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5 Matching Results
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Propeller
Patent for a boat propeller that does not create a vacuum behind it and is more efficient than other propellers.
Date:
July 23, 1912
Creator:
Blake, David H.
System:
The Portal to Texas History
Bedstead
Patent for a bedstead. Illustration included.
Date:
October 31, 1905
Creator:
Davis, Augustus H.; Hummel, George F. & Gray, J. W.
System:
The Portal to Texas History
Mold for Typographical Casting-Machines.
Patent for a mold for typographical casting machines which may be altered to produce slugs of different sizes.
Date:
April 7, 1914
Creator:
Diaz, Pascual M.
System:
The Portal to Texas History
Spring-Washer for Piano-Flanges.
Patent for a spring washer for piano flanges that prevents the flanges from becoming loose over time.
Date:
December 5, 1911
Creator:
Mayor, Enoch Allen
System:
The Portal to Texas History
Fan and Motoro Therefor.
Patent for a motor-propelled fan that can attach to any support, especially beds steads and other furniture. The motor is simple and can be easily manipulated.
Date:
May 9, 1893
Creator:
Sneckner, George A. & Roth, Charles E.
System:
The Portal to Texas History