Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 372
Perfection nozzle. … e^P^ Fig. 14. -Hale vacuum nozzle. panded in slight corrugations, thus attachin means the end of the hose is protected from the water, thereby preventing mildew and rot.
Mechanical engineering
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