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Features

Improved Portable Stamp Mill, White Maple Sugar, and more

The Most Important American Discoveries and Inventions

Activity of the Machine-Shops

Special Notice

How to Lay up an Eight-Strand Gasket

Polytechnic Association of the American Institute

Ornamental Steam Engines

Welding Steel Cold

Another Step in Educational Reform

The Metropolitan Sanitary Fair

Are Iron-Clads Indispensable?

Facts Concerning the Goodyear Patents

The New Steam Revenue Cutters

The Cost of Coal

Swindling Mining Companies--Look Out for Them!

Recent American Patents

Patent Claims

Issued From The United States Patent-Office

Patents Granted for Seventeen Years!

Rates of Advertising

The Cheapest Mode of Introducing Inventions

Valuable Work for Inventors Patentees and Manufacturers

Improved Pantaloons Protector, Improved Knuckle-joint

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April 16, 1864

See the World from a Different Perspective

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