US2840869A

US2840869A - Glazing with glass sheets

Info

Publication number: US2840869A
Application number: US543998A
Authority: US
Inventors: Fegan Cecilly Mary
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-12-09
Filing date: 1955-10-31
Publication date: 1958-07-01
Anticipated expiration: 1975-07-01

Description

July 1, 1958 'r. G. FEGA-N 2,340,859

GLAZING WITH GLASS SHEETS Filed om. 51, 1955 2 Sheets-Sheet 1 Inventor m ans a. PEG-AN anamogm m Attorney United States Patent F GLAZING WliTH GLASS SHEETS Thomas G. Fegan, Hathersage, England; Cecily Mary.

Fegan, administratrix of said Thomas G. Fegan, deceased Application ()ctober 31, 1955, Serial No. 543,998

Claims priority, application Great Britain December 9, 1954 2 Claims. (Cl. 20-564) subject to possible shock, either parallel to the planes of the sheets or at right-angles. It is usual for wash leather (chamois leather) to be fitted round the edges of the sheet to give it some protection against shock by interposing material of some resilience between the glass and the faces of the glazing recess in the window frame. The shock protection is, however, slight, and the wash leather has the disadvantage that it acts as a wick to carry moisture under the glass edge, with consequent danger of rotting of woodwork. It is also difficult to apply; Putty and putty-like compositions do provide sealing against moisture, but do not act to absorb shock.

The present invention comprises a sealing strip adapted 2,840,869 Patented July 1, 195 8 the sheet, and the corners of the edge are left free within along the lower edge of a sheet, where the sealing strip is subjected to compression by the weight of the sheet, the midway contact of the edge proper is largely maintained as the bottom of the channel compresses. The bottom of the channel recess may advantageously be bowed initially to assist in obtaining this result.

A suitable semi-soft plastic material is polyvinyl chloride (P. V. C.) which may be readily extruded with the required section of the strip viz., narrow mouth, side walls thickened at their mouth edges, and-preferablywith the base bowed downwardly externally and upwardly internally. When expanded on to the edges of ,a sheet, the P. V. C. strip generally maintains its predetermined form, since it (unlike soft rubber) does not flow under pressure.

Several embodiments of the invention will now be described with reference to the accompanying drawings, in which Figure 1 is. a section through one form of sealing stripr'with its side walls thickened to form narrow ribs;

Figure 2 is a section showing a strip as in Figure 1 applied to a fitted sheet of glass;

Figure 3 is an elevation of a corner of a sheet of glass v Figure 4;

to be applied round the edges of a sheet of glass for in terposition between the glass and the window frame, the strip consisting of a channel of semi-soft plastic material, with the mouth of the channel recess narrower than the bottom, so that the channel must be expanded to fit round the edge of a sheet of a thickness substantially equal to the width of the bottom, and with the side walls of the channel thickening outwards towards the month end of the channel, whereby sealing pressure between the window frame and the sheet is transmitted to the sheet through such thickened portions at a position relatively remote from the part of the edge that makes contact with the bottom of the channel recess. Shock between the sheet and the frame is thus taken by the sealing strip some distance from the extreme edge of the sheet.

The thickening of the side walls results in hollowing of the outer faces of the strip when the latter is expanded by fitting it to the sheet, and the hollowing provides aircushioning for the part of the edge that lies deep in the channel recess. The overall width of the bottom of the strip may be somewhat less than that of the expanded month end, so that the air-cushioning extends from the thickening to the inner end of the channel.

The thickening of the side walls also localises the sealing contact between the strip and the sheet and its frame, and this effectively excludes the ingress of moisture.

A further preferable feature of the strip is that the centre of the base of the strip is thickened and is convex externally before the channel is expanded on to a sheet of glass, the expansion tending to flatten this external part of the base and thus to how the bottom of the channel recess upwardly. The edge surface of the sheet contacts this bowed bottom midway of the thickness of Figure 8 is a section through a sealing strip with in internal channel recess 2 having a mouth 3 narrower than the inner bottom face 4. The bottom face is plane, as also are the inner faces 5. The side walls 6 are thickened at 7 near the mouth 3 to form V-edged longitudinal ribs. thickened and is convex centrally, as shown at 9.

When the strip 1 is fitted to the edge of a sheet 10 of plate glass (Figure 2) the mouth 3 of the channel 2 is expanded to the thickness of the sheet, and the expansion tends to flatten the bottom 8 and to bow the inner bottom face 4 upwardly to effect contact with the centre of the edge of the sheet 10, so that the corners-11 of the edge are left free within the channel. This freedom may be extended laterally by using the strip 1 with a sheet 10 of thickness slightly less than the width of the inner bottom face 4, so that clearance 12 is provided between the side faces 5, tapering away towards the contact of the expanded mouth with the faces of the sheet 10. The residue of the convex part 9 provides a central bearing below the upwardly bowed inner face 4, with cushioning clearances 13 between itself and the corners 14 of the strip 1. The ribs 7 project laterally beyond the corners 14.

The sheet 10 thus fitted round all its edges with strips 1 is ready for application to the window frame. Figure 2 shows by broken line 15 a rebate to receive the sheet, and also a two-part metal fitting 16, 17 for the rebate, which fitting itself forms no part of this invention. The

fitting

16, 17 provides a groove 18 to receive the stripl, of a width somewhat less than the overall width across the ribs 7, so that their edges are com-.

The under face of the bottom 8 is butmost important of all--sealing pressure between the sheet 10 and the groove 18 in the

fitting

16, 17 is transmitted to the sheet through the ribs 7 at such a distance from the edge of the sheet as to protect the sheet itself against shock. Moreover, the bottom 8 ofthe strip 1 is less than. the overall width across the ribs 7, so that air-cushioning recesses 20 are left between the ribs and the bottom of the groove 18:

Figure 1 shows the ends or. the fitting 16, 17 cut square, with one' fitting' abutting the en'clof another along the line 21, so that the corner of the sheet 10 is fully protected by the strip 1 in the grooves providedby the fitting.

Figure 4 shows a stripl'A with more pronounced thickenings 7A and with the inner bottom face 4*A convex inwardly' to enhance the bowing resulting from flattening the outwardl-yconvex part 9A of the bottom 82; when. the

strip. is applied to a sheet 10A, as shown in Figure Figure 5 shows the" strip IA fitted into a rebate22 in a window frame 23' and secured'by a heading 24 fastened to theframe by screws 25. The rebate 22 andthe beading 24 provide a,rectangula-r.groove 18A ofa width to receive the strip 1A over the thickenings 7A, with pressure. applied by the fixing of the beading to seal the groove externally and internally of the sheet Substantial air-cushioning, clearances A are provided below the thickenings 73A. The inner corners 26 of the strip 1A protrude somewhat, but remain clear of the sides of the groove 18A.

"The strip l A'fills the depth of 'the groove 18A,-and

the edges 27 of the thickenings 7A protrude slightly? to assist in keeping moisture away from the groove. If the strip 1A is formed of materialmatching the colour to be applied to the frame 23 andbeading 24, the exposed edges 27 are not obtrusive in appearance. The strip lA'thus permits of the sheet 10A being fixed without any trimming of it after fixing, and' without any paint having to be applied to it. ,7

In Figure 6, a corner of the sheet 10A is shown before the headings 24' are applied. The lengths of strip 1A for each side of the sheet are readily cut to accurate size, their ends being cut on a mitre 28, as may easily be effected by slicing withthe aid of a mitre block, to ensure a good fit at each corner.

Figure 7 shows a sheet 10A fitted with a strip 1A as in Figures 4 and 5 securedin a rebate 29 with the aid; of

putty or like jointing material 30. This use of the sealing strip enables a sheet of glass to be fitted, secure against ordinary shock, in a very rigid frame, e. g. of concrete.

Figure 8 shows a form of sealing strip 13 that enables a fixing beading to be dispensed with. In this case, the strip 1B much asdescribed with reference to Figure 4 has an integral portion 31 of generally triangular section connected along the apex of that section by a neck 32 to the bottom of one side wall of the strip. With the glass sheet 10B and sealing strip 13 pressed, into place in a rebate 33 (Figure 9) in the window frame 34, the triangular se be secured by oblique screws 35 (or nails) or solely by the gripping action of the triangular section on the base 36 of the rebate, which gripping action results from compression of the triangular section when the sheet 10B'and sealing strip 13 are pressed into the rebate. With such a fillet the strip, the glass sheet'complete with the strips round its edges may be firmly gripped when? pressed into a rebate in material, suchasconerete, that does. not lend a 5 tion 31 forms a fillet along-the outside of the channel, to-

itselfto fixing of the fillet by screwingor nailing. The

contact with the outside of the strip 1B is along the thickened edge 73 of the outer side wall, to remove pressure from the vicinity of the edge proper of the sheet ltlB, an enclosed air cushion 37 being left internally of the assembly between the inner wall of the triangular section and the outer wall of the strip. Holes 38 may be formed to receive the screws 35, and the head of each screw may assist in developing pressure against the outer thickening 7B by forming a countersunk depression 39 in the integral fillet 3'1.

in Figure 10, a channelled sealing strip 1C has not only thickenings 7C to lie at the mouth of a groove 18C formed by a rebate in a frame 40 and beading 41, but also intermediate longitudinal ribs 42 along its side walls, so that two air cushions 43 are formed along each side, but with the only direct pressure exerted between the groove and the glass sheet 10C through the thickenings 7C at the mouth of the groove.

The invention; provides sealing means that may be easily cut to the-lengths of the sides of a sheet to be fixed, easily applied to the edges and applied with the sheet to the rebate of a window frame. It relieves the extreme edges of the sheet from shock, and thus reduces the risk of cracking, Which usually starts from these edges, especially in the case ofplate glass; and it provides adequate sealing, against moisture. It eliminates trimming after fixing, and enables colour schemes to be matched. Furthermore, it also enables a fixing beading to be dispensed with, if desired.

What I claim is:

1-. A channel-section sealing strip of semi-soft plastic material adapted to be applied around the edges of a sheet of glass for interposition between the glass and a windowtrarne to which the edges and at least one face.

of the'sheet are to be fitted, the channel recess tapering from a; wider bottom toform'a narrower mouth, so that the sides of the strip must be expanded to fit the thickness of a sheet that at most is only slightly less thick than the width of the bottom of the recess, and the center of the base of the strip being thickened and convex externally before the channel is expanded on to the sheet of glass, whereby such expansion serves to fiat this external part ofthe base. and to force the bottom of the recess upwardly into a bow that contacts the center of the edge ofthe sheet but leaves the corners of the edge of the'sheet clear of contact with the bottom of the recess. 7

2. A channel-section sealing strip of semi-soft plastic material adapted to be applied around the edges of a sheet of glass for interposition between the glass and a window frame to,- which the edges and at least one face of the sheet are to be fitted, the channel recess tapering; from a, widerbottom to form av narrower mouth, so that the sides of the strip mustbe expanded to fit the thickness of a sheet that is less thick than the width of'the'bottom of the recess, the sides thickening outwardly outwards towards the month end of the channel, whereby a hollow is formed in the outer face of the channel interposed between, one face of the sheet and a frame deeper than the. strip when the. strip is fitted to the full depth of the frame, and the center of the base of the strip beingthickened and convex externally before the channel is expandedson to the sheet of glass, whereby the expansion of the stripon insertion of the sheet providesv that not only is sealing; pressure transmitted between; the frame and the sheet Well remote from the corners of theedges of the sheet but that the bottom of the recess is bowed to contact the center of the edge, also clear of the cornersv of the edge:

References Cited in the file of this patent UNITED STATES PATENTS