windows application_number US 65832803 A description referring to fig1 and 2 the curtain track adjustment assembly according to the invention includes a winch a fixedly located on one side of a window a crank 1 an upper cap 2 a brake paw 5 a spring 6 an axle 7 and a ratchet gear 9 the crank 1 is fastened to an annular flange 22 which is extended above the upper cap 2 and has one end attached to a handle bar 3 the upper cap 2 is fastened to a bulged rim 41 located in the center of a body 4 the annular flange 22 has a notch 221 on one side the upper cap 2 has an opening 21 on one side to receive the brake paw 5 the brake paw 5 has a stub 51 on one side to couple with the spring 6 the axle 7 has a bottom end coupling with a bearing 8 and a top end running through the ratchet gear 9 a steel cable 10 is wound on the axle 7 the steel cable 10 has one end fastened to a fastening member 131 of an anchor dock 13 and other end fixedly fastened to the axle 7 of the winch a the steel cable 10 threads through a plurality of clips 11 the clips 11 may clip curtain or shutter slats 12 the anchor dock 13 is mounted on another side of the window to connect to the steel cable 10 through the fastening member 131 by means of the aforesaid construction when in use for adjusting the distance turn the crank 1 of the winch a the spring 6 has a restoring force to anchor the brake paw.