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

Description: Patent for a new ratchet-wrench with "improved construction and combination of parts" (lines 26-27), including illustrations.
Date: February 2, 1886
Creator: Rettberg, Ernest Frederick & Ellis, Charles Carroll
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Tool for Drilling Wells.

Description: Patent for improvement in "tools for drilling or boring Artesian, oil, and other deep wells; and it has for its object to prevent the loss of the drill or auger or of any portion of the drill-rods" (lines 9-13) via an "improved means for connecting the tool to the lower end of the drill-rod" (lines 15-16) including illustrations.
Date: July 16, 1889
Creator: McLane, Hiram H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Telephone-Transmitter

Description: Patent for improvements to telephone transmitters by transmitting the sound waves into electrical currents.
Date: January 16, 1883
Creator: Crawford, Witsius A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Breech-Loading Fire-Arm.

Description: Patent for breech-loaded fire-arms, with illustrations. The purpose of the breech-loaded fire-arms was to improve existing fire-arms by allowing for a method to prevent accidental discharge.
Date: March 18, 1884
Creator: Schraud, Franz
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Barrel-Truck.

Description: Patent for a new barrel truck or wheeled dolly design for moving barrels or boxes more easily, including illustrations.
Date: December 27, 1887
Creator: Wilson, William W. & Newton, Jeremiah L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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