4 Matching Results

Results open in a new window/tab.

Combined Ruler and Paper-Cutter (open access)

Combined Ruler and Paper-Cutter

Patent for a ruler that may also be used as a paper cutter. Illustrations included.
Date: June 28, 1910
Creator: Dibrell, Frank A.
System: The Portal to Texas History
Pipe-Wrench (open access)

Pipe-Wrench

Patent for a self-adjustable pipe wrench that actively adapts to the material it is applied to by means of a moveable portion of the gripping jaw, with illustrations and instructions.
Date: May 28, 1918
Creator: Moore, Joseph D.
System: The Portal to Texas History
Steam-Boiler Indicator. (open access)

Steam-Boiler Indicator.

Patent for an improvement in steam boiler indicators to alert when the water has dropped below a specified threshold, including instructions and illustrations.
Date: April 28, 1914
Creator: Marrs, Vollie B.
System: The Portal to Texas History
Gin Saw Cleaner (open access)

Gin Saw Cleaner

Patent for a gin saw cleaner. Illustration included.
Date: March 28, 1911
Creator: Pillow, James G.
System: The Portal to Texas History