Resource Type
Counties
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Timber-Jack.
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.
System:
The Portal to Texas History
Motor
Patent for a new and improved motor. This design's "object is to provide a motor possessing superior advantages in point of simplicity, inexpensiveness, easy operation, and general efficiency" (lines 11-14).
Date:
November 6, 1883
Creator:
Watkins, Samuel H.
System:
The Portal to Texas History
Screw-cutting Die.
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
System:
The Portal to Texas History