Improvements in electro-magnetic apparatus adapted to the generation of electric currents for exercising and other hygienic purposes.

  • Allison, John Herbert
Date:
1884
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in electro-magnetic apparatus adapted to the generation of electric currents for exercising and other hygienic purposes. Source: Wellcome Collection.

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    Specification. Allison’s Improvements in Electro-magnetic Apparatus, &c. the coil within its casing by means of an outwardly projecting device; an insulated arm pivoted to swing transversely over the vibrating armature of the rheotome to and from its outer free end so as to adjust its vibrations; a suitable switch adapted to make or break the connections between the rheophore and battery, to open and close the electric circuit; and a fixed metallic band encircling each end of the dumb- 5 bell and adapted to form a seat for the cap covering and completing the end of the device, said band being notched to form a bayonet joint locked by one or more pins on the cap and adapted by means of suitable conducting wires or plates connected to the band and to said pin, to produce an electrical connection between a binding-screw or contact-point on the cap, and the battery and induction coil 10 enclosed in the body of the dumb-bell. In the use of this electrical apparatus, the electrode dumb-bell is connected with the rheophore dumb-bell by means of a suitable conducting cord secured to a binding-screw on the former and to either of the binding-screws on the latter, according to the nature of the current desired. The connecting rod is of such 15 length as to permit a free use of the dumb-bells and at the same time a free electric current is made to pass through the arms and body of the person exercising there¬ with, which may be graduated in its intensity by an adjustment of the movable damper cylinder covering the coil, and in its quality by an adjustment of the arm swinging transversely over the armature of the rheotomej and which may be 20 changed from a primary to a secondary current or be made to include them both, by changing the point of connection of the conducting wire with the rheophore dumb-bell. * r Apart from its adaptation as an exercising device, the rheophore dumb-bell may be used as an efficient, portable electro-magnetic machine, in connection with two 25 sepaiate electiod.es to be connected therewith by separate conducting wires for all purposes for which the ordinary forms of electro-magnetic machines are employed. Ihe electrode dumb-bell is recessed interiorly to adapt it as a convenient receptacle wherein to pack the connecting wires; extra electrodes ; vial of battery chemicals, etc., used in connection with the apparatus, this internal chamber or SO receptacle being closed by a suitable detachable cap or plug at the end of the dumb-bell. r ° Bated this 28th day of April 1884. HERBERT J. ALLISON