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Simple Experiments in Polarized Light

By Geo. M. Hopkins

Photographic Notes - July 3, 1886

The Illuminating Gas Industry

Compressed Air for Life Boats

Night Sky-June and July- 1886

By Richard A. Proctor

Liquid Emptier

Improved Car Seat

Music Holder

Scraping Knife for Painters

Improved Sad Iron

Automatic Stop for Engines

Improved Woodworking Machine

Steel Wire Door Mat

Decisions Relating to Patents

U.S. Circuit Court—Northern District of Illinois

Improved Boring and Facing Machine

Experiments in Atmospheric Pressure and Condensation of Steam

By T. O'Connor Sloane

Triple Calla Lily

Miscellaneous Inventions - July 3, 1886

Engineering Inventions - July 3, 1886

To Inventors - July 3, 1886


  • Letters

    Correspondence - July 3, 1886

  • Recommended

    New Books and Publications - July 3, 1886

  • Departments

    Business and Personal - July 3, 1886

  • Index of Inventions - July 3, 1886

  • Notes and Queries - July 3, 1886

  • Patents

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