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Wrench
Patent for an improved model of wrench, designed to work upon the bore of tubes, thimbles, and other forms of pipes. This invention improves on the construction of the wrench, allowing it to be inserted in the end of a tube, and when rotated, be effectively engaged with the tube to turn the same.
Date:
March 6, 1917
Creator:
Brown, Charley S.
System:
The Portal to Texas History
Foot Piece for Cultivators.
Patent for foot pieces of "simple and improved construction whereby the cultivator blade will be held in ground engaging position resiliently with sufficient force to maintain it properly in position in varying conditions of the soil" (lines 10-15). The foot pieces allow for variation in the force with which the blade is maintained in ground, the blade being "quickly and conveniently changed" (lines 24-25).
Date:
March 13, 1917
Creator:
Myers, Jim H.
System:
The Portal to Texas History