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Features

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

Vegetable Coloring Matter

Cutlery--United States Industry

Cast-Iron Working in Scotland

A New Jersey Fish Farm

Fell's Railway over Mont Cenis

Herring's Center Vent Water Wheel

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Editorial Summary

Extension Notices

New Publications

Answers to Correspondents

Betting Against the Weather

The Progress of Mechanical Invention

Savery's Improved Expanding Pulley

Supply of Cold Air to Furnaces Employed for Warming Buildings

The Hoosac Tunnel--Drilling by Machinery

Reform in the British Patent System

Balancing of Machinery--The Centrifugal Hydro-Extractor

Mind Your Business

Patents and Claims

Departments

  • Departments

    Business and Personal

  • Correspondence

  • Patents

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