526 Matching Results

Search Results

[Postcard from Virginia Ebeth Powell to Mrs. S. E. Powell Sr. - November 1, 1921]

Description: Postcard to Mrs. S. E. Powell, Sr. in Oglesby, Texas from Virginia E[?] Powell in Houston, Texas. Virginia writes about arriving in Houston with her mother. The front of the postcard depicts a small footbridge over a creek in Sam Houston Park in Houston, Texas. The bridge connects concrete footpaths on both sides of the creek, and is situated in front of large ferns and small red pavilions and buildings.
Date: November 1, 1921
Creator: Powell, Virginia Ebeth
Partner: Private Collection of T. B. Willis

Device For Unscrewing And Withdrawing Pipe.

Description: Patent for improving an existing device that unscrews and withdraws pipes from a well bore. The patented device can be operated in either direction to unscrew pipes stuck in a well bore.
Date: September 6, 1921
Creator: Thomas, William C.; Dickens, James C. & Fowler, Jesse W.
Partner: UNT Libraries Government Documents Department

Pump

Description: Patent for an improvement upon pumps to be used in deep well, such as oil wells. This pump includes a seal on the plunger to prevent leakage of fluid between the pump and the barrel.
Date: December 6, 1921
Creator: Humason, Granville A. & Burtschel, Julius A.
Partner: UNT Libraries Government Documents Department

Turbine Governor-Valve.

Description: Patent for a new turbine governor valve that allows for adjustments while the turbine is in operation, including illustrations.
Date: November 22, 1921
Creator: Lacy, Benjamin B.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen