Stories by Frank C. Perkins

Apparatus for Testing Mine Gases, Novel Multiple Drill Head for Roller Bearings and more

Some Novel Electrical Devices

The Largest Reinforced Concrete Bridge in America

A Viaduct with a Clear Span of Over 300 Feet

English Multicycles for the Blind, A Chapel on a Motor Truck and more

An Automatic Sharpener on an Electric Meat Slicer, An Engine that will Run on Several Fuels and more

Aids to Navigation on the Missouri River

Concrete Piles Employed in Dam Construction

The Auto-Truck for Coal Delivery

From Railway Car to Consumer

An Automatic Gasoline Engine Cream Separator

A Machine for Sawing Granite

A Most Useful Adjunct in the New England Quarries

Makinǵ Ice with Heat

Refrigeration without Power for Home Use

A Concrete Bridǵe of Strikinǵ Desiǵn

A Pleasing Adaptation of Old Mission Architecture

The Inventor's Department- December 23, 1911

Simple Patent Law; Patent Office News; Inventions New and Interesting

Novel Portable Gasoline Motor-driven Air Compressor

Suitable for Inflating Pneumatic Tires

Automobile Novelties

New Things in America and Europe

A Gravity Service for Handlinǵ Bricks

A Remarkable Labor-Saving Device

Nocturnal Warfare

An Automobile-mounted Searchlight for the French Army

An Enǵlish Water Dynamometer for Absorbinǵ 1,000 Brake Horse-power

A Gasoline Tractor of 100 Horse-power Capacity

A Mechanical Horse for the Farm

Modern German Police Call and Fire Alarm Systems

Some Recent German Designs

A Spanish Mininǵ Concrete Pier

A Remarhable Cement Structure at Guadalquivir