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Combination Drill Bit and Drill Shank
Patent for "Improvements in Combination Drill-Bits and Drill-Shanks" (lines 6-7) including illustrations.
Date:
December 30, 1919
Creator:
Humason, Granville A.
System:
The Portal to Texas History
Liquid Dispensing Apparatus.
Patent for "certain new and useful Improvements in Liquid Dispensing Apparatus" (lines 5-7) describing new improvements, including instructions and illustrations.
Date:
November 28, 1916
Creator:
Bradley, Richard C.; Kinnebrew, Lee; Eastham, J. Malley & Ireland, C. Frank
System:
The Portal to Texas History
Oxygen-Generator
Patent for an oxygen generator that refills as it is emptied.
Date:
February 7, 1911
Creator:
Bradley, Richard Clinton
System:
The Portal to Texas History
Locking Mechanism
Patent for locking mechanism, particulalry used in locking liquid dispensing machines.
Date:
January 30, 1917
Creator:
Bradley, Richard C.
System:
The Portal to Texas History