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Surgical Instrument.

Description: Patent for speculum instrument used in treating women's sexual and reproductive health with new plunger mechanism for inserting powdered medicines.
Date: July 18, 1916
Creator: Finley, Hulon Kirk
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Protractor.

Description: Patent for a new and improved protractor. This design "is to make a protractor or plotter by which may be calculated the length of the base, perpendicular, and hypotenuse of a right-angled triangle where the latitude and departure or the altitude and depression are given" (lines 15-20). To this end, it consists, "with the semicircular protractor provided with a rectangular opening the edges of which are graduated, and centrally-pivoted vernier, of the departure-scale arranged to move up or down… more
Date: June 10, 1890
Creator: Dolman, John H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Carpenter's Tool.

Description: Patent for carpenter's tool that has an "adjustable pattern" that can assist in "determining the exact size and configuration of the space in which a stair tread or riser is adapted to be fitted" (lines 9 - 12).
Date: February 11, 1919
Creator: McDermett, Jim E.
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Partner: UNT Libraries Government Documents Department

Carriage Bow Support

Description: Patent for a carriage bow support. This invention is designed for use with buggies and absorb shock and jarring motions. Illustration included.
Date: January 15, 1907
Creator: Ledbetter, Rufus C.
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Partner: UNT Libraries Government Documents Department
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