Improvements in electric apparatus for therapeutic use.

  • Fisher, Frederick Courtenay
Date:
1903
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in electric apparatus for therapeutic use. Source: Wellcome Collection.

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    10 15 20 25 30 35 40 45 50 55 N° 13,937.—A.D. 1903. S Fisher’s Improvements in Electric Apparatus for Therapeutic use. position of the electrodes and coils, an adjustable clasp or buckle C being pro¬ vided upon the elastic belting to enable the belt to be accomodated to suit the size of person. A suitable snap is used to attach the primary wire P to cells and from thence bundle of wires or laminated stamped plates H wrapped with insulation and from thence to further sets of bundles of wires or stamped plates H, in cases where more than one is used being then connected to the other pole of the battery. The wires between the winding are made up with flexible wire to prevent break¬ ing or binding. The secondary wire 8 after winding over the primary wire has one end carried aver to a stud on the resistance switch I, while the other end is wound on the next winding of primary and so on, to as many primaries as are used ending finally at an electrode. The electrodes Iv are connected to each other by means of the secondary wire and are placed on the opposite side of the belt to the winding F and poles H. The belt may be made up as illustrated by Figure 2 in which the connections are so arranged as to provide a secondary or faradic current or they may be made up without a secondary wire as illustrated by Figure 3 or they be made up without contact breaker and electrodes, in which case they consist merely of a primary or laminated wire or plates, but such arrangement is mounted upon a silk belting in two parts the one A2 of which slides upon the elastic belting 11 for the purpose of adjustment as before described. Pads' M may be made up as illustrated by Figures 4, 5 and 6 in the same way as described for the belt with the only difference that the shape is more of a rectangle and carries two loose electrodes Jc1 and Jc2, the secondary wires S being in such case free and of suitable length to apply to any part of the body, such for instance as a metallic sock for the foot and without necessarily attach¬ ing the pad to the body. The electrodes such as F Jc2 may be applied either by holding or strapping to the person while metallic cloth may be used as electrodes. For making and breaking the circuit of electricity the contact breaker may be made up (as illustrated by Figures 7 and 8) of a fork magnet P of laminated iron, or bundles of iron wire insulated, wTound with one or more turns of wire. An iron armature S nivoted on a nlate W at s1 attached to the laminated iron, under which a fine spring Z is attached to keep the armature from the poles when no attraction is in the poles of the magnet. A plate V which is insulated from the magnet and plate carrying the pivoted armature, extends over the armature which is provided with a platinized face so as to enable the latter to be set or adjusted for sparking by swinging on its pivot s1 the armature being slightly tapered from one side to the other, a platinized set screw being pro¬ vided for allowing of the more perfect regulation of the breaker. Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed I declare that what I claim is :—- 1st. The improvements in electric belts for therapeutic use characterized by a belt in two or more parts which are connected together by elastic belting one or more of which parts are mounted to slide upon the elastic belting for the purpose of adjustment of the electrodes which are secured to the sliding parts in combination with a battery and primary and secondary wires forming coils with poles of wires or laminated plates and with an intermediate contact breaker substantially as and for the purposes set forth. 2nd. The improvements in electric belts for therapeutic use characterized by a belt in two or more parts which are connected together by elastic belting one or more of which parts are mounted to slide upon the elastic belting for the purpose of adjustment of the coils which are secured to the sliding parts and