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Screw.
Patent for a new and improved screw. This design consists in "[a] screw, the body and shank of which are of corresponding diameter throughout their length, the shank terminating in a rounded end, and the shank and body being provided with a longitudinal straight channel extending throughout their lengths, one of the terminal shoulders of the channel being removed" (lines 4-10).
Date:
June 10, 1890
Creator:
Ericson, John
System:
The Portal to Texas History
Boring-Bit.
Patent for a boring drill. The invention creates a new means "for connecting the constituent members of the head so as to provide novel means for assembling the head with a driving element" (lines 19-22).
Date:
June 10, 1913
Creator:
Larnce, John B.
System:
The Portal to Texas History