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    Features

    The Armour Institute, Chicago

    The Value of a Patent

    The World's Congress Auxiliary

    Crank Shaping Machine

    The Bicycle Industry

    By Ben Bolder

    An Improved Mine Car

    An Improved Motor

    An Improved Crude Oil Burner

    A Hat Support for Miners' Lamps

    An Improved Book or Copy Holder

    A Novel Motor

    The Universal Scale

    The New Coast Defense War Ship Terror

    Recreations in Photography

    An Improved Traction Engine

    Progress of the Cruiser Maine

    The Utilization of Old Tin Cans

    Departments

    • Letters

      Correspondence- March 24, 1893

    • Recommended

      New Books and Publications- March 24, 1893

    • Departments

      Recently Patented Inventions- March 24, 1893

    • Business and Personal- March 24, 1893

    • Notes and Queries- March 24, 1893

    • To Inventors- March 24, 1893

    • Index of Inventions- March 24, 1893

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    March 25, 1893

    See the World from a Different Perspective

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