US1060264A

US1060264A - Heating element.

Info

Publication number: US1060264A
Application number: US69027812A
Authority: US
Inventors: Joseph F Lamb
Original assignee: Landers Frary and Clark
Current assignee: Landers Frary and Clark
Priority date: 1912-04-12
Filing date: 1912-04-12
Publication date: 1913-04-29
Anticipated expiration: 1930-04-29

Description

J. P. LAMB. HEATING ELEMENT.

APPLICATION FILED APR.12 191&

1,060,256. Patented Apr.29,1913.

INVENTOR Joseph ZT'Lamb:

To ciZ'Z d om it may concern fing -Elements of which the following mor srnirns .r rrssr orrron JOSEPH F. LAMB, 0F BRITAIN, CONNECTICUT, ASSIGNGR TO LANDERS, FRARY & CLARK, 1101" NEW BJRJ'I'AI'N, CONNECTICUT, A CORPORATION OF CONNECTICUT.

HEATING ELEMENT.

lessees.

- known that l, Josnrn F. 'LAMB, a

citi'zenf 'ofthe United States, and a resident of New Britaimin the county of Hartford end' 'state of Connecticut, have invented certain new and useful Improvements ln-liestspec'ifi'czttion. y

-The ob ect of thls in-ventlon ls-to provide a heating unit for use in utensils of var ous 7 kinds.

It is the purpose of this-invention to prevent loss of heat by preventing the trans mission of heat to the exposed parts of elther of the rndlating members. 'lhxs l accomplish by the use of s valve plate intel, used between the resistance material or unit and that radiating member part 01" whose surface is exposed, that is to say, is not in direct' heat conductive relation to. the perts'of. the utensil which it is desired to heat, and by means of which the transmis- 851011 of heat thereto can be controlled or wholly prevented; but I do provide the said vslveplate with surfaces which can be brought into heat conductive f relation with other parts of said radiating member or utensil'and from which heat is transmitted torthe utensil. Thus I are enabled to control the heating of this radiating member toposed, owing to somepeculia-r construction or special use, they could both be treated.

along the general lines of my invention as indicated above. t a

In the drawings-lligure l. is a central vertical section of a heating unit made in accordance with my invention. Fig. 2 is a top view the radiating member. Fig. 3

, is ato' view of the assembled unit.- Fi I I"! is a side elevntion, partly in section showing the unit installed for use.

1 Referring to the drawings, illustrating one embodiment of the invention, 0, denotes one radiating member which as shown has an upturned flange? within which the resistance 0, here shown, as in the form of a,

coil, and the radiating member 03 are located and assembled with the proper insulation. In the case illustrated, the upper radiating member is in heat-conductive re letion with the wall of the ut 'n the flange Z) of'z'the lower radi Specification'of Letters Patent.

ever, is exposed, that isto say, it does notdirectly contactwith the wallet the utensil and cannot well be arranged to. Consequently, the valve plate 0 is interposed between the resistance 0 and the bottom of the lower member aundspnced therefrom by the projections f, or if desired, by blocks of insulatingmaterial, in order-to diminish the amount olL-or totally prevent, the passage of heat thereto. I

At the edges of the valve platare'fianges g which fit closely within, and have intimete surfn'cecontact with, t heliange F) on the. lower radiating member a which in turn contacts with the wall of the utensil. These flanges are preferred since they give greater surface contact but either or both may be dispensed with if" desired. .It will further be noted that as illustrated, the

ating .l-nembcr becomes a dead air space and so acts as an eilective heat insulator. The heat in the upper radiating member is transmitted directly, to the wall. of the utensil, and the heat in the valve plate passes not to the botton'r'or exposed portion of the lower radiating member but to the flange thereof which is in contact with the wall of theutcnsil, thus mskin f it possible to utilize the full heating, eii'ect of the unit to heat the utensil, or its contents, as the case may be, and avoiding to the greatest possible degree loss of heat due to radiation from exposed surfaces of the radiating members. Obviously, my invention is. not concerned with the shape of the unit, or its several parts, or to the method of installation in a utensil, nor is it concerned with the character of the radiating members, that is to say whether they be formed separately from, or as parts of the utensil.

I claim as my invention:

1. In a device of the character described Patented Apr. 29,1913. .hpplication filed April 12, 1912. Serial No. 690,278.

a resistance unit having a part adapted to I saidmember, said member and valve plate being also arranged in heating relation with the utensil.

2. In an article of the character described, the combination with a resistance material, of heat-radiating members located at opposite sides thereof, and a valve-plate located between said resistance material and one of said heat-radiating members and arranged in heat-conductive relation with active parts of said radiating member and spaced from the inactive parts thereof.

3. in a device of thecharacter described, the combination with heatradiating members and an interposed resistance, of an up standing flange formed at the edge of one of the radiating members, a valve plate located between said member and the resistance, and a flange on the valve plate arranged in heat conductive relation to the flange on the radiating member.

4-. In an article of the character described, a resistance material, a radiating plate on each side thereof, one of which is provided with an edge flange, a valve plate located between the resistance and said flanged radiating member and spaced from the latter, and a flange on the valve plate arranged in heat-conductive relation with the flange 0n the radiating member.

5. The combination with an electrical heating element comprising radiating member", and an interposed resistance material. of a valve plate located between one side of said resistance and the adjacent radiating member and spaced from the latter.

6. In an electrical heating unit, the com- 'bination with a resistance, radiating plates on opposite sides thereof, spaced from one another at all points, and insulation interposed between said resistance and radiating plates, .of a valve plate located between one of said radiating plates and the insulation on the adjacent side of said resistance, and separated supports located between said valve plate and adjacent radiating plate.

7 In an electrical heating unit the combination with a resistance and radiating plates located on opposite sides thereof and spaced from one another at all points, of a valve plate located between one of said radiating plates and the adjacent side of said l'esistancmtlie mass of said valve plate being less than the mass of the other radiating plate.

8. In an electrical heating unit a ra'diating plate provided with an upstanding circumferential flange at its edge, a second radiating; plate located in juxtaposition to the first but spaced therefrom at all points and an interposed resistance, said resistance and second radiating plate being, located within said upstanding flange.

9. The combination with an electrical heating unit comprising heat radiating members and an interposed resistance material, of a valve plate located against one side of said resistance material in heating relation therewith and spaced from the adja centradiating member.

JOSEPH F. LAMB. Witnesses:

I. M. BUsH, HAROLD GRACE.