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Valve Construction
Patent for improved valve construction which permits unobstructed passage from valves to intake and exhaust pipe in motor vehicles.
Date:
February 5, 1918
Creator:
Smith, Thomas Noah
System:
The Portal to Texas History
Elevator-Controller.
Patent for improvements to elevator-controllers, related "to a hand-power rope-elevator equipped with electrical operating mechanism and means whereby the elevator may be quickly and effectually controlled either automatically or manually" (lines 11-15), including illustrations.
Date:
February 5, 1901
Creator:
Dubinski, Benjamin
System:
The Portal to Texas History
Combined Latch and Lock for Screen Doors, etc.
Patent for a combined latch and lock for screen doors and other uses. Illustration included.
Date:
February 5, 1912
Creator:
Hart, Joel T. & Hart, John D.
System:
The Portal to Texas History