Scientific American Magazine
Volume 66, Issue 4You are currently logged out. Please sign in to download the issue PDF.
Features
Improvements Needed in the New Navy
The Ammonia Motor
An Improved Piano Action
Improved Safety Devices for Elevators
An Improved Freight Car Door
Towing Canal Boats by Electricity
A Method of Tunneling
Improved Siphon Condenser
Vertical Cylinder Boring Machine
The World's Fair Franklin Statue
A Bow for Stringed Musical Instruments
An Improves Dumping Car
An Improved Weed Puller
To Inventors- January 23, 1892
Patents- January 23, 1892
Departments
Correspondence- January 23, 1892
Recently Patented Inventions- January 23, 1892
Notes and Queries- January 23, 1892
New Books and Publications- January 23, 1892
Business and Personal- January 23, 1892
Index of Inventions- January 23, 1892
