Lockable latch for tiltable double hung windows

摘要

A lockable window latch for double hung windows which pivots for cleaning includes an outer shell, a latching member which is slidable therein and a locking member which is rotatably received in the latching member and projects through an opening in the front wall of the shell. The locking element has an elongated control portion or handle which, when aligned transverse to the length of the latch permits latching and unlatching. When the handle is turned 90 DEG so as to be aligned with the length of the latch, one of its ends abuts against an internal wall surface of the shell thereby preventing unlatching.