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Features

Electro-Pneumatic Block Signal System

Soda Ash

An Improved Alarm Lock

An Improved Means of Channel Protection

Low Water Alarm and Flue Cleaning Device for Steam Boilers

The Victor Safety Bicycle

A Portable Lemonade Holder and Glass Washer

An Improved Key Fastener

An Improved Atomizer

A Nut and Washer for Vehicle Axles

An Improved End Gate for Wagons

Mountains of the Moon

An Improved Bridge Flooring

An Improved Camera

Automatic Recording Signal for Railroads

Queen's New Triple Plate Toepler-Holtz Machine

To Inventors- April 5, 1890

Departments

  • Letters

    Correspondence- April 5, 1890

  • Recommended

    New Books and Publications- April 5, 1890

  • Departments

    Recently Patented Inventions- April 5, 1890

  • Business and Personal- April 5, 1890

  • Notes & Queries- April 5, 1890

  • Index of Inventions- April 5, 1890

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April 05, 1890

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