US852338A - Electric stove. - Google Patents

Description

PATENTED APR. 30, 1907.

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ELECTRIC STOVE.

APPLICATION IILBD PEB.18, 1907.

UNITED STATES PATENT OFFICE.

ALBERT L. MARSH, OF LAKE BLUFF, ILLINOIS, ASSIGNOR TO IIOSKINS CO., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

ELECTRIC STOVE.

Specification of Letters Patent.

Patented April 30, 1907.

To all 'LU/I/(HI'I/ it 711/11 colwcrm Be it known that I, ALBERT L. MARSH, a citizen of the United States, residing at Lake Bluff, in the county of Lake and State of Illinois, have invented a new and useful Improvement in Electric Stoves, of which the following is a specification.

The object of my invention is to provide a novel construction of portable electric stove or heater, which shall adapt it, more particularly, for table use in preparing food to be. served, and which shall peculiarly adapt it for use as a toaster.

In the accompanying drawing, Figure 1 is a plan view of my improved stove, and Fig. 2, a section taken at the line 2 on Fig. 1 and viewed in the direction of the arrow.

The body of the stove, which is preferably of the circular form illustrated, consists of a metal ring 3 having inturned flanges 4 at intervals about its lower edge; a disk-shaped block 5 of fire-clay, or other suitable refractory material, having a spiral groove 6 formed in its upper surface and fitting inside the ring 3, in which it seats upon the flanges 4; and electrical resistance wire 7 laid in the groove and tacked at intervals in the base thereof, with the ends of the wire passing through the block 5 and connected with a flexible conductor 8 carrying on its free end the usual plug (not shown) adapted to be illserted into the socket of an incainlescent electric lamp for-furnishing the current to heat the wire 7. This wire is shown in helical form to resist warping and tendency to fracture un der the strains of expansion and contraction to which it is subjected, and I prefer to use for my purpose wire made in accordance with the invention forming the subject of United States Patent No. 811,859, granted to me February 6, 1906, because of the high degree of resistance afforded in a comparatively short length of the wire, and because of its quality of withstanding high temperature.

The body is supported on legs 9 fastened to the flanges 4, with interposed strips 10 of insulating material, these legs rising from a base 11, the preferred construction of which is that of a metal ring 12 having an inturned annular flange 13 through which the footportions of the legs are fastened to the base, with a disk 14 of nonheatconducting material seating against the under side of the annular flange and secured by the fastening means for the legs. Thus the base affords an air-space underneath it, which, with the disk 14, renders it non-conducting of heat to a degree that enables the stove to' be used on the polished surfaceof a table without danger of injury to the latter from the heat radiating from the body, which is very great.

A circular grid 15 is reinovably and adjust ably ,supported over the top of the stovebody at a depending arm 16 fitting in a socket 17 provided on the outer side of the ring 0 and containing a spring 18, to permit the grid to be raised and lowered and held in adjusted position by the pressure of the spring in the socket. The grid affords a support for any utensil adapted to be imposed on it for cooking its contents, and it also affords a toasting-attachment.

On one of the legs is fastened a handle 19, of insulating material, containing an electrical switch, that used being preferably of the common pushbutton variety, represented at 30, connected with the conductor 8 for shutting off the current from the heater.

ln use, with the current let on, the wire 7 soon becomes highly heated, heating the walls of the spiral groove (5 to a glow, and the heat radiated from the wire and block 5 suffices for the cooking, heating and toasting purposes for which my improved heater is especially designed.

What i. claim as new and desire to secure by Letters Patent is 1. .ln an electric stove, the combination of a block of refractory material provided on its outer surface with an uncovered groove, an electrical resistance conductor confined under exposure to the atmosphere in said groove, and terminals, with which said conductor is connected, for coupling it to a. supply of current.

l. in an electric stove, the combination of a block of refractory material provided about its outer surface with a spiral uncovered groove, an electrical resistance conductor confined under exposure to the atmosphere in said groove, and terminals, with which said conductor is connected, for coupling it to a supply of current.

3. In an electric stove, the combination of a block of refractory material provided about its outer surface with a spiral uncovered groove, a helical electrical resistance wire laid along and confined under exposure to the atmosphere in said groove, and terminals, with which said wire is connected, for coupling it to a supply of current.

at. In an electric stove, the combination of a block of refractory material provided about its outer surface with an uncovered groove, an electrical resistance conductor conlined under exposure to the atmosphere in said groove, terminals, with which said conductor is connected, for coupling it to a supply of current, a handle on the stove, and an electric switch on the handle.

5. In an electric stove, the combination of said base, a block of refractory material within said ring and provided on its upper surface with an uncovered groove, an electrical resistance conductor conlined under exposure to the atmosphere in said groove, and terminals, with which said conductor is connected, for coupling it to a supply of current.

(5. In an electric stove, the combination of a heat-insulating base, a metal ring on supports rising from said base, a block of refractory material seated in said ring and provided on its upper surface with a spiral uncovered groove, a helical electric resistance wire laid along and confined under exposure to the atmosphere in said groove, and terminals, with which said wire is connected, for coupling it to a supply of current.

7. In an electric stove, the combination of a body having a block of refractory material provided on its upper surface with a groove, an electrical resistance element confined in said groove, terminals, with which said conductor is connected, for coupling it to a supply of current, and a support surmounting said block.

8. In an electric stove, the combination of a heat-insulating base, a metal ring on supports rising from said base, a block of refractory material seated in said ring and pro vided on its upper surface with a spiral jgroove, a helical electrical resistance wire a base, a metal ring on supports rising from i ll l I laid along and confined in said groove, ter minals, with which said wire is connected, for coupling it to a supply of current, and a grid adjustably supported to surmount said block.

ll. An electric stove comprising, in combination, a heat-insulating base, a metal ring on supports rising from said base, a block of refractory material seated in said ring and provided on its upper surface with a groove, an electrical resistance conductor confined in said groove, terminals, with which said conductor is connected, for coupling it to a supply ol' current, a handle on said ring, and an electric switch on the handle.

ALBERT Ii. MARSH.

In presence of R. A. ScnAEFER, J. 11. LANDEs.

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