Skip to main content


The Good of Theories

The East Tennessee and Georgia Railroad

Bushnell's Improved Metal Drill

Hudson River Railroad

Block from the old Frigate Hussar

The Exhibition of the Franklin Institute

Stove Polish

The Fair of the American Institute

Porter's Tuyere Iron

Poetry and the Fire Annihilator

Healey's National Picture

Culture of the Olive

Copper in Wisconsin


Cedars and Pines of California

Scorpions in Egypt

Liebig on Electro Magnetism as a Motive Power

Millholland's Coal Burning Locomotive

American Telescopes

Improvement in Pianofortes

Improvement in Taps for Cutting Screws

Improvement in Carriage Springs

Improved Seed Planter

Improved Machine for Drying Clothes

Improved Lamp

Smoke Condensing Grate

A Word to Apprentices

The Fire Annihilator--An Old American Invention

United States Steamships

Fringe Twisting Machine

More Improvements Wanted

Patent Office Report for 1850--No. 5

Patent Office Building

The Eatonton Railroad

List of Patent Claims

Petition for Extension of a Patent


Postage on Books

Back Numbers and Volumes

Binding Volume 6

New Edition of the Patent Laws

Patent Claims

New Prospectus to Mechanics

Inventors and Manufacturers

Cure of Rattlesnake Bites

Immensity of Space

Power of Condensation Possessed by Charcoal

Size for Draughtsmen

Varnish for Oil Paintings

A Disinfecting Agent


  • From the Editor

    To Correspondents

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
October 18, 1851

20% Sitewide for President's Day