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3 Matching Results
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Car-Brake
Patent for an invention that relates to innovations and improvements to railroad car-brakes.
Date:
May 28, 1901
Creator:
Boyers, Thomas Albert.
System:
The Portal to Texas History
Guard-Rail Clamp
Patent for a simple, durable and adjustable guard rail clamp for securing guard rails to the main rails of a railroad track "as at bridge approaches and opposite to frog points" (lines 11-12) without the use of drill bolt-holes.
Date:
November 28, 1905
Creator:
Butcher, Jasper; Thomas, James L. & Butcher, Jasper
System:
The Portal to Texas History
Permutation Lock.
Patent for a new and improved combination lock. This design consists of "[a] door having at its edges the sockets formed by ribs and mouths in combination with permutation-disks, seated in said sockets and handles" (lines 5-8).
Date:
June 28, 1881
Creator:
Sevier, Moses Nimrod
System:
The Portal to Texas History