Features
Concerning Telescopes
Progress of Pneumatic Postal Tubes
Improved Door Opener
Apparatus for Testing Sealed Cans
Improved Seal Lock
Car Coupling
Safety Gas Burner
A Steam Wheel, or Rotary Engine
Combined Grain Drier and Cooler
The Sinking of Shafts by Freezing
Automatic Loose Pulley Oiler
Cover for Cooking Utensils
Imitation of Electro-Physiological Apparatus and Electric Tuning-Forks by Hydrodynamic Tuning-Forks
The Improved Hand Loom Eugenie
The Improved Hand Loom Penelope
The Rudder of the Alaska
The Victoria Regia
Agricultural Inventions - April 4, 1885
Special - April 4, 1885
Engineering Inventions - April 4, 1885
Miscellaneous Inventions - April 4, 1885
Foreign Patents - April 4, 1885
Departments
- Letters
Correspondence - April 4, 1885
- Departments
Business and Personal - April 4, 1885
Index of Inventions - April 4, 1885
Notes and Queries - April 4, 1885
Patents
