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Adding-Machine
Patent for improvements to adding machines, which is key-operated and includes a vertically disposed shaft and a means to actuate the sliding plate.
Date:
January 5, 1915
Creator:
Gatewood, William F.
System:
The Portal to Texas History
Case for Motion-Picture Films
Patent for a case for motion picture films that protects the film from damage when rewinding or transferring from one reel to another. The case also ensures that the film will be wound uniformly.
Date:
October 5, 1915
Creator:
McNeel, William Pinkney
System:
The Portal to Texas History