Abstract: A position control mechanism for a double/single-hung window, including retractable plungers mountable on opposite sides of a window sash and received in a track on the frame to support the window sash for movement. An elongated member is secured at opposite ends to the plungers. A tilt latch actuator is mountable to the window sash between the plungers for pivoting about an axis, and includes a shaft with an opening therein oriented substantially radially relative to the axis and receiving the elongated member when secured to the first window sash. The ends of the shaft opening are substantially equal radial distances from the axis, and the elongated member is substantially linearly oriented when secured to the plungers with the plungers received in the one track. Guide openings defined by a bushing concentric with the axis are spaced from the shaft at substantially equal distances on opposite radial sides of the axis.

Abstract: A locking assembly for a double-hung window assembly having a pair of vertical jamb liners, including a shoe slidable in a channel in one liner and operably connected to a sash for sliding movement therewith. A first locking member is rotatably connected to the first shoe, and manually operable means is pivotably connected to the shoe and operatively engageable with the first locking member for effectuating pivoting movement of the first locking member between (a) a limiting position wherein the first locking member engages one side wall of the one slide channel and (b) a releasing position wherein the first locking member is disengaged from the side wall of the slide channel. The first locking member including at least one tooth which engages and grips the side wall of the slide channel with the first locking member in the limiting position. A detent releasably maintains the first locking member in at least one of the limiting position and the releasing position.