7 Matching Results

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Cranking Device (open access)

Cranking Device

Patent for cranking device to start internal combustion engines and designed specifically for automobiles.
Date: June 24, 1919
Creator: Harris, Irvin F.
System: The Portal to Texas History
Plow. (open access)

Plow.

Patent for improvements in plows used for agricultural purposes with an illustration. This improvement in design is specific to "provid[ing] a plow capable of being adjusted to cause engagement thereof with the earth at varying depths" (lines 10-12).
Date: June 24, 1919
Creator: Marshall, Andrew Jackson
System: The Portal to Texas History
Combined Rail-Anchor and Tie-Plate (open access)

Combined Rail-Anchor and Tie-Plate

Patent for a combined rail anchor and tie plate. The purpose of the invention is to combine the aforementioned devices to prevent rails from cutting into the ties, overturning, and spreading.
Date: January 24, 1919
Creator: Johnson, Robert
System: The Portal to Texas History
Drill-Bit (open access)

Drill-Bit

Patent for an improved kind of drill bit that is more durable against rock. The bit's cutting rollers have a frusto-conical shape, and are also detachable.
Date: January 24, 1919
Creator: Humason, Granville A.
System: The Portal to Texas History
Wire-Tightener. (open access)

Wire-Tightener.

Patent for improvements in wire-tighteners with an illustration. Specifically, the patented improvement is for a "device" that can "be used for the purpose of tightening strands of wire of a wire fence" (lines 11-14).
Date: June 24, 1919
Creator: Wilson, James G.
System: The Portal to Texas History
Projectile. (open access)

Projectile.

Patent for projectiles, more particularly to an explosive projectile. "One of the main objects of the invention is to provide a shell of the character stated which may be produced at relatively small cost..."
Date: June 24, 1919
Creator: Wilkins, Willie A.
System: The Portal to Texas History
Telegraph-Repeater (open access)

Telegraph-Repeater

Patent for a telegraph repeater. This invention improves repeaters by eliminating lag by simplifying the apparatus which increases capacity and clarity in transmission by maintaining a larger current strength.
Date: June 24, 1919
Creator: McKibben, Charles W.
System: The Portal to Texas History