Closure construction having adjustable catch assembly

摘要

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. A selected one of the recesses in or the projection on the cam keeper is engageable with the rib or ribs on or selected one of the grooves in the meeting stile.