5 Matching Results

Search Results

Results: 1 - 5

Valve Means for Oil Well Swivels

Description: Patent for a valve that may be incorporated into the swivel of an oil well drill to aid in expediting the drilling process.
Date: February 27, 1917
Creator: Lincoln, B. Hugh
Partner: UNT Libraries Government Documents Department

Bottle Washing Apparatus

Description: Patent for bottle washing machine.
Date: February 27, 1917
Creator: McDaniel, Joshua S.
Partner: UNT Libraries Government Documents Department

Refrigerator

Description: Patent for improvements for vacuum refrigerators such that cold air circulation and heat exclusion are improved, including illustrations.
Date: June 27, 1922
Creator: Knutson, William K.
Partner: UNT Libraries Government Documents Department

Door-Check.

Description: Patent for a door check that will be able to hold the door in any desired position to which it may be moved and it will prevent the slamming or sudden closing of the door.
Date: November 27, 1917
Creator: Winfrey, Edgar M. & Pike, John J.
Partner: UNT Libraries Government Documents Department

Cotton-Threshing Machine.

Description: Patent for an improvement to cotton-threshing machines that threshes "the cotton crop by extracting and separating the cotton locks from the bolls and stalks" (lines 13-15). This patent includes instructions and illustrations.
Date: November 27, 1917
Creator: Patterson, Warren A. & Kemp, Joseph A.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen