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John Duncklee Gould
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Publication of GB190109987ApublicationCriticalpatent/GB190109987A/en
9987. Gould, J. D. May 14. Cables.-Relates to single or multiple cables in which a firealarm circuit is embodied. The fire-alarm circuit consists of an easily-fusible conductor 3, separated by insulation 4 from a second wire 5, which is surrounded by insulation 6. The alarm circuit is either spiral or straight, and is always situated on the outside of the cable.
GB190109987D1901-05-141901-05-14Improvements in Electric Cables
ExpiredGB190109987A
(en)