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Spirit-Level.

Description: Patent for a spirit level that is simple in construction and can easily determine vertical and horizontal planes accurately.
Date: March 13, 1906
Creator: Martin, Johann
Partner: UNT Libraries Government Documents Department

Dental Instrument.

Description: Patent for a dental-instrument holder which suitable handle allows to hold a clamping rod firmly while reaching out the difficult cavities and surfaces during the teeth cleaning.
Date: September 1, 1903
Creator: Harrell, Hardy B.
Partner: UNT Libraries Government Documents Department

Cut-Off

Description: Patent for a shut off for water supply tanks for cutting off the supply of water and preventing freezing. Illustrations included,
Date: March 26, 1912
Creator: Wood, William Thomas
Partner: UNT Libraries Government Documents Department

Device for Exterminating Insects on Plants.

Description: Patent for improvements in insects control device on plants in which it allows “convenient and practicality to apply smoke and fumes to the plants at any stage of growth, whereby any insect which may prey upon the plant or its fruits may be effectually exterminated.” (Lines 13-18) Illustration is included.
Date: March 22, 1904
Creator: Cottle, Thomas M.
Partner: UNT Libraries Government Documents Department

Rod Coupling

Description: Patent for rod coupling. This invention is for a type of rod couplings formed in sections for use as plunder-rod for wells. Illustration included.
Date: November 6, 1906
Creator: Lynn, John McKenzie
Partner: UNT Libraries Government Documents Department

Fan Blower

Description: Patent for a fan blower. The invention is designed to provide the maximum amount of air at the minimum amount of power. Illustrations included.
Date: December 29, 1903
Creator: Stukes, John Marion & Elliott, J. T.
Partner: UNT Libraries Government Documents Department