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Features

Union Arch, Washington Aqueduct

Separation of the Comet

Poisonous Refreshments

Fulminating Compounds

The Manufacture of Celluloid

Steam Boiler Notes

Centripetal and Centrifugal Motions in Animals

Improved Spring Hinge

New Mechanical Movement

New Glove Fastener

Mechanical Inventions

Agricultural Inventions

New Tire Tightener

Collapse of a Steel Boiler Flue

By S. N. Hartwell

Phosphorescent Substances

Electro-Massage

New Reflector for Suspended Lamp

Miscellaneous Inventions

Improvement in Buttons

Volumetric Assay of Bullion, Alloys, Etc.

Dynamic Electricity

By M. Hopkins

Engineering Inventions - July 23, 1881

Departments

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    Recent Inventions

  • New Inventions - July 23, 1881

  • Business and Personal - July 23, 1881

  • Index of Inventions - July 23, 1881

  • New Books and Publications - July 23, 1881

  • Notes and Queries - July 23, 1881

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July 23, 1881

Think Outside the Gift Box