USRE1409E - Improvement in coal-stovesi - Google Patents

Description

G. J. KINGSBURY Coal Stove. I

Reissued Feb. 17, 1863,

UNITED STATES PAT ENT- OFFICE.

GILBERT J. KINGSBURY,onneounstrnn, NEW YORK.

IMPROVEMENT IN coAL-sTovEs.

specification forming part of Leiters'Patcnt No. 23,587,?1ateufipril 12; 1859; Reissue No. 1,409, dated February 17, 1863.

To all whom it may concern:

.Be it known thatI, G. J. KINGSBURY, of

Rochester, in the county of Monroe and State of New York, have invented certain new and .useful Improvemen ts in Goal-Stoves, for which Letters Patent .of the United States were granted me on the 12th day of April, 1859, and

for additional improvements of the same on the 18th day of September, 1860; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification. I

' --Figure l is a central-vertical sectionof my improved stove; Fig. 2, a plan of the upper portion of; the fire-pot on an enlarged scale detached Fig. 3, a central vertical section of the same part; Fig. 4, a perspective "iew of thbidtermediate cap -conneeting the fire potand supply-cylinder; Fig. 5, a front elevation ofthe supply-door detached Fig. 6, a plan, of thesupply-cylinder, representing more parti'cularly the. funnel or guard for conducting the coal to the cylinder.

.Like letters designate corresponding parts 'in allthefigures. 1 e

The outer cylinder or stove-body, A, is of ordinary or convenient construction, and has within, near its-bottom, a fire-pot, preferably made of twojpar ts, -B and O,the whole formin g in shapethe inverted frustum of a-hollo cone. "The lower part, 0-, may be plane or corrugated, but. the upper part, B, is provided with a suitable number of radial bars,D -D, situated intermediately with the outer and inper rim or. periphery of the ring, a central opening, a," being left for the passage of the fuel, andhavi'n-g between them corresponding spaces or openings, EE, extending entirely through thesaid upper portion of the fire-pot,-

as represented .niost clearly 'in Figs. 2 and 3. Thus therheat and gases from the fire-pot have aqlward through these spaces,

a v. v between the radial bars, 6utsideth&supply-' cylinder, presently to be described.

In the top surfaceof each of the radial bars D D; is'n'iade a longitudinal groove, e,c'om1nu nicatixlg} at the outer end with a passage or orifice, d e rtendin g downward through the ed go of the circular. ring and openin g into the chamber J below, said chamberhaving no connection with the ash-box, and likewise com 'municating at the inner end witnan annuiar groove, f, around the opening a, as shown'most' clearly in Figs. 1 and 2.. From the longitudiv nal grooves 6.6 notches iii-are made laterally on either side in the bars, and opening into the flame-spaces E, and; from the circular groove f similar notches are made. communi eating in like manner. "()n the top of tiie firepot rests a short hollow cylindrical. cap, G, forming the has 5 of thesupply-cylinder hereinafter described, andsub stantiall y of the form represented in Fig.';-4, being. provided with radial bars D D, of the same number as and similar in shape to those of the top of the firepot above described, which they [it closely and cover. The bottom edge of the cylinder forming.

the cap and the lower planesu'rfacesof it's rad-j .ial bars are preferably-provided with grooves -correspanding:-withtthe-grocveaef-in-the te-p -of the fire-pot which they. cover; but in the case of the radial bars'the grooves donot reach quite to the outer'end; as that-would allow an escape of the air conveyed the-rein; ,Theradial bars are stifi'ened and braced by vertical ribs 'or flanges g g, occupying the angle between the said bars and the side-of the cylind'ensubsta'm tially. as repreSented'J Ihe cylindrical cap serves as an intermediate couuection and'su'pport with the -fire'pot .and supply-chamber above, and is the medium of separation between the chamber of combustion and the outer open -chamber,'O', of thestove,; by w'hic'h means the heat and .products of combustion'are allowed to escape'wi-thout passing through the reserved fuel. Its lower edge and gradi albars also efi'ectually cover the "air groov'es, preventing "th'e' escap'e of "the air iand excluding dust therefrom. 0n the upper end of the cap rests a supply-cylinder, ;H, of s uflicieut capacity to contain a conveniel'it g'u1pply of: fuel. From' this cylinder eoitstant supply'of: coal falls .into the fire-'pot'as 'it bdr'u's awa without the fire-reaching abovesgaid fir'e pot. -The supplyajnu the top'. closed by-the cover-s, and com-1 municatiomfrom said "fire potto'fltheexit pipe' ibein openi through the "spaces; E: new I intensity-of- -wok-combustion-.is-fat. the periphery of the fire-pot"and concentrates at the flame-spaces .abo'vementioned. 'yTh'us there. is

. nolmateria'l loss occurring from internal radiation or from, thea'heatt' beihg carried direcfly highly heated, and therefore thei most inflamcylinder.

outside ofthe furnace audthe heat concentrating through the spaces E E close to the outer walls of the stove,'the greater portion of it is radiated through the room before it reaches the escape-outlet. To'increase still further the intensity of the heat at this point, and atthe same timetoieconomizeto the greatest degree the burning of thegases that are produced by the combustion, 1 in-r,,

' ,MEWEI? thagurpaseaas-wner sheared isthus obstructed (the side'draft through the spaces air, by becoming highly heated" by surround- 'ing the firechamber in the space. J, and by combustion,b'y occurring directly atthatpoint where the gas escapes from the fire,'ta ke s place at the moment that the gaszisv the most,

in ible' and in the best' condition to be utilized, The. direction ot-"the draft-current from the furnace through the spaces E E causes-the gasflame's' to impinge on the outerwallsof the stove, thus increasing the radiation,

The admission of air into the circular groove s f serves another important object besides ihr nishing a supply for the combustion of the gas, and that is, that by its coolin-gefi'ect'it prevents the iron from burning out'iby the intensity of the. heat, its situation-being in the hottest portion of the firechambe'rr The snpply-cylin ler terminates at the top with a conical flange or funnel-shaped rim, F, large enough to close up'the areabetween itand .the outer cylinder, A. This would obstruct the draft were not provision made to avoid it by forming notches or openings h h on onehalf the circumference of the rim, that be; in g the side which is opposite to the exit-pipe K, in order to bring the heat. forward before it escapes, and thereby increase the heating capacity by diffusion as much as possible. The coals are fed in at a door, N, in the outer cylinder, A, and in order to con duct them into the funne or rim of the sup- I ply-cylinder without falling between an incliued plane or chute is necessary to convey them over the space. This must be removed when the supply is efl'ected, or it will obstrnct the draft in the front .portion of the This object is accomplished by extending the bottom of the door N far enough below the hinge or axis-m, on which it turns, 'to reach the edge of the flange at k, and thus, whenthe door is opened it turns downfar enough to form an inclined plane, which eonnects with the flange at the spacewhich is removedand made straight for that purpose, as indicated by red vlines in Fig. 1. When the door is elevated to a vertical position by closing it, that portion which before formedthe bridge is received into the projecting portion 1' of the outer cylinder, leaving a free space for'the draft in the :front of the stove. As

there is constantly kept a large charge of unburned coal in the supply-cylinder above the fire-pot for the replenishing the latter by its own weight, it is frequently the case that the fire becomes too" hot, and it is necessary that that some-check be provided agarnstsucn actionrmA damper'in the exit-pipe K does not E E being likewise stopped thereby) the fire from the fire-pot gradual-ly'extends upward into the supply-cylinder, there being no current'to carry theyheatcfrom the same.- To

avoid any difficulty of this kind 1 provide a *Bl demrer, r, f r ea the passage when thedamper isopen; a communication is opened from the-'ash -chamber,-' allowing the-cooler air therein' to pass' up, therebydiminishing the draft thr'ough the fire-exit pipe K. Thus the v passage through the pipe? I not only serves as a regulator of the heat but also has a tendencyto, draw the heat downward from the Y fire pot' -when desired, thereby preventing the flfire'; from extending upward in to the supplycylinders lt also serves as a ventilator and escape for' the' dns't cansed byshaking the grate L in the bottom of the fire-pot.-

' What I claim as my invention, and desire to secure by Letters Patent, is-- v I -1. The introduction of a second'suppl y of-air into theflame space or spaces at or near the junction jof the fire-pot B and cap Gr andat "or near the point wherethe gas escapes'froln the combustion of the coal, for the purpose of igniting the samein combination with an interior feeding chamber, substantially as herein setforth. I 2. Ida not claim a descending .draft !,for, supplying air tothe combustion-chamber: but- 1 claim the annular groove fatthe base or of the feeding-chamber,-; connected ;w-ith..-:a n' outer passage or passages for-the admission of, air to that point,iarranged and operatingsnb stantially as herein described and set forth.f-I;-"

connection between the fire-pot and feeding;

cylinder when it conforms ,to' the upper portion of the fire-pot and external air is admitted underneath for'the combustion of the 7 gases,;as herein set forth.

5 opening r 5. The arrangement of the pivotegi door N with, the lower portion extended toform a.

plane in combination with theflange F-forz safely supplying ooalto the cylinder H -when open, and leaving a space for the passage of the products ofeombustion 'when closed, substantially as set forth.

. 6. In combinationwith'the snpply-oylind eri H and fire-pot the flue-pipe I, connected at the' bottom with the ash-chamberjn such gig inanner that when the passage of the-pipe is open it allows the escape of the heat through the same, thereby giving a counter direction 'to thefire, preventing it from extending-into the s'g rpply-ehamber,substantially as set forth.

\ GILBERT J. KINGSBURY.

Witnesses :7

'HL- G. Guns; FRASER. v

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