GB2188359A

GB2188359A - Double glazed leaded light

Info

Publication number: GB2188359A
Application number: GB08707777A
Authority: GB
Inventors: George Thomas Penny
Original assignee: Tenby & Penny Co Ltd
Current assignee: Tenby & Penny Co Ltd
Priority date: 1986-04-17
Filing date: 1987-04-01
Publication date: 1987-09-30
Also published as: EP0243017A2; DE3782269D1; EP0243017B1; GB8609460D0; ATE81705T1; GB8707777D0; GB2188359B; EP0243017A3; DE3782269T2

Abstract

A double glazed leaded light unit comprises first (4) and second (10) sheets, and a perimeter frame (9, 11), with the pieces of glass (1, 2) supported directly against the inside of the first of the sheets (4), a first framework of lead strips (7, 7a) secured over the edges of the pieces of glass (2, 1) and a second framework of lead strips (7) secured on the outside of the first facing sheet (4) to overlie the edges of the pieces of glass (2, 1). <IMAGE>

Description

GB 2 188 359 A SPECIFICATION According to a further aspect of the

invention, a method of incorporating the different glasses of a Improvements in double glazing leaded stained glass panel into a sealed double glazed unitcomprises adhering edge regions of This invention relatesto a sealed double glazed 70 adjacent glasses of the stained glass panel together leaded light unit which has particular reference to a and to a first transparent facing sheet, locating a first stained glass unit. frame of lead strips overthe adjacent edge regions It has not proved possibleto produce a sealed so that a respective strip of theframe overlies each double glazed stained glass unitwith a conventional edge region, combining the firstfacing sheetwith a leaded stained glass panel as one boundarywall of 75 second facing sheet into a hermetically sealed the sealed unit. It has been proposed (GB-A-1 426551, double glazed unit so thatthe stained glasses and the 1147030 and 2137680to locate a conventional leaded first lead frame fie within the gap between thefacing stained glass panel in the gap between the clear sheets, and adhering a second lead frame on the glass boundary sheets of a conventional sealed outerface of the firstfacing sheet to obscure the double glazed unit but this arrangement is optically 80 edge regions of the adjacent glasses viewable unsatifactory under certain lighting conditions. through the firstfacing sheet.

It has also been proposed (in GB-A-1 491696) to The area of the stained glass panel may represent make a double glazed leaded light by securing raised substantially the entire area of the sealed unit or may strip members to both sides of one of the clearglass be located in the sealed unitwith a perimeter of the boundary walls of a conventional double glazed unit. 85 facing sheets therearound.

EP-A-0085732 discloses a substitute sealed double Preferably both facing sheets aretransparent and glazed stained glass unit constructed by sticking lead preferably are of glass. The second facing sheetcan strips and coloured plastics sheets onto the inside of betransclucent orobscured glass in some one of the clear glass boundarysheets. It has also applications.

been proposed to paint areas of the inside surface of 90 The use of Tshaped lead enables an even more one of the clear glass boundary sheets before realistic double glazed stained glasswindowto be completing the sealed unit butto even a relatively produced since the framework of T-shaped lead can inexperienced eye plastics sheets and painted areas be built up by cutting and soldering as the pattern of are seen to be substitutes for real stained glass. included glasses is assembled on a support in a According to one aspect of the invention, a double 95 manner very similarto that used for a conventional glazed leaded light unit comprises first and second stained glass window. When the framework is facing sheets of clear transparent material, a complete, it and its included glasses can be inverted perimeterframe spacing thefacing sheets apart and and adhesive applied to regions of theframe and hermetically sealing the gap formed between the glass (e.g. to corner regions where ead strips meet) facing sheets, and located within the gap,the lead 100 so that onefacing sheet of the eventual double strips and glass pieces of a leaded light, wherein the glazed unit can be pressed down ontothe inverted pieces of glass are adhered directly, at edge regions stained glass unitto adhere ittothefacing sheet. The thereof, to the inside of thefirstof thefacing sheets, a hermetical ly sealed double glazed unit can then be firstframeworkof lead strips is secured overthe assembled exactly as described before.

edges of the pieces of glass within the gap and a 105 The invention will now be further described bythe second framework of lead strips is secured on the following examples read in conjunction with the outside of the first facing sheetto overlie the edges accompanying drawings in which of the pieces of glass disposed within the gap. Figures 1 to 4show in perspective and Normally the facing sheets would be of clear glass cross-section various stages in the production of a but a glass-substitute material is not ruled outfor 110 sealed stained glass unit by a first method according either or both of these sheets. An adhesive suitable to this invention, and for adhering the pieces of glass to the inside of the Figures 5and 6show a perspective and firstfacing sheet is pure silicone. If a different cross-section a modified construction resuling from adhesive is used, itshould be degassableto leave a a second method according to this invention.

non-volatile residue. The lead framework can be 115 Figure 1 of the drawing shows two pieces of glass made from self-adhesive or T-section lead strip, the 1 and 2 which constitute part of a stained glass panel joins between the lengths of lead strip that make up 3 resting on a rectangular sheet 4 of float glass. An the framework preferably being covered with an area air-drying silicone adhesive is "gunned" into the gap of blow pipe melted solder. 5 between the pieces 1 and 2 and the pieces are slid The perimeterframe can be constructed from 120 together on the sheet 4to close the gap 5. This conventional British Standard approved materials. operation ensures that adhesive 6 fils the gap 5 and Self adhesive lead strip can be used to made the forms an upstand 6a overlying the gap on the upper second external framework, thejoins between strips surface of each piece 1 and 2 (Figure 2).

again perferaby being covered with areas of metled The other pieces of glass, preferably all of similar solder. 125 thickness, required to complete the stained glass Any of the glasses used for a conventional stained panel 3 are applied to the facing sheet 4 in a similar glass panel can be incorporated in the gap, thus way until the pattern is completed.

opening the possibility of incorporating any When all the pieces of glass are in place, the available coloured/clear/obscured glasses into the upstands 6a overlying each gap are sliced off flush unit. 130 with the upper surfaces of the glass pieces (e.g.

2 GB 2 188 359 A 2 using a razor blade) and narrow strips 7 of 27 of self-adhesive lead strips 28 is then applied on self-adhesive lead strip (e.g. 9.0 mm wide and 1.0 the exposed face of the sheet 26 to overlie the strips mm thick) are cut and stuck over each adhesive-filled 21 and edge pieces 25 of the innerframework 20to gap.(Figure 3) completethe double glazed unit.

Thejoints between the strips 7 arethen soldered 70

Claims

(e.g. in the sameway in which the lead spacer bars of CLAIMS a

conventional stained glass panel 3 would be soldered) and the perimeter of the panel 3 is 1. A double glazed leaded light unit comprising completed with edge strips 7a of lead which maybe first and second facing sheets of clear transparent bent down to contact the sheet 4. 75 material, a perimeter frame spacing the facing The panel 3 is now located in the gap 8 of a sheets apart and hermetically sealing the gap conventionally produced doubie-glazed sealed unit formed between thefacing sheets, and located using a dessicant-filled perimeterframe 9 spacing within the gap,the lead strips and glass pieces of a the sheet4from afurther glassfacing sheet 10. A leaded iight,wherein the pieces of glass are conventional edge-sealing mastic 11 and edge strip 80 supported directly againstthe inside of thefirst of 12 completesthe sealing of the unit. thefacing sheets, a firstframeworkof lead strips is To finish the sealed unit, more pieces of secured overthe edges of the pieces of glasswithin self-adhesive lead strip 7 are appliedto the exposed the gap and a second frameworkof lead strips is face of the sheet4 in positionsto maskthe secured on the outside of thefirstfacing sheetto underlying gaps 5 and thejoins between thesestrips 85 overliethe edges of the pieces of glass disposed are soldered as before. In practicethis meansthat within the gap.

two substantially similar but (opposite handed) lead
2. A double glazed unit as claimed in claim 1, in frameworks have been used -one located inside the which the facing sheets are of clear glass.

gap 8 and one outside (Figure 4).
3. A double glazed unit as claimed in claim 1 or A unit manufactured as described above has been 90 claim 2, in which the pieces of glass are adhered tested by Bostik (RTM) laboratories for initial dew around their edges to the inside of thefirstfacing point and humidity cycling and was tested to below sheet and in which each lead framework is made -600C withoutfailure. The testto BS 5713 was from self-adhesive lead strip, the joins between the satisfactorily completed. Two years after lengths of lead strip that make up each framework manufacturethe humidityseal appearsto be perfect. 95 being covered with an area of melted solder.

Visually, in no lighting condition, does the sealed
4. A double glazed leaded light unit substantially unit appearto be otherthan genuine. as herein before described with reference to Figures The mastic 11 may be Bostic (RTM) 3180 and the 1 to 4 of the accompanying drawings.

adhesive 6, Dow Corning 781.
5. A double glazed leaded light unit substantialy Figure
6 shows, in cross-section part of a double 100 as hereinbefore described with reference to Figures glazed unit made by a modified method in which a 5 and 6 of the accompanying drawings.

framework20 of T-shaped lead strips 21 (see Figure 6. A method of incorporating the different 5) is built up around pieces 22 of glass. The upright of glasses of a leaded stained glass panel into a sealed theTis as long asthe glass pieces 22 arethickand is double glazed unit which comprises securing the located in the gap between adjacent pieces 22. The 105 glasses of the stained glass panel directlyto a first horizontal bar of the T overlies the edge regions of transparent facing sheet, locating a firstframe of the pieces 22 and the lengths of lead strip 21 are lead strips over adjacent edge regions of the glasses blow-pipe soldered at 23 as the assembly proceeds so that a respective strip of the frame overlies each on a fiat supporting base 24 uniti the pattern is edge region, combining the first facing sheet with a complete. L-shaped edge pieces 25 of lead can be 110 second facing sheet into a hermeticaly sealed double used to markthe outer boundary of the pattern of glazed unit so that the stained glasses and first lead stained glass. frame liewithin the gap between thefacing sheets, The base 24 and its supported pattern of glass and adhering a second lead frame on the outerface pieces and lead framework is now inverted and a of the firstfacing sheetto obscure the edge regions silicone adhesive (e.g. Dow Corning 781) is 115 of the adjacent glasses viewable through the first "gunned" onto the joints between the lead strips 21 facing sheet.

and all around the outer boundary of the pattern.
7. A method as claimed in claim 6 in which both Pressing a sheet of plane transparent glass (26 facing sheets are transparent glass sheets and in see Figure 6) onto the inverted pattern of glass and which edge regions of adjacent glasses of the lead, secures the components together and provided 120 stained glass panel are adhered together and to the the amount of adhesive applied to each location 23 first facing sheet of glass.

and around the outer edges is not enough to spread
8. A method of incorporating the different beyond the limits of the horizontal bar of the glasses of a leaded stained glass panel into a sealed T-shaped lead strips 21 of the L-shaped edge pieces double glazed unit substantially as hereinbefore 25, the adhesive will not be visible when the pattern 125 described with reference to Figures 1 to 4 of the of glass and lead is viewed through the sheet26, in accompanying drawings.

the hemetically sealed double glazed unit. The sheet
9. A method as claimed in claim 6, in which the 26 is combined with a second sheet of glass 29, edge adjacent glasses of the stained glass panel are mastic 30 and dessicantfilled framing strip 31 to assembled together with a first frame of T-shaped form a hermetically sealed unit. A second framework 130 lead strips whose end regions are soldered together 3 GB 2 188 359 A 3 and the u prig hts of the T-shaped lead strips lie between the adjacent glasses and the first frame and assembled glasses are secured to one face of the first facing sheet by adhesive applied to edge regions of 5 the glasses and to the uprights of the lead strips.
10. A method as claimed in claim 9, in which edge regions of the first frame employ L-shaped lead strips.
11. A method of incorporating the different glasses of a leaded stained glass panel into a sealed double glazed unit substantially as hereinbefore described with reference to Figures 5 and 6 of the accompanying drawings.

Printed for Her Majesty's Stationery Office by Croydon Printing Company (UK) Ltd,8187, D8991685. Published by The Patent Office, 25 Southampton Buildings, London, WC2A l AY, from which copies maybe obtained.