US95256A - F n o r m a lv ill i n - Google Patents

Description

A. L. OTIS.

Hot Air Furnace;

Patented Sept; 28, 1869.

Al. Otis.

N-PETERS, PHOYO-LITHUGRAPHER. WASHINGTO4. I c

u u y u oh futmi, the o nty f fMfiLeam an I tatenfIllinois, have invented anew and -usefiilfllmprove meut in Heating-Furnaces Lldo herebyaidecla that the following is afull,

heating- The invent o consistshin ertairi improved arrangementsfof the cjevers ot izbntal furnaces,;calculated curethe ,heatigjg 1o the airj 'as n iuohi'as possible lf'through'theconducting pipes;

Also,lcertaii unproyementsm? the constguction of heatbyj radiatioul andby jconttection; i a u i in the arrangement of Also,"certaiu irnpr yeni a the grate feud Alsqfcertaim the air provements in means (for l ieatiug.

ter, more fullyfj specified Figure represen a furnace, constr te ansrrjerse sectional elevation ccording to my improvea a a a s P, a hereby esca ing jap'art I propose to make the escapepassage 1) for the heated eugth f the valtop O, and to provide age ,va E, so asto open or close tlx'roii hout the whole length, wherelear, and exact, descript on thereof, which will enable ;others skillediiuthe:art 0" make anduse the same,v the, accompanying drawings, 1

t l'chfisfto proyide a more deyeloping heat for 11 ,1341

he waswere,remade;ea qu tea to give out more" pret'iou .ftoshpplyingthe firefall ashereinaf- V ougitudinal sectionaleleyar s ed togpass, evenlyfover the i he heaterfthereby taking i'c arejcorrugated,lproyidewith b y radiation and .by convecu M 'AL; L L 1 N o 1 s.

' i i In order tofacilitate the combustion of the fnel iu I the furnace, as well as the radiation of heat therefrom,

I provide at the back end of the furnace a V-shaped flue, H, through which the product of combustion passes in a prolonged course, calculated to increase the radiating-surface; and through this flue I pass an airy-supplying perforatedtube, K, leading from the backfo f the furnace into the interior space, terminating, preferably, near the front of the fire-chamber, at

about the point a, where the air is discharged in a distributed way to the -fire.

The passingof this tube through the said flue H, where it encounters the heated product of combustion, causes the air thus passing through it to be considerablyheated, thereby greatly facilitating combustion.

Birepresents an opening formed in the rear wall of the fire-chambeiyto admit the product'sof combustion to the flue H, in which the same first descend, then ascend to be discharged through the exit-flue N.

u I is an opening made at the bottom of flue H, to permit the ready removal of the coarse products of combustion which may be deposited, or in any manner accumulateiu the flue.

' It will, of course, be understood that the three openings, P, L, and M, above alluded to, are designed to jbe-provided with suitable hingedor other doors.

My improvement in the arrangement of the grate consists in placing the bars in a circular line, lowest at W the centre, clearly shown at I, fig. 1, which not only increases the fire-surface, but so *shapes the fire that the air passing into it frombelow is admitted, measurably, at the sides, as well as at the bottom,

Having thus described my invention,- i d I claim as new, and desire to secure by Letters The arrangement of the hot-air passage D, substantially as specified. r i "2, The arrangement, with the side walls, of the plates F, substantialiy asspecified. p

3. The arrangement of the V-shaped flue and air supplying pipeK, substantially as specified.

4. The arrangement of the grate I, as specified;

Theabove specification of my invention signedl by me,this 13th day of May, 1869. l

. i A. L. OTIS,

Witnesses: 1

.' WM. H. BRADLEY,

- S. W. Sonmnsh

Images