Features
Novel Torpedo Boat Designing and Maneuvering
An Improved Washing Machine
A Mechanical Movement
Barton's Improved Fence
An Improved Annealing Box
Gerstle's Hinged Handle for Pans, Etc
An Improved Magnetic Ore Separator
Eberhardt's Universal Automatic Gear Cutting Machine
The New U. S. Cruiser Baltimore
An Improved Globe Holder
Maria Mitchell
Improved Bar Channeling Stone Drill
A Nest-Building Frog
Departments
- Recommended
New Books and Publications- July 20, 1889
- Departments
Recently Patented Inventions- July 20, 1889
Index of Inventions- July 20, 1889
Business and Personal- July 20, 1889
To Inventors- July 20, 1889
Notes and Queries- July 20, 1889
