Abstract: Extruded or molded plastic covers snap fit into the jamb liner slots over the lower jamb liners. Replaceable brush weatherstrips on the edge contact the lower window sash. Upper foam pads engage the upper window sash and press the upper sash against the window frame. The smooth outer face of the covers may be painted. A T-shaped back rail inserts in a back jamb liner slot.

Abstract: Extruded or molded plastic covers snap fit into the jamb liner slots over the lower jamb liners. Replaceable brush weatherstrips on the edge contact the lower window sash. Upper foam pads engage the upper window sash and press the upper sash against the window frame. The smooth outer face of the covers may be painted. A T-shaped back rail inserts in a back jamb liner slot.

Abstract: Horizontal motorized drive rods in an upright rectangular frame control the movement of vertical guide rods in the X direction of the frame. Motorized guide rods move a router on a movable mount along the Y direction. A plungeable router, spring-mounted on the guide rods, is moved adjustably into the plane in the Z direction. The router removes glazing from a window sash and cuts deeper into the rabbit joint of the sash to allow double pane glass to be inserted into the sash. A rotary saw, with blade depth adjustment is swivel mounted to another vertical guide for cutting a slot in both vertical and horizontal rabbit joints to receive glazing beads. Pins rigidly mounted in front of and behind the cutting edges of the rotary saw blade act as guides and stops for the saw. Horizontal threaded rods with opposing right and left threads on either side of the center of the horizontal rod forms a centering device.

Abstract: A cutting tool guide device fits within a window frame in a vertically mounted position. The device guides a cutting tool, such as a router, along the X,Y, and Z coordinates. Simultaneous movement along the X and Y coordinates parallel to the window is possible by means of vertical and horizontal controls which allows any angle or curves to be followed. Measured adjustment along the Z coordinate, perpendicular to the window, is provided by a screw threaded router tool casing mounted in a collar with external measured detentes contacted by a spring loaded ball. Rotary movement of the router is restrained by a slot in the router receiving a-pin. Great precision is obtained in removing glazing from a window sash and in cutting into the rabbit joint of the sash. The cutting allows double pane glass to be inserted into the sash. The cutting tool guide device is adjustable to fit into various sized window frames.