Resource Type
Counties
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Charge-Moistening Device for Internal-Combustion Engines
Patent for an attachment for cars. This attachment reduces carbon deposit in the cylinder and on the valves of the car.
Date:
November 23, 1920
Creator:
Smith, Charles W.
System:
The Portal to Texas History
Forge Locked Grating.
Patent for a forge locked grating for use in jails, which does not collect dirt and is very rigid.
Date:
November 23, 1909
Creator:
Youngblood, David Franklin
System:
The Portal to Texas History
Wood Screw.
Patent for a new and improved wood screw. This design "consists of a screw-head having on the underside . . . cutting-edges alternating with flat and deep interspaces or notches, said notches completely filling the circuit of the screw-head and the notches gradually increasing in width and depth from the screw-shank to the crown of the head, thus enabling the cutters to clear themselves" (lines 12-20).
Date:
November 23, 1880
Creator:
Eckford, John
System:
The Portal to Texas History