Scientific American Magazine
Volume 56, Issue 17You are currently logged out. Please sign in to download the issue PDF.
Features
Eight Light Dynamo
Sea Lions in Central Park
New, Process for the Protection of Iron
Daniel Davis
The Celestial World
The Conjunction of Saturn and Delta Geminorum
The Designs for U. S. War Vessels
Improved Wagon Rack
Improved Stove
Improved Pen Holder Tip
Combined Tablet, Paper Weight, and Blotter
Improved Pan Lifter
Decisions Relating to Patents - April 23, 1887
Improved Cash Carrier
Connection Hanger for Electrotyping Apparatus
Lewis Tent Pole and Ventilator
Safety Set Screw for Collars and Pulleys
Double Air Chamber Furring Tile
James Buchanan Eads
Improved Iron Planer
Improved Compound Steam Engine
Engineering Inventions - April 23, 1887
Miscellaneous Inventions - April 23, 1887
Agricultural Inventions - April 23, 1887
To Inventors - April 23, 1887
Departments
Correspondence - April 23, 1887
New Books and Publications - April 23, 1887
Business and Personal - April 23, 1887
Notes and Queries - April 23, 1887
Index of Inventions - April 23, 1887
Patents
