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Elevator-Wrench

Description: Patent for an improvement in elevator wrenches. The device is meant to be used with rotary drilling machines for "supporting the drilling the drill pipe and for holding it from rotation during the releasing of the several joins of the pipe when it is necessary to withdraw the drill from the well hole."
Date: October 13, 1914
Creator: Lebus, George Franklin
Partner: UNT Libraries Government Documents Department

Route-Indicator.

Description: Patent for an improved route indicator for automobiles "which not only visually indicates the characteristics and risks of the road" but in addition provides an "auditory signal to call attention to approaching hazards or dangers" (lines 36-41). Illustrations included.
Date: November 13, 1917
Creator: Cranmer, Howard
Partner: UNT Libraries Government Documents Department

Farm wagon Scale

Description: Patent for a farm wagon scale. Illustration included.
Date: June 13, 1911
Creator: Graves, Henry Lewis
Partner: UNT Libraries Government Documents Department
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