4 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Edwards, Charles R."  
Results: 1 - 4

Motor.

Description: Patent for improvements in motors designed for motor-vehicle operation. Cheaper manufacture and less expensive fuel are included as claimed improvements.
Date: June 5, 1916
Creator: Edwards, Charles R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Unscrewing Device for Pipe-Joints.

Description: Patent for an unscrewing device for pipe-joints, in the event that the drill stem gets stuck while drilling wells. This invention allows the user to unscrew "the joints of the drill stem" and withdraw "the same without the use of the left hand threaded string of pipe" (lines 35-38).
Date: March 23, 1920
Creator: Edwards, Charles R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Device for Forming Screens

Description: Patent for a device for forming screens that consist of perforated pipes and screening wires, which will prevent displaced wires and torn pipes during use.
Date: December 2, 1919
Creator: Edwards, Charles R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Wrench

Description: Patent for tools used for construction, plumbing, machinery, home renovations, and many more.
Date: February 27, 1923
Creator: Edwards, Charles R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen