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Lock-Nut.

Description: Patent for a lock-nut which prevents the nut from accidentally rotating on the bolt, including illustrations. The nut is locked in position when a locking key is introduced to grooves on the lower surface of the nut and the adjacent face of the washer.
Date: February 13, 1906
Creator: Crawford, Hezekiah H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Water-Elevator.

Description: Patent for a water-elevator that elevates huge amounts of water for ranches and irrigating. The elevator "can be easily operated by the direct pull of a single animal, which passes and repasses the well during the operation of raising and lowering the well bucket, and by this means contemplates dispersing with the necessity of winding drums or windlasses and horse powers, which are usually employed in connection with water elevators" (lines 16-23).
Date: February 13, 1894
Creator: Campbell, George William
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Partner: UNT Libraries Government Documents Department

Record-Filing Cabinet

Description: Patent for a record filing cabinet designed to show every record within as well as records of different sizes.
Date: May 13, 1919
Creator: McCart, Robert, Jr.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Reciprocating Electric Engine

Description: Patent for "means for employing an ordinary continues current from a suitable source to produce an oscillating primary magnetic field of a solenoid-magazine and to use said magnetic field for setting a piston-like armature in a reciprocal axial motion to develop mechanical power in both directions" (lines 11-17).
Date: June 13, 1905
Creator: Wagner, Bruno Otto
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Partner: UNT Libraries Government Documents Department

Pulling Attachment for Vehicles.

Description: Patent for vehicle pulling attachment improvements for motor operative winch designed to retrieve stalled vehicles and includes driver foot pedal engagement.
Date: March 13, 1917
Creator: Zane, Edmund L.
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Partner: UNT Libraries Government Documents Department

Dynamometer for Locomotives.

Description: Patent for a new and improved dynamometer for locomotives. This design is "to provide a novel construction in dynamometers for indicating the traction power of locomotives" (lines 9-11). It consists in "a draw-head, a chamber containing a liquid located therein, a piston operating in said chamber, means for connecting said piston with the opposite draw-head, suitable tubing connecting with the said chamber, and a pressure-gage mounted upon or attached to the said tubing and actuated by the said… more
Date: January 13, 1891
Creator: Innes, Robert H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Account-Book.

Description: Patent for a new and improved account book that is arranged to improve accuracy of record-keeping and facilitate the referencing of different accounts.
Date: June 13, 1916
Creator: Zimmerman, Charles Levy
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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