Lifting-Jack.
Description:
Patent for a strong, simple, and easily-operable lifting-jack meant for use in railroad car-axle boxes. It is a lifting bar with ratchet teeth, a lever that pivots against the lifting bar, a mechanism that holds and releases the bar, a pawl, and a double-arm spring connected to the pawl.
Date:
August 13, 1895
Creator:
Hough, William S.
Partner:
UNT Libraries Government Documents Department