Resource Type

Center-Gage and Micrometer (open access)

Center-Gage and Micrometer

Patent for improvements to a center gage and inside micrometer to "provide central support for dividers" (lines 15-16) including illustrations.
Date: January 11, 1921
Creator: Snell, Charles
System: The Portal to Texas History
Blow-Out Boot (open access)

Blow-Out Boot

Patent for a blow-out boot which would prevent the usual particulate from being able to enter the inner tire after a blow-out.
Date: January 4, 1921
Creator: Barnes, John A.
System: The Portal to Texas History
Blow-Out Shoe. (open access)

Blow-Out Shoe.

Patent for a new blow-out shoe for pneumatic tires which uses a pliable fastening instead of metallic connections or laces.
Date: January 4, 1921
Creator: Moore, Lee, R.
System: The Portal to Texas History
Can-Closure (open access)

Can-Closure

Patent for general use to securely close cans containing liquid so that invisible tampering, evaporation, and contamination cannot occur.
Date: January 6, 1920
Creator: Starcke, Eugene P.
System: The Portal to Texas History
Box Car Door Fastener (open access)

Box Car Door Fastener

Patent for a box door fastener used for railway box car doors. For use in sliding door style entrances, and does not require the alteration of doors once installed. Doors may also be fastened in place while also allowing to be in a slightly open position for ventilation of the interior.
Date: January 21, 1921
Creator: Wood, James Gillam
System: The Portal to Texas History
Drift Valve. (open access)

Drift Valve.

Patent for a drift valve for locomotive engines to effect automatic diversion of exhaust steam from the air pump to the smoke box, after the steam from the main throttle has been shut off.
Date: January 3, 1922
Creator: Gilman, Benoist P.
System: The Portal to Texas History
Automobile. (open access)

Automobile.

Patent for an automobile with a mechanism which may be extended to form a tent bed, or folded into a small compass. The folding bed of the automobile may be utilized to storm camp equipment when not used as a bed.
Date: January 4, 1921
Creator: Mackey, Franklin Orville
System: The Portal to Texas History
Carbureter (open access)

Carbureter

Patent for the carbureter for controlling the quality of the combustible mixture for internal combustion engines, such as automobiles requiring a wide range of variation in the proportion of fuel and air to efficiently and economically supply the demand.
Date: January 13, 1920
Creator: Guthrie, William S.
System: The Portal to Texas History