Published Resources Details Journal Article

Author
McEvoy, C. A.
Title
Abstract of Patent: Torpedoes or Submarine Mines
In
Engineering
Imprint
vol. 39, 2 January 1885, p. 23
Description

Accession No.2374

Abstract

Abstract of Patent No. 2350, granted to C. A. McEvoy, of London, accepted November 25, 1884, for: 'The circuit from a signalling and testing battery is carried through the coils of a series of electro-magnets of the signalling apparatus, and through insulated conductors from the torpedoes. When the torpedo is struck a resistance is short-circuited, and the current passes freely through the circuit of that torpedo, and its electro-magnet attracts its armature releasing a catch, and allowing a shutter to drop, exposing a signal and entering between two spring plates, and thereby completing a circuit from the firing battery and also from a local battery in a bell circuit. A galvanometer can be put in and out of the first-named circuit at pleasure.'

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