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A Four-Mile Deposit of Iron Ore

Vienna International Electric Exhibition

The Problem of the Telephone

The Past Year in the Patent Office

What is an Artist?

The Star of Bethlehem

An Ammonia Still for Small Gas Works

Improved Sponge Filters

Electric Motors with Inductors Containing no Iron

Terra Cotta Lumber

Flexible Self-Gauging Faucet

The New Otto One-Horse Power Silent Gas Engine

A Glass Globe from which Three Hundred Watch Crystals were Cut

The Automaton Chess Player

Agricultural Inventions

Miscellaneous Inventions

Mechanical Inventions

Engineering Inventions


  • Departments


  • Recent Inventions

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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February 17, 1883

20% Sitewide for President's Day