UNT Libraries Government Documents Department - 4 Matching Results

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Combined Ruler and Paper-Cutter

Description: Patent for a ruler that may also be used as a paper cutter. Illustrations included.
Date: June 28, 1910
Creator: Dibrell, Frank A.

Steam-Boiler Indicator.

Description: 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.

Pipe-Wrench

Description: 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.

Gin Saw Cleaner

Description: Patent for a gin saw cleaner. Illustration included.
Date: March 28, 1911
Creator: Pillow, James G.
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