Volume 7, Issue 2
You are currently logged out. Please sign in to download the issue PDF.
Features
Safety Valves in Steamboats
Turning Lathe Improvements
New Iron Bridge
The State Fair
Foreign Correspondence
Railroad Jubilee
Planing Machine
Rhode Island Fair—Paine's Light
The Lion's Tongue
Mode of Calculating River Velocity
Boston Science
Science and Arts, Improvements &C
A Great Salt Well
Great Swimmer
Great Exhibition—American Inventions
Air Spring for Cars
Improved Machine for Making Combs
New Vault Lights
Cast Iron Fronts of Houses
Improved Machinery for Cutting Shoemakers Jiggers, Spur rowels, &C
New Way of Fastening Scythes
Improved Rotary Blower
Improved Water Indicator
Improved Engine Lathe
Improvements in Expanding Mandrils
Improved Lamp for Burning Camphene
Utility of American Inventions
Reclaiming Rice Fields
Interesting Patent Case—Steam Pump
Patent Office Report for 1850—No. 2
Remarks on the Manufacture of Starch and British Gum
Parker's Wheels
List of Patent Claims
Haviland & Tuttle's Centre Vent Iron Wheels
More Gold
Tilton's Violin
Back Numbers and Volumes
New Edition of the Patent Laws
Patent Claims
Postage on Books
New Prospectus
Inventors and Manufacturers