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Improved Dumping Wagon, Improved Engine Piston

Science Familiarly Illustrated

The Exhibition of Iron and Steel

Editorial Summary

Maine and Her Public Works

May's Patent Key Guard

Steam Boilers--Their Form, Construction, and Material

Exposition Notes

Brown & Sharpe's Cutter for the Teeth of Gears

Recent American and Foreign Patents

Business and Manufacturing Items

Answers to Correspondents

Improved Stitching Clamp

Street Pavements

A Mechanical Paradox

Tin Lined Water Pipe

Patent Claims

Zur Beachtung für Deutsche Crfinder

Extension Notice


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June 15, 1867

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