Electric Horn.
Recently introduced by the Gralge Patents and Engineering Syndicate (London.) The electric horn is operated from a small
battery circuit, and works on the principle of a make and break electro magnet vibrating a springy and resilient diaphragm, the diaphragm itself acting as the current interrupter, in the usual method through platinum points. This is a distinct novelty, protected by patents, and is meeting with considerable demand.
Permanent link to this item
https://paperspast.natlib.govt.nz/periodicals/P19070601.2.13.11
Bibliographic details
Progress, Volume II, Issue 8, 1 June 1907, Page 289
Word Count
69Electric Horn. Progress, Volume II, Issue 8, 1 June 1907, Page 289
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