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Features

Chain Making Machine

Leather Belting

Scientific Executions

The Latest Arctic Explorations--The Remarkable Escape of the Polaris Party

Scientific and Practical Information

American Exhibits at the Vienna Exposition

Water Main Tapping Machine

Miner's Drill Bar and Bits

Improved Cutting Nippers

Improved Plow Handle

A Collapsing Life Boat

A New Deep Sea Thermometer

Chandler's Patent Dip Pipe

The Wonders of the Egg.--IV

Sanitary Notes--Drainage for Health

Astronomical Notes

Improved Rotary Steam Engine

Feed and Filter for Steam Boilers

Country Cottage and Stable

Patent Office Decisions

Recent American and Foreign Patents

Answers to Correspondents

Copyrights

Communications Received

Departments

  • Departments

    Correspondence

  • New Books and Publications

  • Business and Personal

  • Notes and Queries

  • Index of Inventions

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June 07, 1873