Scientific American Magazine
Volume 56, Issue 18You are currently logged out. Please sign in to download the issue PDF.
Features
The First American Type Writer
Ant-Eater and Penguin
The United States Joins the Industrial Union
The Keystone Automatic Car Coupler
Combined Latch and Lock
Improved Cutter Bar for Mowers and Reapers
Improved Condenser for Wool, Cotton, Cotton Waste, Etc.
Improved Stove Pipe Collar
Improved Firearm
Device for Securing Envelopes, Etc.
Combined Cigarette and Match Box
Improved Butter Jar
Improved Ore Crusher and Amalgamator
Improved Peach Stoner
Eight Light Dynamo
The Polar Bear and Seals
Exercises in Prestidigitation
Conduit for Underground Conductors
Elevated Cable Road with Suspended Car
Apparatus for Determining the Specific Gravity of Liquids
Miscellaneous Inventions - April 30, 1887
Engineering Inventions - April 30, 1887
To Inventors - April 30, 1887
Departments
Correspondence - April 30, 1887
Notes and Queries - April 30, 1887
New Books and Publications - April 30, 1887
Business and Personal - April 30, 1887
Index of Inventions - April 30, 1887
