Model of a Propeller, Model of a four-blade propeller that can be changed to a two-blade propeller. The hub has a coupling piece with a cam on the front, which indicates that the propeller could be disconnected without pushing the propeller shaft into the ship. The front propeller is loose on a thread on the hub with just enough play to turn ninety degrees, the rear screw is fixed by a pin through the hub. The pitch is 13.1 cm. Scale 1:20 (estimate)., anonymous, France, c. 1855 - c. 1860, brass (alloy), h 5 cm × w 20.5 cm × d 7.6 cm
Keywords:
Model, Propeller, four-blade propeller, changed, two-blade propeller, hub, coupling piece, cam, front, indicates, propeller, disconnected, pushing, propeller shaft, ship, front propeller, loose, thread, enough play, turn ninety degrees, rear screw, fixed, pin, pitch, 13 1 cm, Scale 1, 20, estimate, France, c, 1855, 1860, brass, alloy
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