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Glafcke's Improvement in Prison Construction

Agricultural Railways

Simple Slide Changer and Eclipser

By Geo. M Hopkins

English Railway Exhibit for Chicago

An Automatic Knife Grinder

An Improved Car Coupling

An Improved Sleeping Car

An Attachment for Beds

Improved Method of Stringing Pianos

An Improved Railway Block Signal

The New Engineering Building of Pennsylvania State College

Germ-Proof Water Filter and Cooler

The Cruiser Baltimore in Dry Dock

Boilers for the New Cruiser Cincinnati

Fountain of Saint George and the Dragon, Vienna, by Anton Dominik Bitter Von Fernkorn

Birds Which Nest in Cavities and Burrows

By Morris Gibbs

To Inventors - April 8, 1893


  • Letters

    Correspondence - April 8, 1893

  • Recommended

    New Books and Publications - April 8, 1893

  • Departments

    Recently Patented Inventions - April 8, 1893

  • Business and Personal - April 8, 1893

  • Notes and Queries - April 8, 1893

  • Index of Inventions - April 8, 1893

  • Patents! - April 8, 1893

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