Volume 18, Issue 15
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Features
Roesler's Improvement in Match Safes
Askwith's Improved Piston Packing
Ancient Locks and Keys
Heat and Cold
Sketches from the Paris Exhibition
Editorial Summary
The Wheel Question
Manufacturing, Mining, and Railroad Items
Recent American and Foreign Patents
New Publications
Answers to Correspondents
Gregory & Melotte's Patent Adjustable Clutch
Riordan's Clothes Line Holder
Wanzer's Harvester Pitman Connection
Aluminum Bronze--Its Properties and Uses
Utilization of Waste
Popularize Science
Wrought-Iron Fences--Setting Iron Fence Posts
On Forging, Hardening, and Tempering Mill Picks
Patents and Claims
Issued by the United States Patent Office