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Bridge.

Description: Patent for a new and improved bridge. This design consists in "the combination, with the base, stringers, the top arched bars, and the upright tie-bars, of the intermediate stringers, arched bars, and their horizontal tie-bars, and wedge-keys . . . whereby the structure is greatly strengthened" (lines 85-91).
Date: December 13, 1881
Creator: Ibel, Justus H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Nut Lock.

Description: Patent for a new and improved nut-lock. This design "is to produce a nut-lock which will require a minimum number of parts to adjust, will require no other tools than a wrench, which will stay where adjusted in spite of any amount of pounding or concussion, and which, when desired, may be removed without difficulty. To this end [the] invention consists in a nut provided with a serrated face and a washer having sharp spring-lips engaging with the serrations. [The] invention also consists in a pe… more
Date: December 6, 1887
Creator: Parks, John W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Car Construction.

Description: Patent for "a construction which will permit the speedy and easy removal of brake supporting blocks or equivalent parts from the lower or floor frame of a car and the substitution of others without displacement or injury of other parts of the car." (Lines 13-17) Includes instructions and illustrations.
Date: December 25, 1894
Creator: Coffin, Walter E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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