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Tuning Instrument.

Description: Patent for a tuning instrument that has interchangeable reeds and can find the fourth, fifth, and single tone of an octave.
Date: March 21, 1911
Creator: Norcross, Levi Watson
Partner: UNT Libraries Government Documents Department

Vapor or Gas Generating Apparatus

Description: Patent for vapor or gas generating apparatus. "This invention relates to an apparatus for generating vapor and gases from the air, earth, wood and other substances, for the treatment of internal and external diseases, the object of the invention being to provide a simple reliable, effective and economical apparatus whereby medical vapors or gases of various kinds may be rapidly and conveniently generated and used in the treatment and cure of various internal and external disorders" (lines 9-19)… more
Date: March 7, 1911
Creator: Norwood, Walter Nathaniel
Partner: UNT Libraries Government Documents Department

Reamer.

Description: Patent for a reamer with a hexagonal shaped body and shell, central hub, a series of plates, springs, and metal dogs. Used for reaming well drilling tubes, which are used to drill artesian wells and deep water, and for cleaning out the reamer's own interior.
Date: April 24, 1911
Creator: Sly, Charles
Partner: UNT Libraries Government Documents Department

Rail-Joint.

Description: Patent for the addition of interlocking extensions onto the ends of railway joints. The interlocking extensions make bolts and nuts unnecessary and provide a snug fit, which eliminates both lateral and longitudinal movement.
Date: October 10, 1911
Creator: Free, Andrew
Partner: UNT Libraries Government Documents Department
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