Window construction

Claim 1

A window construction comprising upper and lower sashes slidably mounted in a surrounding jamb, each sash comprising a pair of spaced side stiles and upper and lower stiles extending therebetween, said lower sasy being pivotally mounted for tilting movement to an open position, latch means mounted on the top surface of the upper stile of said lower sash, and bail-like retaining means mounted on the lower stile of said upper sash, means pivotally mounting said latch means for movement between a first inoperative position and a second position wherein said latch means interengage said retaining means to lock said sashes against vertical sliding movement, and means for limiting the tilting movement of said lower sash, said limiting means comprising a strap member having one end pivotally mounted on the top surface of the upper stile of said lower sash by the same aforesaid means that pivotally mount said latch means thereon, whereby said strap member may be selectively pivotally moved between an inoperative position wherein it extends longitudinally along said upper stile, to an operative position wherein it extends perpendicularly from said upper stile, said strap member being of flexible metallic construction and having a hook-like extremity adapted to releasably interengage with said bail-like retaining member when the strap is in its operative position to limit tilting movement of said lower sash, and means on said upper stile for limiting pivoting movement of said strap member to a position approximately perpendicular to said upper stile whereby to facilitate and expedite alignment of said strap member with said retaining means.