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Traction Gang Plow

Description: Patent for a traction gang plow. This invention uses multiple disks for furrowing. Illustration included.
Date: May 21, 1907
Creator: Johnson, Charles J. & Lumpkin, James J.

Car Coupling.

Description: Patent for a new and improved coupling for railroad-cars. This design consists in "[t]he combination of the draw-head, the trip-block pivoted on the upper side of the same, the trigger secured to the upper side of the draw-head, and the spring bearing on the trip-block" (lines 82-86).
Date: May 21, 1889
Creator: Woolsey, Charles Alexander & Woolsey, William Wesley
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