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in subjects: "Science and Technology - Tools"  
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Wrench.

Description: Patent for "removable-jaw wrenches which can be converted into a pipe or monkey wrench at will." (Lines 12-14) Includes instructions and illustrations.
Date: December 29, 1896
Creator: Ezzell, Fletcher
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe-Clamp

Description: Patent for a pipe clamp for lifting and placing pipes and drill rods into and out of wells. Illustrations included.
Date: March 29, 1910
Creator: Rountree, Joseph G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Car-brake

Description: Patent for a car-brake that improves the ability of a train to stop its forward motion.
Date: December 29, 1900
Creator: Wise, Harry
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Auger.

Description: Patent for a new auger designed "to provide a construction in which the parts may be adjusted to cut angular holes entirely through a body, and also to cut angular countersinks concentric with cylindrical openings, such as are made for the reception of the square heads of bolts lag screws, &c.," (lines 10-16), which includes illustrations and instructions.
Date: April 29, 1902
Creator: Bundy, John J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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