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Automatic Weighing-Scale. (open access)

Automatic Weighing-Scale.

Patent for an automatic weighing-scale meant to be connected to a pneumatic conveyer to weigh cotton, grain, or other products. The invention weighs "any amount to which its scale may be set, and then cutting off the supply and emptying itself, when it may be reset, preferably by hand, to repeat the weighing operation" (lines 18-22).
Date: July 9, 1895
Creator: Schulze, Andrew
System: The Portal to Texas History
Locking Device for Car-Doors. (open access)

Locking Device for Car-Doors.

Patent for a locking device for a sliding train car capable of locking automatically upon close, including illustrations.
Date: May 9, 1916
Creator: Tierney, Henry J.
System: The Portal to Texas History