Abstract: An anti-rotation clutch assembly for a manual roller shade regulates rotational retraction and deployment of a window shade. The clutch assembly provides a rotating wheel subassembly comprising a sprocket plate and an extending shaft that carries a window shade. The sprocket plate supports a cable that transmit rotational motion to shaft. The clutch assembly also includes a rotation biasing device comprising springs having tabs. The springs coil around a stem and fits into the shaft. The spring generates spring tension during rotational motion by shaft to create frictional resistance. The frictional resistance limits the rotational velocity of shaft. The tabs engage edges of the elongated openings in the shaft wall during rotational motion by shaft. This engagement restricts rotational motion by shaft, which limits maximum deployment and retraction of window shade. A fixed base anchors the rotating wheel subassembly to a mounting surface. A protective sleeve covers shaft and springs.