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Aircraft

Description: Patent for Improvements to aircraft steering. The invention allows the pilot to adjust the center of mass.
Date: April 5, 1921
Creator: Johnson, Louis V.
Partner: UNT Libraries Government Documents Department

Well-Drilling Tool.

Description: Patent for a bit that can be attached to a rotary tool for drilling wells. It features a means for using water to dislodge any accumulated mud from the tool.
Date: April 5, 1921
Creator: Clore, Franklin H.
Partner: UNT Libraries Government Documents Department

Truss.

Description: Patent for a new truss designed to hold ruptures without discomfort, suitable for single and double ruptures. The truss features a novel spring plate, soft rubber pads, and adjustable waterproof bands.
Date: April 19, 1921
Creator: Downie, James H.
Partner: UNT Libraries Government Documents Department

Priming-Cup

Description: Patent for an improved version of the priming cup "shown in Patent No. 1,329,464, granted February 3, 1920" (lines13-14). Includes illustrations.
Date: April 5, 1921
Creator: Martinek, Stanley A.
Partner: UNT Libraries Government Documents Department

Attachment for Internal Combustion Motors

Description: Patent for an Attachment for Internal Combustion Motors. This new attachment provides many improvements in the regulation of auxiliary air, whether it enters or leaves the internal combustion motor (Shine). It also regulates hot or cold air, or can shut off the air supply entirely (Shine).
Date: April 26, 1921
Creator: Shine, John
Partner: UNT Libraries Government Documents Department

Dredge-Pump

Description: Patent for new and useful improvements to Dredge-Pumps. The pump is used to draw up sand and gravel from the bottom of a river.
Date: April 12, 1921
Creator: Stenberg, Anders Gustaf
Partner: UNT Libraries Government Documents Department

Ice-Carrier.

Description: Patent for an adjustable ice carrier which can be attached to and removed from the running board of an automobile, including illustrations.
Date: April 19, 1921
Creator: Cronin, John J.
Partner: UNT Libraries Government Documents Department

Treatment of Ores.

Description: Patent for the treatment of ores which has a improvised process of chloridizing ores, concentrates, and other metallurgical products.
Date: April 19, 1921
Creator: Hirt, Jules Hector
Partner: UNT Libraries Government Documents Department

Railroad-Tie.

Description: Patent for railroad ties and especially for a fie made from a log of wood.
Date: April 26, 1921
Creator: Bryant, Joseph D.
Partner: UNT Libraries Government Documents Department

Necktie-Holder

Description: Patent for improvements to necktie-holders, particularly to prevent the neck-tie from sliding down toward the lower portion of the collar.
Date: April 21, 1921
Creator: Potter, Arthur C.
Partner: UNT Libraries Government Documents Department

Process of Distilling Hydrocarbons

Description: Patent for distilling hydrocarbons from crude petroleum oil.
Date: April 19, 1921
Creator: Averill, Willard C., Jr.
Partner: UNT Libraries Government Documents Department

Grapple.

Description: Patent for improving grapples for regaining tools, particularly those that can be hidden and submerged.
Date: April 26, 1921
Creator: Ginter, James. C.
Partner: UNT Libraries Government Documents Department

Tire-Tool.

Description: Patent for a tool designed for mounting pneumatic tires on wheel rims.
Date: April 26, 1921
Creator: Boone, Daniel M.
Partner: UNT Libraries Government Documents Department

Garment-Hanger.

Description: Patent for a new garment hanger with supported arms that can be folded for storage, including illustrations.
Date: April 5, 1921
Creator: Morton, John R.
Partner: UNT Libraries Government Documents Department

Adjustable Luggage-carrier

Description: Patent for a luggage carrier that attaches to vehicles to carry packages of various sizes. Includes illustrations.
Date: April 5, 1921
Creator: Green, John R.
Partner: UNT Libraries Government Documents Department

Single-Trigger Mechanism for Double-Barrel Guns.

Description: Patent for a new single-trigger mechanism for double-barrel guns in which both barrels fire successively and premature discharge is prevented, including illustrations.
Date: April 26, 1921
Creator: Lindsay, Charles W.
Partner: UNT Libraries Government Documents Department

Carbon-Removing Tool

Description: Patent for a new and improved carbon removing tool, which allows for the removal of carbon from the pistons of internal combustion engines. Includes illustrations.
Date: April 12, 1921
Creator: Slagle, Eugene H.
Partner: UNT Libraries Government Documents Department

Magneto-Contact.

Description: Patent for magneto contacts, designed for easy removal, cleaning, and replacement, without short circuits, featuring novel construction features and parts arrangements.
Date: April 26, 1921
Creator: Rigsby, Virgi
Partner: UNT Libraries Government Documents Department

Hair-Clipper.

Description: Patent for "certain new and useful Improvements" (line 6) in the Hair Clipper, concerning the introduction of more efficient "double-acting clippers" (line 12), including illustrations.
Date: April 26, 1921
Creator: Jones, Sidney P. & Wallace, David P.
Partner: UNT Libraries Government Documents Department

Floor System.

Description: Patent for improved T-beams for floor support, which improve bonding between the beams and poured flooring and columns.
Date: April 26, 1921
Creator: Moore, Stuart B.
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.
Partner: UNT Libraries Government Documents Department

Feed Spout Barrier

Description: Patent for "a feel spout barrier for slime thickeners, settling tanks, separating tanks and the like" (lines 8-10) with instructions and illustrations.
Date: April 12, 1921
Creator: Allen, Charles
Partner: UNT Libraries Government Documents Department

Process of Forming Tubes

Description: Patent for the process of making tubes, especially tubes for producing, fitting, and/or refitting "eye-glasses, spectacles, &c." (lines 11-12).
Date: April 19, 1921
Creator: Rees, Herbert C.
Partner: UNT Libraries Government Documents Department

Tractor

Description: Patent for improvements in tractors for farm and road work. Improvements include enclosing all working parts within a protecting housing, mounting the motor for rotation, balance the weight, provide a wheel carriage to adjust the width and height, and to provide shifting gears.
Date: April 26, 1921
Creator: Ingram, Joseph D.
Partner: UNT Libraries Government Documents Department
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