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A New Submarine Boat

The Copyright Bill Fails To Pass

A Fiber from Cotton Stalks

An Improved Pipe Clamp

An Improved Adjustable Ladder

An Anvil Attachment

An Improved Ventilator for Railway Cars

An Improved Ledger Index

An Improved Curtain Pole Fixture

An Improved Clothes Line Adjuster

A Water Shield for Window Brushes

An Improved Wire Stretcher

The Accident to the Steamer City of Paris

An Improved Furnace Door Opener


An Improved Valve

A Gigantic Plant from Sumatra

A New Gun for Firing High Explosives

A New Target Pistol

To Inventors- May 17, 1890

Electrical Books

The Scientific American


  • Letters

    Correspondence- May 17, 1890

  • Departments

    Business and Personal- May 17, 1890

  • Recently Patented Inventions- May 17, 1890

  • Notes and Queries- May 17, 1890

  • Index of Inventions- May 17, 1890

  • Patents! May 17, 1890

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May 17, 1890