Abstract: A burglar bar apparatus for mounting to a frame of a window opening in a building includes at least one extendable mounting member on at least one side edge of the apparatus and having substantially coextensive guard means externally protecting such mounting member.

Abstract: A pair of movable frame sections of a window guard are adapted for horizontal movement selectively to an inner retracted position and an outer extended position. Actuator means is operatively connected to the frame sections for moving the frame sections selectively to retracted position and extended position. Projections are carried by outer portions of the movable frame sections in position to penetrate adjacent frame members of a window opening upon movement of the frame sections to extended position.

Abstract: An anti-burglar guard for a double hung window construction including a generally rectangular frame having upstanding side frame members mounting vertically staggered slidable sashes. The window guard includes a transversely extending elongate barrier and anchoring members, adjustably mounted on the barrier, for mounting the barrier on the side frame members adjacent one of the window sashes. The barrier mounts a stop which projects into the path of the other window sash to limit sliding movement thereof.

Abstract: Apparatus constituting a grill for use as a gate, door, window or the like, adjustable for fitting upon a frame to cover an opening.

Abstract: An adjustable security barrier comprising three sections whose relationship to each other can be adjusted to expand or contract the area covered by the security barrier. The barrier uses hidden wedge nuts, with bolts to secure the sections together. The bolts and nuts are inaccessible when the barrier is in the locked position. A sliding rod is adapted to be inserted into a hole in the passageway so that the barrier can be locked into place by the use of a padlock. Hinged mounting plates allow free swinging motion of the barrier. The hinges and mounts are inaccessible when the barrier is in the locked position.

Abstract: A casement covering comprising a metal frame rigidly secured to glazing, the glazing being substantially shatter resistant, and means securing the apparatus to a casement comprising fasteners that cannot be removed by an ordinary screwdriver.

Abstract: A window guard for double-hung sash and window which is laterally and vertically adjustable to adjust to windows of different dimensions and which is cooperatively proportioned and related with a related window structure whereby the inner lower sash and the upper outer sash of the window structure are shiftably to afford ventilation through the upper and lower portion of the window structure and which prevents ingress and egress of unauthorized persons through the window structure. A guard structure of the character referred to having novel anchoring means and novel locking means to secure the guard in a related window structure.

Abstract: A metallic structural fencing having inter-engaged horizontal and vertical members is disclosed. The horizontal members are lanced to provide laterally projecting web sections adapted to receive and engage the vertical members which are secured to the top and bottom horizontal members. The horizontal members are secured to vertical framing members at their ends.