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Pump-Operated Device
Patent for "combination with a pump-operating crank-shaft and a walking-beam operatively connected with the pump-rod, means for preventing sudden movements of the pump-rod at the ends of its strokes and for assisting in starting the rod in its reciprocations" (lines 10-15).
Date:
May 28, 1901
Creator:
Crawford, Charles Buchanan
System:
The Portal to Texas History
Wrench.
Patent for new design for a wrench that is a "simple, efficient, and inexpensive one adapted for operating on nuts, pipes, rods and other objects." (Lines 11-13) Illustration included.
Date:
May 8, 1900
Creator:
Willmann, Joseph
System:
The Portal to Texas History