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Features

Improvement in Steering Apparatus for Vessels, Improved Burglar-proof Safe, and more

Cutlery--United States Industry

Vegetable Coloring Matter

Cast-Iron Working in Scotland

A New Jersey Fish Farm

Fell's Railway over Mont Cenis

Herring's Center Vent Water Wheel

Editorial Summary

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

New Publications

Extension Notices

Betting Against the Weather

The Progress of Mechanical Invention

Savery's Improved Expanding Pulley

Balancing of Machinery--The Centrifugal Hydro-Extractor

The Hoosac Tunnel--Drilling by Machinery

Supply of Cold Air to Furnaces Employed for Warming Buildings

Reform in the British Patent System

Mind Your Business

Patents and Claims

Departments

  • Departments

    Business and Personal

  • Correspondence

  • Patents

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July 01, 1868

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