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The Watertown Arsenal Testing Machine

Patent "Innocents" Again in Congress

The Eads Ship Railroad

A Great Raft of Lumber

An Improved Jib Hank

An Improved Dump Cart

The Transportation of War Vessels by Railway

An Improved Gate

A Machine for Forming Boot or Shoe Heels

An Improved Safety Car Heater

An Improved Door Bolt

An Improvement in Attaching Ax Helves

An Improved Fireproof Car Heater

A Lamp for Christmas Trees

Improved Rocker for Ordinary Chairs

Automatic Safety Elevator

Centrifugal Dyeing and Bleaching Apparatus

Scientific Experiments with Simple Apparatus

By Geo. M. Hopkins

Agricultural Invention - December 24, 1887

Engineering Inventions - December 24, 1887

Miscellaneous Inventions - December 24, 1887

To Inventors - December 24, 1887


  • Letters

    Correspondence - December 24, 1887

  • Recommended

    New Books and Publications - December 24, 1887

  • Departments

    Business and Personal - December 24, 1887

  • Notes and Queries - December 24, 1887

  • Index of Inventions - December 24, 1887

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