INDEPENDENT AIR PUMP, DRIVEN BY GEAR WHEELS AND A ROCKING SHAFT. Messrs. John Fraser & Son. from the Article THE CENTRALISATION OF THE STEAM-CONDENSING PLANT. Hy Harry G. V. Oldham. from The Engineering Magazine Devoted to Industrial Progress Volume XX 1900 - 1901 The Engineering Magazine Co

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Location: USA
Photo credit: © Historic Illustrations / Alamy / Afripics
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