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    Features

    "United States Patent Laws"

    The Inventor of the Automatic Gun

    Bishop Potter on Labor and Machinery

    An Advance in the Electrical Equipment of Steam Railroads

    The Berliner Telephone Transmitter Patent Sustained

    A Convenient Window Desk

    An Efficient Latch for Heavy Doors

    A Simple Bicycle Holder

    A Novel Music Leaf Turner

    A Shorthand Typewriter

    The Leak in the New Dry Dock, Brooklyn Navy Yard

    The Torpedo Boat Porter

    Harvard Observatory in Peru

    By S. I. Bailey

    An Arc Lamp that Operates in Any Position

    The Columbia Motor Carriage

    Departments

    • Recommended

      New Books, Etc. - May 22, 1897

    • Departments

      Index of Inventions - May 22, 1897

    • Recently Patented Inventions - May 22, 1897

    • Business and Personal - May 22, 1897

    • Notes and Queries - May 22, 1897

    • Patents - May 22, 1897

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    May 22, 1897

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