US1174548A - Electrical element. - Google Patents

Description

ELECTRICAL ELEMENT. APPLICATION FILED MAR. 25, 1914.

Patented Mar. 7, 1916.

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d FRANK J. COOK, DI CLEVELAND, OHIO, ASvS-IG'NOB., BY .M'ESNE ASSIGNMENTS, 0F ONE- HALF TO .TAKES E. DOYLE AND ONE-HALF TO CHARLES S. BRITTON, BOTH OF CLEVELAND, OHIO.

ArLncfinrcfn.. ELEMENT.

Specication of Letters Patent.

Patented Mar. 7, 1916.

To all rwhom it may concern:

. Be it known that I, FRANK J. COOK, aciti-v` zen of the United States, residing at Cleveland, in the county of Cuyahoga and State The object is the provisiony of an element which not only conserves, and hence intensifies the radiation of heat from itself, vbut which is especially adapted to concentrate the radiation 0f its heat in agiven direction.

An incidental object is the attainment of a construction which will be suiiiciently simple and economical of manufacture.-

The inventive conception is embodiedin I means which are hereinafter explained and variously combined in the claims, while the annexed drawing and particular description thereof together Set forth in detail two certain means constituting my invention, the

Vdisclosed means, however, being but some of various mechanical forms in which the principle of my invention may be applied.

Referring next to the drawing: Figure I represents a plan of one form of my invention. Fig. II is an enlarged section of Fig. I. Fig. III is a perspective view of a. modified form of my invention. Fig. IV is any enlarged section of the same.

With reference first to iFigs. I and II' which illustrate the type of mv invention which I regard as suitable for heating the inking-disk of a Gordon type of printing press, it will be noted that the construction involves. a circular shaped compartment 1, preferably of metal, and of U-shaped cross section, and a second compartment 2 of identical shape though vervslightly larger, such that it may bev adapted to effect a telescopic connection with they compartment 1 as clearly seen in Fig. II. Disposed upon the bottom of the inner compartment is an asbestos lining 3, and similarly disposed against the opposed inner sides of the compartment 1 are a pair of asbestos linings and 5 respectively. Resting upon the lining 8 and located equal distances from the linings 4 and 5 respectively lare a pair of spacer rings 6 and 7 which are likewise preferably of asbestos composition.

Extending between and restln against portions of the upper surfaces o the spacer rings 6 and 7 is an annular member 8 also preferably of asbestos composition though any other insulating medium would also be acceptable. Abutting the outer edge surfaces of the member 8 and furthermore abutting the complementary portions of the rings 6 and 7 respectively are a pair of upright insulating rings 9 and 10 respecti\ ely; these eX- tend upwardly to within* a short distance of the inner surface of the receptacle 2.

As so` positioned, the insulating member 8 should be snugly interposed between the rlngs 9 and 10 so as to effect an airtight connection therewith. The arrangement is furthermore such that two lateral annularv air spaces 11 and 12 respectively and one interjacent air space 13, are provided. It is obvious too that the member 8 and rings 9 and 10 together form an annular compartment of rectangular cross section and of correspondingly smaller dimensions.' Located in this last mentioned inner compartment is any appproved type of resistance coil 14, which coil is operatively connected with terminals each designated by the letter T, as shown in Fig. I. The coil 14 is held in place by being enveloped in the usual manner by any approved packing composition 15, which may consist of 'equal parts of fire clay, Portland cement and litharge,

to have the property of allowing for the expansion of the heated coil. A heat conducting cover 16, composed of mica, is interposed between the upper surfaces of the rings 9 and 10 and the innersurface of the receptacle 2, whereby the inner compartment to which attention has just been directed, is closed and the packing 15 securely held in place.

By the provision not only of two insulating walls but of air spaces therebetween which'of themselves constitute insulation, I attain the decided advantage of concentratingthe radiation of heat in a specific direction, and in fact in this instance in the direction of the mica 16. It is apparent that the radiation of heat' in any one of the other three directions, is made practically impossible.

The modification to which Figs. III and IV have reference, is especially adapted for cylinder printing presses, and resides in having the shape of the element straight instead of circular, and in the utilization of a resistance coil extending the full length in one direction and returning. Brackets B are represented to indicate the adopted mode of attachment.

M v invention being described with'suficient thoroughness, what I desire to secure by Letters Patent and therefore claim specifically, is:

1. An electrical element comprising a. pair of receptacles adapted to have telescopic connection with each other, aninsulating lining for the inner of said receptacles, an insulating construction establishing air spaces in conjunction with said lining, a heat conducting member forming together with such construction -a closed inner compartment, and an electrical resistance medium disposed in said compartment, the latter being spaced from the inner of said receptacles and adjacent the outer of said receptacles for the purposespecified.

2. An electrical element comprising a pair of members of U-shaped cross section adapted to have telescopic connection With each other, a lining completely covering the interior surface of the inner'of said members. an insulating U-shaped structure of smaller dimension Within the inner of said members, means for supporting such structure with its closed interjacent surface spaced from said inner member and its open `side adjacent a portion of the outer of said members, and an electrical resistance medium placed Within said structure so as to be nearer such portion of said outer member than said closed interjacent surfacel of said inner member.

3. An electrical element comprising a pair' FRANK J. cooK.

Attested bye- RAY NELKE, MARY COLEMAN.

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