Abstract: A construction kit for horizontally and vertically sliding window assemblies in which each window includes a sash. A meeting rail is connected to each sash and includes a slot at each of the inner and outer surfaces of the meeting rail. Weather stripping is fitted into the slot at outer surface of the meeting rail and is wrapped around the end of the meeting rail and secured within the slot at the inner surface of the meeting rail.

Abstract: A latch for use in window constructions, particularly vertically and horizontally sliding window constructions. The latch is generally mounted internally in a window sash frame so that its latch bolt protrudes from the sash to engage a guide slot in the main frame jamb or header of a window frame. The latch includes a thin rectangular base plate having upstanding bosses on its opposing ends which are pierced by vertical bores that pass through the base plate. The latch bolt is of substantially the same width as the base plate and slides over it. The bolt includes two openings spaced to receive the upstanding bosses on the base plate, each opening having a first lower region sized to slidably accommodate a boss and a second wider ovate upper region sized to slidably accommodate the head of a screw fastener. Two screw fasteners driven respectively through the vertical bores in the bosses on the ends of the base plate affix the latch to a window sash and secure the bolt to the base plate.

Abstract: A drainage system and method of draining extruded window sill frames is disclosed. The drainage system includes a drain cap which provides two separate drain paths for the sill. The drain cap is installed in a drainage orifice in the bottom edge of the outer sill face. The drain cap includes a ramp portion for directing water draining from the front of the sill through one of the drain paths, water from the rear of the sill being permitted to drain through the other drain path. The drain cap is installed using a method whereby a drainage path is formed through any longitudinal portions in the sill which are intermediate the drainage orifice in the bottom of the outer sill face and drain apertures in the sill surface. The drainage path is preferably formed using a horizontal drilling machine equipped with a drill bit having at least two drill diameters for piercing two concentric holes in a single pass. Alternatively, two or more bits are used for drilling two or more holes which are acentric but coextensive.