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A Badly Constructed Boiler

The Vienna Exposition--Professor Thurston Explains

The President's Message and the Vienna Exposition

Steam Engine Economy and Steam Boiler Economics

Concentrated Solar Rays

Germany in the Vienna Exposition

Torpedo Warfare

On the Resistance of Buildings Stones to Fire

Horace Greeley

New Burlington House, Piccadilly, London

Button Hole Cutter

New Method of Brewing

A Patent Poisonous Pavement

Patents in Japan

Another Terrible Boiler Explosion in Ohio

Key Seat Cutting Machine

Improved Drawing Table

A Novel Railway Ferry Boat

The New Prussian Rifle

Phineas L. Slayton

Decisions of the Courts

United States Circuit Court, Eastern District of New York

Answers to Correspondents

Recent American and Foreign Patents

Communications Received

Value of Patents, and How to Obtain them

Practical Hints to Inventors

Patent Cold Rolled Shafting


  • Departments


  • Business and Personal

  • Notes and Queries

  • New Books and Publications

  • Index of Inventions

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December 21, 1872