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4 Matching Results
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Pneumatic Knee-Pad.
Patent for a pneumatic knee-pad, to protect the clothing and relieve pain of workers who kneel for prolonged periods of time.
Date:
December 6, 1921
Creator:
Shelton, James T.
System:
The Portal to Texas History
Gasoline Wash Furnace
Patent for a gasoline wash furnace designed for use in heating water for clothea
Date:
November 7, 1922
Creator:
Adams, James V.
System:
The Portal to Texas History
Piston-Ring.
Patent for metallic piston rings to allow for expansion and contraction without leakage.
Date:
June 15, 1920
Creator:
Jordan, Robert M.
System:
The Portal to Texas History
Rail Joint and Brace.
Patent for an improvement to rail joint structures that extends structural longevity by bracing the rails against each other.
Date:
June 1, 1920
Creator:
Buck, Landon A.
System:
The Portal to Texas History