Extension-Ladder.
Description:
Patent for improvements in extension ladder by using two sliding ladder sections, "these two sections can be secured by a windlass and a hook detachably bolted to the upper rung of the upper section." (Lines 38-40, p.3) Illustration is included.
Date:
November 3, 1891
Creator:
Crews, Dayton H.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department