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Timpe's Improved Elevators, Mechanism for Adjusting the Rollers of Carding machines, and more

Extension of Sarvin's Carriage Wheel Patent

The New Restaurant at Wimbledon Camp

Vitt's Improved Elevator Cup

Inauguration of the Mont Cenis Tunnel

Death of Professor D. H. Mahan

Progress of Underground Roadways

Fearful Explosion of Torpedoes--Coroner's Verdict

The Action of Trades Unions in Regard to Apprenticeship

The Fear of Cholera

Fair of the American Institute

Interesting Extension Cases

Answers to Correspondents- September 30, 1871

Applications for Extension of Patents- September 30, 1871

Queries- September 30, 1871

Official List of Patents—September 30, 1871

Issued by the U. S. Patent Office

Recent American and Foreign Patents- September 30, 1871


  • Letters

    Correspondence- September 30, 1871

  • Recommended

    New Books and Publications- September 30, 1871

  • Departments

    Business and Personal- September 30, 1871

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