Features
The Ammonia Motor
An Improved Freight Car Door
Improved Safety Devices for Elevators
An Improved Piano Action
Towing Canal Boats by Electricity
A Method of Tunneling
Vertical Cylinder Boring Machine
Improved Siphon Condenser
The World's Fair Franklin Statue
An Improved Weed Puller
An Improves Dumping Car
A Bow for Stringed Musical Instruments
To Inventors- January 23, 1892
Patents- January 23, 1892
Departments
- Letters
Correspondence- January 23, 1892
- Recommended
New Books and Publications- January 23, 1892
- Departments
Business and Personal- January 23, 1892
Notes and Queries- January 23, 1892
Recently Patented Inventions- January 23, 1892
Index of Inventions- January 23, 1892
