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Thread-cutting Tool.
Patent for a thread cutting tool developed to efficiently thread bolts, rods, and other parts without damaging the ends of the thread, includes illustrations.
Date:
August 5, 1919
Creator:
Newman, Malcolm A.
System:
The Portal to Texas History
Swingletree Clip
Patent for providing an improved form of swingletree clip which is simple in construction, may be cheaply made and in which the eye which connects the hook to the clips swiveled so that the hook may rotate and thus there will be no change of disengagement between the draft connections and the swingletree.
Date:
August 14, 1917
Creator:
Leasman, John D.
System:
The Portal to Texas History
Cotton-Chopping Machine
Patent for a cotton chopping machine. Illustrations included.
Date:
August 8, 1911
Creator:
Lynn, Walter Hugh
System:
The Portal to Texas History