Skip to main content


Improved Water Wheel

An English Lard Factory

The Explosion at Erith

Polytechnic Association of the American Institute

Farmers' Club

Fruitless Invention

Birds in Central Park

Galvanizing Iron-a Prize to the Inventor

Definitions of Gears

Explosions--Our Cities in Danger

The Market for the Month

Trial of the 1,000-Pound Cannon

Revolving Turrets or Broadside Ships?

Man Traps and Spring Guns

The Great Mechanical Problems of the Day

Patent Claims

Issued From the United States Patent-Office for the Week Ending October 25, 1864

Recent American Patents


  • Departments


  • Notes and Queries

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
Scroll To Top