Static structures (e.g. – buildings) – Window or window sash – sill – mullion – or glazing – U-shaped channel formed of separate strips overlapping pane...
Patent
1996-12-23
1998-08-11
Wood, Wynn E.
Static structures (e.g., buildings)
Window or window sash, sill, mullion, or glazing
U-shaped channel formed of separate strips overlapping pane...
52667, 52314, 52456, E06B 104
Patent
active
057911029
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a cruciform joint of glazing bars. The invention has particular application to a cruciform joint of glazing bars intended to simulate a traditional Georgian-type window. It is applicable to doors as well as to windows. This invention is concerned with improvements in, developments or modifications of the grid structures that form the subject of my International Patent Publication No. WO94/13920.
My International Patent Publication WO94/13920describes a grid of mutually perpendicular glazing bars comprising at least one glazing bar extending between and substantially perpendicular to an aligned pair of glazing bars. Each glazing bar in the grid has a central load bearing portion, a base portion, which projects from either side of the central portion to provide a seat for a pane of glazing material, and a clamping section. The central portion has a snap fit formation at a location which is spaced from the base portion. The clamping section is adapted to be releasably snap fitted onto the formation to clamp a respective pane of glazing material on each of the seats. Locating means are embedded in the adjacent ends of the bars of the aligned pair and extend therebetween through the intervening glazing bar to locate the aligned pair of glazing bars substantially relative to one another. The central load bearing portion and the base portion of each bar are interlocked. The snap-fit formation is solid, and formed at an outer end of the central load bearing portion and extends outwardly beyond a respective pane of glazing material that is clamped on the seat when the grid structure is glazed. The end portion at the other end of each central load bearing portion extends outwardly beyond the seat and is also solid. The snap fit formation and the end portion at the other end are interconnected by a mid-portion which is hollow and extends substantially symmetrically about the longitudinally extending neutral axis of the central load bearing portion. The locating means embedded in the adjacent ends of the aligned pair of glazing bars are received within the interior of the hollow load bearing portions thereof. The cross-section of the central load bearing portion, which is a form of beam analogous to an I-section beam, maximises the geometrical moment of inertia thereof so that the grid structure has substantial strength such as to withstand considerable wind loads and other loads (such as those due to a person either deliberately pushing or accidentally falling against the grid) to which it may be subjected when installed.
DE-U-8607012.6 discloses the use of a linking plate which is engaged in the hollow interior of an aligned pair of glazing bars and which extends through a slot formed from one end in an intervening glazing bar which is normal to the aligned pair.
According to the present invention there is provided a cruciform joint of glazing bars comprising one intervening glazing bar extending between and substantially perpendicular to an aligned pair of glazing bars, and a linking plate which has two ends, and which is fitted at either end in a respective one of the aligned pair of glazing bars, and which extends therebetween through a lateral aperture in the intervening glazing bar to locate the aligned pair of glazing bars substantially relative to one another and the intervening glazing bar, wherein part of the lateral aperture forms snap-fit locating means for the linking plate which comprises a key, the linking plate and the lateral aperture being such that the linking plate is operable to be inserted through the lateral aperture and, when so inserted, to be rotated until snap-fitted into the snap-fit locating means, the cruciform joint being formed when the linking plate is snap-fitted into the snap-fit locating means.
Preferably each of the glazing bars comprises a central load bearing portion, a base portion and a clamping section, the central load bearing portion having a solid formation at one end and a solid end portion at another end, the solid formation and end portion bein
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Poynder Colin Leslie
Sheath Gary
Sheath Gary
Wood Wynn E.
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