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Hydraulic Swivel

Description: Patent for a hydraulic swivel to be used with rotary well drilling machines which will carry water to the drill head through a supply line and maintain that supply line in a given position during drilling operation.
Date: January 26, 1915
Creator: Decker, Harry R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Nut-Lock.

Description: Patent for a nut lock with a spring locking mechanism that is designed to be simple and efficient.
Date: October 26, 1915
Creator: Moerbe, Herman
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Buggy-Shafts

Description: Patent "is to provide a construction whereby the shafts and cross beam which connect the same may be held against relative movement" (lines 10-13).
Date: January 26, 1915
Creator: McMillan, Newton W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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