Features
Ant-Eater and Penguin
The United States Joins the Industrial Union
The Keystone Automatic Car Coupler
Improved Condenser for Wool, Cotton, Cotton Waste, Etc.
Improved Cutter Bar for Mowers and Reapers
Combined Latch and Lock
Improved Butter Jar
Improved Stove Pipe Collar
Device for Securing Envelopes, Etc.
Combined Cigarette and Match Box
Improved Firearm
Improved Peach Stoner
Improved Ore Crusher and Amalgamator
Eight Light Dynamo
Exercises in Prestidigitation
The Polar Bear and Seals
Conduit for Underground Conductors
Apparatus for Determining the Specific Gravity of Liquids
Elevated Cable Road with Suspended Car
Miscellaneous Inventions - April 30, 1887
Engineering Inventions - April 30, 1887
To Inventors - April 30, 1887
Departments
- Letters
Correspondence - April 30, 1887
- Recommended
New Books and Publications - April 30, 1887
- Departments
Business and Personal - April 30, 1887
Notes and Queries - April 30, 1887
Index of Inventions - April 30, 1887
