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Eight Light Dynamo

By M. Hopkins

Daniel Davis

Sea Lions in Central Park

The Celestial World

The Conjunction of Saturn and Delta Geminorum

New, Process for the Protection of Iron

The Designs for U. S. War Vessels

Decisions Relating to Patents - April 23, 1887

Improved Pan Lifter

Combined Tablet, Paper Weight, and Blotter

Improved Pen Holder Tip

Improved Stove

Improved Wagon Rack

Double Air Chamber Furring Tile

Lewis Tent Pole and Ventilator

Safety Set Screw for Collars and Pulleys

Connection Hanger for Electrotyping Apparatus

Improved Cash Carrier

James Buchanan Eads

Improved Compound Steam Engine

Improved Iron Planer

Agricultural Inventions - April 23, 1887

Miscellaneous Inventions - April 23, 1887

Engineering Inventions - April 23, 1887

To Inventors - April 23, 1887


  • Letters

    Correspondence - April 23, 1887

  • Recommended

    New Books and Publications - April 23, 1887

  • Departments

    Notes and Queries - April 23, 1887

  • Business and Personal - April 23, 1887

  • Index of Inventions - April 23, 1887

  • Patents

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