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Switch-Stand

Description: Patent for a switch stand with a switch that moves horizontally for the purpose of affording the operator greater and easier control over the switch. Illustrations included.
Date: September 28, 1909
Creator: Farrell, John T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Dry Separator

Description: Patent for a separator for mills designed to separate valuable material from extraneous material. Illustrations included.
Date: September 28, 1909
Creator: Snowden, Rene Ravenel
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Check-Valve

Description: Patent for a valve used for well drilling designed to be confine fluid around the pipe. Illustrations included.
Date: September 28, 1909
Creator: Kreiter, Richard F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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