, entering the drum,- in a cold or comparativly cool state, at or near its bottom, becomes heated by the plate or partitions vwithin or between which ,the smoke and escaping products of combustion4 are passed, and made to circulate or flow in like directions to and simultaneously with the passage of the air to be heated on the exterior of opposite sides of such smoke-flue or passage.

This invention, however, differs from'such previous improvement in a novel construction of the interior smoke-pipe or line, by making it of elbows of a dat oval form, fitted together as ordinary stovepipe is fitted, and closely arranging the same within a-drum or case of a'atteued character, but that may have rounded ends, and which is provded or fitted with horizontal partitions that serve, in concert with the elbows, to direct the air to be heated.

Referring to the accompanying drawing- A represents the interior smoke-flue of the drum, which may connect at its bottom, in any proper manner, With a stove, furnace, ov'en, range, or other like structure, for carrying oii.' the escaping products of combustion therefrom to the smoke-stack or outlet.

This smoke-flue A is made lip ofa series of elbows, a a c, of a flattened oval form, tted together as stove-pipes are usually joined or fitted, and forming a continuons crooked-or zigzag pipe, running up through an outer sheet-iron or other met-al case, B, and extending across the latter, so that the sides of said case touch the. narrower sides ofthe elbows.

The outer case B, which in its general contour is of a flat shape, may be made up ot' side, end and top plates, suitable 'secured or held together,l or its body may b e composed of sheet-metal, bent to the required forni, and so as to give toits ends a rounded character, andthe one or both of said ends fitted with orconstructed to forni a lid or door, C, while the lower edge of the body is made to tit witlii-n a base, D, of open or flange-like construction, and its top covered by a cap, E, having escape-opening oigoutletsb. b and c, for the heated air and smoke.

I Arranged toproject from the ends .of the case B to a`suitable distance Within the crooks or bends ot' the' smoke-fine A, so as to form, in connection with the elany suitable manuel'.

supposing the structure to be arranged so that the smoke-tine A connects at its bottom with the smoke# pipe or outlet ot' a stove, while the base D is open to a wall in air-space surrounding said stove, which is the arrangement it is generally designed to adopt, then the drum acts as a super-heater, the partially heated air passing from said space in a tortuous or zigzag man ner up the passages F F, through the drum, on both or opposite sides of the elbows, while the escaping pro'- ducts of combustion make a similar travel up the tlnr. A, causing the air escaping' at the loutlets b b to be superheated. v

The sides of the case B should t close up against the narrower edges ofthe elbows a t c, so that no air will pass.by them directly through the case to the outlets, but all air admitted below be forced to travel along the passages F F. f

The construction ofthe smoke-fine A, as described, by making it of elbows, not only atords increased facility for putting the structure together, but in giving to said elbows an elliptical shape, which secures to the drum a more proportionate appearance,and reduces .its height, a wide and iiat surface or enlarged area is given to the smoke-flue, for heatingr o r snperheating the airin the passages F F without imparting or losing heat through the outer case by direct exposure ofthe products ot' combustion to contact with the sides of' the case.

To clean outA the smoke-due A, 'whether made ot' oval or other shape in its transverse section, I provide the sides of the elbows a a a, at the end or ends of the horizontal courses of the smoke-Hue, and facing the door in the end of the case, with Scrapers H H, which may be made by riveting a piece of sheet-metal, e, on to a short piece of iron tube, j, arranged to project through an aperture in the elbow from the inside, and having an outside and inside thread cut upon it, so that when not requredto use the device as a scraper it forms a plug, to 'revgnt the egress of smoke or gas, and may be secur d by a nut, g, made to screw on to the outside of the tube j, while, when it is required to work the device as a scraper, a rod, 7i, may be connected with thetube by screwingrit into the inner thread thereof so that on slacking the nut g, and allowing it to XVM. ALLCHIN.

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