Abstract: An emergency release latch for releasibly locking a protective closure, such as a window grill, in closed position over an opening in a building structure to prevent intruders from entering the structure through the opening and yet permit escape of persons from the structure through the opening in the event of a fire or other emergency. The latch is relativey immune to improper installation and tampering, releases automatically in response to a fire in the immediate vicinity of the escape opening and in response to breaking of the latch actuator, is reliable in operation over long periods of time without servicing, is easily releasible by young, handicapped, and elderly persons, and is secure against forced entry when engaged.

Abstract: A latch system for a hinged window grille that enables quick one point release near the adjacent interior floor. The system includes a latch or latches which are connected to a foot stirrup by means of cables, the stirrup being located close to the floor. Each latch includes spring loaded retention means which engage the head of a penetrator member connected to the grille to secure the side of the grille opposite the hinges.

Abstract: A fence kit for constructing a fence having upright posts, rails extending between the adjacent posts, and coupling means connecting the rail ends to the adjacent posts in a manner which permits assembly of the kit into a fence without welding or special tooling. The coupling means for each fence rail comprise collars slidable on the adjacent fence posts, means such as a socket on one collar for slidably receiving the adjacent rail end in its endwise direction, and a radially projecting lug on the other collar to be coaxially aligned with the adjacent rail end and a sleeve slidable on the lug and rail to and from a position wherein the sleeve bridges the lug and rail, whereby the fence may be constructed by first securing the fence posts in their upright positions and then installing the rails between the posts.

Abstract: A method and a machine for moving a stack of flat corrugated board sheets from a stacker to a delivery locus. A carriage is supported for fore-and-aft horizontal movement along a main frame and has a transverse frame member supported on said carriage for vertical movement, both the horizontal and vertical movement being power driven. A first series of vertical, horizontally perforated plates is secured against rotation to the transverse frame member, and a second series of vertical plates is supported so that they can be moved toward and away from the first plates by power means; the second plates have a series of horizontal pins projecting therefrom and aligned with the perforations through said first plates.