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Celebration of the Centennial of the Enactment of the Patent Laws

New Naval and Military Industries

War and Invention

War and Invention (Concludedfrom page 32.)

Automatic Fire Extinguisher

Damper for Stove Pipes, Chimneys, Etc.

Improved Coal or Rock Drill

Derailing and Replacing Attachment for Street Cars

Improved Cask or Tub

Plumber's Trap

Improved Vehicle Pole

Improvement in Eye Glasses

Covering for Traction Cables

Improved Bevel

Decision Relating to Patents - March 12, 1887

Improved Gate Latch

The College of the City of New York--The Technical Course

Sectional Steel Boat for Mr. Stanley

Convertible Anchor and Freight Hoisting Apparatus for Vessels

Mechanical Dyeing

Ernst Werner Siemens

The Epiornis

New Torpedo Boat. for the Spanish Government

Miscellaneous Inventions - March 12, 1887

Engineering Invention - March 12, 1887

Agricultural Inventions - March 12, 1887


  • From the Editor

    To Inventors - March 12, 1887

  • Letters

    Correspondence - March 12, 1887

  • Recommended

    New Books and Publications - March 12, 1887

  • Departments

    Business and Personal - March 12, 1887

  • Notes and Queries - March 12, 1887

  • Index of Inventions - March 12, 1887

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March 12, 1887

Of Shamrocks and Science

Happy St. Patrick’s Day