Scientific American Magazine
Volume 62, Issue 14You are currently logged out. Please sign in to download the issue PDF.
Features
Electro-Pneumatic Block Signal System
Soda Ash
An Improved Alarm Lock
The Victor Safety Bicycle
An Improved Means of Channel Protection
Low Water Alarm and Flue Cleaning Device for Steam Boilers
An Improved Atomizer
An Improved End Gate for Wagons
A Nut and Washer for Vehicle Axles
A Portable Lemonade Holder and Glass Washer
An Improved Key Fastener
Mountains of the Moon
An Improved Bridge Flooring
An Improved Camera
Automatic Recording Signal for Railroads
Queen's New Triple Plate Toepler-Holtz Machine
To Inventors- April 5, 1890
Departments
Correspondence- April 5, 1890
Notes & Queries- April 5, 1890
New Books and Publications- April 5, 1890
Business and Personal- April 5, 1890
Recently Patented Inventions- April 5, 1890
Index of Inventions- April 5, 1890
