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Sash Fastener

Description: Patent for a fastener of simple, reliable for locking a sash at any given point in its path-of-movement upon the window frame, without the use of springs or any other parts.
Date: October 20, 1914
Creator: Shipman, John Davis
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Equalizing Device for Pump-Rods.

Description: Patent for an improved equalizing device for pump-rods used in hand or windmill pumps that increases the operating efficiency and decreases the manufacture cost of the device.
Date: April 10, 1906
Creator: Shipman, John Davis
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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