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Gigantic Lifting Wheels for the Copper Mines

Present Steam Engine Practice

Forming Spiral Springs

The Nile and the Soudan

Hostile Patent bills now Before Congress

Uniformity of Shop Heat

Improved Steam Cooker

Trunk Life Preserver

Improved Hose Coupling

Boring, Drilling, and Surfacing Machine

Improved Nut Lock

A Novel Velocipede

Dredger on the Tancarville Canal

Max Von Pettenkofer

A Recent Boiler Explosion at Cincinnati, Ohio

Engineering Inventions

Agricultural Inventions

Mechanical Inventions

Miscellaneous Inventions


  • Correspondence

  • Notes and Queries

  • Business and Personal

  • New Books and Publications

  • Index of Inventions

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