Scientific American Magazine
Volume 62, Issue 4You are currently logged out. Please sign in to download the issue PDF.
Features
Safety in Electric Lighting
Photographic Notes- January 25, 1890
An Improved Corn Trimmer
An Improved Compound Engine
A Brake and Starter for Vehicles
An Improved Pruning Implement
An Improved Bicycle Brake Shoe
The Feather Blade Elliptic Propeller
An Improved Fountain Pen
An Improved Door Lock
An Improved Band Saw Pulley
An Improved Rail Joint
The New York Post Office
New Letter Stamping Machine
Labors of the International Bureau of Weights and Measures
A Novelty in Tramway Practice
Decisions Relating to Patent Cases
The French War Ship "Redoutable"
Departments
Recently Patented Inventions- January 25, 1890
Business and Personal- January 25, 1890
Notes and Queries- January 25, 1890
To Inventors- January 25, 1890
Index of Inventions- January 25, 1890
