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    Features

    Electro-Pneumatic Block Signal System

    Soda Ash

    Low Water Alarm and Flue Cleaning Device for Steam Boilers

    An Improved Means of Channel Protection

    An Improved Alarm Lock

    The Victor Safety Bicycle

    A Nut and Washer for Vehicle Axles

    An Improved End Gate for Wagons

    An Improved Key Fastener

    An Improved Atomizer

    A Portable Lemonade Holder and Glass Washer

    Mountains of the Moon

    An Improved Bridge Flooring

    An Improved Camera

    Queen's New Triple Plate Toepler-Holtz Machine

    Automatic Recording Signal for Railroads

    To Inventors- April 5, 1890

    Departments

    • Letters

      Correspondence- April 5, 1890

    • Recommended

      New Books and Publications- April 5, 1890

    • Departments

      Notes & Queries- April 5, 1890

    • Business and Personal- April 5, 1890

    • Recently Patented Inventions- April 5, 1890

    • Index of Inventions- April 5, 1890

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    April 05, 1890

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