US183033A - Improvement in heating-stoves - Google Patents

Description

T. WHITE.

HEATING-STOVE.

Patented 0ct.10. 1876.

JAMES R OSGOOD 8: CO BOSTON LTN TED STATES PATENT OFFIo.

; THOMAS WHITE, 0F QUINCY, ILLINOIS.

'IMPROVEMENT m HEATING-STOVES.

Specification forming part of Letters Patent No. 183,033, dated October 10, 1876; application filed a June29, 1875.

To all whom it may concern:

Be it known that I, THOMAS WHITE, of Quincy, in the countyof Adams and State of Illinois, have invented an Improvement in Magazine Heating-Stoves, of which the following is a specification:

The object of my invention is to supply a volume of air to the combustion chamber through the double wall of the magazine at or near the temperature of the gases of combustion and it consists in the combination of the direct and revertible fines, and anair-pipe arranged within the exterior flue, with its lower end near the floor and its upper end connecting with the upper end of the air-space; and, further, in the peculiar damper at the upper end of the said air-pipe, all as more fully hereinafter explained.

Figure 1 is a vertical section of a revertibledraft base burning stove fitted with my improvement. Fig. 2 is a horizontal section at m as, showing the hot-blast register-slide.

In the drawing, A represents the ash-pit, B the fire-pot, O the combustion-chamber, and D the magazine-section, of an ordinary magazine stove, in which the magazine E is suspended from the top, access to which is had by removing the cover a. F is a casing suspended from an annular flange, b, in the upper part of the magazine-section. It incloses the magazine proper and terminates just below its lower end in a row of inwardly-curved fingers, c, the arrangement of the magazine and its casing being such that an annular cur rect-draft flue, as shown.

I disclaim the invention of a stove constructed as above described, as also the invention of a double-walled magazine, or of the casing which incloses it, except the arrangement or combination of the inwardly-curved fingers at the lower end, extending below the mouth of the magazine proper, which I believe to be new and original with me. The description of the old parts are introduced merely for the purpose of illustrating the nature and application of my invention.

Into the lower end of the back line I entera tube, I, whose lower end is flaring and extends nearly to the floor. This tube may extend upward in the back-flue to a point above the plane of the direct-draft flue, as indicated by the dotted line, or, as shown, it may be simply an air-inlet to the lower end of the back flue. In either case it is continued from a point j ust above the flue G upward to a point above the flange b, thence horizontally into the annular chamber surrounding the magazine proper. At the inner end of the air-pipe there is a damper, f, which can be used to regulate or shut off the influx of air.

The draft of the stove causes a column of cold air and the heavier gases in the apartment to be drawn up through the tubes I into the top chamber of the stove, thence down between the magazine and its casing, and discharged in highly-heated jets from the lower end of the latter, mingling with the gases of combustion at such an elevated temperature as will retard their passage, and promote and secure their immediate and perfect combustion.

If cold air were taken directly into the space between the magazine and its casing, as has heretofore been done, it would not be raised sufficiently in temperature before min glingwith the gases to allow them to ignite, but would lower the temperature of the Whole volume of mixed air and gases, and retard the ignition until again raised to the proper temperature, if an opportunity were afforded, before finding an exit from the combustion-chamber hence the necessity of heating the influent aircurrent before it enters the magazine-casing, which is effected in the manner described, the air-tube in the back flue beingeither continuous or interrupted, as shown. In the latter case the cold air drawn in mingles directly with the gaseous products of combustion that ascend the back flue, and is raised in temperature before an equivalent volume is withdrawn at the top of the back flue to supply the downward draft in the magazine-casing.

The coal cannot lodge orchoke at the mouth of the magazine by reason of its swelling in the process of coking, as the influent currents at that point secure its combustion, after which it settles down into the fire pot, and thus allows the fuel to feed the fire as required.

What I claim as my invention is- 1. In a heating-stove, with an incased magazine, and an exterior flue adapted for direct and for revertible draft, and in combination with the direct and revertible flues, the air-pipe 1, arranged within the exterior flue, with its lower end near the floor and its upper end connecting with the upper end of the airspace between the double walls of the magashown.

THOMAS WHITE.

Witnesses:

ALFRED VANCE, D. MOAFEE.

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