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Mop
Patent for a mop attachment with an opening to receive a handle of the broom and a pair of attaching strips to be tied to the broom handle. It is used to prevent lateral shifting when in place on the broom.
Date:
November 30, 1920
Creator:
Glenn, William H.
System:
The Portal to Texas History
Slime-Pulp Thickener
Patent for a new and useful improvement in slime pulp thickeners
Date:
November 30, 1920
Creator:
Allen, Charles
System:
The Portal to Texas History
Contact-Shoe for Automatic Train-Stops.
Patent for a new contact shoe, used in rail transport, attached to the train car to conduct automatic stops despite possible hazards through the use of magents and electricity, including illustrations .
Date:
March 30, 1920
Creator:
Bulla, Melbern Bernie
System:
The Portal to Texas History