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Adjustable WIndow Shade Bracket
Patent for an adjustable window shade.
Date:
May 20, 1913
Creator:
Brown, James R.
System:
The Portal to Texas History
Worm Drive Mechanism for Windmill Engines
Patent is for improved wind mill drive shaft and reciprocating member called a "worm".
Date:
May 16, 1917
Creator:
Eller, Tom & Eller, Pernell D.
System:
The Portal to Texas History
Rotary Engine.
Patent for a new rotary engine containing a steam chest to hold fluid which flows into an exhaust chamber to reduce back pressure.
Date:
May 19, 1914
Creator:
Rhoades, Charles A.
System:
The Portal to Texas History