A small set of sails having typically from 6 to 8 wooden boarded BLADES, set at right angles to the main windmill SAILS, and connected to the winding gear to allow the mill to move automatically into the wind. Located to the rear of the POST MILL or the CAP of a TOWER or SMOCK MILL. The "Fan" is connected by SHAFTS & GEARS to the rack on the curb or to TRAM WHEELS as appropriate, to keep the sails facing the EYE OF THE WIND. There many variants of design. Patented by Edmund Lee in 1745. Also known as FLY TACKLE. See FAN, FLY, FAN SPARS etc. See WINDING GEAR.