Improvements in electro-therapeutic apparatus.

  • McElhinney, Mark Gamble
Date:
1910
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in electro-therapeutic apparatus. Source: Wellcome Collection.

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    & 10 15 20 25 30 35 40 45 v N°1883 ? ! t part A. D. 1910 Date of Application, 25th Jan., 1910—Accepted, 28th Apr., 1910 COMPLETE SPECIFICATION. Improvements in Electro-therapeutic Apparatus. I, Mark Gamble McElhixney, of Number 109, Metcalfe Street, in the City of Ottawa, in the Province of Ontario, in the Dominion of Canada, Doctor of Dentistry, 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: - The invention relates to improvements in electro-therapeutic, apparatus, as described in the present specification and illustrated in the accompanying drawings that form part of the same. The invention consists essentially of the novel arrangement and construction of' parts, whereby a condenser element receiving static charges of electricity from a suitable high-tension circuit is periodically neutralised by a vibratory conductor, and the static electricity discharged therefrom for electro-therapeutic purposes. The object of the invention is to devise an inexpensive apparatus both simple in construction and operation, whereby an exaggerated vibratory static current of electricity may be secured for therapeutic purposes. In the drawings, Figure 1 is a plan view of the device partially broken away to show the interior thereof. Figure 2 is a cross sectional view on the line A—-B in Figure 1. Like numerals of reference indicate corresponding parts in each figure. Referring to the drawings, 1 is a disc of hard rubber or other suitable non¬ conducting material, having the circular flanges 2 and 3 extending laterally from one side thereof, and forming the central recess 4 and the outer ring recess 5. G is a metal plate secured on the outer side of the disc 1, and preferably vulcanised in the rubber, whereby said disc presents a perfectly smooth outer surface, the said plate G receiving the static charges, as hereinafter explained. T and 8 are binding-posts arranged in the flange 2, or other convenient place. 9 is a coil of fine wire filling the outer recess 5, and having one terminal thereof electrically connected to the binding-post 7, and the other terminal electrically connected to the plate 10 secured on the inside face of the disc 1 opposite the plate 6, said plate 10 preferably being formed of tin-foil, and having a sheet of mica 11 placed thereunder to more effectually insulate the same from the plate G. 12 is a ball, preferably made up of tin-foil, and secured at the outer or spring end of a fine wire 13, said wire being open coiled to render the same as flexible as possible. The wire is supported from the flange 2, and electrically connected to the binding-post 8, and is securely held by the flange 2, so that the ball 12 is quite close to the plate 10. 14 is a cover fitted on the flanges 2, and enclosing the coil 9 and wire 13 w ith the ball 12 vsecured thereto within the recesses 5 and 4 respectively, so that the operative parts of the invention can in no way become misplaced, suitable orifices being left in the cover, so that the binding-posts 7 and 8 extend there- above, and to which are attached the terminals of a suitable high-tension circuit. [Price 8c/.]