Stories by Frank C. Perkins

A Portable Gasoline Drag Saw

Novel Auto Reel

Guide Carriage for Laying Large Sewage Concrete Pipes in Tunnels

Inventions New and Interesting- August 4, 1917

A Department Devoted to Pioneer Work inthe Arts

A Vacuum Cleaner for use on Streets

A Novel Steam Superheater

Trenching by Machinery

Power Devices that Facilitate the Work of the Contractor

Shop Measuring Machines

How did it Happen?, Manufacture of Bar-Ie-Duc Jelly

A Novel Hoist Recorder for Mines and Elevators, Designed to Answer this Question

Plowing Drainage Ditches

A Monster Implement Successfully Operated in the Middle West

An Electrically Operated Marble Quarry

Many Different Machines at Widely Scattered Points Demonstrate the Advantages of this Kind of Power

Inventions New and Interesting - September 11, 1915

Simple Patent Law; Patent Office News; Notes on Trademarks

Giant German and Austrian Cranes

Required in Navy Yards for Placing Turrets, Guns and Machinery

Super-high Velocity Cartridges and Three-barrel Guns

Some American and European Types of Electric Cold Saws

Recent Designs Illustrated

The Development of Electrically Operated Tools

Plate-bending Rolls and Hole-cutting Machines Designed at South Bethlehem

A One-Thousand-Ton Press for Forming Large Metal Shapes

European Induced Draft Installations

Constancy and Ready Control the Advantages Over Natural Draft

A Canadian Suspension Bridge, The Reddening of Leaves

A Gasoline Motor Plow, A Three-Axle Water Ballast Motor Roller and more