Abstract: A windowpane assembly comprising a molding clip inserted between the circumferential end face of the windowpane and the riser portion of the fillister formed on a vehicle body for fixing a window molding onto the windowpane. The molding clip comprises a holding portion fitted into the window molding, a pair of elastic wings, and a pair of latch claws. Before the molding clip is inserted between the windowpane and the riser portion of the fillister, the elastic wings are engaged with the corresponding latch claws. When the molding clip is inserted between the windowpane and the riser portion of the fillister, the elastic wings are automatically disengaged from the latch claws and come into engagement with the rear face of the windowpane.

Abstract: A window assembly used in vehicles including a resilient frame about the peripheral edge of a glazing panel and formed to permit securement of the panel within a window opening without the use of separate attachment devices.

Abstract: A windowpane assembly comprising a molding clip inserted between the circumferential end face of the windowpane and the riser portion of the fillister formed on a vehicle body for fixing a window molding onto the windowpane. The molding clip comprises a holding portion fitted into the window molding, a central base portion, a pair of V-shaped elastic wings, and a pair of latch claws formed on the corresponding elastic wings. Before the molding clip is inserted between the windowpane and the riser portion of the fillister, the latch claws are engaged with the latch tongue formed on the central base portion. When the molding clip is inserted between the windowpane and the riser portion of the fillister, the latch claws are automatically disengaged from the latch tongue and, as a result, the elastic wings come into engagement with the rear face of the windowpane.

Abstract: A lightweight, economical window assembly for vehicles which is assembled to a vehicle as a unit preferably from the exterior, while providing strength, decorative trim, as well as a sealing function. The assembly includes a window pane, one of several types of decorative frame or trim members surrounding the pane, and one or more attaching members secured directly to the pane but concealed from view from the exterior of the assembly. Preferably the pane is glass and the attaching members are metallic studs rigidly and securely bonded directly to the glass surface with a suitable adhesive system such as that marketed under the Tenabond trademark.

Abstract: A window frame and a glazing strip or rim for a window panel in which the frame defining a window has a J-shaped channel with its open side facing toward the opening in the frame. The panel is surrounded on at least three sides of a rectangular panel by the glazing strip or rim which has a leg integral therewith and which is received in the frame channel. Such leg is flexible and resilient and can be bent to permit the free end thereof to ride over the shorter wall of the channel and snap into the channel. Preferably, the portion of the rim from which the leg extends is U-shaped in cross-section and embraces the outer edge portions of the panel. A resilient gasket is between the rim and the frame. If the rim is of metal, the wall of the rim remote from the frame has a line of weakening for tearing purposes. A resilient strip may be inserted between the leg and a portion of the rim. Also, a tool for inserting the panel in the frame and a double-glazed window.

Abstract: A weather strip assembly for a vehicle window including a weather strip or moulding and a holder. The weather strip is inserted into a gap between a window glass to which the holder is attached and the body of the vehicle. The weather strip has a hat-shaped head portion to partly cover the window glass and the body of the vehicle and a leg portion adapted to be urged against the vehicle body and to be embedded in a bonding agent. The holder has a resiliently reformable elongation which functions to force the leg portion toward the body. The weather strip assembly further may include a member for determining a proper position of the weather strip with respect to the window glass and the vehicle body.

Abstract: A molding clip assemblage for mounting a molding about the periphery of a windshield of the type comprising a base plate adapted to be attached to the peripheral edge of the window frame and a plurality of clips adapted to be attached to the base plate at predetermined intervals, the base plate having a recessed part for accommodating the lower part of the clips, the clips being provided with a retaining claw for retaining the outer edge of the molding, with a retaining mechanism for preventing the clip from being extracted from the recessed part of the base after being accommodated therein, and with an operable release member for releasing the engagement of the retaining mechanism, whereby the molding retained by the clips can be released therefrom by manipulating the operable release member.

Abstract: A windscreen mounting arrangement comprises a first part made of plastics materials in which is embedded a reinforcing metal carrier and defining a first channel, and a second part made of rubber and also defining a channel. The part has, running alongside its channel, a longitudinal slot whose mouth faces in the same direction as the channel of that part and whose walls and base are reinforced with an embedded metal carrier. The two parts are fitted together so that one side wall of the first part fits tightly into and is secured within the slot of the second part. This produces first and second channels running side-by-side and facing in opposite directions. One of these channels fits over and grips a flange surrounding the window opening so that the other channel runs alongside the window opening for receiving the window glass.

Abstract: A window glass mounting arrangement comprises flexible material which is formed to define first and second channels side-by-side and facing in opposite directions. The first channel is sized to fit over and grip a support member surrounding the window opening so that the second channel then runs alongside the window opening for receiving the window glass. The wall of the second channel furthest from the first channel has a slot for receiving a stiffening member for stiffening that wall so as to secure the window glass in the second channel. The material defining the first channel has embedded in it a metal carrier of substantially channel-shape which is capable of a limited amount of lengthwise compression but substantially no lengthwise stretching. The arrangement is made slightly oversize and then compressed into the opening. This enables the glass to "float" slightly in use and reduces stretching of the rubber at bends in the opening.

Abstract: Methods of installing bulletproof front and/or rear windshields of an armored automobile are disclosed. A first method involves rebuilding the window frame of the automobile, installing the bulletproof windshield, then recontouring the surface of the automobile adjacent the rebuilt window frame so the automobile again appears to an observer to be an ordinary automobile. A second method involves removing the standard windshields from an ordinary automobile, refitting the automobile with a mechanism having a lip of sufficient depth to retain a bulletproof windshield, inserting a bulletproof windshield and subsequently restoring the outer surface of the automobile adjacent the window frame to the profile of an ordinary automobile.

Abstract: An accessory molding strip for motor vehicle bodies comprising an at least partially exposed wrapping member made of stainless steel, and a reinforcing member made of plastic and bonded to the rear surface of the wrapping member throughout the length of the wrapping member.

Abstract: A heat conserving cover for a wall mounted air conditioning unit which comes in a knocked down condition and is capable of being readily assembled by the user at the point of installation into a tray or box shaped cover having a front wall and four side walls which are adapted to completely enclose the portion of the air conditioner extending into the room and adapted to abut with the wall structure supporting said air conditioner to provide an airtight seal therewith. The cover is composed of wall structure which has insulation throughout and an ornamental exterior so that it has the appearance of a piece of furniture, lending to the attractiveness of the cover in the room.

Abstract: This invention relates to an add-on reinforcement to an aft arch assembly for a transparency system for aircraft that improves the resistance to penetration of a windshield secured to the aircraft or its crew module via said aft arch assembly. This invention also relates to a simple method of securing the add-on reinforcement to the aft arch assembly without requiring substantial disassembly of the windshield.

Abstract: This invention relates to a thermal window construction which comprises a fixed frame member and a movable frame or operating sash member. The window is characterized in that the operating sash member includes an outwardly facing glazing surface to which a pane sub-assembly comprising two or more glass lites are connected, the bond between the pane sub-assembly and operating sash being provided by a bead or quantity of silicone interposed between an inwardly directed surface of the sub-assembly and the glazing surface through a laterally open channel, whereby complete filling of the said space may be assured. The overlapping areas of glass and metal bonded by the silicone rubber material are coordinated with the glass expanse and weight in such manner that the stress applied to the bonded areas will not exceed about 20 p.s.i.

Abstract: An opening roof comprises a frame which surrounds an opening in a roof of a vehicle and a rigid panel movable with respect to the frame to expose portions of the opening for ventilation purposes. The frame includes a flange which projects outwardly from a depending web to overlie a portions of the roof surrounding the opening. The frame is secured in position by clamping strips which act between the outer face of the web and the lower face of the roof remote from the flange, and screws which project through openings in the web to urge the strips into engagement with the web and the flange into engagement with the roof.

Abstract: A window assembly (10,110,210,310,410,510) wherein a frame (16,116,216,316,416,516) carrying a window pane (15,115,215,315,415,515) is resiliently mounted to a wall portion (14,114,214,314,414,514) by a seal (20,120,220,320,420,520). A retainer (21,121,221,321,421,521) is secured to the wall portion and defines a retaining portion (24,124,224,324,424,524) disposed adjacent the frame so as to limit movement of the frame relative to the wall portion. The retainer retaining portion may be juxtaposed to one or more stop shoulders of the frame which may be defined by the side surfaces of a recess (26,126,226,326,426,526). The retainer may be alternatively mounted outwardly or inwardly of the wall portion. The retainer may be removably secured to the wall portion by threaded securing elements (23,123,223,323,423,523).

Abstract: A boot is provided which includes a resiliently deformable frame shaped to the respective contours of the rear window aperture of the truck cab and front window aperture in the forward wall of the camper. The opposite end walls of the boot frame terminate in portions adapted for attachment to the cab an camper. One of said portions includes magnetic attachment means.

Abstract: A mounting arrangement for window panes in an automotive vehicle includes a cover strip and a column for receiving the window panes. The column has a flange which extends into a joint between the window panes, which are arranged along a contour line of the vehicle, in a manner that does not extend beyond the contour line. The cover strip fastens to the flange in a manner hiding the joint. According to a preferred embodiment, the flange is a component of a locking plate that has a T-shaped cross section, the locking plate being joined to a cap-shaped profile of the column and the cover strip having a section that fastens around the flange in a clip-like manner.

Abstract: An improved method for preparing multi-pane glazing units using a two-part adhesive system and improved glazing units prepared by the method.

Abstract: A molding member is installed and supported on the outer surfaces of supporting members which are mounted on the flange portion of a backdoor of a motor vehicle and the edge portion of a window of the same which are secured to each other. Each supporting member is of E-shape defining first and second spaces therein, in which the flange portion of the backdoor is securely disposed in the first space and the edge portion of the window is securely disposed in the second space.

Abstract: An improved tamper-proof window unit comprising similar first and second quadrilateral centrally open frame members adapted to be mounted about an opening respectively on opposite sides of a door. Each frame member has a narrow elongated quadrilateral front panel extending generally in a plane parallel to the door and marginally about the door opening with an outer edge portion partially overlapping the door adjacent the opening. A small countersunk front-to-rear screw hole is provided on each side of the front panel to communicate with the door opening. A narrow elongated quadrilateral and generally L-shaped integral flange extends along the front panel with each L-shaped flange comprising first and second panels. The first panel of each flange projects generally rearwardly and the second panel projects from the rear edge of the first panel outwardly with respect to the door opening.

Abstract: A technique for factory glazing of glass panes in window frames is provided. Each frame has a pane receiving groove which corresponds in its depth approximately to the thickness of the glass pane. This groove is filled with a pane edge and a hardenable sealing mass. The invention further relates to a process for factory glazing of glass panes, in particular, glass panes which have been individually inserted into a window frame groove that is open or accessible on one side and that corresponds in its depth approximately to the thickness of the glass pane. When such groove is filled with a hardenable sealing mass, the latter is subsequently hardened.

Abstract: A sealing device comprising a door or gasket of rigid material curved in one direction and straight in another, as in the form of a portion of a cylinder, and having convex and concave surfaces. Either or both such surfaces has a circumferentially continuous groove across the straight and curved portions that contains a molded in place packing of resilient material. The packing has a portion projecting from the groove and has a recess extending into the groove. The sides of the recess are either parallel to a transverse axis whose direction corresponds to the direction of travel of the mold members relative to each other when separating so that there are no undercuts in the packing material into which portions of the mold would project and prevent separation of the mold members after the molding operation without damaging the packing.

Abstract: A molding holder for a motor vehicle which includes two molding holder members. Each of the two molding holder members includes a fixed base to be coupled to a body panel, a clasp extending from an edge of said fixed base having a lengthwise groove in the inner side thereof and a guide extending from another edge of the fixed base. The two members are coupled together by a joint to form a large molding holder.

Abstract: A glass retaining clip includes a plastic anchor adapted for push-in insertion into a pierced hole, one leg of the clip having a threaded aperture therethrough to receive a screw fastener which is adapted to engage the adjacent leg whereby the legs can be forced apart forcing the adjacent leg to move into abutment against a glass window panel mounted into one side of a body window opening.

Abstract: Disclosed is a clamp for fastening an elongated strip of trim about the margin of a windshield and a seating frame carrying the windshield. A clamp component is either directly secured to the seating frame or to the margin of the windshield which, in turn, is secured to the seating frame. The clamp component has outwardly projecting guides receivable within guide slots of an overlying holding component. The holding component includes a pair of elastic strips for holding the strip of trim. The holding component is movable transversely on the clamping component in a direction transverse to the margin of the windshield to compensate for dimensional deviations of the sealing frame and windshield.

Abstract: This aircraft windshield resistant to penetration by impact with birds has a plurality of transparent plastic sheets bonded together with flexible interlayers. The innermost sheet of the laminate is formed of a polycarbonate. A metal bearing strip is adhesively bonded to the inside face of the innermost sheet along at least one edge with the inboard edge of the bearing strip curling gradually away from the inner face of the innermost plastic sheet and with a wedge-shaped body of flexible adhesive therebetween. A row of countersunk attachment holes along the edge of the windshield extends through the transparent sheets and the bearing strip and each contains a bushing for receiving a flat head bolt for connecting the windshield to an airframe structure. The inner end of each bushing has an enlarged shoulder having a length not less than the thickness of the bearing strip for bearing on the airframe structure.

Abstract: A leak-free, insulated basement window assembly which includes a prefabried panel comprising an insulating member and impact resistant strip joined to the insulating member. The panel has a pre-cut opening which is adapted to be aligned with a window opening in a masonry basement wall. A plastic window unit, which serves as an insulating membrane, is inserted into the opening with the window unit being located adjacent the outer basement wall.

Abstract: A glass plate is attached through the medium of an adhesive layer to the bottom of a stepped portion which is formed along the edge of a window frame. Along the edge of the glass plate, there are fixed supporting pieces which have movable holding pieces supported thereon in such a way as to enjoy freedom of motion in directions perpendicular to the edge of the glass plate, the movable holding pieces each being provided with a claw adapted to provide engagement with the edge of a molding.

Abstract: Fasteners for securing a shaped embellishing molding across the gap between the peripheral edge of a fixed window panel and fillister support surface in which the panel is mounted in an automotive vehicle. The fasteners are integrally fabricated from a material such as plastic and are adapted to mount in the gap without the need for welded studs or other means secured to the fillister. Each fastener includes a base and pair of projecting resilient wings which are downwardly flexed to fit in the gap. The wings include beveled bearing faces that resiliently bear against the inside corner of the mounted panel and develop a reacting force tending to load and position the fastener flushly against both sides of the fillister. The beveled bearing faces also allow the fastener to take up large tolerances both in the width of the gap and in the spacing of the panel from the inner side of the fillister.

Abstract: A motor vehicle window assembly comprises painted body panels having a side wall defining a window opening, and a glass pane for closing the window opening adhesively attached to the vehicle body panels. A spacer is adhesively attached to and extends continuously along all of the longitudinal length of the side wall. A molding is mounted to conceal a space between the edge of the glass pane and the side wall and has a depending flange portion engaging the spacer. The provision of the spacer prevents the molding from mechanically contacting with the painted vehicle body panel to thereby eliminate a possibility that the paint on the body panel adjacent the window opening is chipped or peeled off by the molding.

Abstract: A hollow wall partition assembly is disclosed which comprises a flanged ceiling rail, two opposing spaced apart rows of wall panels, snap-on trim pieces engaging grooves on the ceiling rail whereby the snap-on trim pieces conceal exposed unfinished portions of the ceiling rail. The partition assembly includes a snap-on glazing cover for window framing which is engageable with the assembled ceiling rail and snap-on trim pieces. A mullion and jamb attachment clip is provided for attaching door frame jambs and vertical mullions to the assembled ceiling rail and snap-on trim pieces.

Abstract: An anchoring device for use on an access door having an outer framework adapted to be fitted in a rough opening formed in a ceiling or wall and having an exposed frame flange for hiding the rough opening, the anchoring device having a pressing member having the leading end urged to engage the ceiling or wall and forming a U-shaped bracket in cooperation with the web portion and frame flange of the outer framework and an anchor urging the pressing member into engagement with the framework.

Abstract: A molding clip assemblage is disclosed which comprises a base plate fastened such as with a double-faced adhesive tape to the peripheral edge of a window frame for enclosing a glass windshield and clips attached at proper intervals to the frontal side of said base plate. A given molding, when forced in between the base plate adhering to the peripheral edge and the clips secured to said base plate, can be safely mounted in position without inflicting any damage at all upon the peripheral edge. The molding thus secured serves to provide the windshield with a seal perfectly impervious to rainwater and dust from the surroundings.

Abstract: A vehicular assembly formed as a complete unit prior to installation and adapted to be installed as a unit from the exterior of the vehicle body with only final securement of attachment means being necessary from the interior of the vehicle body. The assembly includes a molded plastic casing or gasket, a transparent window around which the casing or gasket is molded, and an attachment member. The attachment member may be a continuous rigid frame concealed from view from the outside of the assembly having a portion embedded within the casing and a portion extending from the casing by which the entire assembly is secured to the vehicle body. Alternately, separate attaching members are embedded within the casing. Decorative strips may be secured to the casing exterior. The casing may be molded around only one edge of the window thereby forming a flexible, resilient hinge allowing the window to be moved between open and closed positions.

Abstract: There is disclosed a silo door system designed to adapt older silo constructions for automated unloading, or to be employed as a general door system, if desired. The system includes a number of apertured panel sections clamped to the silo wall in aligned relationship, with door members for selectively closing said apertures. In addition, there is disclosed a double arm unloader chute positioning means for maintaining alignment of an unloader discharge chute with the apertures in said panel sections.

Abstract: Several embodiments of window frame assemblies comprising novel window framing members for supporting a glazing product are described. In one embodiment, a window frame assembly is described comprising a conventional framing member including a novel rotatable rod means for preventing the cutting through of the framing member as by a saw. In another embodiment, a window frame assembly is described comprising a framing member for installing pre-glazed windows with or without a rotatable rod means in the framing member, said member including a separately attachable leg member for attaching the pre-glazed window to a pre-installed sub-framing member. In still other embodiments, window frame assemblies are described comprising novel mullions for joining pairs of pre-glazed windows. The mullions, as described, may optionally include means for the attachment of a partition and the aforementioned rotatable rod means.

Abstract: A temporary transparent insulating installation is disclosed for mounting on the inside of a window frame. This installation provides for increased insulation of buildings without necessitating an increased number of glazings in a window. The installation comprises a clear plastic sheet with a length greater than the height of the window frame, having a first connecting strip along a top edge. The sheet has side edges with sealing means adapted to seal with two side surfaces of the window frame. The second connecting strip is permanently attached to the top surface of the window frame and is adapted to mate with the first connecting strip along the top edge of the plastic sheet. At least one weight is provided to hold down the plastic sheet on the bottom surface of the window frame. In another installation two or more clear plastic sheets can be hung in a window frame.

Abstract: An oven door construction including an improved oven door structure and method of forming the same wherein a plurality of viewing panel assemblies are mounted removably to door panel elements defining a hollow door through which air is conducted for cooling aligned front and rear viewing panels of the door construction. The front viewing panel assembly is pivotally mounted to the front panel of the door and may be readily removed therefrom upon removal of a small number of securing elements. The rear viewing panel assembly is mounted to the rear panel of the door and is readily removable therefrom upon separation of the door front and rear panels. The rear viewing panel assembly includes a plurality of mounting clip devices engaging opposed edge portions of the rear viewing panel to clamp the rear viewing panel therebetween.

Abstract: A method of converting single pane glass to multiple pane hermetically sealed insulating glass without removing the existing glass sash and frame by using a preformed elastomeric (neoprene) glazing gasket as a mechanical seal. The preformed neoprene rubber seal glazing gasket is supported on a suitable frame of metal, aluminum, or other construction material. The glazing gasket support frame is attached to the existing sash or frame with suitable fastner. The preformed elastomeric glazing gasket is mechanically compressed against the existing lite of glass by the force of the fastner when the support frame is tightened against the existing sash or frame. This mechanical compression of the preformed elastomeric glazing gasket against the existing lite of glass forms a seal that is impervious to air and water vapor. The preformed elastomeric glazing gasket is grooved for support of the second lite of glass that is required to form the multiple pane hermetically sealed insulating glass unit.

Abstract: A laminated glass-plastic glazing unit suitable for aircraft is disclosed. The unit comprises a pair of sheets of rigid transparent material such as glass or different sizes and an integral interlayer of thermoplastic material having a higher coefficient of thermal expansion than the sheets of rigid transparent material. The interlayer is preponderantly plasticized polyvinyl butyral and integral therewith between at least one of said rigid sheets and said interlayer is a thin layer of polyurethane to reduce the tendency of the interlayer to pull chips from one or both of the rigid sheets when the unit is exposed to extremely low temperatures while in flight in high-flying aircraft.

Abstract: A vehicular window assembly formed as a complete unit prior to installation and adapted to be installed as a unit from the exterior of the vehicle body with only final securement of attaching means being necessary from the interior of the vehicle body. The assembly includes a molded plastic casing or gasket, a transparent window covering an aperture in the casing and an attachment member for attaching the casing to the body having a portion molded or embedded within the casing. The attaching portion preferably includes a frame bezel and retaining projections extending into the casing or gasket on one side of the frame. Together with the resilient gasket or casing, the projections accommodate any deviations in contour or curvature between the frame and window. The gasket or casing is preferably injection molded polyvinyl chloride.

Abstract: A flexible, low-mass, non-fragmenting burst member or panel is provided which is extremely predictable and essentially instantaneous in operation, even at low burst pressures, in order to safely vent and protect pressure vessels such as bag houses or the like from the potentially catastrophic effects of internal explosions or adverse high-pressure conditions. The panel structure preferably includes a thin metallic substrate having a pattern of tape directly applied thereto, with a coating of epoxy paint over the tape pattern and substrate; sharp-breaking, shear burst lines are thereby produced along the edges of the tape pattern which ensures that the panel will instantaneously vent a pressure vessel through essentially the entire area of full vent opening, thus giving a degree of operational predictability impossible to attain with conventional burst-type venting structures.

Abstract: This invention relates to a unitary window assembly for vehicles and particularly to a frame or sash for resiliently supporting one or more windows in the areas between the windshield and the cab of the vehicle.

Abstract: A viewing window structure for an aquarium tank and the like includes a removable water pressure resistive viewing panel which presents a substantially uniform water-tight face to the water side thereof. The window structure comprises supporting seat means embedded in a tank wall adapted to receive the water encountering viewing panel. A flange of the supporting seat means is operative to sealably confront the water side of the window panel and to provide a substantially flush water-tight seal. Pressure retaining frame means and supporting hardware are provided on the dry side of the window panel.

Abstract: A bank window frame structure wherein bullet-proof glass is installed from the outside of a bank building wall in which the frame is located, and the glass is clamped in the frame in a weather-proof manner with a sealed joint all around by clamping means accessible only at the inside of the building wall. All sill, head and side frame members are composed of cut lengths of formed channel-shaped, sheet metal, base and support members secured together in box-like cross-sectional arrangement. The glass is installed from the outside of the frame, with sealing gasket means around its perimeter, and is retained by a formed sheet metal retaining channel member which compresses the sealing gasket means to provide the weather-proofed joint. The clamping screw means for the retaining channel is accessible only at the inside of the frame.

Abstract: A channel shaped sealing strip is made of two L-shaped members which lock together to define a channel. Each member may be made of extruded flexible material such as plastics or rubber in which is embedded a metal core or carrier. Each member may define on one of its walls a gripping rib which, in the assembled channel, faces the corresponding rib on the other member and extends continuously along and within the channel to assist in holding the strip onto a mounting flange. The extruded material of the two members may be of respectively different hardnesses. The strip may be made up into a closed loop frame, the two members along one side of which may be pulled apart to facilitate mounting of the frame on to its mounting flange.

Abstract: A modular bank window construction having a main window frame and a glass frame within the main frame in which bullet-resistant glass is mounted. Window frames of various widths are assembled with the same vertical window frame components and with horizontal window frame components cut to various lengths depending on a selected window width. Various window widths are assembled using one or a plurality of standard sized bullet-resisting glass panels. The exterior portions of the main window frame may be clad with any one of a number of different thin sheet materials such as bronze, aluminum, stainless steel, and various colors of vinyl material to satisfy architectural specifications. The cladding and primary window frame components are constructed to provide weather-sealed joints at the primary frame corners and also between the main window frame and glass frame.

Abstract: A concrete wall is formed with at least one discharge opening and has an outside surface and an inside surface formed with a recess which surrounds said discharge opening. A door-frame extends in said recess and has corners and a peripherally extending door abutment. A door is disposed in said discharge opening and engages said door abutment. Frame-clamping means are provided to force said door frame into said recess and comprise pins carried by said door frame at least at said corners and extending outwardly through said discharge opening, and clamping plates engaging said outside surface and cooperating with said clamping pins.

Abstract: A carrier and clamp assembly for a vehicle window assembly having a window frame support structure within which a window panel is retained by the carrier and clamp assembly that includes a carrier having a retainer stud extending from one side thereof for insertion into an aperture in the support structure, the opposite side of the carrier being provided with a plurality of parallel serrations, the carrier being of a size to serve as a support surface for an edge of the window panel. A clamp is slidably received and guided on the carrier by a tongue and groove arrangement on these elements, the clamp being provided with parallel serrations positioned to interlock with the serrations on the carrier in such a manner so that the clamp can be moved across the carrier in one direction only, that is, in a direction toward the window panel to serve as a retainer for the window panel when positioned in abutment against the window panel.