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Vehicle-Spring

Description: Patent for the "improved construction of elliptical steel springs" (lines 7-8) in "carriage and car springs" (line 5) including instructions and illustration.
Date: June 22, 1880
Creator: Custer, George
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

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: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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