Self-locking window operator

A self-locking window operator for a window having a window sash pivoted to a window frame comprising, an arm having an end movably connected to the window sash, a keeper on the window frame, a lock member on said arm, means for imparting linear movement to the arm when the window is closed to effect engagement and disengagement between said keeper and lock member, and gear means on the window frame for imparting rotational movement to said arm to cause opening and closing movement of said window sash.

A self-locking window operator for a window having a window sash pivoted to a window frame comprising, a housing, an arm having opposite ends with one end in said housing and the other end movably connected to the window sash, a keeper on the window frame at a distance from said housing, a lock member on said arm at a distance from said housing, means in the housing for imparting linear movement to the arm when the window is closed to effect engagement and disengagement between said keeper and lock member, and means in the housing for imparting rotational movement to said arm to cause opening and closing movement of said window sash.

A window operator comprising, a housing adapted for mounting on a window frame, a first gear rotatably mounted in said housing, an arm connectable to a window sash and having a second gear in mesh with said first gear, a pivot pin fixed to said housing for mounting said arm, an elongate slot in said arm for receiving said pivot pin with said elongate slot extending generally parallel to the length of said arm, said arm having rotational movement with the pivot pin positioned at one end of the elongate slot and having linear movement by relative movement between the pivot pin and the elongate slot, a cam follower on said arm, a cam on said housing for coacting with said cam follower and having a pair of cam sections with one cam section maintaining said pivot pin positioned at one end of the elongate slot and the other cam section permitting linear movement of said arm along the pivot pin in one direction and guiding the arm for linear movement in an opposite direction, a keeper mountable on the frame, a lock member on said arm movable into and out of engagement with the keeper by linear movement of said arm in said one direction and said opposite direction, respectively, and said first gear operable at all time to exert a force on the second gear in a direction parallel to said other cam section.

A window operator comprising, a housing adapted for mounting on a window frame, a worm gear mounted in said housing for rotation about an axis extending lengthwise of said housing, an arm connectable to a window sash and having a sector gear in mesh with said worm gear, a pivot pin fixed to said housing for mounting said arm, an elongate slot in said arm for receiving said pivot pin with said elongate slot extending generally parallel to the length of said arm, said arm having rotational movement with the pivot pin positioned at one end of the elongate slot and having linear movement by relative movement between the pivot pin and the elongate slot, a cam follower on said arm, a cam on said housing for coacting with said cam follower and having a curved section with a center of curvature coincident with said pivot pin to maintain said pivot pin positioned at one end of the elongate slot and a straight section extending parallel to the axis of rotation of the worm gear which permits linear movement of said arm in one direction and guides the arm for linear movement in an opposite direction, a keeper mountable on the frame, and a lock member on said arm movable into and out of engagement with the keeper by linear movement of said arm in said one direction and said opposite direction, respectively.

A window operator comprising, a housing adapted for mounting on a window frame, a first gear rotatably mounted in said housing, an arm connectable to a window sash and having a second gear in mesh with said first gear, a pivot pin fixed to said housing for mounting said arm, an elongate slot in said arm for receiving said pivot pin with said elongate slot extending generally parallel to the length of said arm, said arm having rotational movement with the pivot pin positioned at one end of the elongate slot and having linear movement by relative movement between the pivot pin and the

A window operator for positioning a window sash relative to a window frame comprising, gear drive mechanism mountable on said window frame, an arm connected between said gear drive mechanism and said window sash and having rotational movement for moving the window sash and linear movement when the window sash is closed, said gear drive mechanism including a first gear, a second gear on said arm engaging said first gear, means mounting and guiding guding said arm whereby part of the motion imparted to the arm by the first gear is said rotational movement and another part of the motion is said linear movement and coacting locking means including a member on said arm and a member mountable on said window frame which are moved into locking relation by said linear movement of said arm.