US148419A - Improvement in stoves - Google Patents

Description

UNITED STATES ULYssEs E. onoFUT, THoMAs J. cHAsE, AND HUMPHREY D. TIFFANY, oF

PATENT OFFICE..

NICHOLSON, PENNSYLVANIA.

IMPROVEMENT IN STOVES.

Specification forming part of Letters Patent No. 148,419, dated March 10, 1874; application filed f January 24, 1874.

, declare the following to be a full and exact description of the same, reference being had to the accompanying drawings forming part of this specification, in which- Figures l and 2 are vertical sections taken on lines at right angles with each other; and Fig. 3 is a horizontal section, showing the con struction of the fire-pot.

Similar letters of reference in the accompanying drawings denote the same parts.

This invention relates to that class of heaters in which cold air is taken from beneath the stove and carried upward around it, said air being heated in its upward passage by contact with the stove, and conveyed by suitable means to other apartments. To this end our invention consists in constructing the walls of the fire-pot of vertical tubes, made tapering ends with a hot-airvchambcr, said air-chambers being provided with suitable connections for admitting air from the bottom, and conveying it away from the top after it has been heated by its passage through the tubes of the tire-pot.

In the drawings, A represents the fire-pot, composed of a circular rowv of vertical tubes, a., placed in close contact with each other, and being of uniform size for a portion of their length, and from thence tapering to the upper end, as shown. The tubes a do not extend entirely around the rire-pot, a'space, D, being left at the front of the stove, this space being lilled by a piece of corrugated iron. E represents the feeding-door. B represents a cold air-chamber, at the bottom of the stove, sur rounding the ash-pit, and provided with vertical flues or passages C, the latter extending downward through the tloor of the apartment in which thestove is contained. F represents the hot-air chamber, located at the top oil the stove, and communicating with the coldair chamber through the vertical tubes c. It will be seen that cold air passing into the chamber B, through the ilues C, is caused to tlow upward through the tubes a, around the re-pot, and will naturally become heated in such passage, the tubes a being in close contact with the iire, and offering a large extent of heatingsurface to the air passing through. The heated air accumulating in the hot-air chamber F is conducted through a suitable flue, G,

to other apartments. The tapering portions of the tubes a are enclosed in a drum, H, which is separated from the hot-air chamber F by a horizontal partition, I. A rim or iiange, J, projects inward from the lower end of the drum H, said rim inclosing the tubes a. The tubes avare in close contact with each other, and of uniform size below the rim J, this portion constituting the magazine or re pot proper. Should this arrangement be continued the entire length of the tubes, it would be necessary to introduce a smoke-pipe through one or more of them. By giving them a tapering form, however, above the, rim J, wedgeshaped spaces K are created, through which spaces the products of combustion escape and pass out through an ordinary smoke pipe, K. y

The tapering construction of the cold-air flues a a also allows'the productsof combustion to pass between the outer cylinder of the stovel and the air-pipes through the wedge-shaped spaces K K, thus thoroughly heating the air in the tubes a a. And a further advantage of the tapering form of the upper part of the airpipes is gained, as the passage of the air is retarded by contracting or tapering the tubes7 thereby allowin g the air to become more highly heated thun in the ordinary construction, by being longer acted upon by the products of combustion.

Te cla-i111 as our invention-- The combination of the cold-nir chamber B, having eo1duir lues G C und vertical tubes a` a. in close Contact, near their lower ends, to form the tire-pot A, seid tubes a a being` made tapering at their upper ends to retard the pas sage of the air in them, and ufl-ord Wedgeshuped openings K K for the passage of the products of combustion, hot-air chamber F,

and drum II, the Whole being arranged, cou-

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