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Jack.
Patent for a jack for lifting heavy loads on railroads, which has an automatic steady movement of the load up and down without adjusting the jack settings.
Date:
August 6, 1907
Creator:
Blake, David Alexander & Blake, Charles William
System:
The Portal to Texas History
Axle-Setting Machine
Patent for a axle setting machine that can be used on any type of axle, has its own lever, and doesn't touch the inside of the axle collar.
Date:
May 7, 1907
Creator:
Roberts, John William
System:
The Portal to Texas History