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Lawn-Mower Sharpener.

Description: Patent for a new device that improves lawn mower sharpeners, including illustrations. It is a detachable device that attaches directly to the lawn mower and sharpens the blades while in use.
Date: October 17, 1922
Creator: Lancaster, Edmund Banning
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Lock-Nut.

Description: Patent for a nut lock that secures two nuts of a pair within a tubular casing through opposing threading and rotation, where one nut is immobilized and the other remaining adjustable to meet situational need. Illustrations included.
Date: February 17, 1920
Creator: Greer, Benjamin J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Water-Level.

Description: Patent for an instrument to determine a level at widely distant points or determining inclinations and which may be correctly read under conditions where a level cannot be held erect. Also known as hydrostatic leveling, this instrument is comprised of flexibly connected liquid containers that are spaced apart at certain distances.
Date: August 17, 1920
Creator: Kaspar, John & Beran, Rud F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Tractor Turning Mechanism.

Description: Patent for a tractor turning mechanism that will allow tractors to turn at any angle up to a right angle by locking one of the driving ground wheels into a pivot point for the other wheels of the tractor.
Date: February 17, 1920
Creator: Chenoweth, William B.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Trombone.

Description: Patent, including illustration, for "a musical instrument slide and is more particularly designated as a bearing or stocking for a trombone or other similar instruments in which it is desirable to provide a smooth bearing for the slidable part of the instrument" (page 1, lines 9-13).
Date: February 17, 1920
Creator: Ackley, William D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Heating Apparatus.

Description: Patent for a heating apparatus that heats and dries sand or other abrasive materials. A furnace or heating member is attached to a receptacle, which heats and dries the materials. Materials are drawn out via a suction pipe.
Date: August 17, 1920
Creator: Cleveland, David P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad-Signal

Description: Patent for a railroad signal which will prevent train collisions at railway crossings, with illustrations.
Date: February 17, 1920
Creator: Humphrys, Sidney E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pipe Coupling.

Description: Patent for pipe coupling in which the ends of pipes have interlocking attachments which can be both dissembled and reinforced for protection against accidental disengagement.
Date: August 17, 1920
Creator: McCullar, Willie A. & Ayraud, Jules J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Signaling Device.

Description: Patent for a signaling device for vehicles, also known as a turning signal. This invention is meant to allow the signaling device to be seen by the driver of the vehicle and the driver of a vehicle approaching the turning vehicle.
Date: February 17, 1920
Creator: Wetter, Ralph E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Toupee and Wig Retainer

Description: A patent for a single-sided adhesive that holds a toupee or wig in place on the scalp without causing built-up residue to adhere to the wig.
Date: May 17, 1921
Creator: Tapscott, John Christoper
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Roller-Distributor.

Description: Patent for the invention of a roller distributor, or roller cam, that can "provide novel means whereby friction will be reduced" (lines 12-13) through the use of "a novel spring means being employed" (lines 13-14) in certain affordable, widely used vehicles.
Date: August 17, 1920
Creator: Lopez, Bruno
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Slime-Pulp Thickener

Description: Patent for a device for thickening slime or pulp in the treating of ores wet milling. The device controls the disbursement of slim pulp in the thickener, producing a better solid to liquid ratios.
Date: August 17, 1920
Creator: Allen, Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Dental Handpiece.

Description: Patent for an improvement on a dental handpiece that is made of fewer parts and is cheaper to make. It makes insertion and removal of the drill easier, and keeps the drill in place more securely.
Date: August 17, 1920
Creator: Graves, Robert E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Hand Harvester.

Description: Patent for a hand harvester that contains a plate and cutter to be used for harvesting corn and maize with more ease.
Date: August 17, 1920
Creator: Taylor, Joseph S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gauge Cock.

Description: Patent for steam gauge or test cocks that provides a simple and economical gauge cock for steam boilers by which the steam can be readily tested and which is adapted to close the orifice automatically to provide a constructions which will not be disarranged in operation.
Date: October 17, 1922
Creator: Woodruff, Lovell H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electrical Testing Device.

Description: Patent for new and useful improvements in electrical testing devices. The invention provides references to innovative changes that allow for improved high-tension coil and armature testing.
Date: August 17, 1920
Creator: Bierbower, Richard C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electrical Testing Device

Description: Patent for a device to test electrical circuits for faults which is cheaper to manufacture, easier to use, smaller and more durable.
Date: August 17, 1920
Creator: Bierbower, Richard C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Piston Ring

Description: Patent for improvements to piston rings to reduce leakage through piston grooves, rings, and joints.
Date: April 17, 1920
Creator: Olsen, Jens J. & Edwards, Lewis E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Steering Attachment.

Description: Patent for a steering attachment that keeps the steering wheels of a motor driven vehicle straight. This device is simple and relatively inexpensive, among other advantages.
Date: May 17, 1921
Creator: Huffman, Orla L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary-Razor

Description: Patent for rotary razors that includes a rotating blade that approaches and passes over the skin to avoid cuts or scrapes. The blade on the razor is tilted too far out to cause cuts and scrapes, yet it provides a sufficient shave.
Date: August 17, 1920
Creator: Jones, Sidney P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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