US91875A - Improvement in cooking-stoves - Google Patents

Description

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J. J. SAVAGE, OF TROY, NEW YORK.

Leners Patent Nt.' 91,875, dazed June 29, 1869.4

IMPROVEIWENT IN COOKING-STOVES.

VThe Schedule referred to in these Letters Patent and making part of the' same.

To all whom fit-may concern:

Be it-known that I, -.I. J. SAVAGE, of Troy, in the county of Rensselaer, and State of New York, have invented certain new! and useful AImprovements in Cooking-Stoves; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying sheets of drawingsmarked, respectively, A and B, and letters of reference marked thereon, making part of this specification, in which- Figure 1 is'a pelspective view of said improved stove;

Figure 2 is a longitudinal vertical section thereof;

Figure 3 is a perspective view of one of the liningplates of fire-hoi;

Figure 4 is a modification in construction of .the fuel-door or cover; i

Figure 5 is a longitudinal vertical section of g. 4 and Y Figure 6 is a vertical cross-section through the extended fire-box of said stove.-

The same letters refer to like parts in each of the said figures.

My invention isf4 an improvement in the cookingstove for which Letters Patentwere granted me, dated the 12th dayof February, 1867, and it is intended to furnish a more perfect supply of air to the burning fuel and combustible gasesevolved therefrom, and alst` to otherwise make said stove more perfect and convenient in its operation; and

The said invention consists in the construction, combination, and arrangement of certain devices with said cooking-stove, by means of which a hot-air draught is so supplied as to quickly mix with the combustible gases evolvedV from the burning fuel in the fire-box thereof, and the air-draught thereinto, through the tire-grate, is heated, regulated, and equalized, and the feeding of fuel thereinto is made more perfect and convenient, all in manner substantially as hereinafter fully described and shown. l

That others skilled in the art may make and use vmy said improved lcooking-stove, I now proceed to fully describe its construction and operation, which is as follows:

The fire-box A, over the fire-grate D, is extended outward therefrom, below and forward of the flamechamber C, thusV forming. a coking and feeding-box thereof, which has its fuel-door-way P located below and forward of the darne-chamber C, substantially as shown in the annexed-drawings.

rIhe bottom part of said extension B is nngrated, and slopes toward the fire-grate D, to facilitate feeding of fuel thereon, and is provided with lining-plates, as shown.

The fuel-door-way P is closed by a combined sliding and lifting-cover or door, constructed as follows:

The under, or lire-side thereof is made in two pieces,

F and F', which have sides, It k, substantially as shown in iig. 1 or their equivalents may be formed in the cover-plate G, as shown in figs. 4 and 6.v Y

,The part Fof said under platehas a series of airdraught perforations, e e, and also lugs or hooks ss, which hook under fianges t t, substantially as shown in iig. 6, to thereby hold it in proper position when drawn out. v

The top side of -said door i s made in two pieces, G and G'..

The partG projects over the front of part F, in manner about as shown, so as to leave an air-entrance opening thereunder,

The top and bottom plates G and F, and G and F', are now bolted together by bolts i., and hinged together by the hinges 1' t', thus forming a door or cover for said door-way'P, and also forming the air-draught passage-way a, between said cover-plates, in manner substantially as shown in iigs. land 2 of the drawings. Y

This cover is now putin its place for use, by sliding it over said door-way P, with the lug or hooks s s hooking under the flanges t t, aforesaid, until its rear part is under the edge of said door-Way, or so as to make 'a close joint -witl the front plate N, as shown.

When av re is to be started, or the condition ofthe lire on the grate D ascertained, said door or cover may then be drawn back, thus giving easy access. thereto; and wheny the re needs replenishing, the lifting-part G F, hinged to the `sliding part G and F of said door,

is lifted up and back, in manner as shown'by the dotted lines in Iig. 2, and the coked fuel in the extended fire-box B is then Vshoved back on to thefire-grate D.

A fresh supply of fuel being placed` therein, thetlifting-door is closed, as before.

Air now enters said passage-way'a, is heated, and passes through the apertures e e, downward, in impinging jets or sheets, among, and quickly mixes with the combustible gases evolved from the igniting fuel in said @cking-box B, in manner substantiallyas shown by the arrows in fig. 2, so producing thereby more perfect combustion of said gases; the admission of air thereto being controlled by a damper, J, so operated as to diminish or close said air-passage a.

A modification in the construction of the aforesaid door is shown in figs. 4 and 5, wherein the door is made only to` slide, having no hinged lifting-part, and the upper plate, G, is provided with sides 7c k.

'lhe under plate F has perforations e as before; and when said door is closed, the under plate F makes a close joint with ,the perforated plate H, affixed to.

when the coking-box B has onlya sliding cover or door, is shown in fig. 5 of the annexed drawings.

When the fuel on the {ire-grate D needs replenishing, the fuel-door F is slid open far enough to admit the pronged feeding-lever S into the coking-box AB, to first loosen the coked fuel next the fire-box A.

The coking-box B is'then filled with fresh fuel, andv the door closed.

.In figs. 4 and 5, a device is shown, combined with the stove, for supplying a hot-air draught to the solid fuel lying on the grate-bars of the fire-box; and the said device consists in an outer plate or casing, K, provided wth .end-pieces R R, andan-entrance apertures n fn, and is divided by a vertical plate, c, which extends from-the upper edge of the box down to near its bottom, so as to form thereby a downward and upward air-draught passage-Way, b b', when said casing K is arranged-and secured, by bolts or their equivalents, in its position under the coking-box B, and in front of the ash-spaceE, 4so that the bottom side of said cokingbox forms the top, and the front plate of the ash-space forms the rear part or side of said air-draught passageway b b', substantially as shown in said gs. 4 and'5, whereby the air-draught is heated in its passage therethrough, and better distributed at the under side of the dre-grate, thus producing equal combustion of the fuel thereon.

The shelf-plates L Lv are arranged above and forward of the 'fire-grate D and {ire-box A, at the top and sides or ends of the said extended fire-box B, and at each side of the fuel-door-way P, so as to be level, or nearly so, with the fuel-door F G thereof', so that when closed, it then forms, together with the parts L L, aforesaid, a convenient' shelf over the top and at the sides of the extended iire or coking-box B; and when said fuel-door is opened, to feed fuel'into the re-box B, then' the door and plates L L, together, form a shelf about the door-way P, so that any fuel 'spilled in feeding, and caught thereon, can be brushed into the r'e-box B.

An improvedmanner of constructing Vthe fire-box lining-plates is shown in iig. 3 of thelannexed drawings, wherein h hh are a series of short ribs or flanges,

-arrangedin parallel rows or lines, about an inch, more or less, apart, and each rib of the respective'rows placed in such relative positions to each of the ribs of itsv opposite r\v, as to have its` joints or ends come opposite tothe central part of the ribs of its opposite row, or to break joints therewith; and, combined with said series of -ribs, there is an interposed series of air-draught-apertures or slots,.g g, made through the plate. The said respective series of ribs and apertures are arranged in alternating succession over the fire-side of the re-plate,in manner substantially as shown-in said iig. 3, thereby increasing' the strength` and durability of the fire-plates and fire-box.

The extended [ire-box B is constructed with a close or ungrated bottom, while the fire-box A has a grated bottom, D, substantially as shown in the drawings.l

By this particular construction offsaid lire-box B,

' fuel placed therein ignites and burns or cokes from the rear, next the fire-box A, and top, downward, gradually or slowly, to 4 the close bottom of saidlre-box B, so that the evolved combustible gases, in the process of coking the fresh supplyof fuel, pass np through the igniting fuel, and thus are highly heated when they come in` contact with the jets or 'sheets of hot-draught air, through the perforations of the aforesaid airdraught plate F, which is so arranged over said firebox B, that the air-supply impinges inward and downward thereinto, nearly at right angles, or crosswise to the escaping currents of combustible gases, and thus is made to mix quickly and intimately therewith, thereby perfecting vtheir combustion.

The coked fuel in the fire-box A is supplied with air through the tire-grate D, and burns from the firevgrate upward, in the usual manner, while the fresh fuel in the fire-box B is coking, wherewith to renew thejre in the fire-box A.

Having thus described my invention,

What .I claim, and desire to secure by Letters Pat- 1. The air-draught passage-way a, in combination with the movable door or cover G F of the fuel-aperture or door-Way P, of extended ire-box B, located substantially as described, for the purpose set forth.

2. v The arrangement-of the air-draught passage-Way a, directly over the extended tire-box B, substantially as described. Y

3. In combination with the extended fire-box B, located as described, the front plate N and fire-box A, the combined sliding and lifting-doors G F and G F thereof, substantially as, and operating for the purpose s'et forth.

4. In combination with the extended fire-box B, the air-draught passage-way a, thereover, and coverplate G, the perforated air-draught plate F, arranged to operate at 0r over the top of said fire-box, substantially as descri ed.

5. The arrangement of the hot-air-draught passageway K b b', under the extended fire-box B, in combination therewith, and with the re-gr'ateD, and ashspace E, substantially as and for the purpose described.

6. The combination with each other of the extended' fire-box B, the hot-air-draught passage-way a thereover, and therhot-air-draught passage-Way K b b thereunder, when respectively and relatively arranged with vthe fire-grate D, ash-space E, fire-box A, and flamechamber O, substantially as and for the purpose described.

7. The combination of the series of herein-described break-joint-arranged ribs or anges hh h, withA the series of apertures or `slots g g, arranged in alternate succession, and combined with the {irc-box liningplates of stoves, substantially as described. 8. The arrangement of the shelf-plates L L, above and forward of the fire-grate D, in combination with the tnel-door-way P, its door or cover F, and thereunder-extended fire-box B, substantially as described.

9. The combination of the close ungrated-bottom fire-box B, and air-draught chamber aftbereover, or its equivalent, with the grated-bottom fire-box A, substantially as and operating for the purpose described.

J. J.. SAVAGE.

Witnesses:

Riom). Pansoorr, AUsTIN F. PARK.

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