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4 Matching Results
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Lifeboat
Patent for a lifeboat that "prevents the boat from capsizing" (lines 19-20) or sinking.
Date:
November 25, 1919
Creator:
Rusk, Raymond
System:
The Portal to Texas History
Marker.
Patent for improvement in markers "used in filing and card index cabinets" (lines 6-7).Meant to "provide a light, simply constructed V-shaped device" (lines 11-13), to mark the location of papers or files that have been temporarily moved from a filing system.
Date:
July 25, 1916
Creator:
Wells, Spencer A.
System:
The Portal to Texas History
Pump-Filter.
Patent for a pump filter, designed for double acting air pumps, that prevents the passage of foreign matter (oil, dust, dirt) from the pump outlet.
Date:
November 25, 1913
Creator:
Miles, Ross E.
System:
The Portal to Texas History
Gripper for Printing-Presses
Patent for a gripper for printing presses designed to hold the paper during printing more effectively. Illustrations included.
Date:
January 25, 1910
Creator:
Williams, John W.
System:
The Portal to Texas History