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The First American Type Writer

Ant-Eater and Penguin

The United States Joins the Industrial Union

The Keystone Automatic Car Coupler

Improved Condenser for Wool, Cotton, Cotton Waste, Etc.

Improved Cutter Bar for Mowers and Reapers

Combined Latch and Lock

Improved Butter Jar

Improved Stove Pipe Collar

Device for Securing Envelopes, Etc.

Combined Cigarette and Match Box

Improved Firearm

Improved Peach Stoner

Improved Ore Crusher and Amalgamator

Eight Light Dynamo

By George M. Hopkins

Exercises in Prestidigitation

The Polar Bear and Seals

Conduit for Underground Conductors

Apparatus for Determining the Specific Gravity of Liquids

By T. O'Conor Sloane

Elevated Cable Road with Suspended Car

Miscellaneous Inventions - April 30, 1887

Engineering Inventions - April 30, 1887

To Inventors - April 30, 1887


  • Letters

    Correspondence - April 30, 1887

  • Recommended

    New Books and Publications - April 30, 1887

  • Departments

    Business and Personal - April 30, 1887

  • Notes and Queries - April 30, 1887

  • Index of Inventions - April 30, 1887

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