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Scientific American, Vol. 66, No. 15 (April 1892) (1892)

leaf 13

An illustration from Scientific American, Vol. 66, No. 15 (April 1892), 1892, leaf 13
No. 1, Heavy Hub Boring Machine. The NATIONAL. INDEPENDENT. UNIVERSAL. COMBINATION. Strongest. Easiest to change. Best Finish. Rever-sible JawH (patented) giving 6 changes includingevery possible desired position. New Catalogue, illustrated, sent free. Liberal dis-counts. Prompt shipment.… … NOISELESS ROTARY FANS. These fans can b e fasten-ed to ceiling, and driven bya round belt directly froma Backus Water Motor,Steam Engine, or otherpower. By changing angleof blades amount of aircan be regulated. Two ormore fans can be connect-ed on ceiling. The BackusPatent Fans are noiseless,and…

Lobsters · Patents · Glacier · Adapted · Munn · Scientific American · Illustrated · Ten years · Short time · Years ago · Arc light · Societe anonyme · Twelve hours · Rope traction · Supplemental base · Plate glass

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