7 Matching Results

Search Results

Results: 1 - 7

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

Sample-Taking Device

Description: Patent for new and useful improvements for devices to take samples from wells. Specifically designed to take samples from hard formations, such as rock or other hard surfaces, being pierced from the drill from any depth in a well.
Date: April 5, 1921
Creator: Dodds, Redus D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Excavating Bucket.

Description: Patent for an "excavating bucket designed for use in connection with an excavating machine" (lines 10-12).
Date: December 5, 1922
Creator: Dyke, Samuel
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

Safety-Razor

Description: Patent for a razor held in place by a guard that protects the user against injury and the razor against dulling. The safety razor is easy to clean and is designed to be "cheaply and easily manufactured" (lines 21-22).
Date: July 5, 1921
Creator: Benton, Columbus A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Washing-Machine

Description: Patent for a Washing-Machine which includes a base, a rotary rubbing drum with a foraminous concave rubbing bed of flexible material on the lower portion of the drum. Adjustable springs attached to the rubbing drum vary the drawing tension of the flexible rubbing bed.
Date: April 5, 1921
Creator: Seifert, John W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen