UNT Libraries Government Documents Department - 3 Matching Results

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Design for an Insect-Exterminator.

Description: Design patent for an insect-exterminator that consists of a circular pan and a conical lamp-body arranged centrally within the pan and projecting above the plane thereof.
Date: April 11, 1899
Creator: Hightower, Elijah H.

Improved Bridge.

Description: Patent for an invention that "is to provide certain improvements in the construction of bridges, whereby the parts thereof, of wood, may be readily removed for the substitution of others, when decayed or broken, without interfering with the use of the bridge or weakening it (lines 10-15)". The patent includes instructions and illustrations.
Date: January 11, 1870
Creator: McDowell, H. S.

Plow.

Description: Patent for improvements to the turning-plow, with convertible attachments for other forms of plow.
Date: December 11, 1900
Creator: Armstrong, John Joshua, Sr.
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