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in creator/contributor: "Montgomery, May"  
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Wrench.

Description: Patent for a chain wrench "in which both of the jaws are similar and interchangeable and provided with additional sets of teeth whereby the life of the jaws is increased" (lines 12-16) including instructions and illustrations.
Date: August 18, 1914
Creator: Hall, Samuel N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Nut Lock

Description: Patent for a mechanism to lock a nut in place on a bolt that also automatically releases when a wrench is applied to turn the nut.
Date: August 4, 1914
Creator: Edwards, Whitfield H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe Wrench.

Description: Patent for a double acting pipe wrench with detachable jaws which can be easily removed and replaced, and which will allow a section of pipe to be turned in either direction. The patent includes instructions and illustrations.
Date: August 18, 1914
Creator: Hall, Samuel N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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