US1490403A - Electric stove - Google Patents

Description

J. H. REICHART ELECTRI C STOVE Filed March 17! 1922 2 Sheets-Sheet l INVENTOR Jmvzs M Ema/mt;

A TTORNEYS Patented Apr. 15, 1924.

UNITED STATES PATENT OFFICE.

JAMES H. REICHALRT, or MUNCIE, INDIANA, ASSIGNOR TO THE EXCEL ELECTRIC COMPANY, or MUNGIE, INDIANA.

ELECTRIC STOVE.

Application filed March 17, 1922.

To all whom it may concern:

Be it known that I, JAMES H. REICHART, a citizen of the United States, and a resident of Muncie, county of Delaware, and State of Indiana, have invented a certain new and useful Electric Stove; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to an electric stove and the chief object of the invention is to construct a stove of the fewest number of 5 parts and these in the most economical manner, whereby an electric stove may be constructed which can be marketed for a price substantially that now received for tireless cookers.

Another object of the invention is to construct the cover of the stove in such a manner that said cover can be positioned within the stove chamber in any desired position and in this manner regulate the volumetric capacity of the stove.

Another object of the invention is to construct the cover of. the stove so that the same is not only detachable therefrom, but when detached may be inverted and used as a broiling or frying element.

Another object of the invention is to construct the heating element in a simplified manner and a further feature of the invention is to mount said heating element in a manner such that the same may be readily attachable to and detachable from a support for inspection and repairing purposes.

The several features of the invention are those which accomplish. the foregoing objec'ts as well as other objects hereinafter to be described.

The full nature of this invention will be understood from the accompanying drawings and the following description and claims.

. In the drawings Fig. 1 is a central cross sectional view of the stove. Fig. 2 is a top plan view of the cover and the stove. Fig. 3 is a side elevational view of the cover showing the same inverted and supported upon a stand, the latter being broken away in sections for clearness. Fig. 4 is a plan view of one of the heating elements and the supporting members associated therewith. fig. 5 is an elevational view of the same.

Serial No. 544,498.

lindrical casing 13 and said casing extends beneath the chamber forming tube and is provided with an annular groove 1 1. The annular groove 1 1 is adapted to receive the projecting portion 15 of the spring flanges 1G integral with a closure plate 17. The closure plate 17 is of substantially the same diameter as the casing 13 and, therefore, will be yieldingly retained within said casing by the groove 14 as illustrated in Fig. ,1 and will permit, 'by forcible movement, the ready removal therefrom.

The upper edge of the tubular casing 10 herein is illustrated as turned outwardly to form a. peripheral flange 18 which is seatable upon an annular channel member 19, which in turn is seatable upon and suitably secured to the tubular casing 13. The casing 13 is provided with one aperture 20 within the base thereof and said aperture is adapted to receive an insulated bushing 21 which permits the introduction of a current carrying cord construction 22. The current carrying cord construction 22 terminates within the casing 13 and beneath the inner and heating chamber forming base 11 and above the detachable closure 17 and is detachably connected to a heating element positioned between said base and closure at 23. Herein the heating element is shown secured to the inner and heating chamber forming base and inasmuch as a second heating element is similarly secured to the cover construction hereinafter to be described, and since both of said elements are similar in construction, the descriptions of the separate support thereof and of the heating elements per so will be hereinafter given.

The stove body portion herein described has its otherend closed by a detachable cover construction and said cover construction comprises a base 25 and a frustoconical side 26 which terminates in a cylindrical side portion 27 having an annular groove 28 formed therein. Within the annular groove is seatable a split spring wire 29. The top 30 of the cover is suitably dished, as illustraled, and supports a handle 31 by means of a pair of angular brackets said brat-l: ets being suitably supported by the top 30 as by riveting and adapted to support the handle 31 by a rivet pin.

The cover 30 is provided with a pair of terminals 33 which project upwardly therefrom and said terminals are in spaced relation with each other to be received by a socket forming plug Ell of the conventional type, which socket forming plug is connected by means of cord 35 with a source of electrical energy. Herein said cord con struclion is shown as associated with the cord construction 2-2 and both cord constructions may he in parallel or in series, but preferably are connected in parallel either at the junction of said cord construct-ion or adjacent the terminal plug indicated generally by the numeral 36. Each of the terminals 33 are insulated from each other and from the top 30 by means of the insulating bushings 3?. and the studs or terminals 33 within the hollow cover carry a plurality of wire retaining members, such as the nuts 38, whereby the current carrying wires 39 are detachably associated with a heating element at 40.

is positioned within the cover construction and is suitably secured thereto in a manner hereinafter to be described. Thus, the heating element is protected from casual injury as well as corrosion. The cover construction, by means of the frustoconical side wall for some reason or other provides that better results are obtained than if the cover were provided with a cylindrical side wall. Any tapering or curved construction, however. may be substituted for the ti'ustocon ical construction without departing from the broader features of this pointof the invention. As shown clearly by the full lines in Fig. l. the wire clip or split coil 29 normally projects beyond the periphery of the cvlindrical side port-ion 2? and is adapted to retain the cover in the elevated position to close the stove and cooking chamber thereof. When it is desired to reduce the capacity of the stove the cover is forcibly projected into the tubular casing 10 and is retained in the adjusted position by means of a yielding construction, such as the split wire 29 hereinbefore described. In this manner the capacity ot'the stove may be adjusted and likewise the eliiciency of the stove will be increased, since the heat required by the smaller volume will be less than that required by the larger volume. The dotted lines in Fig. 1 illustrate the aforesaid conditions.

When desired the plug 34- may be detached from the terminals 33 and then the heat supplied to the stove will be only that furnished by the lower heating element. Suitable switch means may be provided whereby the heat may be supplied from the cover enclosed heating element without being supplied by the lower element, but herein such a construction is not shown.

In Fig. 3 another feature of the cover construction is illustrated and in said figure the cover construction is shown as associated with a skeleton stand -l-i and said stand maintains the cover in the inverted position such that the base 25 is positioned upwardly with the top positioned beneath. The handle 31 is also shown in the inverted position as well as the plug 34 and the terminals33. The cover, when thus inverted and attached to the plug 34, is adapted to be used for heating purposes, such as frying and the like and herein a frying pan or skillet 42 is shown positioned upon said cover.

The cover, as well as the stove, is provided with suitable heat insulating means such as mineral wool and the like and herein said heat insulating means is shown in the cover and indicated by the numeral 43 and in the space between the concentric containers by the numeral 44 and in the base portion of the container 13 by the numeral 45. Thus the only non-insulated surfaces in the stove are those through which heat is transmitted to the heating chamber.

Reference will now be had to Figs. 4, 5, 6 and 7, as well as to Fig. 1. It will be remembered that the support for the heating element and the heating elements themselves are similar. Herein the heating element is shown in its simplest form and comprises an insulating base 46 and this base may be of asbestos fibre board which includes not only insulating qualities but is highly resistant to heat and is not fragile, such a porcelain or bakelite and. of course, is not inflammable, thereby differing from the usual fibre hoard construction. The heating element is a helix -17, the ends of which are connected to the terminals 23 or 40. Herein the board is shown circular in outline and the helix is distributed upon said board so that the heat discharged from the helix will be reflected by the board with relative uniformity. The board is provided with a plurality of apertures a8 and herein the helix is suitably secured at points along the same by cotter pins having the eyes 29 and the body portion 50, as well as the angular ends 51. In securing the helix to the board 46 the cotter pin is open and the same is passed transversely through the helix so that one portion of the same is receivable by the eye 49 of said cotter pin. The portion 50, together with the ends 51 are passed through the opening -18 in the board 46 and said ends are then separated and turned angularly, as shown, to secure the helix to the board. From the foregoing it will be noted that the electrical heating element or device is exceptionally simple and exceptionally economical to manufacture and is well nigh indestructible both while in operation and during the process of construction.

The means for securing the heating device hereinbefore described to the base 25,

or the base 1.1, comprises a plurality of supports. Said support is illustrated in perspective in Fig. 6 and as shown, is comprised of an angular bracket having a base portion 52 provided with an aperture 53, and by means of the rivets 54 said bracket is rigidly and permanently secured to the base 11. or 25. The same may be detachably secured, if desired, by bolt and nut means, but this construction is not contemplated for the detachable feature is otherwise secured. The angular or spacing portion 55 is cut away at 56 to form a ledge and intermediate said ledges is a tongue 57 The board 46 is suitably apertured at 58 to receive the tongue 57 and said tongue is passed through said aperture until the shoulders 56 engage the board and prevent further passage thereof.

Thereafter the tongue 57 is bent angularly of the portion 55 and thereby secures the board 46 in rigid relation with respect to the base 11 or and in spaced relation therewith so that the heating element, since the same is secured to the board by means of the cotter pin construction, prevents short circuiting of the heating element.

If for any reason the heating element re quires removal, the tongues 57 are straightened and the plates or boards 46 thereupon are readily removable. Ready access may be had by means of the closure 17 to the bottom heating device, while the top heating device is similarly accessible when desired.

The invention claimed is:

1. A reversible cover for an electric stove comprising an enclosing casing having a base, and an electric heating device within the casing.

2. A reversible cover for an electric stove comprising an enclosing casing having a base, an electric heating device within the casing, and terminal means supported by said casing and projected therefrom and connected to said heating device for detachable connection with the source of elec trical energy. I

In witness whereof, I have hereunto aflixed my signature.

JAMES H. REICHART.

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