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in subjects: "Science and Technology - Tools"  
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Valve-Gear for Engines.

Description: Patent for "a new and useful improvement in Steam-Engine Valve-Gears." The invention consists in "combining with a crank-shaft and a valve-shaft a lever, shaft, and two friction-wheels" (lines 4-9)
Date: July 6, 1880
Creator: Josserand, Peter
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Mechanical Movement

Description: Patent for invention has relation to mechanical movement and object is to provide a mechanical means for operating trip lever or other devices, and to this end the novelty consists in the system of lever cranks.
Date: July 28, 1885
Creator: Pickle, Obadiah A.
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

Car-Brake

Description: Patent for new and useful improvements for Caboose Cars' brakes. The brakes can be applied from within the car, and no strain is applied to the car frame or body.
Date: July 20, 1880
Creator: Dwyer, Denis R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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