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Well-Boring Apparatus

Description: Patent for "new and useful improvements in well boring apparatus. The object of the invention is to provide an apparatus of the character described embodying a rotary table and a novel means for connecting the same to the string of pipe, which extends down into the well and which is rotated by said table and in turn rotates the boring tool carried by the lower end of said spring of pipe" (lines 9-18) including instructions and illustrations.
Date: October 19, 1920
Creator: Decker, Harry R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Swivel for Rotary Drills

Description: Patent for a swivel for rotary drills used for wells of oil, water, and gas. This swivel ensures no substances, such as sand, get into the parts of the drill that move.
Date: October 5, 1920
Creator: Humason, Granville A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton-Chopper

Description: Patent for a cotton-chopper with two moveable, adjustable cutting apparatuses, which is operated using the foot. One of the cutters moves along the path of travel of the device and the other is stationary, as to prevent the chopper from pulling the cotton plant from the ground while cutting. Patent includes illustrations.
Date: October 5, 1920
Creator: Dawson, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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