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Floor-Mop Wringer
Patent for a mop wringing frame that is portable and independent of the mop and the water receptacle. The device causes the mop to be subjected to a twisting action when the handle of the mop is rotated.
Date:
March 1, 1921
Creator:
Paul, Jennie Henry & Paul, William Robert
System:
The Portal to Texas History
Cut-Off for Concrete-Mixers
Patent for a cut-off valve for rotary concrete mixers. Illustrations included.
Date:
August 1, 1911
Creator:
Shero, Clarence E.
System:
The Portal to Texas History