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in subjects: "spring motors"  
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Spring Motor.

Description: Patent for a new and improved spring motor. This design consists in "[t]he combination of a motor with a drum attached to one of its shafts . . . the spring which bears upon the stop and which is rigidly secured to the frame at its outer end, the stop being pivoted . . . [and] a rod provided with a cone bearing laterally against said spring for increasing or decreasing the friction of the spring against the drum" (lines 73-84).
Date: February 11, 1890
Creator: Wallace, James T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Spring-Motor

Description: Patent for a spring motor for use in operating small devices such as churns.
Date: February 4, 1913
Creator: Dayton, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Fan Construction

Description: Patent for a fan construction. This invention uses a spring motor to provided hours of fan use.
Date: October 13, 1903
Creator: Burnes, Worley Walden
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Fan

Description: Patent for a a spring motor fan. Illustration included.
Date: January 8, 1907
Creator: Tomison, Willis Albert & Hitt, John F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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