Model of a Rudder and Screw; Model of a rudder with round rudder king and screw on a stern with part of the keel. The rudder blade serves as a screw frame for the regular two-blade propeller; which thereby rotates with the rudder. The propeller shaft has a universal joint between the stern and rudder; so that the movement of the propeller shaft can be transferred to the propeller regardless of the position of the rudder. The propeller shaft can be driven with a crank.; A. Sol (possibly); Flushing; 1850 - 1858; wood (plant material); brass (alloy); iron (metal); h 40.8 cm x w 46.7 cm x d 6 cm