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Door-Check.
Patent for a door check that will be able to hold the door in any desired position to which it may be moved and it will prevent the slamming or sudden closing of the door.
Date:
November 27, 1917
Creator:
Winfrey, Edgar M. & Pike, John J.
System:
The Portal to Texas History
Cotton-Threshing Machine.
Patent for an improvement to cotton-threshing machines that threshes "the cotton crop by extracting and separating the cotton locks from the bolls and stalks" (lines 13-15). This patent includes instructions and illustrations.
Date:
November 27, 1917
Creator:
Patterson, Warren A. & Kemp, Joseph A.
System:
The Portal to Texas History