US167631A - Improvement in hot-air furnaces - Google Patents

Description

2 Shcets--She etl N. TOYE, Hot Air Furnace. No. 167,631, Patented Sept.14, I875.

N- PETERS, PHOTO-LITHOGRAPHEH. WASHINGTON, D C.

2 Sheets--Sheet2.

N. TOYE. -....Hot.,Air Furnace.

N0, l67,63\, Patented Sept.14,1875.

(/ (I St [men 6 or UNITED STATES.

PATENT OFFICE.

NAPOLEON TOYE, OF OOVINGTON, KENTUCKY.

IMPROVEMYEINT IN HOT-AIR FURNACES..

. Specification forming part of Letters Patent No. 167,631, dated September 14, 1875; application filed April 13, 1875. 1

bining a new combination of parts for. consuming the smoke. Y

My improvements for the consumption of the smoke-that is, the dark and white vapors generated during combustion consists in the arrangement of a perforated plate in connection with the bridge wall of the furnace, in such a manner that air admitted at the front of the furnace shall pass over the fire, and .pass partly over and partly through this plate, and pass thence down between said plate and bridge-wall into the bed of the fire, where the oxygen of this now heated air unites with the volatile vapors generated from the fuel, and by the aid of the intense heat thereat they are'ignited and consumed.

The second part of my invention consists in making the sides of the furnace incline outward from the highest point at which the fuel is to be placed therein down as far as the grate-bars, so that as the fuel is consumed and settles, a space shall be left between the side of the furnace and the fuel, whereby the side of the furnace is kept free fromclinker, and said space forms a burning-surface, air being admitted to said space from a suitable source, preferably the ash-pit.

In the accompanying drawings forming part of this specification, Figure 1, Sheet 1, represents a vertical-central longitudinal section of a furnace, embodying my improvements. Fig. 2, Sheet 2, represents a vertical transverse section of the same furnace, taken at the line X Y, Fig. l; and Fig. 3, Sheet 2, represents a vertical transverse section of the same furnace, taken at the line a b, Fig. 1.

The furnace A is provided with walls B, preferably of brick. There are at the front 0 of the furnace three openings, D E F, connecting the exterior and interior of the furnace. The top of the uppermost opening D is preferably at the inner roof of the combustion-chamber X, the opening being used for the introduction of fuel and air into the furnace. To carry into effect the latter object the door a is provided with perforations or damper h. Opening E has a door, I), and is on a level with the grate I, and is of use for drawing the grate-bars. Opening-E has door d giving access to the'ashjpit Z. H is the rear wall of combustion-chamberj-X, and extending backward and downward from the top of the same to a point a little over half the height of the combustion-chamber. From and above the plane of the grate-bars the sides of the combustion-chamber X incline gradually inward to the top of the fire-box. (See Fig. 2, Sheet 2.) The grate-bars I extend to a short distance behind the vertical plane, in which thelowestpoint of the. wall H is situated. Immediately at the rear of l the grate-bars rises an abutment or wall, K. In front of the wall H, and parallel thereto, extends the perforated plate L, being sufficiently far removed from the wall to allow air to pass between the two sufficient for the perfect combustion of fuel. A space sufficient for the same purpose is left between the top of the furnace and the plate. The plate is perforated with holes e. The receiving-chamber or radiator M, which receives the heated products of combustion, and imparts their heat to the air which is to supply the house, is constructed as follows:

The back N of the wall H, beginning at the bottom of the latter, extends upward and backward at nearly the same angle vas the wallH extends forward, and meets the top 0 of the chamber M. This top is preferably horizontal. The floor P of this chamber be-' gins at the top of abutment K, and extends back horizontally. The mouth of the flue or pipe Q for the exit of the products of combustion, termed in non-smoke-oonsumin g furnaces the smokeflue, is situated in this floor, preferably at or near the rear thereof, and thence passes vertically down into the horizontal pipe or flue R. The latter pipe extends through both sides of the furnace, and at one end is provided with cap S, and at the otherpasses out into the smoke-stack. The flue T, which supplies the air, which is to be heated and delivered to the house, incloses the latter portion of the pipe R. A space, U, is left between the radiator and the outer walls of the furnace, through which the air can pass. are tubes connecting the air-space U with the flues or register of the building to be heated. The mode in which my improvements'oper ate is as follows, viz: I make a fire in the combustion-chamber in the usual way with wood and coal, preferring,however, thatthesides of the grate-bars shall receive an excess of wood, shavings being placed in the rears After; starting the fire in therear I commence putting V thecoal in front till it'rolls down and strikes;

abutment K. As fastas the latter consumes I I add-more coal until it is cokedtowithin two 1 inches of the top of the throat m, the latter being the opening between the combustion chamber and the radiator M, and lying be rwa'llsxfiand K. "Then the combustioncham berma-y'be fillediup to thetop of the h indoor-wand over the top of the fire-bed j andthetop of "the plate L, an-dftheneezdown between the plate and wall H. Allthegases T ofthe burning fuel 'passover the top of the plate or through the perforations e, and, :mix- 1 ingwiith the air passing down the space between the/wall H and plate L, are carrieddown to the thnoatmand there, in come quen'cenf the intense heat, thesaid"prodrrcts" of combustion are by the aid of "the said air ignited, and the oxygen of the latterchemif callyunites the carbon, em, of the pro- 1 ducts; The heat thus generated passesinto andfills the radiator M, filling the latter byLettersPatentis i A In -a furnace, X, the combinationof openings D m plate L, wail H, and throat m], plate i being removed sufficiently far from wallfHj tof j i allow the passage -ofa'ir 'betwee them, as and thence itpasses down flue *Q iinto smoke or eduction pipe R, giving ofl'lon its way through the latter much of its heat, the cool air pass ing fromthe outer atmosphere through induction-pipe T. Thus much of the heat which would otherwise pass 0E through pipe '1 and be wasted is utilized. The location of 'p'ipeQ in the of the radiator practically preserves thelatter from the action of V theiire, and moreequally distributes the heat,

because the heat has a tendency to ascend,

and in order to get out must first fill the entire radiator; whereas, when the smoke-pipe "is placed, as is "usually the case, in the top or upper part of the radiator, the upper part is overheated, while the lower portion is left comparatively cool. The provision of cap S enables the pipe to 'be conveniently cleaned of any settlings which in possibly "accumulate therein. v

Whilethe construction-of the com bustion lcham oer "herein shown :andflescribed is espe- !cially adapted for a hot-air, furnace, El do not limit the application efit to that: ems of 'iurmecca-hut claim itas a' smoke-consuming fur 11 some for any purpose to which it 'canhexapplied. The named-is true offzthe The furnace, which feeds through m, may be zofany desired construction, and theadvan tages'resulting from: the arrangementof pipes a What I claim new, ea ime i in presence of- D. P. KENNEDY,

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