US343061A - Air-blast-heating oven - Google Patents

Description

(No Model.)

Aj.. PEGKHAM. AIR BLAST HEATING OVEN. No. 343,061'. I 4Patented June 1, 1886.v

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UNITED STATES PATENT OFT-ien.

EDGAR PECKHAM, OF SYRACUSE, NElV YORK.

AIR-BLAST-H EATING OVEN.

SPECIFICATION forming part of Letters Patent No. 343,061, dated June 1, 1886.

Application tiled March 14, 1.51514. Renewed April 17, 1886. Serial No.199,2l1. (No model.)

To all whom it may concern.'

Be it known that I, EDGAR PECKHAM, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Air-Blast-Heating Ovens, of which the following, taken in counection with the accompanying drawings, is a full, clear, and exact description.

This invention consists, first. in the coinbination, with a furnace or a Catalan forge tire, of a horizontally-prolonged tortuous iii-e flue, and an air-blast oven arranged horizontally across said ue, whereby the ir-blast is heated in a simple, effective, and economical manner; and, secondly, in certain novel devices for commingling the heated air with the gases generated in the lire-box of the furnace, so as to produce perfect combustion of said gases, all as hereinafter more fully described, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is a longitudinal section of a heatingfurnace with my invention connected therewith. Fig. 2 is a horizontal section on line x x, Fig. l. Fig. 3 is a vertical transverse section on line y y, Fig. l; and Figs. 4 and 5are longitudinal and transverse sections of a Catalan forge-fire provided with my invention.

Similar letters of reference indicate corresponding parts.

A represents the exit lire tlue of a furnace, B, such as a puddling or heating furnace or forge-iire, from which usually a great amount of heat escapes through the aforesaid lueand is thus wasted. In order to utilize this heat in a simple, economical,and effective manner, I horizontally prolong the flue A, and extend horizontally through the same a tortuous or sinuous air -blast duct or pipe, G, which conveys the hot-blast to the furnace or its combustion-chamber to supply the fire with heated oxygen and thus produce perfect combustion.

In construct-ing the aforesaid air-blast-heating oven I prefer to arrange the fire-fines A in two or more seriis in different horizontal planes and the air-ducts O in horizontal planes between the planes of theflues A, and running respectively parallel one directly over or under the other, as shown in Fig. 3 of the drawings, so that the air-ducts are uninterruptedly joint, as shown.

iu'ipinged by the heat passing through the tlues A. When the oven is to be constructed wholly of lire-brick, I usually employ brick fittedto each other by a tongue-and-groove Vhen iron pipes are desired for the airduct and the oven is to be arranged near the source of heat or near the furnace or forge-fire, as represented in Figs. 4 and 5 of the drawings, I inclose said pipes in a irebrick chamber or case, D, provided on its under side with ports a a for the admission of the heat into said chamber, the ingress thereof being regulated by removable covers or dampers b b, as shown. The chamber D,form' ing a dead air space, protects the pipes from excessive heat.

S represents the stack, arranged at or near the junction of the tortuous iiue kA with the furnace B,'and A is a iiue connecting the furnace direct with the stack, and provided with a damper, d, by the opening or removal of which the products of combustion are diverted from the to'rtuous iiue A and allowed to escape directthrough the stack. This is done whenever it is desired to cool the hot-blast oven for repairs or other purposes.

Between the fire-box E and furnace B,I erect two bridge-Walls, G G, with a space between them. Across the upper part of this space I build a hot-blast disseminator, F, in the form of reticulated brick-work, underneath which is arranged the discharge end of the hot-blast pipe C, as shown in Fig. l of the drawings.

Over` the disseminator I arrange a nre-deilector, e, in the form of a projection from the roof of the furnace. The deiiection of the fire directly over the ascending disseminated hot-blast serves to thoroughly intermix the' latter with the heated gases and thus promote the combustion of the same.

I am aware that tortuous passages have been formed for escaping products of combustion, and that fresh air heated in such passages has been carried back to be injected into such products near the combustion-chamber. Such features, broadly, are not sought to be covered in this application.

What I claim as new is- 1. The combination, with the combustion-` chamber E, tortuous passages A, stack S,and direct passage A', controlled by a valve, d,

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the air-blast pnssnges C, nearly surrounded by In testimony whereof [havcherennto signed the passages A, and the passage C', terminabmy name and affixed my scarl, in the presence ing and delivering thc hot air near the com- I ofbwo attesting Witnesses, at) Syracuse, in the x5 bnstion-chamber, substantially as described. county of Onondaga. in lille State of New 5 2. The combination, with the combustion- York, this lst day of March, 1884.

chamber E, the two bridge-walls, G G, and deflector e,l of Iche torbnous passage A, sta-ek S, EDG-AR PECKHAM. [L s] direct passage A', controlled by valve d, the tortuons air-blast pipes C, arranged as shown, Witnesses: xo the hob nir passage G, and the disseminntor C. H. DUELL, F, all combined and arranged to serve as and (.3. BENDIXON.

for t-lle purpose seb forth.

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