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  1. Acting in Turn (1974)

    Director
    Robin Jackson
    Producer
    George Seager
    Subject
    Engineering; Technology
    Distribution
    Out of distribution, Videocassette. U-matic, VHS. col. 20 min.

    Traces the development of the gear from the first recorded use in a crude form over two thousand years ago to its widespread use in many forms today. A lever is a means of transferring power. The gear wheel...

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  2. Action of Involute Gear Teeth (1965 Film)

    Subject
    Technology
    Distribution
    Film (16mm)

    An illustration of involute gear action with a working model: photo-elastic demonstration of loading.

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