Abstract: An electrically conductive anti-intrusion device characterized by a free-standing grill of brittle frangible rods cantilevered across an opening to be protected, with a breakable electrical conductor within the rods, the rods and conductor being sufficiently fragile to snap upon an attempt to dislodge the grill, thereby generating an alarm.

Abstract: An improved security bar system for louvered windows is disclosed. The window unit has louvered blades which pivot on horizontal stub shafts.The security bars are mounted on the stub shafts where the louver blades hide them from view and provide an esthetically pleasing window unit. Each security bar has a hardened steel rod with holes bored in each end for receiving the stub shafts and a hardened steel sleeve which freely rotates on the steel rod and covers the rod and stub shafts. The steel rod freely rotates on the stub shafts which are themselves freely rotatable. Therefore, any attempts to cut the security bar will cause the steel sleeve to rotate. Should the steel sleeve be held stationary and cut, the covered steel rod will rotate due to the action of the saw blade.

Abstract: A conventional frame for a jalousie type window is made secure against passage therethrough by individuals by inserting bars through the openings in the side frame members normally utilized by the jalousie support brackets which are then pivoted on the bars. The ends of the bars where they project through the side frames members of the jalousie frame are rigidly connected as by welding to a respective one of a pair of bars parallel to the outer side of the side frame members. The bar ends extend beyond the second bars for embedment in a masonry surrounding a window opening adapted to receive the frame. The brackets and jalousie slats are controlled in a conventional manner.

Abstract: Improvements in guard devices for windows; a bar carrying frame removably fixable within the runs for the upper sash of a double hung sash window; improvements in guard and protective devices for double hung sash windows wherein the lower sash may be fully opened while the upper sash may be partially opened; window guard improvements where the barred frame member inserted in the window is instantly removable from the inside of the dwelling in case of an emergency such as a fire to enable egress out the window if necessary.

Abstract: A security window gate including a generally rectangular frame, and a swingable selectively locked gate associated therewith. Adjustment means is provided to permit a given sized gate to be installed within a range of rectangular window sizes without loss of tamper-proof ability. In a vertical direction, steel bars are provided with telescopic elements supported between a pair of adjacent parallel frame members. In a horizontal direction, an adjustable plate-like member of generally L-shaped cross section is provided with elongated slots for bolting to the frame element, the plate being cut to required length, if necessary, at the time of installation.

Abstract: Assembly for dampening vibration of a glass panel mounted in a vehicle window opening bordered by the body panels of the vehicle. A rigid support member is disposed adjacent an inside surface of said glass panel, and is parallel to the vertical axis thereof. A resilient joining member is disposed between the contiguous surfaces of said support member and said glass panel for preventing the glass panel from being excited to vibration amplitudes and frequencies which might cause the glass panel to shatter.

Abstract: A removable window security guard which is mountable within the window frame of a double sash window. The guard is engaged and secured within existing channels of the window frame to prevent entry from outside a window. The guard does not require the use of locks or other such devices which would inhibit easy removal of the guard in the event of an emergency. Removal of the guard is accomplished by raising the lower window sash to its maximum height and pulling the guard inwardly and downwardly.

Abstract: An improved reinforced locking window assembly including a rectangular reinforcing structure and a plurality of reinforcing rods. The rectangular reinforcing bar structure aligns with the rails and stiles of a window sash with the rods aligned with the muntins of the sash. A set of troughs and channels are provided in the rails, stiles, and muntins of a pair of sash halves which fit over the reinforcing structure. The two sash halves are joined together around the reinforcing assembly and thus a window sash of conventional appearance, but containing rigid metallic reinforcing elements is provided. The preferred form includes a locking assembly within the check rail of one sash. The lock includes a pair of lock pistons which may be extended longitudinally out of the distal ends of the lock case on the check rail to engage a pair of receiving holes to which they are aligned in the side jambs.

Abstract: Apparatus for securing a window or door that has a slidable sash includes a grille that has a set of spaced parallel bars that extend in the direction of motion of the slidable sash. The grille fits into the frame of the window and is secured there by a locking bar or other means. A flange on the slidable sash includes holes through which the bars pass as the sash is moved. The flange is captive on the bars and serves to prevent an intruder from pushing the grille into the room from the outside. The grille can be quickly removed from inside the building by an occupant who must flee in the event of fire or other emergency.

Abstract: A window shield adapted for sliding windows in domestic buildings and providing weather protection, increased security, safety and noise reduction. The shield includes a sheet produced in plastics material to cover the window opening or a part thereof. The sheet includes edge strips along each transverse edge in the form of moulded portions of the plastics sheet bent in opposite directions to one another, out of the plane of the sheet. A central moulded rib is included in the sheet when extra rigidity is required. Further improvements in rigidity are provided by metal edges fixed along the edge strips. Two methods of attaching these shields are described: inserting lips of upper and lower attachments into grooves of extruded aluminium window frames, the lips being parallel to, and equally distant from, the sheet; and fastening pivoting feet to the window sill, the pivoting feature allowing attachment to sills of any slope, and fastening a rigid member to the window head.

Abstract: A window guard method and apparatus for a mobile home, which method and apparatus employ wall and foundation anchors, as well as cable-reinforced structural members, to prevent unauthorized entry while also providing wind-bracing for the mobile home.

Abstract: A window assembly for controlling light and ventilation and preventing undesired passage through the window opening has spaced horizontal fixed slats, spaced horizontal movable slats which may be moved vertically to partially or wholly close the spaces between the fixed slats, and vertically spaced tool steel bars extending across the window opening and anchored at their ends in the building structure in which the window assembly is mounted.

Abstract: This security device for basement windows consists primarily of a pair of parallel spaced-apart bars secured over the window. It further includes carriage bolts extending through the concrete or cinder blocks, which also extend into a pair of channel members, and the bolts receive nuts that are enclosed in the channel members, and are rotated by a special off-set wrench, which is entered into an opening in a wall of the channel members.

Abstract: A protective device for a building adapted to be installed at a window to prevent ingress, the device comprising a first member adapted to be attached to one edge of the window; a second member adapted to be mounted to a further edge of the window, opposed to the first channel member; each member including recesses formed in it at predetermined centers; and a bar extending between a pair of opposed recesses to prevent ingress, the bars being located by the attachment of the members to the window surround.

Abstract: A security grid for an opening is provided which includes at least two support members fixed on opposite side walls of the opening. Each support member is a hollow rectangular solid. A plurality of tube members extend between and are received in the support members with each of the tube members comprising a hollow tube and a core member inserted in the hollow tube. The core has a length which is greater than the distance between opposite inner walls of the support members. Each of the support members includes holes in the side walls thereof for receiving the tube members therein. Screw-plugs are provided for fixing the support members to the side walls of the opening and the support members include stoppers for closing the ends of the hollow rectangular solid. Further, the hollow rectangular solid includes at least one opening in the top thereof and concrete is poured into the interior of the hollow rectangular solid through the hole, and a reinforcing rod may be set in the concrete.

Abstract: An inexpensive and reliable security bar that may be easily and quickly assembled between structural supports of a guarded area to prevent entry into the area. The present security bar comprises first and second elongated bar members, one end of each of which is respectively installed into a structural support. The security bar members are substantially aligned with one another across the entrance to the guarded area, so that a small gap is formed between the second ends thereof. A hollow coupling sleeve is positioned over the gap, and a dowel or pin is inserted through a hole in the sleeve and into the gap between the bar members. Accordingly, when in the assembled relationship, the sleeve and pin cooperate to inhibit the lateral and angular displacement of the bar members, whereby to prevent removal of the security bar from the guarded area after installation between the structural supports thereof.

Abstract: This specification discloses a secure yet aesthetic window unit which has particular applicability to detention buildings such as prisons, jails, cell blocks, penitentiaries, asylums and similar building structures and which is, for all practical purposes, resistant to metal cutting devices.

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.