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The Fastest Steam Launch

The Pneumatic Dynamite Gun

Photographic Notes - July 10, 1886

Operating Mechanism for Railway Signals

Improved Pumping Apparatus

Fruit Pulper

Boiler Sweeper

Adding Machine

Polarized Light

A Few Objects for the Polariscope

By Geo. M. Hopkins

Automatic Grain Weighing and Registering Machine

The Minneapolis Industrial Exposition

The Meigs Elevated Railway

New York Harbor

The Hall Type Writer

Mennig's Steam Engine

Miscellaneous Inventions - July 10, 1886

Engineering Inventions - July 10, 1886


  • Departments

    Business and Personal - July 10, 1886

  • Notes and Queries - July 10, 1886

  • Index of Inventions - July 10, 1886

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July 10, 1886

Confronting Common Wisdom