Abstract: A lock mechanism for a tilting-type double hung window which is automatically brought into engagement when the window sash is in the closed position and disengagement when the window sash is opened. The locking mechanism prevents pivoting of the window sash when the window sash is in the closed position.

Abstract: A pivoting and sliding closure assembly is provided which rides in a guide channel of a frame upon a pivot shoe assembly which at one end securely pivots a closure member upon one pivot shoe when the closure is pivoted away from the channel, and which latches the closure member in a slidable position when the closure member is pivoted to its latched position. The pivot shoes are connected together in the assembly and unique cam structures and rollers are incorporated in the assembly.

Abstract: A pet portal device for use with a sliding door or the like mounted in a frame and which is movable therein to define an opening between the closure end of the door and the frame. The device includes a panel member constructed to fit in the opening between the closure end of the door and the adjacent frame portion to close the opening. The panel member is provided with an assembly for enabling a pet to pass through the panel member. The panel member is movably connected to the door, such that theh panel member is selectively movable between a first position wherein it is in substantially coplanar relation with the door to close the opening and a second position wherein the panel member is supported out of coplanar relation with the door to enable the door to be closed in a conventional manner.

Abstract: An improved vertically slidable pivotal window unit having a spring loaded jamb latch assembly which provides a mechanically positive latching and release mechanism in going from the vertically displaceable to horizontally pivotal sash opening and closing modes.