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US 4,481,701 AGranted
Cored plastics profiles and manufacture of frames for windows and the like therefrom
OwnerMichael J. Hewittinventor
Life of this patent
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OwnerMichael J. Hewittinventor
Estimating the term…
A profile for use in the manufacture of frames for windows and the like comprises a core (1) of generally rectangular cross section of laminated plywood or cement-bonded fibrous material with a cladding (3) of plastics material, for example polyvinylchloride or polycarbonate, extruded therearound. The extruded cladding (3) provides, extending along the length of the profile, a glass (or other) panel retaining member (9) which is inclined inwardly (preferably at 45.degree. or substantially so) over a surface of the profile, and an undercut rib 11 spaced from the member (9). In manufacturing frames from the profile the latter is cut into appropriate lengths by saw cuts (31-39) extending at 45.degree. across the profile, alternate ones of the frame members being assembled to form inner (40) and outer (42) frames for a window or the like, the panel retaining members (9) being severed from the outer frame members and used as glazing strips (9'0 for the inner frame members, being supported by the undercut face (23) of the rib (11) and a glazing clip (100) supported by said surface of the profile. An alternative form of glazing clip (47) is described. The frame members are secured together at the frame corners by means of plastics material injected into cavities (207) formed through adjacent faces (205) of the frame members and provided with metallic reinforcements (211).
A method of manufacturing frames for windows from a cored extruded plastics profile for use in the manufacture of frames for panels including windows comprising a core of shape retaining material and a cladding of plastics material extruded therearound characterized in that the core (1) is of generally rectangular cross-sectional shape and in that the cladding (3) provides (a) along one surface of the profile at a locality adjacent one edge of said surface a retaining member (9) for a panel, which retaining member extends inwardly over said surface and is inclined at an angle thereto and (b) along said surface of the profile at a locality spaced from the retaining member, a rib (11) having an undercut face (23) inclined to said surface at an angle at least substantially corresponding to the angle of inclination of the retaining member (9), the retaining member being severable from the profile to form the profile into an outer frame (42) and being utilized as glazing strips (9') in the manufacture of a corresponding inner frame (40), the glazing strips (9') being arranged after insertion of a panel, to abut against the undercut face (23) of the rib (11) of the profile and to be supported by the supporting members (47) mounted on said surface of the profile, the method comprising the steps of feeding an indefinite length of the profile past sawing means organized to make a series of transverse cuts (31, 32, 33, 34, 35, 36, 37, 38, 39) at 45.degree. across the profile so as to sever therefrom successively frame members (A, E, B, F, C, G, D, H,) of appropriate lengths for assembly alternately into an outer static frame (42) and an inner opening frame (40) for a window, severing the panel-retaining members (9) from those frame members (E, F, G, H) which are to be assembled into the outer frame (42), assembling the alternate frame members (A, B, C, D and E, F, G, H) to form said inner frame (40) and said outer frame (42), and after cutting the retaining members (9) severed from the frame members (E, F, G, H) for the outer frame to appropriate lengths, utilizing them as glazing strips (9') in assembling said inner frame (40) with a panel.
A method in accordance with claim 1 characterized in that the profile includes a rib portion (19), bead (21) and intermediate rib (13) as claimed in claim 11, and in that the glazing strip (9') are arranged, after insertion of glass, or other, panel, to abut against the undercut face (23) of the rib (11) of the profile and to be supported by glazing clips (47) each comprising a pair of leg portions (51) adapted to clip over the intermediate rib and a pair of arm portions (53) providing between them a semi-cylindrical recess (57) adapted to clip around the bead (21') of said glazing strip.
A method of manufacturing frames for windows and the like from a profiled strip of indefinite length having a core of shape retaining material and a plastics cladding around the core and provided on one face with a panel retaining member which extends angularly upward from the face and inward toward the middle of the face, characterized in that said method comprises cutting the strip into sections alternately diverging and converging at 45.degree. angles across the strip, said sections being of suitable lengths for forming an outer static frame and an inner panel holding frame sized to fit within the outer frame, severing the panel retaining members lengthwise along the face of the sections for forming the outer frame, assembling the outer frame into a rectangular shape with the angular cuts forming miters at the abutting corners, assembling the inner frame in a rectangular shape so the angular cuts form miters at the abutting corners, inserting a panel centrally in the inner frame against the retaining members, and securing the severed panel retaining members on said face of the inner frame as glazing strips in opposed relation to the unsevered panel retaining members to retain the panel.
Dependencies are inferred from the claim text.