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The World's Columbian Exposition--The Babcock & Wilcox Boiler Plant

New Inventions for Street Cleaning Wanted in New York City

The New Congressional Library Building

Notes From the Worlds Columbian Exposition Chicago 1893

A New Bicycle Gear

Duplex Lathe for Cranks

A Novel Support for Velocipede Saddles

A Combined Pitchfork and Band Cutter

The “Duplex” Slide Rule

Recording Time of Employees

A Gas Lighter or Extinguisher

A Photographic Flash Light Apparatus

Coal Conveyer at Weehawken, N. J

Brooding Snakes

The Race of Stilt Walkers at Bordeaux

To Inventors


  • Departments


  • New Books and Publications

  • Recently Patented Inventions

  • Business and Personal

  • Index of Inventions

  • Notes and Queries

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August 12, 1893

20% Sitewide for President's Day