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Brake.
Patent for a brake (as it pertains to vehicles), that is operated by hand and that employs the use of brake bands and a drum to alter the momentum of a vehicle.
Date:
May 23, 1922
Creator:
White, John W.
System:
The Portal to Texas History
Measuring Device
Patent for improvements to the measuring device used to ascertain the depth of a well.
Date:
May 23, 1922
Creator:
Bevel, Jack H.
System:
The Portal to Texas History
Surgical Instrument.
Patent for a medical instrument used to perform circumcisions "without pain and bloodlessly" (lines 10-11) and illustration.
Date:
May 23, 1922
Creator:
Couch, Albert B.
System:
The Portal to Texas History
Hair Clipper
Patent for improving structure of clipper forming co-pending application Serial No. 469,842. Simplifying manufacturing and adding other features.
Date:
May 23, 1922
Creator:
Monroe, Collier
System:
The Portal to Texas History