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Copy-Holding Pointograph.
Patent for a mechanism used in typewriters that holds documents to be copied indicates the line to be copied and shifts the document automatically. In addition, the patent includes instructions and illustrations.
Date:
February 29, 1916
Creator:
Mathews, Louis T.
System:
The Portal to Texas History
Electric Switch for Automatic Passenger-Fare-Registering Mechanism.
Patent for "improvements to electric switches for automatic passenger fare registering mechanisms" (lines 10-12). Illustration and instruction included.
Date:
February 29, 1916
Creator:
Savage, Harry & Baker, Willard L.
System:
The Portal to Texas History