Description Aylvapoldermolen, Burgwerd
the aylvapoldermolen dutch describe achtkante grondzeiler . smock mill without stage, sails reaching ground. brick base 1 storey high three-storey smock on top. both smock , cap thatched. 4 patent sails, have span of 22.00 metres (72 ft 2 in) carried on cast-iron windshaft. windshaft carries brake wheel has 57 cogs. drives wallower (32 cogs) @ top of upright shaft. @ lower end of upright shaft crown wheel (53 cogs) drives steel archimedes screw via gear wheel 48 cogs. axle of archimedes screw 660 millimetres (2 ft 2 in) diameter , archimedes screw 1.70 metres (5 ft 7 in) diameter. inclined @ 22½°. each revolution of archimedes screw lifts 1,560 litres (340 imp gal) of water.
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