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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    Improvements in Electro Thermal Gamients for Therapeutic Purposes. The wires of the terminals d and of the switch i extend to the outside of the garment, through the material of the latter, at places where the garment is provided with pockets j Jc, which pockets are so arranged as to hold and con¬ ceal said terminal wires, so that the garment can be used for ordinary house purposes, when not required for therapeutic purposes. The wire, a, is composite or stranded, being made of a plurality of fine strands, I, arranged parallelly, as shown in Figure 3, and insulated by a cover¬ ing consisting of a plurality of cotton thread layers wound one over the other. The primary coat is impregnated (preferably the thread thereof before winding around the composite wire) by immersing in a solution of heat-resisting 10 chemicals, consisting of soluble silicate and glycerine in about equal parts. This treatment is for the purpose of rendering the primary insulation coat unaffected by the heating of the wire strands which it encloses. The primary insulating coat m is not spun close, but the strands thereof barely touch each other, and leave intermediate minute spaces. The glycerine in the solution adds adhesiveness to the primary thread and also serves to space the contiguous loops of strands from each other. The second and third coats, n, o, are spun dry over the primary coat, succes¬ sively, after such primary coat has been allowed to dry. The minute spaces between the successive loops of threads, caused by the drying of the solution 20 impregnating the thread of the primary insulation, will serve to increase the flexibility of the latter, for it allows such contiguous loops to move closer together during the bending of the wire. The primary coat, m, thus alone comes into ■ direct contact with the wire strands, I, and saves the second and third insula¬ tion coats from being scorched by the heating of the wire strands; and, on the ^5 - other hand, the second and third coats protect the first coat from wear and • serve as a final insulation. After the mats, &, of the wires have been sewn to the inner face of the gar- inent, as described, they are covered by the lining of the garment. The gauze¬ like cambric conserves the heat, as it were, that is, holds it on the interior of the garment and to the body of the wearer, and protects the material, out of which the garment is made, against any excessive heat, which is quite a factor, for it is known that fabrics becomes partially decomposed by direct exposure to excessive heat. It will be found that the outer face of the material of the garment will remain quite cool to the touch during the time that the heating current is turned on. ° The arrangement of the mats of electric wires, as above described, causes the garment, when worn and enveloped about the body to become a form of magnetic helix, or solenoid, from which beneficial therapeutic effects may be obtained, II the electric current has the proper strength. 40 AUhe bottom of the garment I may provide a slipper-like foot-warming attach- ^Tment ^ beated by wires electrically connected with the wiring of the My foot-piece attachment consists of a sole, j,, to which are secured slipper- e uppers, q, me uding side strips r, the whole having the general appear- 45 ance of slippers The attachment of the base strip or sole^^, to the bottom of ofnf aihuto rr Pf -ably bj. sewing, so as to provide a sort of hinge- io. ^ to permit the foot-piece, when not to be used, to be turned up dS Hke®a‘togarment, and there secured by a sole Tud tL g^°^«-fastener, the two parts of which are secured, at <, on the 50 sole and the garment, respectively, as shown. the rePe I*'® f^ot-piece is to be used, the same will be dropped down, and after o5 haflain“dowr tb^rf around the person and the patiLt has bUn seated! or nas lam down, the feet will be inserted in the foot-piece, in the same mannpr warm*th!”feet an 1 tt* adjusted, the foot-piece will 55 effects of the garment a! f^Xle. “ therapeutical -
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