US268718A

US268718A - John b

Info

Publication number: US268718A
Authority: US
Publication date: 1882-12-05
Anticipated expiration: 1899-12-05

Description

(No Model.) v J. B. OLD'IBRSHAW,

HEATING STOVE.

No. 268,718, I Patented so. 5, 1882. ||E I- --r-us 15-" ilhogmpher. Wnhington n c f UNITED STATES PATENT OFFICE.

JOHN B. OLDERSHAW, OF BALTIMORE, MARYLAND.

H EATING-STOVE.

- SPECIFICATION forming part of Letters Patent No. 268,718, dated December 5,1882,

Application filed August 14, 1882. (No model.)

To all whom it may concern Be it known that I, JOHN B. OLDERSHAW, of the city of Baltimore, in the State of Mary- ]and, have invented certain Improvements in Stoves,of which the following isaspecification.

The object of' this-invention is to increase the heating capacity of a stove and to equalize the temperature in all parts of the room in which the stove is situated.

In carrying out my invention, as hereinafter fully described, I provide the stove with an air-duct having its inlet end near the bottom of the stove and its outlet end terminating in a hot air chamber covered by a perforated plate situated over the magazine. The coldest stratum of air in the room, which is necessarily on the floor, enters the air-duct, becomes heated, passes to the hotair chamber, and thence through the perforated cap-plate again to the room. By this means thehot air in .the room is gradually depressed to take the place of the colder body which rises through the duct, as described. The result of this circulating movement of air is the gradual equalization of tem- 2 perature of the whole body of air in the apartment. I

In the further description of my invention which follows, reference is made to the accompanyingdrawings, forming a part hereof, and

0 in which- Figures I and II are respectively an exterior and a sectional "iew of the improved stove, iookingfrom the same point. Fig. III is a top view of Fig. I; and Fig. 1V is a section of Fi 5 II, taken on the dotted line my.

Similar letters of reference indicate similar parts in all the views. a

A is the casing of the stove, and B is the a grate.

0 i O is the fire-chamber, and D the ash-receptacle, in which the ash-pan a is situated.

E is the magazine, having a feed-opening, b, and c is the exterior feed-door in the casing of the stove, opposite to the opening b. The top 5 of the magazine has a small aperture, cl, for

the escape of gases to the fire-chamber G.

F is thehot-air chamber, which is considerably less in diameter than the upper section of the casing A, in order to forman annular space, 0, from which the stove-pipe f extends. The hot-air chamber is surmounted by an ornamental perforated cap plate, G, through which heated air escapes to the room.

The air-duct is represented by H, and it may be formed either by part of the casing A, as shown in the drawings, or by an independent pipe. In either case it discharges air to the interior of the hot-air chamber, as shown in the drawings.

In Fig. 11 the direction of movement of the Go gases and other products of combustion is indicated by arrows in broken lines, and that of the air by arrows in full lines.

The stove is provided with the usual doors and other necessary devices; but these are of ordinary design and need no special description herein.

It will be seen that the heated gases and smoke, in their passage to the annular space around the hot-air chamber, strike against the under side or bottom of the said chamber, and the air therein is thereby heated to some ex tent independently of the hot-air duct. By this means a more rapid movement of air is effected than if the circulation were caused by: 7 5

rarefaction in the duct alone.

I claim as my invention In a stove, the combination of a fire-chamher, amagazine situated within the said firechamber, with a space around and over it for the exit of gases and other products of cornbustion, a hot-air chamber or reservoir suspended over the said magazine and separated by a space from it, and having an annular inclosed space around it, into which the said 8 gases are delivered before being discharged to the smoke-pipe, and provided with a perforated cover and a duct or pipe to carry air from near the bottom of the stove to the lower part of the said hot-air chamber, substantially as and for the purpose specified.

JOHN B. OLDERSHAW.

Witnesses E1). J. Dress,

WM. '1. HOWARD.