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Plate Retaining Device
Patent for a license plate holder for automobiles.
Date:
April 13, 1915
Creator:
Stafford, Frederick
System:
The Portal to Texas History
Writing-Machine.
Patent for writing-machine mechanism which prolongs the life of the ribbon and provides "means to rotate the platen step by step at each actuation of one or more of the keys" (line 20).
Date:
April 24, 1917
Creator:
Edwards, Alrah B. & Russell, Frank K.
System:
The Portal to Texas History
Keyboard for Writing Machines.
Patent for improved keyboards for writing machines "having its keys so arranged that the fingers of the operator may rest upon the keyboard in an easy and natural manner, the keys being so disposed with relation to each other that the fingers of the operator may reach all of them with the least possible strain or exertion" (lines 16-22). This improvement allows the operator to work at maximum speed and efficiency.
Date:
April 17, 1917
Creator:
Edwards, Alrah B. & Russell, Frank K.
System:
The Portal to Texas History