Abstract: A window frame comprising a plurality of elongate frame members defining a frame opening for receiving a window for closing the frame opening. At least one of the elongate frame members having a longitudinally extending recess; and a slide mechanism received within the recess, wherein the slide mechanism comprises a first track fixed within the recess and a second track movable within and along the recess and coupled to the first track via a rotary coupling member such that movement of second track along the recess causes the rotary coupling member to rotate, wherein the second track is arranged to be coupled to the window when the window is received within the frame opening to enable the window to slide relative to the frame.

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: 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.