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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.
Partner: UNT Libraries Government Documents Department

Header.

Description: Patent for "new and useful improvements in Headers," including illustrations.
Date: April 17, 1917
Creator: Pritchett, William V.
Partner: UNT Libraries Government Documents Department

Dehydrator.

Description: Patent for a continuous dehydrator that has specific use for gold and silver ores, including instructions and illustrations.
Date: April 17, 1917
Creator: Biesel, Charles
Partner: UNT Libraries Government Documents Department

Air Brake Attachment.

Description: Patent for "mechanism for use in connection with railway cars for automatically controlling the air brakes," including instructions and illustrations.
Date: April 17, 1917
Creator: Flowers, Malon Inghram
Partner: UNT Libraries Government Documents Department
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