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Features

Improved Methods of Building

Steamship Improvements

International Congress of Geologists

Electrical Pump

A Measuring and Drawing Implement

Improved Slide and Screw-Cutting Lathe

A Bedclothes Fastener

A Device for Tapping Barrels

The Rolling Wheel

The System of Military Dovecotes in Europe

A Hydrocarbon Burner for Stoves, Etc.

Pneumatic Signaling Upon the Central Railroad of New Jersey

Residence on Riverside Park, New York

Departments

  • Letters

    Correspondence- July 11, 1891

  • Recommended

    New Books and Publications- July 11, 1891

  • Departments

    Notes and Queries- July 11, 1891

  • Recently Patented Inventions- July 11, 1891

  • Business and Personal- July 11, 1891

  • To Inventors- July 11, 1891

  • Index of Inventions- July 11, 1891

  • Patents- July 11, 1891

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