Improvements in Glazed Structures, and in Sash Bars for the same.
Year: 1889

page_text: Date of Application, 21st Mar, 1889
Complete Specification Left, 23rd Dec., 1889-Accepted, 25th Jan. 1890
PROVISIONAL SPECIFICATION.
Improvements in Glazed Structures, and in Sash Bars for the
same.
I WILLIAM LINDSAY of 23 Queen Anne's Gate in the City of Westminster Engineer
do hereby declare the nature of this Invention to be as follows :-
Rolled iron sash bars are commonly formed somewhat of a T form with a central
rib or web and side flanges standing out from its two opposite sides. An objection
to the use of such sash bars is the difficulty of holding the glass up to the underside
of the flanges of the head of the T bar and preventing the glass from being blown
inwards more especially when putty is used for holding the glass up to the flanges.
To remedy this and to give a better hold for the putty to the sides of the central
rib or web I roll the bars with ratchet like teeth standing out from the sides of the
rib or with projections of other form standing out from them or I make the rib of a
corrugated form in cross section so as to hinder putty from being moved over the
surface of the rib away from the flanges of the bar.
Or I roll the bar with a head or enlargement along its outer edge and hold the
glass up to the flanges of the bar by spring strut pieces of bent sheet metal lying
against the sides of the rih between the flanges and the head or enlargement. Or
the strut piece on one side of the rib may be in one piece with the strut on the other
side the strip of sheet metal of which they are made having a bend formed in it
along its centre to embrace and clip the head or enlargement along the edge of
the rib.
The strut pieces may be formed with parts standing out from them to bear against
the under side of the glass and uphold it whilst other parts pass between the edge of
the glass and the rib so as to prevent the struts from turning outwards away from the
rib. The strut pieces might also be continued and bent at right angles so as to
lie against the under sides of the flanges of the bar. The edges of the glass would in
this case be held as it were within a groove or trough formed by the bent sheet
metal strut piece. When the bars are of wood side struts or clips may similarly
be used for holding the glass up to the flanges of the bar and in this case they may be
formed with short teeth projecting from them to be pressed into the sides of the rib
or web of the bar so as to obtain a firm hold upon it.
Dated this 21st day of March 1889
COMPLETE SPECIFICATION.
Improvements in Glazed Structures, and in Sash Bars for the
same.
I, WILLIAM LINDSAY of 23 Queen Anne's Gate in the City of Westminster,
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
Rolled iron sash bars are commonly formed somewhat of a T form with a central
rib or web and side flanges standing out from its two opposite sides. An objection
to the use of such sash bars, is the difficulty of bolding the glass up to the underside
of the flanges of the head of the T bar and preventing the glass from being blown
inwards, more especially when putty is used for holding the glass up to the flanges.
To remedy this, and to give a better hold for the putty to the sides of the central
rib or web, I roll the bars with ratchet like teeth standing out from the sides of the
rib as shewn in Figure 1 of the annexed drawings or with projections of other form
[Price 6d.]

page_text: standing out from them or I make the rib of a corrugated form in cross section as in
Figure 2 so as to hinder putty from being moved over the surface of the rib away
from the flanges of the bar and so to enable the putty better to resist the inward
pressure of the wind against the glass.
Or I roll the bar with a head or enlargement a along its outer edge as is seen in
Figure 3 and hold the glass up to the flanges of the bar by spring strut pieces of bent
sheet metal lying against the sides of the rib between the flanges and the head or
enlargement. Such a strut piece is represented by the Figures 4. The edge of the
glass is received into the U form head of the strut piece at and the end c abuts upon
the head or enlargement along the outer edge of the sash bar. These strut pieces are
Or
embedded in the putty at a few inches apart all around the pane of glass.
the strut piece on one side of the rib may be in one piece with the strut on the other
side, the strip of sheet metal of which they are made having a bend formed in it along
its centre to embrace and clip the head or enlargement along the edge of the rib.
A strut piece of this sort is shown by the Figures 5 and 6.
The strut pieces may be formed with parts d d standing out from them to bear
against the under side of the glass and uphold it whilst other parts e e pass between
the edge of the glass and the rib so as to prevent the struts from turning outwards
away from the rib. Figure 7 shows strut pieces of this sort in use; the glass and
the putty are shown in place. The strut pieces might also be continued and bent at
right angles as shown at Figure S so as to lie against the under sides of the flanges
of the bar. The edges of the glass would in this case as also in Figure 4 be held as
When
it were within a groove or trough formed by the bent sheet metal strut piece.
the bars are of wood, side struts or clips may similarly be used for holding the glass
up to the flanges of the bar and in this case they may be formed with short teeth f
projecting from them as seen in Figure 9 to be pressed into the sides of the rib or
web-of the bar so as to obtain a firm hold upon it."
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
.claim is :-
1. Sash bars with ratchet like teeth projections or corrugations upon the rib
serving to give a better hold to the putty substantially as described.
2. Sash bars with heads or enlargements along the outer edge of the rib serving to
give a better hold to the putty and also if desired to support strut pieces substantially
as described.
3. Glazed structures in which the glass is held in place in the sash frame by strut
pieces embedded in the putty substantially as described.
4. Glazed structures in which strut pieces such as represented by the.
Figures 4, 5, 6, 7, 8 and 9 are employed to hold the glass in place.
5. A glazed structure substantially as represented by Figure 7.
Dated this 23rd day of December 1889.
TOVUTITTA
LINDSAY