993.1138.1: Electrotherapeutical Apparatus, 1923-1940

Additional Images

993.1138.1: Electrotherapeutical Apparatus.
Image No. 2139 ; Photographer: Helen Kingsley

Object Description

'MEDACO' violet ray high frequency generator in a brown leatherette covered steel hinged wooden case with leather handle, corner protectors and catch, lined with burgundy coloured textile. The electrical mechanism (coil, condenser, etc.) is covered by a Bakelite control panel with 2 sleeved electrical leads ending in a plug and an electrode handle. The control panel displays a small plate giving volts and amps, and manufacturer's details, a dial for regulating strength of current 'DOSAGE CONTROLLER', a contact adjustment dial and an on off switch. There are 4 high frequency violet ray surface electrodes [sealed glass tubes]: rake comb, glass saturator electrode and 2 general surface electrodes which are housed in the lid. Serial No. 306. MEDACOâ„¢ generator patent dates: Dec 1917, Feb 1923.

Object Classification

Accession Number: 993.1138.1
Collection: Therapeutics
Date: 1923-1940

Object Dimensions

  • Length: 35.5 cm
  • Height: 12 cm
  • Width: 28 cm

Object Parts

  • a) Hinged lined case with catch and leather handle, electrical mechanism, control panel, electrode handle and plug
  • b) Rake comb electrode
  • c) General surface electrode
  • d) General surface electrode
  • e) Glass saturator electrode

Object Materials

  • Bakelite,
  • copper alloy,
  • glass,
  • leather,
  • leatherette,
  • metal,
  • plating,
  • rubber,
  • steel,
  • textile,
  • wood

Acquisition Detail

  • Manufacturer: Electro-Medical Appliances
  • Patent Date: 1917-12-01
  • Owner: Mr Zehr
  • History of Use: Belonged to Mr.Zehr, a Chiropractor in Kitchener, Ontario. This set was used to apply high frequency electrical sparks to the body using the glass vacuum electrodes. It was believed to relieve aches and pains in the muscles, internal organs and the nerves [rheumatism] by massaging the surface of the skin with the electrode and it was also used for treating various skin conditions. The glass comb shaped electrode was used to stimulate hair growth on the scalp as a cure for baldness. This was a highly popular home treatment in the first half of the 20th century.