Improvements in electro thermal garments for therapeutic purposes.

  • Charles, Burton Robert
Date:
[1909]
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in electro thermal garments for therapeutic purposes. Source: Wellcome Collection.

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    5 10 % 15 20 25 30 35 40 45 N 20,408 A.D. 1909 Date of Application, dth Sept,, 1909—Accepted, 1st Sept., 1910 COMPLETE vSPECIFICATION. Improvements in Electro Thermal Garments for Therapeutic Purposes, I, Button Robert Charles, of Portland, State of Oregon, United States of America, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement: — My invention relates to electro thermal garments of that class which are designed to be used for confining the heat generated by an electric current to the body for therapeutic purposes and comprising a series of surfaces to which are secured electric heating wires or resistances which may consist of com- positely wound strands provided wuth waterproof and fireproof insulating coat¬ ings. One of the objects of my invention is to provide a novel form of insu¬ lation for such wires in which the primary coating of insulation on the fine strands constituting the core of the wire is wound spaced apart and impregnated with a solution consisting of approximately equal parts of soluble silicate and glycerine. The invention further comprises the attachment of the electric heating wires by zig-zag stitching to a separate attachable strip of woven gauze-like material such as cambric, since such material accommodates the displacement of the wires during the creasing or folding of the garment, without- imposing any strain on the stitching threads, for the threads of the cambric accommodate the slight displacement of the stitching threads, under the circumstances referred to. In the drawings. Figure 1 rej^resents a garment provided in parts with mats of wire, and pro¬ vided with terminals adapted to be connected with a socket installed in an elec¬ tric house circuit; Figure 2 is an enlarged detail of a portion of the cambric or gauze-like material, to which the electric heating wires are sewn. Figure 3 is a diagrammatic detail, illustrating the steps in the process of making the electric heating wires used by me in the construction of heating mats. Figures 4 and 5 are enlarged details of portions of the garment provided with pockets, in which the terminals of the electric wiring of the garment are con¬ cealed ; and Figure 6 is a detail of the slipper attachment with which the garment is provided. The wire, a, is arranged in the form of continuous parallel strands and sewn to the front face of a base strip of cambric, b, or other gauze-like material by zig-zag stitching, c, and the base h, is sewn to the inner face of the material from which the garment is made. The mats of wire, arranged as illustrated in Figure 2, are electrically con¬ nected in series with each other, and, finally, with the terminals arranged in the form of a cord, d, provided with a plug, e, adapted to have a cord /, attached thereto, which cord /, is provided with a plug g adapted to be inserted in the socket h, of an incandescent electric lamp, i is a switch arranged to enable one to turn the electric current, transmitted through the garment, on or off at will. [Price 8t?.]