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Swingletree

Description: Patent for a swingletree that equalizes the strain of the draft animal when the traces are connected in an irregular manner.
Date: July 20, 1920
Creator: Bosse, William F.
Partner: UNT Libraries Government Documents Department

Draft-Equalizer

Description: Patent for a draft-equalizer which is an apparatus adapted to be used for, "three draft animals, one pulling against two animals.
Date: March 2, 1915
Creator: McCall, Robert A.
Partner: UNT Libraries Government Documents Department
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