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Electric Signaling Device.
Patent for an electric signal device which has a shelf with a pad of paper, which when lowered signals a central location elsewhere. It is optimized for use by manufacturing companies watchmen and telegraph operators to send in reports of their location at various intervals.
Date:
August 13, 1907
Creator:
Baker, John A.
System:
The Portal to Texas History
Railway Signal Device
Patent for a railway signal device used to "remind a telegraph operator of orders received concerning a given train" (lines 11-12). Illustrations included.
Date:
August 13, 1907
Creator:
Baker, John A.
System:
The Portal to Texas History