Abstract: An operator for an awning type window having a sash pivotable about its top side relative to a window frame, with the operator controlling opening and closing movement of the sash relative to the frame. The operator includes a drive gear secured to a base on the frame, a sun gear pivotable about the axis on the base and drivably engaging the drive gear, a primary arm with a planetary gear rotationally attached thereon and drivably engaging the sun gear, a secondary arm pivotally mounted about a second axis on the base, and a pair of drive links pivotally interconnected between the planetary gear and the secondary arm.

Abstract: An operator for a French casement window having an operating arm with a roller mounted at its end and pivotable to move in an arc between extended and retracted positions, and a channel member horizontally mountable on the inner side of one sash and confining the roller as the operating arm is moved between its extended and retracted positions to move one between open and closed positions, respectively. A bracket is on the inner side of the other sash adjacent its outer vertical side, and a drag link is pivotally connected on one end to the bracket and on the other end to the operating arm to move the other sash between open and closed positions synchronously with the first sash when the operating arm is moved between its extended and retracted positions, respectively.