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6 Matching Results
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Improvement in the Propulsion of Vessels.
Patent for improvement in vibrating propellers with continued paddle action that can be attached to a line of boats.
Date:
December 30, 1873
Creator:
Macowitzky, Charles P.
System:
The Portal to Texas History
Improvement in Vibrating Propellers.
Patent for new and useful improvement in vibrating propellers.
Date:
December 22, 1874
Creator:
Macowitzky, Charles P.
System:
The Portal to Texas History
Blind Stop.
Patent for a new and improved blind-stop. This design consists "[i]n blind-stops, the rod, consisting of two parts connected by a thin piece of metal, in combination with a blind provided with a median open-slotted tapering screw and thumb-nut" (lines 49-53).
Date:
December 25, 1888
Creator:
Warren, Thomas
System:
The Portal to Texas History
Collapsible Crate
Patent for a collapsible crate. Illustration included.
Date:
December 1, 1903
Creator:
Orr, William H.
System:
The Portal to Texas History
Electric Switch
Patent for an electric switch. Illustration included.
Date:
December 10, 1912
Creator:
Ramsay, Robert L.
System:
The Portal to Texas History
Machine-Brake.
Patent for machine brake for regulating the speed of an automatic fan.
Date:
December 14, 1915
Creator:
Reeves, Elijah Winston
System:
The Portal to Texas History