US180475A - Herbert harbison - Google Patents

Description

Patented Aug. 1, 1876"..

H. HARRISON.

FURNACE.

N-PFERS, PHOTD-LITHOGHAFHER. WASHINGTON. D. C.`

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HERBERT HARRISON, 0F GODER'IGH, ONTARIO, CANADA.

IMPROVEMENT IN FURNACES.

. Specitication forming part of Letters Patent No. E0,7, dated August 1, 1876 application filed June 23, 1576.

To all whom 'it may concern:

Be it known that I', HERBERT HARRISON, of Godericlnin the county of Huron, Province of Ontario, Canada, have invented a new and useful mprovcmentin Furnaces or Heat-Producing Apparat-us; and-l do hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawing', and to the letters ot reference marked thereon, which form a part of this speciiication.

M y invention relates to an improved method of constructing furnaces or heat-producing apparatus, the object of such being' to attain a more perfect combustion of the smoke-and volatiie products oi' the fuel than by the methods heretofore adopted; and my invention consists in combining, with a series of furnaces, combustion-chambers, one of which is arranged between each two ofthe series of furnaces employed, whereby the products generated by the combustion ofthe fuel in the furnaces are caused to pass into and through such chambers, where secondary or perfect combustion ofthe unconsumed carbon or smoke and gases takes place, such chambers being charged with any required amount of air or oxygen.

ln the said drawing, Figure l is a front end elevation of an apparatus embodying my improvement, as applied to a salt-making apparatus. Fig. 2 is a front elevation with the end plate removed. Fig. 3 is a transverse and vertical sectiolntakeu 'through the furnaces and combustion-chambers. Fig. 41.- is a top View with the evaporating-pan removed. Fig. 5 is a horizontal section taken through the air-inducts leading to the two combustion-chambers.

In carrying out my invention, l arrange a series of furnaces, A A A, in a suitable framework, B, the furnaces being of the ordinary constructiomwith theexception that the arched domes are made fora-minous, in order to allow a part of the heat to rise and impin ge against the bottom of the pan or the floor above. C C are two chambers, one of which is disposed between each two ofthe furnaces, the bottom of each of the chambers being disposed on a plane with the gra-tes of the furnaces. Each of these chambers communicates by means of openings a a, with the furnaces ou opposite sides of it, so as to permit the smoke and volatile products to pass from the furnaces into such chambers. The arch or dome Aof each chamber is 'ormedelosed or unperforated, the object of such being to conlne the smoke and gases while undergoing combustion. D D are two air-pipes, having their induction ends arranged in the front plate or wall E, such pipes extending horizontally around the outer furnaces, and havin g their cductiou ends respectively opening into the chambers C U', as shown in Fig. 5. Each of the pipes D is provided with a cock or register, d, by which the quantity of air introduced into the chambers may be regulated at pleasure. G G are steam-pipes connected with any suitable Steamgeneratm, such pipe extending through the sides or walls ofthe case, and respectively into the elbows ofthe pipes D D, as shown in Fig. 5, the object of such steam-pipes beingto create steaminduced currents of air to mingle with the uliconsumed smoke and gases in the chambers C C. H H H H are four tire-brick ues, which are disposed-011 the tops of the walls separating the furnaces from the cham bers C C. Each of these dues near its outer end is formed with a recess, c, which communicates with one ot' the chambers C, 'as shown in Fig. 2, the object of such being to permit the pure caloric contained in such chambers to rush in and fill the vacuum which is creat-ed in the tlues H, by means of a jet of steam, which is introduced through pipes Gr, from any convenient generator, extending through the front wall of the apparatus, and concentric-ally into the fines H, such steam-jets causing a strong draft through the ilues, and forcing therproducts ot' combustion through the eduction end e of the ilues, (which extend through the rear walls f of the furnace,) as shown in Fig. 4, and underneath the drying-door or evaporating-pans.

When the furnaces are in operation I lire the side furnaces alternately with the central one the latter l prefer to make of greater cubical capacity than the side furnaces. By this method ot' iring I am enabled to obtain complete con trol over the smoke, intense heat being, as necessary, an element in obtaining complete combustion as a due supply of oxygen. It will thus be found than when the coal in the two side furnaces has burned down brightly and clear7 and fresh coal is placed in the central one, the clear heat ofthe side furnaces meeting the unconsumed carbon of the fresh fuel from the central one in chambers G, Where a supply of air is provided, perfect coinbustion will take place.

'hen Ishe Haine of the central furnace has become bright and clear, the side furnaces are to be charged with fresh coa-l, the clear heat of such central furnace passing into the chambers C C', and coming in contact with the smoke and gases evolved from the fuel in the side furnaces, and being furnished With any desired quantity of air ywill, as before, produce perfect combustion.

lem/H5 Having described my invention, what l claim is The combination of the furnaces A A! A, with the chambers C C', having communication, as described, and the air inducts D I), steam-pipes G Gr, cocks d d, and the educticn- '[lues H H, -Stc., the Whole being` constructed and arranged substantially in manner, and so as to operate as set forth.

In testimony that I claim the foregoing as my own invention I affix my signature in presence of two Witnesses.

HERBERT HARRISON.

Witnesses:

ALMoN A. THoMPsoN, Roys I. CRANE.

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