UNT Libraries Government Documents Department - 55 Matching Results

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Violin.

Description: Patent for violin with special arrangement of two strings. The two strings produce similar tones when vibrated.
Date: January 30, 1917
Creator: Rice, John Henry
Item Type: Refine your search to only Patent

Rail-Plate.

Description: Patent for rail-plate joint and fastener support improvement to increase load bearing capabilities, decrease vertical or lateral displacement by reinforced strength to support car wheel springing.
Date: March 13, 1917
Creator: Turpin, Herman L.
Item Type: Refine your search to only Patent

Game.

Description: Patent for a four-player checker game and a hinged gameboard to play it on which provides storage for the checkers when folded.
Date: March 27, 1917
Creator: Mason, James H.
Item Type: Refine your search to only Patent

Keyboard for Writing Machines.

Description: 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.
Item Type: Refine your search to only Patent

Writing-Machine.

Description: 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.
Item Type: Refine your search to only Patent
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