Improved Printing Press. Improved Rifle Barrel. Machinery for Scraping Ivory. Marine Signals. Tennoning Whee Spokes. Saw Mill Improvements. Attaching Hubs of Wheels to Axles. New Rotary Engine. Converting Rotary into Reciprocating Recti leniar Motion. Improvement In the Manufacture of Gas. Adamantine Sperm Candles. Mildew on Canvas. DODGE'S PRINTING PRESS., scientific american, 1852-06-19
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