US234857A - Cooking-stove - Google Patents

Description

m I. De HAVEN.

Cooking Stove.

No. 234,857. Patented Nov. 30,1880.

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UNITED STATES ISAAC DE HAVEN, OF ALLEGHENY, PENNSYLVANIA.

COOKING-STOVE.

SPECIFICATION forming part of Letters Patent No. 234,857, dated November 30, 1880.

Application filed July 12, 1880. (No model.)

To all whom it may concern:

Be it known that I, IsAAo DE HAVEN, of Allegheny, county of Allegheny, State of Pennsylvania, have invented or discovered a new and useful Improvement in Cooking- Stoves; and I do hereby declare the following to be a full, clear, concise, and exact description thereof, reference being had to the accompanying drawing, making a part of this specification, which represents, in perspective, a stove (partly broken away) illustrative of my present improvement.

My present invention relates to an improvement in that class of cooking-stoves in which a bake-oven is employed. Such stoves commonly have the smokefines and dampers so arranged as to cause the smoke and heat and other products of combustion to pass over the top of the oven, down a rear diving-flue, forward and back under the oven, and thence by an uptake-flue to the stove-pipe or chimney; also, as the heat is greatest on top of the oven, the top plate of the oven has been made double, so as to prevent the too great action or effect of the heat on top of the bread, meat, or other article or articles which are being baked or roasted. In a stove of this class I add the further feature of one or more openings or gas-escape ports, which lead from the interior of the oven through the lower of the two top plates into the intervening space, at a point or points at or near the forward end ot'such space, and by means of such space communicating at the rear end thereof with the smoke-fines.

In the drawing, A represents a cookingstove of any desired style, provided with an oven, B, one door of which is represented at B. The smoke, heat, and other products of combustion pass from the usual fire-chamber at the front of the stove by the top flue, D, and the usual diving and other fines to the pipe-funnel 1). Between the oven and top flue, D, are two plates, to b, or a double plate, having between them a shallow air-space, c, which opens at its rear end into one or more of the flue-passages. The forward end of the space 0 is closed as against the entrance of smoke and gases of combustion from the fire; but in the lower, a, of the top plates of the oven, and at or near its forward end, I make one, two, or more gas-escape ports or openings, 0, through which the gases evolved or generated within the oven by the baking or roasting operations may escape.

As the direction and force of the draft of the lines is past the open end of the space 0, the tendency of such draft will be to draw out or carry off the gases which escape through the port or ports 0, and thereby prevent them from imparting any disagreeable flavor to the food which is being cooked, and also prevent their escape into the kitchen when the oven-door is opened, as is sometimes necessary in order to inspect the work. If small ports or openings are made, as represented, a number of them should be employed; but the number may be lessened by increasing the size, or one or more narrow slits extending crosswise 0f the oven may be used, if so preferred.

I am aware that ovens having a double top plate are not new, and that such ovens have been so made as to admit external air, which, after passing through the oven, has been allowed to pass between such top plates into the smoke fiues or passages; but I am not aware of any prior construction of such an oven with a vent passage or passages from the oven at or near the end of the lower top plate next the fire, and with an opening from the space between the top plates at or near the end of the oven most distant from the fire, and my claim of invention herein is accordingly limited to a construction having such features.

I am also aware of an arrangement of ventpassages somewhat such as is herein described, but in connection with an ash-pit and supplemental fire-chamber, apparently intended for cooking by the direct application of fire heat, as illustrated in Patent No. 6,798; but such arrangement is valueless for ordinary oven purposes, since the only air that could enter to supply the fire in such supplemental chamber must pass downward through the front grate and through the ash-pit, as a result of which such supplemental chamber could not be used for either baking or roasting, and these are the proper functions of an oven; hence by the term oven, as herein used, I mean an oven wherein the fire heat employed for cooking purposes enters the oven proper only by conduction and radiation through and top plates at or near the end. of the oven most from interposed plates, in the usual way. I distant from the fire-chamber, substantially 1 claim herein as my invention- I as set forth. In a cooking-stove having a double-topped In testimony whereof I have hereunto set 5 oven shut off from the draft of the fire through my hand.

the same, and in combination with such an oven, one or more ports or openings, e,through ISAAC DE HAVEN the bottom plate of the double top at or near Witnesses: the end thereof next the fire-chamber, and a R. H. VVHITTLESEY,

1o discharge-opening from the space between the GEORGE H. OHRISTY.

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