Window assembly

Claim 1

A window assembly for a building wall comprising a hollow frame including opposed sides, a sill and a header; a trackway mounted upon and secured to each frame side including opposed inner and outer channel tracks of dovetail shape in cross section; elongated opposed pairs of channel slides of dovetail shape in cross section movably mounted in opposed tracks respectively; a window support bracket overlying each slide and adjacent its lower end pivotally mounted thereon; a lower sash interposed between a pair of opposed support brackets and secured thereto; an upper sash interposed between an additional pair of opposed support brackets and secured thereto; the lower and upper sashes and connected channel slides adapted for vertical adjustments along the inner and outer tracks respectively; the lower and upper sashes and connected support brackets adapted for selective inward pivotal movement approximately 90° to facilitate cleaning; retractable latching means on said sashes engageable with the channel slides for securing the sashes within said tracks; the outer surface of each channel slide having an elongated V-shaped groove; the outer surface of each window support bracket having a corresponding V-shaped base normally nested and retained within the channel slide grooves respectively when said sashes are in an upright position, and are angularly displaced from said grooves when the sashes are pivoted inwardly; the pivotal mounting of each window support bracket including a bolt within a channel slide projecting inwardly thereof and through a window bracket; and a coiled compression spring anchored upon said bolt and bearing against the window bracket, normally biasing the bracket base into the slide groove; the slide camming said bracket inwardly on rotation thereof, against the action of said spring for biasing the window sash and bracket in any selected angular position of adjustment, said window brackets on return rotation adapted to snap into said slide grooves respectively; the securing of a sash between a pair of support brackets including opposed spaced inwardly directed channels on said brackets, the sides of each window sash being nested and retained within said channels respectively; and fasteners securing said brackets to said window sashes respectively; said latching means including a manually retractable bolt nested within an upper portion of each window sash and longitudinally projected into a corresponding recess in an adjacent channel slide; and a latch plate on said sash having a bayonet slot for guidably retaining said bolt in a locking position, and permitting rotation and retraction thereof to disconnect the bolt from the channel slide.