US136783A - Improvement in summer furnaces - Google Patents

Description

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W. P. SPRINGER Summer Furnaces.

N0. 136,783 PatentedMarchH,18 73 WITNESSES- INVENTOR- I QhaQ/gA AM, PHOTO-LHHOGRAFHIC no N Masenmvsls mums) 2Sheets-Shee t 2 W. P. SPRINGER.

Summer Furnaces.

No, 136,783. PaitentedMarchHJ873.

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WILLIAM P. SPRINGER, OF OSYVEGO, NEWXORK.

' IMPROVEMENT IN SUMMER FURNACES.

Specification forming part of Letters Patent No. 136,783, dated March 11, 1873.

To all whom it may concern:

Be it known that I, WILLIAM P. SPRINGER, of Oswego, in the county of Oswego and in the State of New York, have invented certain new and useful Improvements in Summer Furnaces; and do hereby declare that the followin g is a full, clear, and exact description thereof, reference being had to the accompanying drawing making apart of this specification, in which- Figure 1 is a perspective view of my device as applied to and used upon an ordinary cooklug-stove, and Fig. 2 is a vertical central section of the same upon a line extending from front to rear.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to enable a small amount of cooking to be done without rendering necessary th e consumption of a large quantity of fuel in order to heat, needlessly, the whole of an ordinary cooking-stove; and it consists in the peculiar construction of the device, by means of which said objects are attained, substantially as is hereinafter specified.

In the annexed drawing, A and A represent the side plates, B the front plate, 0 the rear plate, and D the top plate, of a stove containing an oven, E, fuelchamber F, and boilerlioles G, all of usual construction.

Fitted into one of the forward boiler-holes G, and extending above and below the top plate D,is acylindrical furnace or supplemental fuelchamber, H, the lower portion'of which corresponds in size toand fills said opening G, while the upper portion of said furnace has a considerably larger diameter horizontally, and, extending outward upon said top plate, furnishes a support for the device. From the rear side, and near the upper end of the furnace H, its wall is extended horizontally rearward, as shown, and, in connection with a top plate, 1, forms a flue, K, which is inclosed at its sides and rear end, and at its front end communicatcs with the space within said furnace. A stud, L, extending from the lower side of the bottom flue-plate l1 downward to and upon the top plate D of the stove,.furnishes a support for the extendedportion of said furnace.

\Vithin the rear end of the top plate I is pro vided an opening, M, surmounted by a collar, m, upon which is placed a pipe, N, that, ex-

tending upward and then rearward, enters the exit-flue O of the stove, and furnishes a means whereby the heated escaping products of combustion may pass from the furnace into said exit-flue. A damper, O, is placed within said flue 0 below its connection with said pipe N, so as to enable communication between the for mer and the interior of the stove to be out 011' when it is desired to use the furnace. The lower end of the furnace H, at its inner side, curves inward so as to form a ledge, h, upon which is placed a circular grate, P, that corresponds in size to the interior of said furnace, and has its lower edge rounded so as to fit into or upon said curved ledge. As thus arranged, the weight of the grate and of the fuel resting thereon will cause it to maintain a horizontal position except when it is desired to dump the contents of the furnace, in which event a slight upward pressure upon one edge of said grate will cause it to assume the position shown in dotted lines in Fig. 2. The addition of a boiler-hole, Q, directly over the center of the furnace, and another, Q, over the flue K, completes the device, the operation of which is as follows:

Suitable fuel is placed upon the grate of the furnace and ignited, and the air required for the purpose of combustion admitted through and controlled by means of the draft-damper of the stove, while the heated gases, passing rearward through the flue K and upward through the pipe. N, find their way into the chimney through the exit-flue 0, having, during such passage, communicated the usual percentage of their heat to the top plate of the furnace and to such cooking utensils as are placed within or upon the same.

As the capacity of the fire-chamber of the furnace is quite small abright effective fire can be produced and maintained within the same with a quantity of fuel so small as to be incapable of ignition, even in the fuel-chamber of the stove, by which means a very great saving in expense is effected over the ordinary method of cooking, when the use of but one or two boiler-holes is required.

When no longer required for use the contents of the fuel-chamber of the furnace may be dumped into the stove, said furnace removed from the latter, and the opening in the pipe or exit flue 0 closed by means of a damper, a, when the stove is ready for nse'in the or dinary manner.

For use in removing the furnace, when heated, suitable perforated lugs or ears R are provided upon its sides and ends.

Having thus fully set forth the nature and merits of my invention, what I claim as new, is-

1. In combination with the lower end of the furnace H provided with the curved ledge h,

the grate P having its lower edge rounded,

substantiallyas and for the purpose shown.

-2 i'sea'sa 2. The furnace H provided with the top plate I, the flue K, the exit-flue M and N, the

grate P, and the boiler-holes Q and Q, when said parts are constructed and combined substantially as and for'the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 20th day of January, 1873.

WM. P. SPRINGER. Witnesses: Guo. S. PRINDLE,

EDM. F. BROWN.

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