Resource Type
Counties
3 Matching Results
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Post Hole Digger
Patent for a post hole digger with an illustration.
Date:
November 13, 1906
Creator:
Wall, William J.
System:
The Portal to Texas History
Nut-Lock.
Patent for a nut lock with a locking washer at the base of the nut that does not unscrew. The nut forms a bar of spring metal.
Date:
March 13, 1894
Creator:
Mauermann, Albert J.
System:
The Portal to Texas History
Skate-Wheel.
Patent for a skate-wheel that is meant for roller skates, but it can be used for other things. It gives the skate a smooth gliding movement. The "invention consists essentially of a stationary runner or slide rigid to the skate and arranged in a circular rim or tire, so that there will be as little friction as possible between the two parts, the runner being adapted when in operation, to slide along its bearing in the rim or tire and by this means the tire is made to turn as in the ordinary wheel" (lines 24-32).
Date:
March 13, 1894
Creator:
Mauermann, Albert J.
System:
The Portal to Texas History