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Newark Bay Draw Bridge

The Protection of Shade Trees Against Insects

Present Condition of Shipping and Sailors

Improved Combination Lock

Improved Oar Lock

Improved Printer's Chase

Rounding Jack for Hat Brims

Improved Car Coupling

Combined Fertilizer Dropper and Hill Former for Tobacco Plants

Water Motor

Animal Poke

The Momentum of Liquids

By T. O'Conor Sloane and T. O'conor Sloans

Improved Steam Road Roller

Attraction Produced by Jets of Steam or Air

The Two Headed Cow

Autographs of the Electric Spark

By Geo. M. Hopkins

Engineering Inventions - May 28, 1887

Miscellaneous Inventions - May 28, 1887

To Inventors - May 28, 1887


  • Letters

    Correspondence - May 28, 1887

  • Recommended

    New Books and Publications - May 28, 1887

  • Departments

    Business and Personal - May 28, 1887

  • Notes and Queries - May 28, 1887

  • Index of Inventions - May 28, 1887

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