107 Matching Results

Search Results

Log-Turner

Description: Patent for "that class of log-turners which is operated by power, and has for its object to provide a device that will be quick and positive in its operation" (lines 39-42).
Date: May 10, 1887
Creator: Ferris, Henry Murry & Gallon, William
Partner: UNT Libraries Government Documents Department

Casing Head

Description: Patent for a Case-Head. This case-head is used in oil wells. Its purpose is to ensure a tight seal around a pipe so that gas can flow properly through the tube.
Date: August 10, 1918
Creator: Kinzbach, Frank
Partner: UNT Libraries Government Documents Department
Back to Top of Screen