USRE181E - Improvement in portable furnaces - Google Patents

Description

*FGVES & FURNACES. fa s, Cooking, surpm f, Stove top supportedyf f f i v M. F. POTTER! Portable Furnace.

Reissued Oct. 22, 1850.

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IMPROVEMENT IN PORTABLE FURNACES.

Specification forming part of Letters Patent No. 7,039,

dated January 22, I850; Reissue No. IS], dated October 22, 1850.

Figure 1 represents a perspective view of one half of the furnace, the other half being cut 011' by a vertical section through its center.

in order to show its interior., The furnace is I a cookstanding over one of the boiler-holes of ing-stove, a section of whose upper flue is represented by M N. Fig. 2 represents the furculinary 5 nace standing on the bottom vessel when used 1 separately from a. cooking stove.

same parts.

The furnace may consist of metal pot, A B U l), in external form like the ordinary portable furnace, but without a 5 placed a second "es- The in- I n'er vessel is so placed tha-t its upper edge bottom. Inside of this is sel, E F G H, nearly similar in form.

one, the two being connected together in any convenient way. The inner pot is less in diameter thawthe outer one, so as to leave a small space all around between the vessels. This space constitutes a descending or The inner pot has a close bottom, 0 d, above which is placed a coal-grate, ff, and from the space between the bottom and the grate a small airflue, e, passes out through the side of the outer pot. 0n the top of the outer a cylindrical I vessel is I placed a ring for receiving the sunk bottoms of culinary vessels. This ring may be furnished with a lid, or exchanged for a flat plate when convenience requires, as shown in Fig. 2. The intention of this furnace is for use in connection with the ordinary cooking or other stove. When, therefore, it is to be used, it'is to be placed over one of the boiler or other holes, as shown by J K, Fig. l. Fire is kindled upon the grate/"f, and a cookingvessel placed upon the top. The heat and smoke will pass under the vessel or cover. turn over the top E H, and pass downward into' the line M N of the stove at the boiler or other hole, and thence into the chimney.

In describing my turn-ace as circular with concentric flue. [do not intend to limit myself to thatparticular shape, but claim the right The same letters in both fi ures refer to the to make it of any shape convenience may re- 5 quire, so long as I adhere to the essential feature of my inventionviz., the adaptation of a furnace to the boiler or other hole of a stove as described.

I claim as my inventiou The construction of a portable furnace, which it may the manner described that is, a furnace adapted to the boiler or other hole of a stove, with a downward draft or diving flue for the escape of the smoke through the bottom into the stove, substantially in the manner and for diving the purposes set forth.

ME RRITT F. POTTER.

be connected with a stove ii;

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