Screw Propellor Patent Model. This is the patent model of John MacHaffie's screw propeller, which he called "the citropeller adopted to aquatic propulsion."John MacHaffie, a British citizen living in Schenectady, New York, received a patent in 1892 for a new propeller shaft arrangement, wherein the speed and

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Size: 1940px × 1289px
Photo credit: © SBS Eclectic Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: industry, maritime, work