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Features

Hints to Inventors

The Decision in the Bell-Drawbaugh Telephone Suit

The Delay of Business in the Patent Office

Automatic Alarm for Bearings

Automatic Game Counter

A Novel Table

Casing for Pipes

Frankel's Registering Dynamometer

Double Steam Hammer

The New Orleans Exposition

A New Gas Engine

Improved Silo Press

The Camel Corps of the British Army

Recent Decisions Relating to Patents - December 20, 1884

An Improved Speed Indicator

Engineering Inventions - December 20, 1884

Miscellaneous Inventions - December 20, 1884

Special - December 20, 1884

Agricultural Inventions - December 20, 1884

Foreign Patents - December 20, 1884

Their Cost Reduced

Departments

  • Letters

    Correspondence - December 20, 1884

  • Departments

    Business and Personal - December 20, 1884

  • Notes and Queries - December 20, 1884

  • Index of Inventions - December 20, 1884

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis