Stop for a slidable window

A window stop for limiting movement of a sliding window along a predetermined path of window movement, the window stop comprising:

• a housing having a cavity, the housing adapted to be positioned in a support member supporting the sliding window, an upper portion of the housing having an interior surface;
• a bolt operatively associated with the cavity and moveable between a first position wherein the bolt is generally within the housing, and a second position wherein a portion of the bolt extends beyond the housing into the path of the window movement, an upper portion of the bolt having a recessed ledge;
• means for securing the bolt in its first position wherein the securing means applies a force to the bolt while the interior surface engages the ledge, the force applied in a direction generally transverse to a longitudinal axis of the housing;
• and, a first means for biasing the bolt towards its second position wherein a portion of the bolt receives forces from the window contacting the bolt in its second position, wherein the bolt and housing have engaging surfaces, the engaging surfaces comprising a tongue and a cooperating groove arrangement wherein the tongue is positioned on either the bolt or the housing and the cooperating groove is positioned on either the housing or bolt to absorb and transfer forces between the window, bolt, and housing.