USRE11810E - Stove or range - Google Patents

Description

-neissued Feb. 27, |900. E. R. (QAHUDNE. S sTovE on RANGE. (Applicntion led June 16, 1899.)

2 Smm-sheet l.

www @www Reissued Feb. 27, |900.

E. R.' CAHUDNE. sTovE on RANGE.

(Application led. June 16, 1899.)

2 Sheetis-Shee 2.

l Newark, in the -county of Essex and State ofl UNITED STATES' lP AfIENTv OFFICE.

EDWIN It. cAifIooNE, F NEWARK, NEWJlziasmt.V

` fsrro'ya.on,musics.

sraoxnosnoxt rettung met asm-uga Letter. retentit. y1 1, s'1 o, dated 'February a7',- 1 ooo.

originato;atofnaalaumnnats. Appart-maman.raum10,1399. stanno. 'maza Toall whom it may oonoermj Be it known that I,'EDWIN R. OAHOONE, of

New Jersey, have'invented certain new and useful Improvements in Stoves or Ranges; and I do hereby declare that the following is' a full, clear, ande'xaot description of the invention, which will enable others skilled in the artv to which *it appertalns-to make andY use the same, reference belnghad to the accompanying drawings, and tothe lettersfof-reference marked thereon, which forma part of this specification.

My invention relatesin the main-to the class of stoves and ranges 'for Aburning soft or bituminous coal-,wherein the objectof the con-A struction is to effect such perfect combustion that free carbonv is substantially eliminated l and the generation of smoke thereby avoided. The principal features of the invention vare especially well adapted to a stove or range of this .class which em ploysa transverse yair-duct in the'fuel-chainber, dividing the .same into the fire-pot proper and a gas-duct, and I have shownmy invention as applied to a y'cookstove of such character. The invention will be fully and clearly described hereinafter and 4its. novel feature carefully defined in theclaims.

1- Inthe accompanying drawings,

ing the peep-window in section; Fig. 3, a topl plan viewof the same with one corner of the top broken away to show one end of the fuelsupporting bed;'Fig. 4, a section of the airduct; Fig. 5, a similar view of a modified form of air-duct; Fig. 6, aperspective viewl of :i portion of Qne of the pivoted rocking platesin the bed supporting the fuel; Figs. 7 and 8, slight modifications of the construction of the stove-front, Fig. 7 beingavertical section, and Fig. ld a partial front elevation,

. of the same; Figs. 9 and 10, detached views,

on a larger scale, of the peep-window in the side of the stove, Fig. 9 being a vertical section ou liuc 9 9 of Fig. lO'and Fig. 10 a front view; Figs. 11 and 12, detached views of the stove-door, Fig. 11 being a longitudinal sec- Figure l is -a vertical longitudinalsection of a stove em-l bodying my invention, the .plane of theA sec..

Thonon uneju no'ffF'ig. 12 and Fig. 12 t yfront view, partly broken' away, to show the construction;z-and 1B and 14 modified, (vlows of tliepreferre onstrnction of stoveoor.`

Referringtothe' several'views, th'e numeral 2 indicates'fan ordinary cook stove or' range vprovided with the. usual oven 3', smoke and hot-air--flues ydraftdamper 5, smoke-outlet 6, and ash-,pit 7'.

VThe numeral 8, indicates the fuel-chamber as a whole, which is partially divided by a pendent hollowpartition 9 into two compartments 10 and 11, respectively, the first compartment 10 forming the fire-pot proper and theseeond.` compartment 11 forming a gas duct. The hollow partition is'attach'ed by suitable bolts or screws to a removable top` plate 12, and for convenience in castingl prefer to construct the same of two metal plates joined together at their lower edgesnd having the open ends closed by perforated plates 13, through which airis admitted to the interior of said partition. The lower portion of the hollow partition is covered with aprotectingtile 14, of fire-clay or like refractory material, properly molded. to shape and secured to the partition by vbolts or screws. Both the partition and its. refractory covering are pro'- yided withair-jets 15, and as thus constructed the hollow partition forms an air-duct from which the highly-heated air is emitted to combine with the gases passing fromV the 'fire-pot out through the gas-duct 11. Both' the {irepot and gas-d uct are lined at their ends with properly-molded bricks'o'r tiles 16 of refractory material. The partitionl or air-duct at its upper front part is preferably formed with a pocket 17,y and air is admitted to the same through inlets 1 8 in the top plate 12. By this 'construction a large air-space is formed in the upper part of 'the partition or 'air-duct,

where it will not interfere with the operation of the stove, and the constant influx of air to this space will prevent the overheating of and injury to the .partition or air-duct.

Attaching the partition or air-duetto the removable `plate 12 forms an important feature of the invention, as by such construction the partition or air-duct may be readily lifted out without -distu rbing any other part or parts of the' stove, the plate being -entirely independent of the other portion of the stove-top. When the partition or air-duct is removed, the entire fuel-chamber will be spection and repair. Y

The numeral 19 indicates anvimperforate bed on which the fuel is supported, and preferably mounted in this bed are two or more plates 20, pivoted at their ends in the side walls of the stove and adapted to close snugly together at theirbeveled edges, (seen in Fig. 3, )l where the top of the stove is partly broken away, and in Fig. 6, where -a portion of rirhie e.

- order to g ive stable Vequilibrium to the plate lor valve, the stem 22 (see Fig. 6) is flattened on its under side, where it rests in its bearing.

VIn order to obtain access to the tire-pot for cleaning out the ashes and cinders, the stove- `front 23 is hung on hinges 24, so that it may be swungout. In Figs.. 1, 2, and 3 the hinges are at the-top or upper edge ofv theI front 23, so ,that the latter may swing up, and the hearth-plate 25,which covers the ash-pit., is integrally connected to or cast with said front, sov that both maybe swung up and down togcther, as indicated by the dotted lines in Fig. 1. When the stove-front is thus thrown open, the ashes and cinders may be drawn over the edge of the fuel-bed into the ash-pit,

where they fall onto a removable grid 26, supported upon suitable lugs in the ash-pit. This enables the ashes to be sifted and the co'mbustible portions thereof returned to the tirelbox. o v

The hinged stove-front 23 is preferably of i cast-iron lined on its inner face with fire-brick vided with apertures 28, whichppen into ver or tile 27, which when the front is closed forms part of the refractory llining of'the fire-pot. Near the upper edge the hinged front is protical iiues or recesses 29, formed in the outer face of the tile 27, and thence into the firevpot at the upper edge of said tile.` By means of these apertures and fiues or recesses air is admitted at the. top of the fuel. Fuel and cinders are prevented from getting into the ues or recesses 29 by means of a lip or ledge 30, formed on the front plate of the stove, projecting out 'over-the upper edge of the tile in which the dues or recesses are formed.`

The numeral 31 indicates the fuel-charging'door, the preferred construction being shown in Figs. 13 and 14, which do not, howf ever, materially differ from that shown in Figs. 11 and l,12. l

Referring to the general construction shown in each of the several figures, the door proper is formed of -two plates having openings for the mica windows 32, which are clamped and open for inheld between the plates at their corners only, as shownLwherethe outer plate of the door is broken away in Fig. 12 about one of the windows. Except at the corners the margins of the openings are beveled, as `shown at a in Figs. 1'1, 12, and 13, so as -to form air-inlets about the mica at' its four. sides. 0n the inner facev of the door is mounted a slide 33,

having openings adapted to register with the l windows 32 and trunksor tubes 34, projecting inwardly from about each aperture.A The door is provided with apertures 35`,withlwhich the trunks orv tubes are made to register, so as to admit currents ot'v air into the fire-pot,

and as these trunks or tubes projectv in a,

down wardly-inclined ldirection it will be seen thatthe currents of air will be directed downl upon the bed of fuel, the admission of air being regulated bythe slide 33. Inr burning soft coal it is notv usual to employl micawin- .I

dows, asY the mica is liable to become so coated with soot as to destroy its` transparent character; vbut as the mica windows are not intended to be used when the smoke is execs'- sive-as for example, when kindling a fresh tire or putting on -fresh fuel-theyare kept comparatively free from the accumulation of soot. by being screened by the solid portion of the slide 33. When the fire is kindled lor' fresh coal put on, the slide 33 is moved a sufcient'distance to one side to take the trunks or tubes out of register with the mica win dows, and when thus shifted the trunks'I or tubes register with 4the apertures 35 and air is admitted therethrough. When it is desited, however, to cut o the supplyof air entirely, the slide 33 may be moved still farther,

and the air-apertures 35. The construction ofthe charge-door shown so that it will close both the mica windows in Figs. 11 and 12 vis precisely the same as that shown in Figs. 13 and 14, except that owing to the employment o f an extra mica windowthree instead of two-the slide33 cannot be shifted so far and the air-inlet apertures 35 cannot be employed. Nevertheless it is lpossible in this construction to use apertures 36,

which are 'made to register with corresponding apertures 37 in the vslide 33, when the latter is so shifted as vto screen the mica windows. or equivalent means.

In lieu o'f hinging the stovc-frontat its-up- The slide 33 is 'operated by a knob 38` peredge, so that it may be raised or swungV u p, it may bevhinged at one side so as to swing- -like a door, and in lieu of kconnecting the hearth-plate with said front it may be made separate, so as torbe lifted off and set to one -side when the front :is to be opened. These constructions'are clearly'illustrated in Figs. 7 and 8. Either of 'the constructions shown in the several figures may be employed.

The apertures 28 in the stove-front 23 may be left 4opener furnished with a register-slide 39 atV the option of the maker.` In the drawings, Figs. 1, 2, and 8, such a slide is illustrated somewhat diagrammatically.

The plates or valves in the fuelsupporting bed need not occupy the entire bed nor need they be 'so' wide relatively, as represented in Fig. 1. In Fig. 7 they are represented as narrower and occupying a place at the front of the bed enly.

As it is desirable to have some means by which the gas-duct-ll may be inspected without having to raise one of the lids orpot-hole covers 40, I provide a mica window 41 in the end of the gas-duct. In carrying out this construction (best seen in Figs. 9 and 10) I attach to the Vstove or form integrally therewith an inclined trunk or tube 42, which opens into the gas-duct through the side wall of the stove. In the outer end of this trunk or tube is placed the mica window 41. The plate of mica is clamped between two frames 43 and 44, the latter being cut away at its lower side to leave orv form a restrictedair-inlet under the edge of the mica. I find that the trunk or tube 42 prevents the smoke from getting to the mica and depositing soot Qthereon, being assisted by the air entering under the mica, (see arrow `in Fig. 9,) which creates a current inwardly through the trunk or tube.

In order to facilitate slicing or stirring the fire in the fire-pot. without interfering with the draft, I provide in the top plate of the stove (see Fig. 3)' a poke-hole 45, covered by a wicket 46, hinged to the top plate.. I pre" fer-to recess 'the wicket inthe top plate and to arrange the recess at the front edge of the stove, so that the wicket may be turned outward laterally, as shown in Fig. 3.

For a cooking-stove which is adapted to be set with either side next to a wall I prefer to provide two mica windows 41 and two wicketcovered poke-holes 45. seen in Fig. 3, in which figure one of the wickets is shown displaced.

l 'The back part of the gas-duct 11 is formed as to its lower part bya curved tile 47 and as to its upper part byza water-back 48. Both of these features are clearly shown in Fig. 1. In stoves of this class, so far as I am aware, water-backs have not been employed, owing to the diculty of getting su flicient heat when v situated in the usual place at the front of the lire-box. The back wall of the gas-duct has anl ogee form to properly direct the iiames and gases, and if the water-back be omitted a tile or plate of the proper form should be substituted therefor. Y

The trunks or tubes form an important feature of my invention, as by means of their peculiar shapeand position, having a contracted outlet and preferably projecting into the combustiouchamber in a downwardly-inclined direction, the air isdelivered in currents or streams toward the bed of fuel at individual points. Under the influence of the draft these currents or streams of air are drawn down through the bed of fuel, causing channelsl to be formed down through the bed of fuel. Thewalls of these channels become incandescent under the action of the currentsV This duplication isk `f air and gradually extendingthe entire bed of fuel becomes an incandescent mass, thus insuring perfect combustion. The admission of air through the trunks or tubes is regu lated by the slide 33, and after the fuel be# comes incandescent the slide may be shifted to bring thek trunks or tubes in register with the'mica windows, so that the fire maybe inspected. Y

I do not wish to limit myself to the specific construction shown heroin in all respects, as this may be varied to some extent without departing materially from my invention. For example, as the partition or air-duct is supported inthe lining 16 it is not absolutely essential that it shall be secured to the plato 12 at the top. The lining of the stove-front, and, indeed, ofthe entire fuel-chamber, might be of metal; but fire-tiles are preferred.

The removable front may be secured in any known mannerlto the stove-frame; but I prefer to hingeV it. The function of this front is to throw open the fire-pot, so that coke and unburned coal may be, readily removed.y

The frame about the-mica in the door, Figs.y

11 and 12, may be recessed in any convenient v trunks or tubes extending downwardly from 'the upper` part of the fire-pot, from a plane above th'e'level of the bed'of fuel, and adapted to direct jets of air toward the bed of lfuel for its combustion ,all constructed for the pur pose of conducting the air and the products of combustion downwardly through the fuel under the influence of the draft.

2.V Astove having a fuel-magazine, a partition extending down'wardly a predetermined distance therein to divide said fuel-magazine into a repot proper and a gas Iduct or flue, and one or more trunks or tubes adapted to deliver air into the fire-pot down upon the bed of fuel. e

3. In a'stove, the combination with the fuelmagazine, of a hollow partition extendinga predetermined distance down into the fuelmagazine to divide the same into a fire-pot proper and a gas duct or flue, said hollow partition being provided with air inlets and'out'- lets, and a plurality of trunks or tubes adapted to deliver'air into the'ire-pot.

4.l 1n a Stove, the combination with the fuelmagazine, of an air-duct extending a predetermined distance down into the fuel-magaz'ine to divide the same intoa fire-pot proper and a gas-duclone `or more air trunks or tubes, and animperforate fuel4support,wherel by jets of air are directed upon t-he bed of fuel and drawn therethroughunder the influence of the draft.

5. A stove or range having a fuel-magazine and a transverse air-duct and perforated partition separating said fuel-magazine into a lire-pot proper and a gas-duet, said air-duct connected atits lower edge to the hearthplate,'

being suspended from a removable section of the top plate of the stove or range in front of the pot-holes, substantially as set forth.

6. A stove or range havingafuel-magazine and provided with a divided top plate, one section of which is arranged in front of the v front potholes, and a removable, transverse air-duct and perforated partition which is arranged under said front section and divides the fuel-magazine into the tire-pot proper and the gas-duct, substantially as set forth.

7. A stove pr range having afuel-chamber therein provided with a transverse aird uct, said duct having a pocket at its upper part, the top plate of the stove having air-inlets to admitair tosaid pocket.

8. The combination with a stove or range having in it a fuel-chamber, ofthe metal aird uct extending transversely across said chamlber, said duct being provided at its narrow, lower part with a protecting-tile, and at its uppelfpart with a pocket extending toward the front of the stove and adapted to receive air through apertures in the stove-top.

9. A stove or range for burning bituminous coal, having a fibel-magazine, a transverse air-duct andl partition, and a vgas-duct back of said partition, the back wall of said flue being formed of a curved tile at its lower part and a water-back above said tileand resting thereon, as set forth.

10. A stove or ran ge for burning bituminous l coal, having` a fuel-magazine, a transverse air-duct and partition, a gas-duct back of said air-duct, aeharging-door and an imperforate fire-bed, and having a `hinged front extending from the {ire-bed up nearly to the charging-door and lined with a refractory tile, said front forming the front wall ofV the fuel-chamber, substantially as set forth.

11. Astoveorrangeforburningbituminous coal, having a fuel-magazine, a transverse air-duct and partition, a' gas-duct back of said air-duct,a charging-door and an imperforate fire-bed, and havinga front, which extends from the tire-bed .up nearly to the charging-4 vdoor, said front being hinged at its upper edge,

and lined with refractory tiles or material, substantially as set forth.

v12. A stove or range for burning bitu minous coal, having a front for the fuel-chamber,

hinged to the stove-front and a projecting lip 1 below the charging-door, the said front having air-inlets, and a tile on its inner face with recesses which register with the inlets and open out of the upper edge of the tile under the lip, substantially as set forth.

13. A stove or range having a fuel-magazine at its front part, the top plate of said maga.- zine having a wicket-recess atl its front edge and a poke-hole of 'small size in said recess, and having a covering-wicket set in said rei cess so as to close said poke-hole normally,

i` said wicket being adapted to swing out of said i recess toward the front for uncovering the J poke-hole, as set forth.

` 14. Astove .for burning bituminous Vcoal having in its side at the top plate an aperture provided lwith an inclined trunk and a peepwindow of mica at the outer end of said trunk, substantially asset forth.

15. Astove errange for burning bituminous coal, having-a transverse air-duct and agasduct back of said air-duct, and having also a peep-wi-ndow of mica in the side of the stove at the end of said gas-duct, said window being situated at about the level of the top of the stove, substantially as set forth.

16. Astoveorrangeforburningbituminous coal, having a charging-door provided with a mica window and having an apertured sliding screen mounted on the inner face of the door l and adapted to be moved into and out of register with said window,esaid screen having a trunk at the aperture therein, substantially as set forth.

17. Astoveorrangeforburningbituminous coal, having a charging-door provided with a mica window havingpassages for air about the mica, and having an apertured slide mounted on theV innerv face of the door and provided with a trunk about the aperture therein, said slide being adapted to put the aperture therein intoor out of register with the mica window, substantially as set forth.

18. A stove or range havingafuelmagazine, `a gas-duct and a transverse, pendent,hollow partition between said magazine and gas-duct, the back wall otsaid gas-duct having the peculiar ogee form shown, that'is, a concavity at itsv lower part and a substantially-vertical middle portion, whereby `the gases are deiiected upward, and a backwardly-ared upper part, all as set forth. e

19. A stove or range for burning bituminous coal, having a fuel-magazine anda transverse air-duct and partition at thel rear of same, and

having a removable front between the lre` bed and thecharging-door which front forms 4the front wall of the fuel-magazine and extends down to the lire-bed, whereby the fire- IOO box may be opened for the removal of coke and unburned fuel.

20. In a downdraft-stove, the combination of a fire-pot or magazine, a plurality of trunks or tubes, constructed and arranged to deliver jets or currents-,of air down upon or toward the bed of fuel, and means for conducting or drawing thejets orcurrents of air downwardly through the fuel.

g 21. In a downdraft-stove, the combination of a fire-pot or magazine,- an imperforate fuelsupport, and a plurality of trunks or tubes, constructed and arranged to deliver jets or currents of air down upon or toward the bed of fuel, and means for conducting or drawing the jets orcurrents of air downwardly through the fuel.

22. In a downdraft-stove, the combination of a iire-pot'or magazine, having an opening Iator near the bottom thereof, said opening communicating with a ilue leading to the chimney, an imperforate fuel-support at the lzo 11,81%). l ls Y bottom ofthe fire-poter magazine, and a plurality of trunks or tubes .for delivering jets 'or currents of air .downs upon'or toward the fuel-bed, 'all constructed for the purpose of conducting the jets or currents of air downwardly through the fuel under the influence of the draft..v j

v23.v In a doWndraft-stove, the combination of a fire-pot or-magazine having a lateral opening at or near it'sbottom communicating with' a. ue.lea'ding to the chimney, afuelsupport at the bottom of Athe firefpot-ormgazine, a. plurality of air-tubes extending downwardly from the upper portion of there-pot --from a plane above the level of the fuel and adapted to direct jets of air toward the fuel for its combustion, 'and a gas-duct contiguous -to the -walls of4 the {ire-pot ormagaznegt-v all constructed for the purposeof conducting the air and the products of combustion downwardly through the fuel vand through the latxeral opening in the fire-pot or magazine under,v the influence of the draft; substantially as. .descgzrbecLV Y v fr 24.- In a downdraft-stove, the combination of a fire-pot or magazine having -a lateral opening at or near its bottom communicating y with a flue leading tothe chimney', a fuelsupport at the bottom of the lire-pot orA magazine, a plurality of air-tubes extending downwardly fromA theupper portion of the lire-pot wardly through the fueland through the 'lat` eral opening in the fire-pot or magazine under 'the' influence of the draft, substantially as described. s

lIn witness whereof I have hereunto signed my name in the presence of two subscribing witnesses, Y v

, y EDWIN R. cAHooNE. Witnesses:` v

FRANK' A. BAKER, C. E. SHACKLADY.

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