UNT Libraries Government Documents Department - 19 Matching Results

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Safety-Elevator.

Description: Patent for a elevator with a safety feature to prevent the car from falling rapidly to the bottom of the shaft if a cable breaks.
Date: March 8, 1910
Creator: Dunlap, Henry William & Lumbley, Joseph Slater

Lock Mortiser

Description: Patent for a lock mortiser. The object of this invention "is to provide a light, portable machine arranged to be clamped to the work piece, so that the lock mortise as well as the key hole and the bolt opening may be conveniently cut with one adjustable of the machine" (lines 11-15). Illustrations included.
Date: September 13, 1910
Creator: New, Luke Mosely

Cotton Topper

Description: Patent for a cotton topper. This invention is designed to deal with weeds and is attached to the frame of an ordinary cultivator or plow. Illustrations included
Date: March 15, 1910
Creator: Bickers, Lucius T. & Lee, Thomas J.