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Core-Taking Device
Patent for improvements to a core-taking device which will "form a core, in the process of drilling, and embodies means for severing the core, when formed, and retaining the same in the core barrel until, it is withdrawn for inspection" (lines 13-17), including illustrations.
Date:
June 20, 1922
Creator:
Christian, Walton G.
System:
The Portal to Texas History
Trap.
Patent for a small animal trap that prevents injury to the animal. When the animals step on the pedal inside the enclosure, a door is automatically dropped. The animal is trapped inside the enclosure.
Date:
June 27, 1922
Creator:
Dinkins, Earl T.
System:
The Portal to Texas History
Mop
Patent for "a simple and durable construction of mop in which the fibre holding element consists of strands of twisted wire" (lines 9-11) designed such that the mop maintains its shape with or without the handle, including illustrations.
Date:
June 20, 1922
Creator:
Welch, James. S.
System:
The Portal to Texas History