US35141A - Improvement in cooking-stoves - Google Patents

Description

E. J. CRIDGE.

Cooking Stove.

Patented May "6, .1862.

' 4 15566 Warm? fiwan/Zvr WM I MQ M N. PEYERS. Fhofiml-Hlwgrapher, Washingmm D. C.

UNITED STATES PATENT OFFICE.

EDMUND J. CRIDGE, OF TROY, NEIV YORK.

IMPROVEMENT IN COOKlNG-STOVES.

Specification forming part of Letters Patent No. 35,141, dated May 6, 1862.

To all whom it may concern:

Be it known that I, EDMUND J. CRIDGE, of the city of Troy, in the county of Rensselaer and State of New York, have invented a new and useful Improved CookingStove; and I do hereby declare that the following is a full and exact description of my said invention, reference being had to the annexed drawings, in which- Figure 1 is an isometrieal representation of one of my improved stoves shown with portions of the upper part and one side of the stove broken off. Fig. 2 is a central vertical section of the same stove from front to rear. Fig. 3 is a top view of a horizontal section of the same stove at the line .2 2 in Fig. 2. Fig. 4 is a vertical section of the stove at the line y y in Fig. 3, and Fig. 5 is a front view of a vertical section of the stove at the line a: .r in Figs. 2 and 3.

The same letters refer to like parts in all the figures.

111 the annexed drawings, A is the fire-box, with a grate, b, in its bottom over an air-supplying ash-chamber, c.

D is the oven, arranged directly back of the said firebox and aslrchamber.

E E E are smoke or gas fines extended from the top of the fire-box, first over the top of the oven and from there along the back and bottom plates, f g, of the oven to the exit passage 71.

I J, Fig. 2, is an air-space extended continuously along the front plate, 7.", and top plate, Z, of the oventhat is, between those plates and the back plate or back plates, m m, of the fire-box and ash-chamber, and bottom plate, or, of the upper fire-flue, E. The continuous air-space I J has communication with the oven D through an opening or openings, 0, Figs. 2 and 3, at or near the rear upper corner of the oven, and also by an aperture or apertures, 19, Figs. 2 and 5, at or near the lower front corner of the oven. The continuous air-space I J also has communication with the interior of the fire-chamber A by apertures q, Figs. 2, 1, 3, and 4:, leading from the upper part of the front portion of the said air-space into the rear part of and above the place for the fuel in the said fire-chamber. The hot-air space I J also has communication with the open air by suitable apertures or passages, r 2-, Figs. 1 and 4., terminating in or leading into the ends 8 8, Figs. 1, 3, and 5, of the forward upright portion, I, of the said hot-air space; and I generally prefer to have these air-passages r21 extended along the ends 15 t and front side, n, of the fire-box A, and in communication with the interior of the latter by apertures v above the top of the fuel in the fire-box, substantially as indicated by Figs. 1, 2, 3, and 4..

\V is a damper, which can be set, as shown in full lines in Fig. 2, so as to make the gas and smoke of combustion pass through the fines E and E along the back and bottom of the oven, in moving from the top fire-flue, E, to the exit-opening 71.; and the damper \V can also be set, as indicated in dotted lines in Fig. 2, so as to allow the smoke and gas of combustion to pass directly to the exit-aperture h from the flue E without geing through the fines E E, which latter will then be as dead-air. spaces communicating with fine E.

I am aware that it is not new to make a cooking-stove with a fire-chamber, A, grate Z), ash-box c, oven D, fire-flues E E E", and damper IV all arranged together, substantially as above specified, and shown by the annexed drawings; and that it is not new to have such a stove made with an air-space located between the front of the oven and the back of the ash-box and fire-chamber, and communicating by apertures at its ends with the open air, and byan opening or openings at its bottom with the lower front corner of the interior of the oven; and also made with another airspace arranged between the top of the oven and the fire-flue over the oven, and in communication by apertures at its rear end with the back upper corner of the interior of the oven, and by apertures at its front end with the interior of the firechamber above thefuel therein, all as shouul in G. G. lVolfes United States Letters Patent No. 30,514, A. D. 1860; but there is an essential diiference between my improved stove (shown by the annexed drawings) and the stove shown in the said patent of \Volfe. For in that case of Volfe the air-space 011 the front side of the oven is entirely separated at its upper end by a partition from the front end of the air-space on top of the oven, so that however variably the front, top, back, and bottom plates of the oven may be heated in respect to each. other by the fire-chamber and smoke-fines the air in the space in front of the oven can only pass into the lower front part of the oven, and from the back upper corner of the oven into the hotair space on top of the oven, and from that latter air-space into the fire-chamber above the fuel.that is, in the opposite direction to that shown by the arrows w in the oven D in Fig. 2 of the annexed drawings; but in my improved stove (shown by the annexed drawings) it is absolutely essential that the horizontal air-space J on top of the oven should be at its front end in direct communication with or form a continuation of the upright air-space I in front of the oven, so that there can be a free circulation of highly-heated air through the continuous air-space I J and the oven D, either in the direction indicated by the arrows w in the oven in Figs. 1 and 2, or in the opposite direction, according as such change in the direction of the current of heated air through the oven and air-space I J may be induced and become necessary to most completely equalize the heat in all parts of the oven, when the front, back, and bottom plates of the oven are variously heated in respect to each other and to the top plate of the oven, as the smoke and gases of combustion aremade to pass through all the flues E, E, and E, or only through the top flue, E, and as more or less heat is conducted to and radiated against the plates m m in front of the oven from the back and bottom of the fire- 7 box.

I am also aware that it is not new to make a cooking-stove with a hot-air space extended continuously over the top and more or less along the front side of the oven and next to the fire-box and ash-chamber, and with the said hot-air space either in communication with the open air, the oven, and the smoke-fines to merely ventilate and heat the oven, or in communication with the interior of the firechamber above the fuel therein, and with an oven having communication with the open air, to promote the combustion of the gases of combustion evolved from the burning fuel, and to ventilate and in a measure equalize the heat within the oven by a current of air always passing in one and the same direction through the oven and the said hot-air space, examples being shown in Nos. 28,482, 28,081, 24,7 91, 20,430, and 10,716 of United States Letters Patent, and I do not claim any such construction; but I do believe that I first invented a cooking-stove with the air-space I J, oven D, fire-chamber A, draft-chamber C, fire-flues E E E, damper W, and apertures or air-passages 0, p, q, and 'r, all arranged together in the particular manner hereinbefore specified, and shown by the drawings hereunto annexed.

The partitions or deflecting-plates d d, Figs. 1 and 5, are arranged in the upright portion I of the continuous air-space I J, and extended from the end plates, 0 c, at places below where the fresh air enters the ends 8 s of that air-space inward and upward to or toward the horizontal air-space J over the oven, in order to insure the passage of the comparatively-cool air which enters the ends of the space I upward, toward, or into the horizontal air-space J, and thereby cause the newly-admitted air to become more highly heated before it can circulate through the hot-air fiuesI J and oven D in either direction.

What I claim as new and of my invention in the above-described improved cookingstove, shownby the annexed drawings, and desire to secure by Letters Patent, is'

1. The arrangement of the apertures or airpassages r, 0, p, and q, in combination with the continuous air-space I J, oven D, firechamber A, draft-chamber O, and fire-fines E E E, provided with a valve or damper, W, as herein specified, and shown by the drawings hereunto annexed.

2. The arrangement of the deflecting-plates d d in the upright portion of the continuous air-space I J, arranged with the oven D, firechamber A, and fire-flues E E E, and having communication with the open air, the oven, and the fire-chamber above the fuel by the apertures or air-passages r, 0,19, and q, respectively, as and for the purpose herein shown and specified.

EDMUND J. OBIDGE.

Witnesses:

JONAS MULLENs, JOHN EATON.

Images