UNT Libraries Government Documents Department - 6 Matching Results

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Improvement to Lifting-Jacks

Patent for the improvement of the lifting jack which allows the user to "lower the lifting bar by a step-by-step movement as well as to elevate the lifting bar by such a movement (lines 12-14). Includes instructions and illustration."

Date: January 12, 1915

Creator: Parker, Charles W. & Wittliff, Theodore H.

Ventilating-Fastener.

Patent for an improved tuft fastening device that provides ventilation through cushion tufts to make cushions cooler to the touch, including illustrations.

Date: May 8, 1917

Creator: Davis, Don M. & Underwood, Thomas J.

Fan Spring-Motor

Patent for a portable fan spring motor.

Date: January 28, 1913

Creator: Von Hohenstein, Charles H.

Roller Bearing

Patent for improvement on roller bearings that include spaced rings and multiple rollers.

Date: November 2, 1911

Creator: Tatum, Franklin M.

Piano-Hammer.

Patent for a piano hammer, which has a strip of striking material that can be moved over to a new section when one section wears out, to increase the life of the hammer.

Date: May 24, 1910

Creator: Young, Henry E.

Game Apparatus.

Patent for a new game apparatus that can be playing indoors or outdoors and made in both large and small sizes "in which the elements, of chance, skill, and endurance constitute important factors in the successful playing of said game." (lines 10-13) including instructions and illustrations.

Date: June 2, 1914

Creator: Schuler, Joseph & Overbeck, Harry A.