Abstract: An adjustable catch assembly or window lock used with closures such as window sashes having meeting stiles has a cam or rotary crescent rotatably mounted on one of the meeting stiles and a cam keeper secured to the other meeting stile. The cam is rotated into engagement with the cam keeper to retain the closures in closed position. The cam keeper has means for adjusting and fixing the relative distance between a hook or keeper detent of the cam keeper and the stile to which the cam keeper is secured in order to compensate for disengagement or misalignment of the keeper detent or hook from a cam surface of the cam secured to the other meeting stile. The fixing means comprises either of a plurality of equally spaced-apart recesses formed transversely in or an elongated projection formed transversely on the cam keeper, and either of a rib or ribs formed longitudinally on or a plurality of equally spaced-apart grooves formed longitudinally in the keeper-carrying meeting stile.

Abstract: A pair of frame members have ends beveled at an angle of 45.degree. and mated with one another to provide a miter joint. The frame members have perpendicularly arranged plates each having an opening adjacent its one end to provide a separate end portion. A corner angle is mounted on the plates and has a pair of legs each having a projection of a V-shaped cross-section received in one of the openings. The V-shaped projections jointly provide a pair of substantially parallel members for clamping the separate end portions, the parallel members being fastened together by a screw passing therethrough. As the screw is tightened, the clamping members are moved closer to fasten the separate end portions securely together and to press the angle legs against the plates of the frame members.