Hoisting Apparatus.
Description:
Patent for improvements in hoisting apparatus by “employing two cables and two sheaves that one cable and one sheave operate to elevate the weight or object in an approximately-vertical plane, so as to avoid contact with any side obstruction, while the secondary cable can subsequently be slackened sufficiently to permit the traveling sheave of the hoisting-cable to run off in a lateral direction and carry with it the sheave of the slackened secondary cable, for the purpose of transferring the o…
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Date:
March 22, 1892
Creator:
Davis, Benjamin F.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department