US1534823A - Electric table stove - Google Patents

Description

-April 21', 1925. w

. 1,534,823 H. A. ZIOLA ELECTRIC TABLE STOVE Fil'e Ap 25, 1924 s Sheets-Sheet 1 H. A. ZIOLA ELECTRIC TABLE STOVE Fil ed April 2 1924 April 21, 1925.

I s Sheets-Sheet 2 ll-ll.

April.21, 1925. 1,534,823

H. A. zloLA ELECTRIC TABLE STOVE v Filed April 25. 19 5 Sheets-Sheet 5 Patented Apr. 21, 1925.

-UNiTED STATES PATENT OFFICE.

HENRY A. ZIOLA, OF TOLEDO, OHIO, ASSIGNOB TO THE SWARTZBAUGH MANUFACTUR- ING- COMPANY, OF TOLEDO, OHIO, A CORPOBATION OF OHIO.

ELECTRIC TABLE STOVE.

Application filed April 23, 1924. Serial No. 708,842.

To all whom it may concern Be it known that I, HENRY A. ZIOLA, a citizen of Austria, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a new and useful Elec tric Table Stove, which invention is fully set forth in the following specification.

This invention relates to electric cooking appliances, and particularly to those of the table stove type.

The object of the invention is the provision of an appliance of this class which is simple, strong and durable in construction, is easy and inexpensive to manufacture, and has other advantages over appliances of this type heretofore used.

The invention is fully described in the following specification, and while in its broader aspect it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated in the accompanying drawings, in which Figure 1 is a top plan view of an appliance embodying the invention. Figure 2 is a fragmentary sectional view thereof taken through the detachable handle. Figure 3 is a central vertical section on the line 33 in Figure 1. Figure 4 is a bottom plan view of the appliance, with parts broken away. Figure 5 is a perspective view of some of the assembled frame portions of the appliance, with'parts broken away, and Figure 6 is an elevation of one of the legs of the appliance with a control switch embodied therein and with the frame to which the leg is attached fragmentarily shown. 7

Referring to the drawings, 1 designates a ring-like frame part having a depending outer edge flange, and having a shallow' downwardly turned. inner edge flange 2, from which a plurality of equidistant spaced legs 3 depend. Each leg 3 is provided with an inwardly turned foot portion 4, adapted to seat on the end of an adjacent arm of a three armed spider 5. Each foot 4 is provided at its free end with a tongue 6 which is intended to extend down through a registering opening 7 in the associated spider arm, and to be bent under the arm to retain the spider. and ringl in assembled relation,

The spider 5 is formed along each side edge with a depending flange 8 to add strength and rigidity to the spi er.

Each spider armis provided at itsouter end with a. down turned foot portlon 9,

which seats on abottom plate 10, and has a tongue 11 projecting down through a registermg opening 12 in the plate and bent to prevent its Withdrawal therefrom. The plate 10 is provided with an edge flange 13 and is preferably formed with integral depressed portions 14 for strengthening purposes. The frame parts 1, 5 and 10 are preferably stamped from sheet metal for the purpose of cheapness and lightness of construction, and are retained in assembled relation without the use of bolts or other retainmg means than the bendable tongues 6 and 11.

Three main supporting legs 15, which are also preferably stamped from sheet metal, have their upper portions entering between the vertically spaced edges of the plate 10 and outer flange of the frame 1, and extended up at the inner side of such flange'and secured thereto by bolts 16, or inany other suitable manner. The legs 15 extend at their lower ends below the plate 10 and are braced by bracing bars 17, one of which is bolted to the lower end of each leg at its inner side and extends inward and upward therefrom to a central bolt 18, which pro jects centrally through the" plate 10 and spider 5,,and secures the electrical element within the frame 1. The bars 17 are preferably stamped from sheet metal.

The heating element comprises a disc-like plate 20of porcelain or other suitable highly refractory insulatin customary top sur ace groove 21, in the present instance, of spiral form, in which the electrical coil 22 is mounted. The insulating plate 20 is spaced from a bottom plate 23 by a heat insulating material 24, for instance asbestos, and a sheet metal band 25 encircles the peripheral edge of the plate 20 and has a lower inturned flange 26, which extends under the marginal edge of the plate 23 and supports the same. The upper edge of the band 25 is provided with bendable tongues 27, which engage over the edge of the insulating plate 20 and serve to hold the material, and has the band in position to retain the bottom plate bolt 29, which retains the parts in assembled relation. It is evident that the insulating plate 20,

heat insulating material 24 and 28, bottom plate 23 and band 25 form the heating unit which is mounted within the frame .1 and is removable as a whole therefrom. This unit is preferably slightly spaced from the inner marginal edge of the frame 1 to permit air circulation therebetween and 'rests at its bottom on the feet 4 and spider 5. The central bolt 18 asses down through the center of the heating unit and serves to retain it in the frame. A sleeve 30 encircles the bolt 18 in engagement at its upper and lower ends with the central portions of the respective spider 5 and frame plate 10 to brace the same when the bolt 18 is tightened. A socket 31 for an attachment plug is mounted at its inner end on an edge portion of the frame plate 10 between such plate and the frame member 1, and has its contact parts in suitable electrical connection with the respective portions of the coil 22, as is well understood in the art.

One feature of my invention consists in mounting the control switch for the heater on one of the legs 15 of the frame. For this purpose one of the legs is provided with an enlarged cylindrical socket portion 32 in which the switch means 33 is disposed, such means being provided with a control handle or switch button 34, turnable to different positions to secure different closed circuit heating conditions or to open the circuit. Nothing is claimed for the switch mechanism itself, and it is, therefore, not shown in detail. The leg 15 which carries the control switch, in the present instance, is cast, while the other legs are stamped from sheet metal.

For the purpose of efficiency and safety each frame leg 15 is provided with a foot piece 35 of electrical insulating material, which is secured within the channel of the leg by the associated bolt 36, which connects the outer end of the respective brace bar 17 to the leg.

37 designates a handle which is adapted to be detachably engaged with the lower outer edge of the frame bar 1, and with the marginal edge portion of the frame plate 10 to facilitate carrying the appliance when hot. For this purpose the inner end portion of the handle is broadened and provided with two laterally spaced portions 38, each having an upstanding tongue 39 at its upper end for engaging up back of the lower edge of the frame bar 1, and having at its lower end a notch 40 adapted to receive the adjacent edge portions of the plate 10, as shown in Fig. 2.

It is apparent that I have provided an exceedingly simple frame construction for appliances of the class described, the members of which frame are formed from sheet metal,

and are secured together in a manner to eliminate the use of bolts or other separate securing means. It is also evident that the frame and supporting legs thereof are of light but rigid and durable construction, and that the parts are so arranged as to facilitate the free circulation of air through the frame for cooling purposes. With my appliance it is possible to quickly remove the heating unit from the frame and to easily and quickly change the insulating plate 20- or heating element 22, should either become broken.

I wish it understood that my invention is not limited to any specific construction, arrangement or form of the parts as it is capable of numerous modifications and changes without departing from the spirit of the claims.

Having thus described my invention, what side of said member, a support for said legs,

means for detachably securing the legs to said support, and means extending thru said supportfor removably connecting a heating unit thereto.

2. In an appliance of the class described, a rim member, depending legs on said member, a spider forsupporting said legs, means for detachably securing said legs directly to said spider, and a single means extending thru said support for removably connecting a heating unit thereto.

3. In an appliance of the class described, a .rim member, depending legs on the inner side of said member, a support for said legs having apertures, tongues on said legs arranged to extend thru said apertures and be bent over thereby detachably to connect the rim member thereto, and a single means extending thru said support for removably connecting a heating unit thereto.

4. In an appliance of the class described, a frame comprising a ring member having supporting legs, and having shorter legs depending from its inner edge, a spider having its arms attached to said short legs and co-operating with the ring member to form a skeleton bottom socket, said spider having reinforcing edge flanges, and an electrical heating unit mounted in said frame socket and removable as a whole therefrom.

5. In anappliance of the class described, a spider, a ring member disposed above and mounted on the ends of the spider arms and co-operatlng with the spider to. form a skeleton bottom socket, said ring member and spider having bendable tongue engagement, one with t e other, and an electrical heating unit mounted in said socket and removable as a whole therefrom. is

6. In an appliance of the class described,

' ably mounted in said rim and curing tongues a spider, a ring member detachably connected to the arms of the spider and disposed.

thereabove', a bottom plate carried by the sp der in spaced relation below the same, sald spider, ring member and bottom plate forming a frame, and an electrical heating element removably mounted on the spider within the ring member.

In an appliance of the class described, a rim having a depending outer wall, a spider, means includin a slot and tongue connection for detachab y securing the inner side of said rim to the spider, a bottom plate below said spider and detachably secured thereto,-said spider, rim and bottom member cooperating to form a frame, and a heating unit removably connected to said spider. 8. In an appliance of the class described, a spider, a bottom plate in vertically spaced relation to said spider, supporting legs atthe ends of said spider having tongues arranged detachably to engage into apertures in said plate, a rim spaced above said spider having depending legs, means for detachably securing said depending legs and h spider, main supporting legs connected to one of said parts, and a heating unit removdetachably connected to said spider.

9. In an appliance of the class described, a bottom plate having openings therein, a spider disposed over the bottom plate in spaced relation thereto, and having supporting legs projecting downward from the ends of its arms and rovided with bendable seor projecting through the plate openings, the spider arms having openmgs therein, a ring member having legs depending therefrom and resting on the spider arms, and said legs having securing tongues projected through the spider arm openings,

- main supporting legs secured to one of said parts, andan electrical insulating member removably mounted within the ring member over the spider. V

10. In an appliance of the class described, a frame, an electrical heating unit carried by the frame, supporting legs for the frame, and an electrical control switch for the heating unit carried by one of said legs.

11. In an appliance of the class described, having a supporting leg with a socket therein, and an electrical control switch for the appliance mounted in the leg socket.

12. In an appliance of the class described, a frame comprising a bottom plate, a top ring member and an intermediate member secured together in spaced relation, the intermediate member and ring member cooperating to form a socket, an electrical heating unit mounted in the socket, a bolt extending .down through the heating unit, bottom plate and intermediate member to secure the same in assembled relation, and supporting legs attached to said frame.

13. In an appliance of the class described, a frame comprising a bottom plate, a top ring member and an intermediate member secured together in spaced relation, termediate member and ring member cooperating to form a socket, an electrical eatin unit mounted in the socket, a bolt extending down through the heating unit, bottom plate and intermediate member to secure the same in assembled relation, supporting legs attached to said frame, and bracing members connecting the lower ends of the legs to said bolt.

14. In an appliance of the class described, an electrical heating unit comprisin a refractory insulating plate, aheating e ement carried by the plate, a bottom plate, a heat insulating element between the refractory and bottom plates, and a split band encircling the peripheral portions of the two plates and heat insulating material, and having portions engaging over and under the respective plates to retain the same in assembled relation, and means for drawin the ends of the band together to clamp the hand to the engaged parts.

In testimony whereof I have hereunto signed my name to this s ecification.

HE Y A. ZIOLA.

Images