Improvements relating to elecro-therapeutic apparatus / [Albert Williamson Courtney].

  • Courtney, Albert Williamson.
Date:
1901
Catalogue details

Licence: Public Domain Mark

Credit: Improvements relating to elecro-therapeutic apparatus / [Albert Williamson Courtney]. Source: Wellcome Collection.

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    N°5832 A.D.1901 Date of Application, 13th Mar., 1901— Accepted, 11th May, 1901 COMPLETE SPECIFICATION. “ Improvements relating* to Electro-therapeutic Apparatus. -’ I, Albert Williamson Courtney, of 147 Niagara Street, Buffalo, New York, Manufacturer of Medical and Electrical Specialities, do hereby declare the nature of this invention and in what manner the same is to be performed, to be par¬ ticularly described and ascertained in and by the following statement: — 5 This invention relates to the class of electric apparatus employed principally in the treatment of nervous diseases, and more especially to apparatus of this kind comprising a pair of hollow handles, one of which contains a small battery and the other an induction coil, flexible conductors connecting the primary coil with the battery, and a pair of body contacts or electrodes carried by the respec- 10 tive handles and forming the terminals of the secondary coil. Heretofore, the vibrator or circuit interrupter of the apparatus lias been operated directly by the induction coil, but this construction is unsatisfactory because the action of the vibrator is comparatively weak and unreliable. The object of my invention is to provide the apparatus with simple means for 15 ensuring a powerful and reliable action of the vibrator at all times. Referring to the accompanying drawings: — Figure 1 is a sectional elevation of my improved apparatus. Figure 2 is a diagram of the same showing* a different position of the auto¬ matic switch or vibrator. 20 Figure 3 is a cross section on line 3—3, Figure 1. Like letters of reference refer to like parts in the several figures. A is an electric generator consisting preferably of a small battery of any suitable construction which is arranged in one of the hollow handles or shells B B1 of the apparatus. These handles may be constructed of any suitable non-con- 2,r> ducting material, such as hard rubber, or of metal covered with insulating material, and each of the same is provided on one side with a removable lid h. c c1 are the poles of the battery which bear respectively against a contact spring e2 and a contact plate c3 arranged in the front and rear portions of the handle B. The contact plate c3 bears against a binding post c4, while the spring c2 30 is connected by a wire c5 with a binding post c6, these posts being both arranged at the inner end of said handle. D is the induction coil which is arranged in the rear portion of the other handle B1 of the apparatus. One end of the primary coil is connected with a binding post cl arranged at the inner end of said handle and connected with the 35 binding post cA by a flexible conductor cl1. The other end of the primary coil is connected with a contact screw cl2 which passes through the side of the handle on the front side of the induction coil. One end of the secondary coil is con¬ nected with a binding post e, while its other end is connected by a wire eL, with a metallic plate or body contact e2 arranged at the front end of the handle BL 40 and having a facing e3 of sponge or other absorbent material adapted to be mois¬ tened before using the apparatus. The binding post e is connected by a flexible wire or conductor f with a binding post f1 arranged on the other handle B, and this binding post is in turn connected by a wire /2 with a body contact f3 arranged at the front end of the handle B. These body contacts form the terminals of the 4 5 secondary coil and are adapted to be placed against the parts of the body through which the electric current is to be passed. [Price Sd.j