GB210926A - Improvements in windmills - Google Patents

Abstract

210,926. Richard, R. R. Dec. 11, 1922. Current motors ; balancing moving parts ; driving and transmission mechanism ; regulating.-The rotor of a windmill comprises vanes 1, Fig. 2, curved in a horizontal direction to the form of a parabola, and supported between metal rings 2, 52, the rings 2 being carried by radial members 4, 5 secured to a conical or other shaped float 33 of sheet metal. The float rotates in a similarly shaped cistern 42 of sheet metal containing oil or water or both, the centre of flotation being arranged above the centre of gravity of the float. The buoyancy of the water in the cistern may be increased by the addition of certain salts, and the surface of the water may be covered with oil to retard evaporation. The sides of the cistern are carried by a flanged casting 46, Fig. 4, which is secured to a support 40 and carries a bearing 38 to support the rotor should the level of the liquid fall. The float has bearing 15, 16, carried by a tube 14 and spaced by rods 18, and rotating about a hollow shaft 17 fixed to the casting 46. The tube 14 may be filled with lubricant which may be replenished from a tank. A central shaft 21 to which a boss 20 carrying the members 4, 5, is fixed, transmits power to a pump rod 26, Fig. 1 through a crank 23, link 24, and a balanced ]ever 25, the connection between these parts being formed of ball and other joints working in oil cups. Power is also taken from a crank 71 on the rotor and transmitted through a link 28, bell-crank 29, on a tower 30, and rod 31 to a . pump, these parts being also connected by special joints in oil-cups. A shield 54 outside and a similar shield inside the rotor are carried on an arm 56 rotating on rollers 58 and carrying a wind vane 157. Inclined plates 3 between the vanes are engaged by the wind to diminish the downward thrust of the rotor. Vanes 32 on the float impart rotation to. the liquid which, under centritugal force assumes a lower level adjacent the floa,t, allowing the latter to sink at a predetermined speed so that a rail 6 on the rotor coacts with brake-blocks 7, which may be actuated by a hand lever 11 working in a rack 13. Alternatively, centrifugal force may cause members 61 to swing outwards into contact with the liquid to impede rotation. A cover 41 excludes rain &c. from the cistern.