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Railroad Crossings

Usher's Rotary Steam Plow

A Convention of Railroad Directors

Overman's Metallurgy

Self-Raising Flour

The New Found Lake

Trial of Fire Engines

Wonderful Discovery

A Relic of a By-Gone Age

Mulching Potatoes

The River Amazon—A Great Project

A Runaway Lake

An Old Invention Revived

Correct Ideas about Compensating Pendulums

Paper Cutting Machine

Rapid Evaporation of Ice

Singular Petition to the Senate for an Appropriation

Surgical Adjuster

The Collin's Steamers

Tubular Ventilating Window Sash

Woodward's Patent Weeding Plow

Wortendyke's Patent Countertwist Wick

Cutting Hand Rails by Machinery

Improved Capstan

Improvement in Bridges

Machine for Cutting and Bending Tin

New Gold Washer

Railroad Safety

The Great American Lock in England

The Wheeling Bridge Case

Western Enterprize—Railroads

Who Reads an American Book

Woodworth's Machine in Philadelphia

Anthracite Coal for Naval Steamers

Fire-Proof Houses

Great Improvement in the Manufacture of Salt

List of Patent Claims

Rotation of Our Forest Trees

The Curculio

Interesting Patent Case

Patent Laws, and Guide to Inventors

Back Numbers and Volumes

On Boilers—No. 26


Iodine Rendered Soluble by Syrup of Orange Peel and Tanin


A Challenge to Rifle Makers


  • From the Editor

    To Correspondents

  • An Important Paragraph

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June 05, 1852

20% Sitewide for President's Day