Abstract: A hurricane protection system comprises a rigid sheet in a rectangular configuration positioned within a window opening with an upper edge, a lower edge, and parallel side edges. A plurality of fixed retention mechanisms are secured to the sheet adjacent to the lower edge. Each fixed retention mechanism has a plate secured to the sheet and a downwardly extending finger with a lower end positioned in an associated hole and an upper end secured to the plate. A plurality of supplemental retention mechanisms are secured to the sheet adjacent to the upper and side edges. Each of the supplemental retention mechanisms include a J-shaped finger with a short leg and a long leg terminating in a free end reciprocal between a locked orientation within an associated hole and unlocked orientation out of, but aligned with, an associated hole. Each of the supplemental retention mechanisms include a bracket with a central face attached to the sheet.

Abstract: A device is provided for protecting a window or door during severe storms. A panel, cut to fit in a window frame, is held in place by the action of the locking assemblies described herein. A rubber gasket can be used along on e side of the panel in place of some of the locking assemblies. Different embodiments of the assembly are described for mounting along the sides of the panel. A “clip-on” assembly is also described.

Abstract: The present invention relates to a face grating including bearer members having a large number of holding projections formed at predetermined intervals along their longitudinal dimension. The bearer members are fixed to the exterior wall above and below or to the left and right of a building window with the holding projections facing outwardly. A plurality of elastic panels are formed in a substantially channel-like shape with curved portions at their opposing longitudinal edges and are mounted on the holding projections of the bearer members with the holding projections pushed inwards. Elastic covering members have a large number of push-in projections formed at predetermined intervals for fitting into spaces between mutually adjacent panels at positions corresponding to the bearer members or in the vicinity thereof.

Abstract: A window guard for preventing children, house pets or objects from inadvertently passing through an open window comprising, in combination, an upper nesting tube subassembly (40U) and a lower nesting tube subassembly (40L); a retaining net (52) coupled between the subassemblies; flange (20U), flange (20L), flange (32U), and flange (32L); and hitch pin (30A), hitch pin (30B), hitch pin (30C), and hitch pin (30D) used to secure the subassemblies to the flanges. The elongated subassemblies are offset from each other, then extended across the window opening. Metal screws are employed to secure the flanges, and thus the entire window net (18), to a window frame; thereby creating an extended configuration for shielding an open window. The window net is adaptable to a variety of window frame sizes or constructions, while providing complete coverage across the entire width of the window opening.

Abstract: A protective device is provided to prevent humans from accidentally falling through openings in roofs or floors, including the domes of curb-mounted skylights and temporary utility chases that are surrounded by a raised curb. The protective device is secured to the raised curb by clamps that do not penetrate the curb, skylight frame, floor or roof, and therefore do not compromise the water-tight integrity thereof. In the case of an opening type skylight, by securing the protective device to the curb, no interference is contributed to the skylight to hinder the opening mechanism of the skylight.

Abstract: A combination grille for window, which includes four hollow side frame bars arranged at four sides, and crossed hollow transverse frame bars and hollow longitudinal frame bars arranged within the side frame bars, and a plurality of sliding cover plates respectively covered on the side frame bars and the transverse frame bars, wherein the side frame bars and the transverse frame bars each have a longitudinal opening at one side, two sliding grooves longitudinally extended along two opposite sides of the longitudinal opening; the side frame bars each have a longitudinal series of coupling holes at one side adjacent to the respective longitudinal opening; the transverse frame bars each have a plurality of longitudinally spaced transverse through holes across the respective longitudinal opening for the passing of the longitudinal frame bars; the sliding cover plates are respectively covered on the longitudinal opening at each of the transverse frame bars and the side frame bars, each having two coupling flanges l

Abstract: A high strength window screen frame that includes an extruded metal frame that surrounds a window opening in a building. The frame defines an opening. A screen plate portion of the extruded metal frame is provided on the frame proximate the opening. A flange portion of the extruded metal frame is provided on an outside of the frame away from the opening. A beveled surface on the flanged portion is provided to improve the appearance of the metal frame. A screen plate stiffener is removably affixed to a back side of the extruded metal frame to secure a screen to the frame. Heavy duty mesh screen is preferably used with a high strength window screen frame of the invention. The flanged portion of the window screen frame is bolted to an exterior wall surrounding a window opening of a structure.

Abstract: A quick-release grating comprising an actuator mounted to the grating, a frame to which the grating is rotatably mounted via of grating hinges, and a safety pin which prevents re-closure of the grating once it has been opened. The actuator comprises spring-loaded deadbolts which slide through frame and grating bores in order to lock the grating in position relative to the frame. The actuator is enclosed within a locked box which prevents unauthorized opening of the grating. An alternate embodiment quick release grating provides for an actuator disposed remote to the grating, which has the benefit of obviating the need to enclose the actuator within a locked box. An additional alternate embodiment quick release grating provides for deadbolts mounted to a grating top member and a grating bottom member. An additional alternate embodiment quick release grating incorporates a transwall structure, whereby an externally-mounted grating may be released via an internally-mounted remote actuator.

Abstract: A guard assembly for a framed opening in a structure includes mounting brackets attached to the framed opening. Each bracket has three angled flanges forming an intersection channel for retaining a grid work member extending between the mounting brackets. The grid work member is compressively urged into the intersection channels and further secured by locking screws extending through one of the angled flanges.

Abstract: A shutter for withstanding hurricane wind and pressures has permanent hardware attached to a structure and a temporary shutter that can be stored until needed. Hardware consists of brackets mounted above or below a window and sliding latches at the edges of the window. Sliding latches have a key way for a carriage bolt to enter and attach. Brackets allow a shutter that has attached hinges to latch and pivot around a bridge. The shutter can be made from any material. Hinges are attached to shutter and are able to be latched and pivoted on the brackets mounted on the house. The shutter can also be swung up to protect a high window. The shutter is swung over the window and locked down to sliding latches and carriage bolts with wing nuts through holes in shutter.

Abstract: In an improved child security fence system or pool gate, pole adapters are used for locking together two panels of the fence or pool gate. The pole adaptors are inserted into the support poles of two adjacent fence panels. The two panels are then attached to one another by a lock that bridges the two pole adaptors. The pole adaptors and the lock all have holes drilled through them that align with each other when assembled. Tension clips are positioned inside each pole adaptor so that dimples or tabs extend from the clips and through the aligned holes. In order to disengage the lock, the dimples or tabs from the clips must be simultaneously depressed at four points of the locking assembly.

Abstract: An adjustable gate including a frame having opposing vertical stiles each with a vertical groove therein, an upper gate section and a lower gate section. The upper gate section can be lowered such that only an adult dog may pass through the gate while preventing the passage of puppies. The upper gate section includes an upper crossbar with ends which slide within the vertical grooves of the stiles. Both the upper gate section and the lower gate section have a plurality of evenly spaced vertical slats. The slats of the upper gate section telescopingly or slidingly engage the slats of the lower gate section when the upper gate section is lowered.

Abstract: A new exterior skylight solar screen cover for engaging a skylight to prevent excessive heat build-up in a space below a skylight which has a frame, the solar screen comprising a frame member dimensioned for coupling with the exterior of the skylight. A plurality of louvers laterally extend within the frame member and a solar screen panel is dimensioned for being received within the frame member. The solar screen panel comprises a peripheral frame that is positioned on an inwardly extending lip of the upper frame section of the solar screen cover.

Abstract: A security door for a gate or building opening is formed of a metal frame that defines a pair of hollow stile frame members and upper and lower hollow transverse rail frame members. Each of the frame members has an inner face with an attachment flange projecting therefrom. Security receiving apertures are defined in the inner faces of the frame members. In the fabrication of the door a plurality of metal security bars are positioned relative to the hollow frame member so that the ends of the security bars project through the security bar receiving apertures and into the hollow frame members. The security bars pass over and reside in contact with the attachment flanges. The security bars are spot welded to the attachment flanges so as to permanently secure them to the door frame. Also, the frame itself is preferably formed from a single, elongated strip of metal that is roll formed and then bent at mitered corner cuts to create and delineate the stile and rail members.

Abstract: The proposed invention pertains to a configurable, mutli-purpose anti-theft window mechanism, particularly referring to an innovative device featuring practical value and economic benefits. The primary components consist of a flower planter railing, a patterned grill, and a weather-shielding canopy making up the structure, via interconnecting easy assembly mechanisms to provide users to choose any of the accessories offered to configure their desired installation with option to add or take away any of the components highlighting flexible, configurable and practical applications.

Abstract: A security grating (1) for securing store windows (2) is constituted of a mesh (3) of overlaying horizontal bars (4) and vertical bars (5). The security grating further comprises a vertical frame member (6) on each lateral edge. The frame member (6) has a recess (10) with a depth corresponding to at least half the mesh width (9) between vertical bars. Thus, the mesh can always be cut so that the outermost vertical bar is located in the recess (10). As the vertical bar (5) can be positioned at an arbitrary depth in the recess (10) there are no specific requirements for exact tolerances when mounting the security grating (1) around a window (2).

Abstract: A self-aligning, simple to use and reliable child/pet safety gate (2) that is removably mounted by a support assembly (4) to an existing room door (12) by hanging the support assembly on the room side doorknob (10) without the use of mounting hardware is disclosed. This design allows the gate to be used or stored while so mounted to the room door. Further, with the gate in its stored, hidden position behind the door, the existing room door can still be opened and closed in a normal fashion. Yet, it is a simple matter to place and secure the gate's blocking assembly (6) in its operative or blocking position by pivoting it to block the open area and then latching it to the door frame using a locking strap (54) and pin (60) and the existing door lock bolt aperture (62) to secure the blocking assembly.

Abstract: This invention relates to a sunshade anti-theft window which is composed of an anti-theft window and a rolling curtain; wherein the anti-theft window having a pivot arm installed at its bottom, the pivot arm being pivoted on bottom of window-still. The rolling curtain is installed on top of the window-still and have a rolling shaft and a sunshade curtain winded on the rolling shaft, the end of sunshade curtain being connected with top of the anti-theft window. The anti-theft window can be pushed outwardly and rotated around the pivot arm, meanwhile, the sunshade curtain will he dragged openly by the anti-theft window for shading sunlight, furthermore, the sunshade curtain can be returned to original position by means of a tension spring installed on the rolling curtain when the anti-theft is dragged inwardly.

Abstract: A storm shutter for use in high wind severe storms, such as hurricanes and cyclones, that will protect windows, doors, and sliding glass doors on the outside of a building, which can be permanently or temporarily mounted, and which allow for protection in extremely high winds while permitting the transmission of light into the building, while allowing occupants in the building to look out through the storm shutters at all times. The storm shutters can also provide protection from intruders and ultraviolet rays from the sun when in place. Each shutter includes a rigid peripheral frame with a U-shaped channel, a polycarbonate transparent sheet, and an expanded aluminum element mounted snugly in the peripheral frame.

Abstract: A vehicle window guard to keep pets safely within an automotive vehicle comprising an outer frame, at least one horizontal bar, a plurality of vertical bars wherein a number of the interior vertical bars extend past the top of the outer frame and then bend at an angle of approximately ninety degrees away from the outer frame to a point where they again bend upward at an approximate angle of ninety degrees and join with a single horizontal top bar, and the same vertical interior bars extend out away from the frame at an angle of approximately ninety degrees and join with a single horizontal bottom bar. The bent portions of the horizontal members are adapted to be inserted into the top of the vehicle window where the top of the vehicle window frame engages the horizontal portion of the bent bars and the window is rolled up to engage the bottom horizontal portion of the bent bars. The final vertical sections at the top cause the apparatus to be firmly held in place when pressure is applied from the inside.

Abstract: An alarm guard for use with an alarm signaling device that is installed to meet Underwriter laboratories (UL) 1971 requirements and that includes a chassis mountable to a surface and a visual signaling element mounted on an outer face of the chassis and extending therefrom to be activated to indicate a hazardous condition. The alarm guard includes a mesh chassis guard enclosing at least four sides of the chassis and a visual indicator guard including a plurality of guard elements mounted to the chassis guard adjacent the visual signaling element. The guard elements may be comprised of straight and curved segments and extend from the outer face of the chassis and are spaced apart along the vertical and horizontal faces of the visual signaling element to provide vertical and horizontal openings sufficient to provide a required emitted light pattern in each plane of light emission.

Abstract: A grille-type guard system, in particular a wrought iron grating assembly, includes a plurality of longitudinal bars in spaced-apart disposition, and a plurality of crossbars which are connected to the longitudinal bars at crossing points. The crossbars are formed at each crossing point with an arched section for receiving the longitudinal bars at least partially in a form-fitting manner, with the securement between the crossbars and the longitudinal bars being effected in each crossing point in non-detachable manner by a screw fastener that is received in aligned bores of the longitudinal bar and crossbar.

Abstract: An easy out fire escape window gate comprising a gate frame mounted to a window frame of a window on an inner side of an exterior wall of a building. A pair of protective shutters are provided. Components are for connecting opposite sides of the protective shutters to opposite sides of the gate frame. The protective shutters can swing to an open position and a closed position. A structure is for locking the protective shutters to the gate frame in the closed position, to prevent an entry through the window from the exterior of the building to reduce burglaries. A facility is for quickly unlocking the protective shutters from the gate frame. The protective shutters can go into the opened position, to allow people within the building to safely exit through the window during a fire.

Abstract: A storm shutter assembly comprising a plurality of panels designed to be disposed in an operative position defined by overlying, covering relation to doors, windows, and like structures or openings of a building. Each panel includes an oppositely disposed longitudinal edge specifically structured, disposed and configured to provide an interlocking engagement with a correspondingly positioned longitudinal edge of a next adjacent one of the plurality of panels so as to define a substantially closed seam along a common length of the interlocked adjacent panels, wherein the closed seam is resistant to separation as well as the passage of moisture under high wind conditions therethrough.

Abstract: A embeddable mounting device and method for permanently affixing a fixture to a concrete block wall. The embeddable mounting device comprises a first rectangular metal plate member; a second rectangular metal plate member having dimensions equal to the first metal plate; and a pair of vertical spacer members secured between the first inner surface and the second inner surface in a manner to create at least one reinforcing bar and cement receiving cavity between the first and second metal plate members, and in a manner to hold the first and second metal plate members in parallel relationship with each other such that when said first and second metal plate members simultaneously contact a planar surface the first and second metal plate members are both perpendicularly oriented to the planar surface. A method of installing a fixture utilizing the mounting device is also described.

Abstract: A protective grille assembly mountable over a window opening in a wall, includes a grill panel having a plurality of parallel, spaced, vertical bars fixed to a plurality of parallel, spaced, horizontal bars. The grille panel is of larger dimensions than the window opening such that the ends of the bars along at least one side project past the respective side of the window opening when the grille panel is mounted thereto. A plurality of fastening brackets mount the grille panel to the wall to cover the opening. Each bracket includes a loop section for slidably enclosing an end of a bar at the projecting side of the grille panel, and a fastening section for fastening the bracket to the wall after the loop section, while enclosing an end of a bar, has been slid along the respective bar to a location where the fastening section can be fastened to a mounting surface of the wall.

Abstract: Support apparatus for supporting a transparent bullet resistant panel on a door having no frame for its window includes channel elements for holding the transparent panel and support elements including brackets secured to the channel elements and disposed against the inside of the door and support elements extending downwardly within the door. Different embodiments of brackets are disclosed.

Abstract: A shutter device is provided for installation onto an exterior wall of a building over a window comprising a top bracket having a top longitudinal track therealong. A component is for mounting the top bracket horizontally above the window onto the exterior wall of the building, with the top longitudinal track facing downwardly. A bottom bracket is provided having a bottom longitudinal track therealong. Another component is for mounting the bottom bracket horizontally below the window onto the exterior wall of the building, with the bottom longitudinal track facing upwardly. A plurality of vertically extending barrier members are also provided. Element are provided for interlocking the barrier members together along their sides. A top slide assembly engages with the top ends of the barrier members, so that the top slide assembly can move across the top longitudinal track in the top bracket. A bottom slide assembly engages with the bottom ends of the barrier members.

Abstract: The subject of this invention is a security window bar system containing three types of elements. The first type comprises a plurality of vertical bars, the second type comprises at least two horizontal metal plates, and the third a plurality of right angular, generally L-shaped brackets or fasteners. The vertical bars are held in place by the horizontal crossbars which have therethrough spaced openings which the vertical bars extend. Opposite ends of the horizontal crossbars are fastened to opposite sides of the window frame by the L-shaped fasteners, each of which has one leg fastened to an adjacent end of a crossbar, and the opposite leg fastened to the window framework by a one-way screw. The result is a simple, inexpensive, and easy to install window bar grid system that prevents unwanted intruders from entering the structure.

Abstract: The invention is directed to a security grille system for attachment to screen sliding doors. Many safety features are encompassed in the design of the system.

Abstract: A window shield including a transparent projectile resistant panel mounted on the inside of a vehicle door frame covering the window opening, and a removable bracket support connected to the panel. An additional panel can be fastened by snaps to the bracket support to protect the lower portion of a driver's body if necessary.

Abstract: A skylight or roof opening protective device which comprises a pair of hinged protective frames which pivot outwardly from each other to define an "A" frame, when viewed at either end. Each frame is mounted on a base for temporary or permanent attachment to a skylight or the like.

Abstract: A method for joining tubular members at right angles for use in the construction of a rail and pole metal fence or grating, in which the poles are inserted through pre-punched multi-sided clearance holes in the rails and are secured in the clearance holes by a coupling bar that engages slots in the slides of the poles as it is inserted longitudinally inside the rail.

Abstract: A high security window apparatus is disclosed which gives the appearance of a multi-pane window. Two transparent panes in parallel, spaced apart relationship are mounted to the inner periphery of a sash. A grid of high structural integrity metal bars is situated in the air region formed between the transparent panes, each bar having opposed ends which are securely mounted to the inner periphery of the sash by a reinforcing mounting arrangement. The grid pattern of the metal bars gives the appearance of a multi-pane window.

Abstract: A storm panel is formed of a large number of elongated, narrow, thin panel sections that are arranged along a common plane and are connected together edge-to-edge. Each section has an integral flange forming a tongue extending along one of its longitudinal edges. Also, each panel has a pair of approximately parallel spaced apart flanges formed integral with its opposite edge to provide a channel of a depth and width for tightly receiving a tongue. The tongue of each section is manually fitted within and tightly held within the channel of the next adjacent section. The overlapping, narrow flanges forming the tongues and grooves at each adjacent pair of section edges provide a three-layer, narrow, bar-like reinforcement strip extending the full length of the panel. The series of reinforcement strips formed along the assembled panel, stiffen, strengthen and increase the resistance of the panel to penetration by forcefully applied objects, such as wind hurled debris during storms.

Abstract: A security bar assembly for an entrance to a building to prevent the entrance of intruders while enabling individuals to exit the building includes a plurality of security bars, a first and second mounting bracket, an interlocking member slidably mounted in relationship to the first mounting bracket.

Abstract: A guard structure for protecting egress-type alarm control devices. The guard includes a protective barrier having an access opening passing therethrough to permit immediate access to the control device. The guard further includes mounting brackets for mounting the protective barrier to a mounting surface over and in a spaced apart relation from the alarm device.

Abstract: An improved hurricane shutter is disclosed. The shutter is of the type in which a plurality of interlocking corrugated panels are attached between a header above the opening and a sill below the opening. The corrugated panels extend beyond lateral edges of the opening, so that they cover the entire opening. The hurricane shutter is improved with a reinforcement bar extending substantially parallel to and midway in between the header and the sill of the opening. The bar is additionally attached to the wall structure next to the opening. A concomitant method for improving the strength of a hurricane shutter assembly is also disclosed.

Abstract: A grille for security institutions consists of a body having two opposed faces. At least one passage extends through the body between the opposed faces. The passage has at least two changes in direction defining a generally zig zag course. When a rope is inserted into the passage the series of direction changes severely limit the ability of a person to thread the rope through the passage.

Abstract: A pair of spaced elongate primary security members extend in a first direction, and each has a plurality of longitudinally spaced openings. The ends of a plurality of elongate secondary security members, extending in a second direction which is transverse to the first direction, are located in aligned openings in the primary security members. The ends of the secondary security members are thereby held captive in the primary security members. The secondary security members span a space between the primary security members, and the secondary security members are thus spaced apart from one another. A tertiary security member supports the secondary security members between the primary security members. An electrically operable burglar protection system, having an alarm, is connected to the security members.

Abstract: Gratings for windows/doors, and more particularly window/door gratings which are structured with a plurality of integrally formed top members and a plurality of integrally formed bottom members. The top members each has a plurality of lower notches or cuts which can engage with corresponding upper notches or cuts on the bottom members and thereby enable the top members to easily, quickly, and firmly intersect with the bottom members to provide different patterns. The sections on the top and the bottom members between two notches or cuts may be of different shapes, such as, for example, a convexo-convex body with two concave horizontal surfaces.

Abstract: A high security multi-pane window and door system (10) describing a stationary outer frame (14) having sashes (15) mounted therein for relative translational movement. Each sash (15) includes a high strength grate (13) placed between two spaced and sealed panes (35) and the grate perimeter bars (33A, 33B, 33C) serving as a perimeter seal spacer bar for two spaced panes (35). A high strength elements system, being part of the high security multi-pane window and door system (10), and comprising: the grate (13) having attached with high strength joints a lock (61), trolleys (57), bottom and top interlocking elements (40, 41), interlocking with bottom and top channels (43, 69). The high strength elements system can not be disassembled nor opened while the lock bolt (49) is in locked position, even when ventilation gaps are left between the outer frame (14) and the sash (15). The high security multi-pane window and door system (10) incorporates thermo-insulating materials and features thermally broken design.

Abstract: The device 30 has a multitude of armature 10A and 10B that when joined with a hinge rod 12 through the elongated tubular head 16A of said armature 10A and 10B and subsequently joined alternately to a series of base rods 14A and 14B through the base hole 18 of said armature 10A and 10B and then anchored to the interior surface or structural studs 28 of a skylight 32 vent or other point of access becomes a formidable entity for discouraging access by unwanted entities. By virtue of an adjustability provided by a multitude of armature 10A and 10B and a hinge rod 12, the device 30 will conveniently fit the interior dimension of a multitude of skylights, vents and other points of access. The device 30 is simple and easy for a user to install.

Abstract: A security window guard is permanently installed into pre-existing awning-type windows (also referred to as Miami windows) by first fastening a separate strip inside the window jambs with fasteners that anchor the strip through a jamb to the wall. This strip has an array of holes that incorporate lead-in guides extending from each hole to a free edge of the strip. Subsequently, holes are drilled in the window jambs at locations aligned with a plurality of pins that protrude from the security frame, an array of fixed pins formed on one side of the security frame is inserted into one set of holes, and the security frame is pushed into the window frame. When the security frame is pushed into the window frame the lead-in guides act to compress spring-loaded pins extending from an opposing edge of the security frame.

Abstract: A louver assembly is provided which includes a frame having vertical side jambs, a head, a sill, and a central opening. A plurality of vertically-spaced, substantially-straight horizontal louver members extend across the opening between the side jambs, with each of the louver members including a closing section and an actuating section. A pivot member located between the closing section and actuating section extends across the entire louver member to provide structural strength and reinforcement of the louver members. Actuating means are attached to the actuating section of each of the louver members for actuating them between open and closed positions. Each of the louver members is pivotally mounted on the side jambs, so that when the louver members are in their closed positions, the louver members overlap the peripheral sealing fins, and the closing section of adjacent louver members overlap each other to tightly seal the louver assembly against inclement weather.

Abstract: A protective railing assembly for an elevator shaft door opening includes a railing which is secured to the floor at the shaft door opening by two hinged parallelogram linkages. The protective railing can be moved between two different horizontally spaced positions and thus be displaced through a predetermined distance without being removed from the shaft door opening. The railing can be mounted while the shaft door opening is still barricaded to permit the barricading to be removed and a shaft door mounted. The railing provides a continuous protection against the falling of persons into the shaft during the shaft door assembly. The protective railing is extensible for adaptation to different opening widths and the parallelogram linkages are maintained at a constant spacing one from the other to permit installation in openings of different widths.

Abstract: A security closure for a door or window opening, said closure comprising a panel of sheet material having an inner face and an outer face and a plurality of apertures therein, extending through the panel between said faces, and at least two elongate pin members each pin member having a blank head, the pin members each passing through a separate one of the apertures with the head thereof in individual abutting engagement with the outer face of the panel. A connecting member, such as a wire or an integral bolt is formed integrally with or connected to the pin on the side thereof inside the inner face and cooperates directly or indirectly with the surround of the door or window opening, whereby tensioning of the connecting member will pull the panel into the opening.

Abstract: A security grating of the type comprising an openwork grid is described. It comprises horizontal bars and vertical rods. The rods pass through openings in the bars. At the each intersection between a bar and rod, a set of tabs locks the bars against movement relative to the rod. A method is described for making these rods from common, rolled round rod stock. A four element punch is employed to displace, or swage, the rod material outwardly to form the tabs in an economical manner.

Abstract: A security grille is disclosed in which corresponding ends of rods, preferably of square cross-sectional shape, are clamped by initially-separate halves of clamps. The halves of each clamp become connected permanently to one another by a nub/bolt combination, wherein the nut has a drive head which shears off when the connection has been properly made. In one embodiment, the clamp halves are made by drop-stamping and the rods are made from hot-rolled steel bars. Alternatively, the clamp halves may be made as pressings and the rods may be made from cold-drawn steel bars. The clamp halves are provided with decorative covers.

Abstract: A window grid attachment device for removably attaching a decorative window grid to a window sash, adjacent a window pane. The device comprises a tubular barrel, a forward opening carried by one end of the barrel, a pin means carried by the barrel which is movable axially between an extended position, in which the tip of the pin protrudes forwardly of the barrel opening, and a retracted position, in which the pin is sheltered within the barrel. A finger operable handle is included for moving the device between extended and retracted positions. A latch means is carried by the barrel for releasibly latching the pin means to the barrel in the retracted position. The device is carried in an axial bore of a window grid member and allowed to contact a window sash in its extended position thereby removably attaching a window grid adjacent a window pane.