Features
The Grounding of the Neutral Wise in the Three-Wire System
Position of the Planets in April
An Improved Wool Drying Machine
Twelve-Wheeled Freight Locomotives
An Improved Elevated Railway
An Improved Feed Water Heater
Photographic Notes
An Automatic Pump Regulator
An Improved Cigar Measure
A Draw Shell Lime Kiln
Charles J. Van Depoele
To Inventors
Departments
- Letters
Correspondence- April 2, 1892
- Departments
Recently Patented Inventions- April 2, 1892
Index of Inventions- April 2, 1892
Notes and Queries- April 2, 1892
Business and Personal- April 2, 1892
