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Ore Separator
Patent for ore separator. This invention "relates to separators or concentrators for separating or extracting gold from pulverized quartz sand or bearing dirt" (line 8-11). Illustration included.
Date:
May 11, 1909
Creator:
Donovan, John T., Sr.
System:
The Portal to Texas History
Post-Auger
Patent for a post auger.
Date:
May 12, 1903
Creator:
Sanford, James Dobbs
System:
The Portal to Texas History
Railway-Switch Stand.
Patent for a railway switch stand that locks "a switch of this class and from which the lock cannot be removed except when the switch is fully locked, thus obviating accidents by always insuring a locked condition of the switch after operation and thereby preventing the switch from being subsequently actuated by unauthorized persons" (lines 11-20), including illustrations.
Date:
May 16, 1916
Creator:
Berger, James H. & Rosson, George T.
System:
The Portal to Texas History
Ventilator-Flue.
Patent for a flue made of separate parts so that it can be disassembled for more efficient transport, including illustrations.
Date:
May 27, 1902
Creator:
Goodwin, Thomas J.
System:
The Portal to Texas History
Washing-Machine.
Patent for an improvement to washing machines in which clothes are cleansed with the aid of a plunger apparatus propelling soapy water through them.
Date:
May 5, 1914
Creator:
Terry, David C.
System:
The Portal to Texas History