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in creator/contributor: "Ackman, George, Jr."  
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Wheel Tire Machine

Description: Patent for a wheel tire machine. This invention if for taking off and putting on wheel tires. Illustration included.
Date: November 20, 1906
Creator: Meyers, Edna Lu
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Railroad Switch

Description: Patent for a railroad switch. "This invention relates to railroad-swtiches and is especially designed with reference to street railways and surburban lines" (9-11). Illustration included.
Date: October 16, 1906
Creator: Tucker, Argyle W. & Tucker, Hugh H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Automatic Valve

Description: Patent for an automatic valve that uses a lever to open and close quickly, with illustrations.
Date: November 20, 1906
Creator: Pinkerton, Henry S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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