Volume 6, Issue 9
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Features
The Central Ohio Railroad
Lebanon Valley Railroad
Losing the Trade
Improved Hand Copying Press
Dayton and Springfield, Ohio Railroad
The Virginia Central Railroad
Hudson River Railroad
New Steamship
American Labor and Machinery and Foreign Labor, &C
The Late Fair of the American Institute
Booth's Patent for the Reduction of Gold
Emigration
New Jersey Elections and Railroad Monopoly
The Voltaic Battery—Precipitation of Metals
Family of Patrick Henry
Safety Gun Hammer
Boiler Water Gauge
Maryland Institute of Mechanic Arts
Stewart's Rotary Engine
Improved Mode of Fastening Scythes in the Snaths
To Keep the Dust out of Railroad Cars
A Patentable Subject
Improved Brick Making Machine
New Printing Machine
Post's Patent Stirrup Iron
Sulphur and Sulphuric Acid
McCallum's Improved Railroad Bridge
Interesting Experiment
Commissioner of Patents' Report
The Britannia Tubular Bridge
West India Mail Company
Patents Granted—Secret Use
Coating Iron with Copper
The Iron Trade of England before the Discovery of Coal
Telegraph Patent—Morse's, Bain's, and House's Claims
List of Patent Claims
Patent Claims
Mechanics
Inventors and Manufactures