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Features

Improved Barrel Head-Cutter

Polytechnic Association of the American Institute

Our Special Correspondence

Another Fortunate Inventor

Compression of Steam in Cylinders

Belts for Driving Machinery

Coal Tar on Young Trees

Usefulness of Diamonds

American Clocks and Watches

To Inventors and Patentees - February 4, 1860

Gun Cotton

Removing Silver from Injured Plated Ware

Construction of Roofs

The Great Washington Aqueduct Bridge

Tricks of the Wine Trade

A Column of Varieties

A Wonderful Natural Phenomenon

Improved Planer

New Iron Hoops for Cotton Bales

Patent Extension Cases

The New Canadian Patent Law

Railroad Safety and Brakes

Fire-Bricks

Weekly Summary of Inventions - February 4, 1860

Welding at a Single Blow

Foreign News and Markets - February 4, 1860

New York Markets - February 4, 1860

Patent Claims - February 4, 1860

Hints to our Readers

Plain Directions for Making a Horizontal Sun-Dial

Improved Compensating Pendulum

Departments

  • Departments

    Notes and Queries - February 4, 1860

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