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Timber-Jack.

Description: Patent for timber-jacks which are "particularly adapted for use for persons using cross-cut saws on large pieces of timber."
Date: April 6, 1915
Creator: Barret, James H. & Barret, J. H.
Partner: UNT Libraries Government Documents Department

Roller Bearing

Description: Patent for improvement on roller bearings that include spaced rings and multiple rollers.
Date: November 2, 1911
Creator: Tatum, Franklin M.
Partner: UNT Libraries Government Documents Department

Screw-cutting Die.

Description: Patent for a screw-cutting die, including illustrations. The invention includes "a die-plate of special construction, adapted to cut either right or left hand threads" (lines 12-13).
Date: February 6, 1883
Creator: Müller, Joseph
Partner: UNT Libraries Government Documents Department

Rivet-Set.

Description: Patent for an improvement in rivet-sets which having various sizes of holes and cavities for cutting and setting; it can be riveted by hand or machine. Illustration is included.
Date: February 10, 1891
Creator: Wilson, William A.
Partner: UNT Libraries Government Documents Department