US833807A - Furnace-grate. - Google Patents

Description

APAtrEN'rBD ooT.- 23,1906.- conm.

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FURNAGB GRATB'. -APPLIQATI0I FILED 00T. 8. 1005.

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INVENTQ R's To all whom t may concern:

SMITH G. TIBs'JAMES A.'jcoEEnAND WILLIAM COREY, or. AKRON,y y'

OHIO.A

FunnAcE- c-in'ArE.

Be it known that we, SMITH G; Trans, JAMES A. COREY, and WILLIAM E. COREY, citizens of the United States, residin at Akron, in the c o'unty of Summitand tate of Ohio, have invented certainnew and;- 'useful Improvements in Furnace-Grates; and we do declare that the following is a full, clear, and exact description ofthe invention, which will enable others skilled in the artI to which it j ap ertains to make and use the same.

g ur invention relates topim-provements in grates for furnaces andy stoves; andthe 1mprovement lcons1sts 1n the construction and arrangement of" vparts adapted tov provide uniform firin and 'an equal distribution of heat within t e fire-pot, all substantially as' hereinafter shown, andmoreA particularly I pointed out in the claims.

Our object is embodied in a rotary grate and a centrallylocatedv member therein adapted to ldis lace the coal withinthe centerpor-tion of t e fire-` ot and whereby a uniform iire is obtained a out the entire circular wall of the pot. f

In the accompanying drawings, Figure 1 is a central sectional elevation of our improved grate and its related parts as seen inv one form ofstofve or furnace.4 Figgl2 is a cross-section on line xix, Fig. 1; and Fig. 3 is a perspective view of the coal-displacement mem- It will be understood that ourV device is adapted for various forms of furnaces and stoves, only one form of which is shown. Thus the furnace comprises a casing or body A, provided with the usual'fire-pot B and ash-pit C .and doors b and c, respectively,

therefor; Casing or body A ma be made 1n `one or more parts, but as here s` own has an ashpit section A', adapted to support firepot section BJ, the upper smoke-flue portion of which is broken away and not shown, as

` the same may be of any well-known type.

. Section A is provided with an inturned flange or projection a, upon whichthe lower i j supporting-ring- 2 for gratemember 3 is 's'upported. Any 'other suitable support for rin 2 may be yemployed or the ring ma -be bolte directly to the wall of casing A. e ing 2 has a circular or endless race 4 for balls or rollers 5, upon which ate member 3 is adapted to 4 rest and where y ease and freedom of rotal tion for the grate member is obtained. Ro.;

Specicationof Letters Patent. Application filed October 9, 1905. Serial No. 281,910\.

' said shaft continuously(r vserve to break upthe 4ecljuivalet projections or rammed oca-23,1906.

tation 4to memberB is impartedbyhpinion 6, .5"4 mounted on a short shaft 7, having bearin in-boss 8 ofcasing A, which pinion meshes with a .circular-gear or rack 9, the-teeth@ ofl j which 'are preferably cast integral withmember 3.at its bottom and-edge. A suitable 6o v crankehandle -en a ement is made with squared end 10- o s aft 7 to either rotate 'or to rock the same, e movement to grate and thereby impart li member 3. y' l I Grate member 3 comprises as i-ts main por.- tion a ring-likebody 1.2, having integral fingers o'r grateTbars 13 radiat' therefrom to;v ward the centerjand terminatlng short there-v of to provide a centralao 15. overlaps the. joint etween ring -2 -and body 12 to exclude cinders and ashesrom point. l

I-Iavingxdesc'rbed-l the main. parts df the 8o grate, we now cometo the essential element Y which contributes the most tothe advantages and benefits derived by our device and which comprises a hollow pillar member D, of cone sha e, adapted to `rest upon the inner 8 5 ends or re' uced projections 184 of'grate-bars 13 and removab e' therefrom, but seated so closely thereon that it rotates with grate member y3. Short lugs or interlocking'ex-4 tensions 20, such as shown lin Fig. 3, may be 9ol provided at the bottom of pillar member D to engage between the ends ofthe gratebars 13 and cause common rotation of said parts.

lPillar member D is preferably of such 2 heiglht as to bring its to labout on a level -95 wit the bottom of the e-door b or ,to the level ofthe bed of-coal usually placed within pot B, and said top portion is rounded. and

as flari sides 21, widestl at its topland meeting t e contracted portion 22 of the roo pillar just above its center between its ends. V A- series of spaced ribs 23, running axially of the pillar the fulllength ofil'aring sides .(21 coal at the top of the bed when grate3 and pillar D are rotated. :o5 These ribs Ymay be made shorter or longer, or

' ers ma be aced uponthe side of theline, althbugh ening 1fi. Aflange 7o i 'the formfshownis :deemed :besti .because the natural dro ping ofthe coal'toward the grate during com ustionis notI .im1`ieded,v .the ribs IOA meansheretofore described a ,being vertically. inclined with their bottoni ends nea-rer tothe center of the pot than thetop. A series of openings 25 aboutV the conebody of the pillar communicates with its hol` low interior 2,6 and rovides for a supply of air for the bed 'of coa labove the grate-bars in order topromote better,combustion.v 1

Other air-openings ma be made higher up .form :and: shape off the openingsmay. be .dif-

ferelitf from. that: shown. 4

Pillar member D. is particularly well. adaptl ed for any coal stove or. furnace such as are -in daily. use, and With its'use a certain amount of coal within the centerfof the firepot is displaced and saved.' The fire being;

ber and against the Wall of the fire-pot,` the vcoirruelled to' follow .the rin Aof coal aboutthe center pillar or cone-disp acement rnemi heat generated is-concentrated at the sides of the pot, where it is most desired'for quickv radiation, and not in the center of therbed of'.

coal, as formerly.

With a stove of a I lven size using ourfdevice a great saving o fuel is effected as compared .with one without, kand although the' quantity Iof fuel isxlessened` in use a greater heating effect is obtained than heretofore.

Perfect combustion andthe disposition off thebed-of fuel and the mixi thereof by the give; the advantages stated. v

Shaft 7 has a sprocket or gear wheel Fattached thereto .at the...outside'of casing-boss 8r which is adapted to be operated by chain Gor equivalent gear connection, which. chain may extend to any point for .distant manipulation of the grate. -For example, said ch'ain maybe yoperated from the upper floorof the lcontribute to dwellingif the furnaceis'located in the basement.

l What we claim is- 1. In stoves and furnaces, a fire-pot taperl ing inwardly and downwardly, a main grate .memberrotatable at the bottom thereof, a

hollow coal-displacing pillar supported `centrally up'on said grate and having inclined coal-breaking projections upon its sides near its. topsubstantially parallel to the taper'of` the fire-pot, said illar having an air-outlet at about its midd e portion.-

. 2.5111 stoves and furnaces,1 a rotatable grate, in` combination with a hollow upright member mounted thereon, said membenhaving. aplain upwardly-tapered body circular in cross-section with air-outlets at abdu.tits middle portion and an outwardly-Haring head with inwardly-inclined ribsfrom the 'top tothe bottom of said head, and a lfire-pot hav-ing'its wall converging toward=the bot- `tomand substantially parallel to the edges of said ribs.

3. As an article of manufacture and sale, a

supplementalI grate member for stoves and furnaces adapted to displace thecenterpor WM. WELLS, J. I. BACHTEL.

5 tion ofthe bedof coal -within the stove or

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