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Self-Lubricating Box and Shaft Bearing

Suspension Truss Bridge, Powdered Coal for Unhealthy Plants and more

Alloys for Bells, Gongs, Cymbals, Etc.

Heat and Light - June 8, 1872

Improved Puddling Tool

Riveting Device

Mill Step

Discharging Coal

Steam Propulsion on Canals

Peart's Patent Pit Car Wheel

Strengthening Emery Wheels

Information on Gum Copal

The United States Senate on Compensation to Inventors

Eight Hours' Work and Ten Hours' Pay

The Sewing Machine Ring in a New Role

Screw Elevators

Recent American and Foreign Patents - June 8, 1872


  • From the Editor

    Answers to Correspondents - June 8, 1872

  • Recommended

    New Books and Publications - June 8, 1872

  • Departments

    Notes and Queries - June 8, 1872

  • Business and Personal - June 8, 1872

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