IMPROVE- MENTS IN GLAZING BARS OR ASTRAGALS FOR ROOF LIGHTS AND WINDOWS
Year: 1884

page_text: We, WILLIAM LESTER, of 11 West Regent Street, Glasgow, in the County of
Lanark, North Britain, Merchant, and WILLIAM RICHARD LESTER, of the same
place, Engineer, do hereby declare the nature of our said invention for "IMPROVE-
MENTS IN GLAZING BARS OR ASTRAGALS FOR ROOF LIGHTS AND WINDOWS," to be
as follows, that is to say :—
The said Invention has for its object to construct glazing bars or astragals for
roof lights or windows in an improved manner, in cases in which from circum-
stances affecting comparative costs or from other considerations it is desired to
employ wood instead of metal for making such glazing bars, and to uso strips
of sheet lend or other thin metal for securing the glass.
The Invention consists in fixing the strip of lead or thin metal to the middle of
the top of the wood glazing bar, by a small superposed bar or lath of wood applied
as hereinafter described. The usual grooves or small gutters are formed along the
top of the bar between the middle part and each edge and the sheets of glass rest
on the outer edges of these grooves. In one modification the strip of load or thin
metal is fixed down on a flat part at the middle of the top of the bar the small
bar for securing it boing placed on the top of it and fixed by screws passed down
through the metal into the main bar below. In a second modification a groove
formed along the middle of the top of the main bar and the smaller fixing bar
is made of a corresponding shape, and the thin metal is indented into the groove
The upper
and secured by forcing the upper bar down upon it in the groove.
may be fixed by screws as in the first modification or if made deep enough to have
..sufficient rigidity it may be fixed in any convenient way at the ends only, or at
;comparatively distant intervals.
"
is
bar
In some cases a strip, of metal may be substituted for the bar or lath of wood
hereinbefore described as to be used for holding down the strip of lead,

page_text: and Windows.
We, WILLIAM LESTER and WILLIAM RICHARD LESTER of No. 11 West Regent
Street, Glasgow, in the County of Lanark, North Britain, Engineering Agents and
Iron Merchants do hereby declare the nature of our said invention for IMPROVE-
MENTS IN GLAZING BARS OR ASTRAGALS FOR ROOF LIGHTS AND WINDOWS and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
Our said Invention has for its object to construct glazing bars or astragals for
roof lights or windows in an improved manner, in cases in which, from circum-
stances affecting comparative costs or from other considerations, it is desired to
employ wood instead of metal for making such glazing bars, and to use strips of 1
sheet lead or other metal for securing the glass.
In order that our said Invention may be properly understood and readily carried
into effect we will now proceed to describe the drawings hereunto annexed.
These Figures 1 to 6 (inclusive) are transverse sections of sash bars showing
the various modes of securing the glass thereto in accordance with our present
Invention.
Similar letters of reference indicate corresponding parts throughout the
drawings.
In Figure 1, the sash bar a, is represented as having its upper surface grooved
at b, that is to say, near its outer or vertical sides. The sheets o, of glass rest 2
on that part of the upper surface of the sash bar a, which is between the grooves b,
and the vertical sides thereof. The glass c, is held down upon the sash bar a, by
means of the strip d, of lead or other suitable metal. Upon this strip d, of metal,
the bar or lath e, of wood is drawn down by means of the screws f.
At Figure 2, the sash bar a, is represented as having one central groove g, the 2
sheets c, of glass resting upon the outer edges thereof. The glass c, is secured in
position by means of the metal strip d, which is drawn down by the wooden bar
or lath e, and the screws f. In place of forming the groove g, and the bar or lath e,
with rounded surfaces as shewn at Figure 2, these may be formed of rectangular
section, the said groove 9, of a width sufficient to produce the necessary channels or 3
water-ways hereinafter referred to.
Figure 3, reprosents a means for securing the glass c, similar to that herein-
before described with reference to Figure 1, the wooden bar or lath e, in this
example, being replaced by the channel piece h, of iron, zinc or other suitable
metal.
In the example represented at Figure 4, of the annexed drawings, the strip d,
of lead or its equivalent is dispensed with, and the glass a, is drawn directly down
upon the sash bar a, at the outer sides of tho grooves b, thereof by means of the
strip, of iron, zinc or other suitable metal, which strip i, is preferably of the
section represented.
Figure 5 represents a sash bar a, having a central groove g, with the glass c,
drawn down upon its two edges, by means of the strip i, of iron, zinc or other
3

page_text: suitable metal, the said strip i, being not, as is the strip i, in the example shewn
at Figure 4, otherwise in contact with the sash bar a.
At Figure 6, the sash bar a, there represented, is provided with a strip j, of lead
or its equivalent for the purposes of preservation and the glass c, is drawn down
thereon by means similar to those represented at Figure 4.
The grooves b, and g, are of such proportions, as admit of any water of con-
densation or other moisture accumulating therein, running down the said grooves
and thereby enabling the same to be carried away by the ordinary rain-water or
other gutters.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is
First. The improvements in glazing bars or astragals for roof lights and
windows, consisting of a strip d, of lead or other metal drawn down upon and
securing the sheets c, of glass upon the grooved sash bar a, by means of a central
bar or lath of wood or iron held to the sash bar or astragal by means of screws f,
all substantially as hereinbefore described with reference to the annexed sheet of
drawings.
Second. The various modified arrangements in the construction and in the
means of attaching the glass c, to the sash bars a, as shewn at Figures 4, 5 and 6
of the annexed sheet of drawings.