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Clutch Clamp.

Description: Patent for a new and improved clutch-clamp. This design "is to provide a simple and effective device for lowering or hoisting the pipe or rods of pumps into bored wells or other places, such as mines or shafts, and without injury to the pipe or rod, such device being not only readily and easily handled in connecting it to or disconnecting it from the object to be raised or lowered, but capable of being manufactured at comparatively small cost" (lines 20-29).
Date: August 16, 1887
Creator: McCoy, John William
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bridge.

Description: Patent for "improvements in bridges of that class which are used for crossing streams or country roads, and for such other purposes as a bridge may be desired" (lines 15-18), with instructions and illustrations.
Date: August 16, 1887
Creator: Mitchell, Joseph
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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