Abstract: A latch has a slide bolt for sliding along a guideway in a sliding window vent in a window frame and has a handle unit interfitting with the slide bolt. This handle unit is formed with a leaf spring engaging the back wall of the guideway to urge the handle unit forwardly so that when the slide bolt registers with an aperture in the window frame, a portion of the handle unit fits into a stop recess at the mouth of the guideway.

Abstract: A key-operated door locking device includes a conventional rim lock adapted to be mounted to one side of the door and having a bolt projectable and withdrawable with respect to the door frame by means of a dog carried on the lock cylinder and rotatable by the insertion and rotation of the proper key. The locking device further includes a coupling between the cylinder dog and a rotatable member eccentrically mounting three pivotable rods extending completely across the door so as to be projectable and withdrawable from the three remaining sides of the door, the coupling being effective, upon the rotation of the cylinder dog by the proper key, not only to cause the bolt to be projected into or withdrawn from its respective recess, but also to cause the rotatable member to be rotated and thereby to project or withdraw the rods with respect to their respective recesses.