Apparatus for Protecting Electrical Circuits.
Description:
Patent for an apparatus for protecting electrical circuits, and is an improvement on a previous patent (No. 537,932) issued to the inventor. This patent consists of "an electrical circuit, an alarm or indicator, a continuously-operating signal-transmitter at the protected structure operating to affect or influence the alarm or indicator, and a second or duplicate continuously-operating signal-transmitter located at the watchman's station, operating in unison with the first-named signal-transmit…
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Date:
January 7, 1896
Creator:
Oram, John M.
Item Type:
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Partner:
UNT Libraries Government Documents Department