US1263181A - Electric stove. - Google Patents

Description

.8. G. WINGER.

ELECTRIC sovE.

APPLICATION FlLED DEC. l l. 19H.

1,263,181 Patented Apr. 16, 1918.

f l rlhe legs 3 have attaching-.plates .4 and" .UNITED STATES PATENT onnion. j

s'rovER o. Winona, orv Los ANGELEs, .CALIFORNIA g ELECTRIC STOVE.

Patented Apr. 16, 191s,

Appiitatiqn mea December 11, 1917. 'serial No. 206,671.

To all whom t may concern."

Be it known that I, STOVER C. WINGER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles.

and State of California, have invented new and usefullmprovements in Electric Stoves, of which the following is a specification.

. My object is to make an electric stove' for cooking, heating, and the like, having simple means for .regulating the heat, and

my invention vconsists inl'the novel features herein shown, described and claimed.

Figure 1-.is a perspective of an electric cook stove'embodying the principles of my invention. f

Fig. 2 is an enlarged top plan view, parts being broken awayand shown in section.

Fig. 3 is a verticalsectional detail onthe lines 3 3 of Figs. 2 and 4.

Fig. 4 is a front elevation-"partly in section looking in the direction indicated by the arrow 4'inFig. 2. -A

The frame bars. 1- and 2 areI substantially square in cross section and extend-from end to end along opposite sides vof the stove.

iianges 5 fitting upwardlyfagainst the bot toms of the "ends of thej-"bas1'and'2, the legs being secured rigidly Vto the bars by screws 6 inserted through the legsv and `tapped into the bars. A rectangular sheet .metal plate 7 is inserted downwardly and rests upon the anges 5 to form a bottom for supporting the heating element.l Insu.

lations 8 and' 9 are formed by bending sheets of asbestos to iit the outer sides, the upper sides, and the inner sides of the bars 1 and 2 from end to end. The copper electrodes 10 and 11 are formed of sheet copper bent to fit the outer sides, the upper sides, and the inner sides of the insulations 8 andv 9, the electrodes being out short on the inner sides.

A heavy sheet of asbestos insulation'12 is placed upon the bottom plate 7 and the inneredges of the electrodes rest upon this insulation. The hot plate 13is a rectangular `steel plate bent downwardly lalong its four edges to form flanges 14, the side ones of the flanges 14 fitting directly against the outer sides of the electrodes 10 and 11,. and

the steel plate has enamel coating 15 and 16 upon its upper and lower facesto insulate the steel from the electricity. The chamber 17 below the hot plate 13 is filled with a heating element 18 composed of granulated under the wedge 23 I v carbon, thecarbon being in direct Contact4 with theinner sides of the electrodes 10 and.

11 andthe lower-face of the hot plate13 resting upon the carbon between the elec'- 'trodes A 'binding' 19 extends entirely around the outer faces of the flanges 14 and f is securedin place by screxvs20 inserted through the binding and the intermedi-ate parts and tapped into the bars 1 and 2, care beingstakenl that the openings 21 through the vouter sides of the enough to insulate the electrodes :from the screws. A iange 22fexte'nds inwardly all around thev stove from the vupper edgewof the binding 19 over the corners 'of the hot plate 13, said binding and flange serving to holdthe parts all securely together.

A wedge-shaped block 23 is spot-welded to the bottom face of the bottom 7 at its center, the taper of the Wedge extending crosswise of the stove. A lever 24jis .inserted through theopening 25 in the binding 19 at the back of the stove and extends opening 26 in the binding 19 attheffront lof the stove, and a handle 27 extendsforwardly `:'r'om the lever,

leverbearing upwardly again'stthe beveled:

the central portion of the face 28 of the wedge, so that when the lever is swung to the left, as in F ig." 2, the bottom 7 may spring downwardly to its normal position thereby appreci'ablydecreasing the pressure upon the carbon granules forming the heating elementv 18, and when 4the handle 27 is moved to the right, the leverv 24 presses upwardly on the wedge 27 thereby pressing the bottom 7 upwardly and compressing the carbon at the center oi' the hot plate 13. In this manner the temperature of the hot plate at the center and'radiating from the center may be accurately regulated.

The electric socket 29-is attached tothe binding 19 atthe back side of the stove and the wires 30 and 31 extend from the` socket to the ends of the electrodes 10 and'll. `The electric plug 32 is removably mounted'in the socket 29 and the wires 33 leadfrom the plug. The circulation of electricity vis through the wires 30 and 31 to the electrodes 10 and 11 and through the heating element 18 'from one electrode to the other.

The heating element 18 will distributel electrodes are large upon the density and volume of the carbon, and under a given voltage and 'am erage the temperature may be accurately a justed to the needs by manipulating the handle 27 to regulate the pressure upon the carbon.

The principles'of my invention may be applied to cook stoves,. as shown and described, and they may also be applied to heaters, toasters, and especially to waffle irons, the idea being that each member or iron will be supplied with a heating element, the two irons being hinged together and brought together face to face as is usual.

While Ihave shown' the preferred construction of my electric stove as now known to me7 it will be understood by tliose skilled in the art that various changes in the oombination, construction and arrangement of parts may be made without departin from tlie spirit Qmy invention as claime p I claim:

1. In a stove, a flexible sheet metal bottom, an insulating box resting upon the bottom, carbon dust filling the insulating box,

electrodes extending along opposite sides of the carbon dust, an insulated hot plate resting upon the carbon dust, and means for raising and lowering the center of the bottom plate to regulate the pressure upon the carbon dust.

2. In a stove, a iexible sheet metal bottom, an insulating box resting upon the bottom, carbon d ust filling the insulating box, electrodes extending along opposite sides of the carbon dust, an insulated hot plate, resting-up0n the carbon dust, and r'neans for raisin tom p ate to re ulate'tlie pressure upon the carbon dust an to regulate the pressure of thecarbon dust against the hot plate.

3. A iexible bottom, an insulating" box resting upon the bottom, electrodes extending along opposite, sides of the insulating box, carbon dust illin tlie box and contacting with the electr es, an enameled hot plate resting upon the carbon dust, a wedge secured to the bottom plate near its center,

and a lever mounted to engage the wedge;A

so that by manipulating the ever the pressure upon the carbon dust' and the pressure of the carbon dust against the hot plate may be regulated.

and lowering the center of the bot-- In testimony whereof I have signed my i name to this specification.

STOVER o. WINGER

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