UNT Libraries Government Documents Department - 5 Matching Results

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Expansive and Contractive Well-Drill
Patent for improvements for expansive and contractive well drill involving improvements to drill bits.
Fence-Post
Patent for a plastic fence post for use with wire fences that has pre-made openings for the wires to go into to and attach to the fence post.
Fluid-Clutch
Patent for a fluid-clutch that prevents jarring when the clutch is taken off.
Garment-Protector.
Patent for an easily detachable garment protector "for use with trousers and overalls to protect them from wear and from becoming soiled while in use" (lines 10-13) including illustration.
Mechanism for Operating Railway-Switches.
Patent for a device "for automatically operating the switches of steam, electric, and street railways by the movement of a locomotive or car, thereby obviating the necessity of a brakeman, driver, motorman, or other person alighting from the car or train for such purpose" (lines 12-18).
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