Electric Switch.
Description:
Patent for an electric switch meant for the Edison three-wire system. It provides "means whereby the translating devices on either side of the middle wire may be supplied with electricity to the exclusion of those on the opposite side, the return-current from said translating devices being transmitted by way of the middle wire" (lines 11-16).
Date:
November 12, 1895
Creator:
Mottram, William T. M.
Item Type:
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Partner:
UNT Libraries Government Documents Department