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Door Check.
Patent for a new and improved door check. This design consists in "the combination, with a wheel provided with annular offsets and journaled in a movable bearing, the brake, and the spring, of the sheath provided with vertical grooves for the U-shaped bearing" (lines 54-58).
Date:
July 3, 1888
Creator:
Bachman, Joseph A.
System:
The Portal to Texas History