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Cotton-Chopper-Tool-Lifting Mechanism.
Patent for a "hand and footlifting mechanism capable of independent operation whereby either the hand or the foot operations may be performed, and the tools or hoes either lifted without disturbing their fixed adjustment or their elevation adjusted as desired," (lines 14-20) including illustrations.
Date:
January 8, 1918
Creator:
East, Arthur R.
System:
The Portal to Texas History
Drill.
Patent for modified drill bit to improve "boring through rocks or other hard substances." (lines 10-11) including illustrations.
Date:
May 8, 1917
Creator:
Hensley, Sewell S.
System:
The Portal to Texas History