Abstract: A corner fastener (10) is used for securing a first frame member (11) to a second frame member (12). The corner fastener (10) includes a body sized to be inserted in a cavity (11c)of the first frame member (11). Locking tabs (22 and 32) have first ends (22a and 32a) operatively connected to the body and second ends (22b and 32b) free to move between an unengaged position and an engaged position. The locking means have detent engaging members (24 and 34). The body has a fastening member aperture (27a and 37a). The aperture is in general axial alignment with an opening (12k), wherein when the body is positioned in the cavity and when a fastening member (50) is inserted in the opening and the aperture, the detent engaging member is locked in a detent by the fastening member, thereby fastening the first and second frame members together.

Abstract: An improved method and apparatus for latching and securing closure members within a frame are disclosed. A switching latch operatively secured to a first closure member engages a keeper secured to a second closure member and is rotationally operable to secure the closure members within the frame by simultaneously imparting translational forces to closure members through the keeper along two mutually orthogonal axes.

Abstract: An improved apparatus and method of sliding window construction are disclosed. When moving in an open position, a sash member is guided for movement in a first plane generally parallel to the window frame opening. When moving toward closure, the sash is guided by rotatable glide members that simultaneously transversely move all four corners of the sash into closure under cam action of the glides, to uniformly compress a weatherstrip seal around the entire perimeter of the sash. The transverse movement between open and closed positions can be performed in a manner such that the general plane of the sash remains parallel to the first plane throughout the transverse movement phase. Means are provided for retainably maintaining the sash at discrete positions along the transverse path of the sash during closure.

Abstract: An improved detachable nailing flange construction for window and door frames is disclosed. The flange configuration allows the flange to be rotated between collapsed and operative extended positions, while retainably attached to the frame. When collapsed, the flange is protected by the frame for shipment and handling. Means are provided for locking the flange into its extended position and for providing a weathertight seal with the frame. The direction of attachment to the frame can be reversed for selectively adjusting the lateral position at which the flange projects from the frame so as to vary the set-back of the frame relative to the wall in which it is to be installed.