Improvements in pivot adjustments for window and other hinged structures

摘要

262,000. Williams, J. S. May 31, 1926. Pivoting-adjustments.-In a pivotal mounting for windows and like swinging structures of the kind comprising a stationary quadrant plate on which is pivotally mounted a quadrant secured to the window, a spring-pressed pawl on the movable quadrant engaging with the notched edge of the fixed quadrant, the pawl is pivotally mounted and forms part of a lever by which opening and closing of the window is effected. As shown, to the window W mounted about side vertical pivots is secured the movable quadrant 2 that is hinged at 3 to the fixed quadrant 1 secured to the window frame F. The plate 2 carries a pivoted pawl 10 that is normally pressed by a spring 14 into engagement with one of notches 11a formed in the edge of the plate 1. The pawl has an, extension 15a, and a pair of lugs 15 are formed, on the rail 7 of the movable plate 2. By moving the member 15a towards the lugs 15 by pressure exerted by a finger and thumb of the operator, the pawl is freed from the notched quadrant and the window may then be moved with the lugs still pressed together into an adjusted position. The pivot of the pawl extents through a hole in the swinging plate and the hole houses the spring 14. A stop 11a on the movable member engages a stop 16 on the plate 1 to limit the opening movement of the window. The arrangement is also described for use on windows mounted on side pivots.