IMPROVEMENTS IN ASTRAGALS OR GLAZING BARS FOR HOLDING AND SECURING GLASS FOR ROOF-LIGHTS AND WINDOWs
Year: 1884

page_text: I, WILLIAM RICHARD LESTER, Engineer to The Pennycook Patent Glazing and
Engineering Company Limited, 58 Renfield Street, Glasgow, in the County of
Lanark, North Britain, do hereby declare the nature of my said invention for
"IMPROVEMENTS IN ASTRAGALS OR GLAZING BARS FOR HOLDING AND SECURING
GLASS FOR ROOF-LIGHTS AND WINDOWs" to be as follows:-
My said Invention relates to bars of the kinds described in the Specifications of
Patents officially numbered 1930 of 1879 and 2561 of 1881 and granted to Charles
Hill Pennycook, and has for its object to obtain a stronger astragal or glazing bar
in a simple and economical manner.
My improved glazing bar comprises a core consisting of a rolled bar of iron or
steel of T-section with the transverse web straight or curved, such bar being used
in an inverted position, and having applied to it two strips of thin sheet lead
which are folded down upon the glass when in position. A sheath of zinc, iron,
steel, copper, or brass, is applied to the bottom and upper sides of the transverse
web in such a way as to form a support or resting surface for the glass, and also so
as to clip and hold the inner edges of the thin lead strips and resist any force
tending to lift the glass and lead.
In the accompanying drawing in which the parts are shown on an enlarged scale
in order to render the small details clear, figure, 1, is a transverse section of one form
of my improved glazing bar with the lead strips as they are before the glass is
placed in position Figure, 2, is a section showing the glass in position; and
figure, 3, is a section showing another form of the bar forming the core, the glass
being shown as in position on one side but not on the other.
In the modification shown in figures, 1, and 2 the core, 4, is an iron bar of a plain
T-section, inverted and it has applied to its bottom web a sheath, 5, of zinc, iron,
steel, copper or brass, which is extended upwards at the edges of the bottom web
of the core and is doubled to form supports, 6, for the glass, 7. The part of the
sheath which is doubled over inwards to form the supports, 6, is at the same time
made to clip the lower or inner edges of the thin lead strips, 8, and is continued

page_text: inwards at the bottoms, 9, of the insides of the supports, 6, so as to hold the lead
strips close down upon the bottom web of the core." In the modification shown in
figure, 3, the bottom web of the core, 4, being curved or having its edges bended
upwards these edges extend up into the parts, 6, of the sheath on which the glass, 7,
rests. The sheath, 5, is by preference applied to the bar or core, 4, by drawing
them together through suitable dies. In the case of the modification shown in
figures, 1 and 2, the lead strips, 8, may be first combined with the sheath by being
compressed or clipped in the parts, 6, and subsequently the combined sheath and
lead strips may be combined with the core by drawing through dies:
Di thinkunth Jove at 1001.
EDMUND HUNT,
Applicant's Agent.

page_text: I, WILLIAM RICHARD LESTER, Engineer to The Pennycook Patent Glazing and
Engineering Company Limited, of 11 West Regent Street (formerly of 58 Renfield
Street) Glasgow, in the County of Lanark, North Britain, do hereby declare
the nature of my said invention for "IMPROVEMENTS IN ASTRAGALS OR GLAZING
and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement that is to say :-
BARS FOR HOLDING AND SECURING GLASS FOR ROOF-LIGHTS AND WINDOWS
"
My said Invention relates to bars of the kind described in the Specifications of
Patenta officially numbered 1930 of 1879 and 2561 of 1881 and granted to Charles
Hill Pennycook, and has for its object to obtain a stronger astragal or glazing bar
in a simple and economical manner.
My improved glazing bar comprises a core consisting of a rolled bar of iron or
steel of T-section with the transverse web straight or curved, such bar being used
in an inverted position, and having applied to it two strips of thin sheet lead which
are folded down upon the glass when in position. A sheath of zinc, iron, steel,
copper, or brass, is applied to the bottom and upper sides of the transverse web in
such a way as to form a support or resting surface for the glass, and also so as to
clip and bold the inner edges of the thin strips and resist any force tending to lift
the glass and lead.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings to
be hereinafter referred to. Figure, 1, is a plan of a portion of a roof-light showing
the astragals in position, figure, 2, being a transverse section corresponding to
figure, 1. Figure, 3, is a section of the astragal with the lead strips as they are
before the glass is placed in position. Figure, 4, is a section showing the glass in
position; and figure, 5, is a section showing another form of the bar forming the
core, the glass being shown as in position on one side but not on the other.
Figures, 3, 4, and 5, are shown on an enlarged scale in order to render the small
details clear. The same reference numerals are used to mark the same or like parts
wherever they are repeated.
In the modification shown in figures 1, 2, 3, and 4, the core, 6, is an iron bar of
a plain T-section inverted and it has applied to its bottom web a sheath, 7, of zinc,
iron, steel, copper, or brass, which is extended upwards at the edges of the bottom
web of the core and is doubled to form supports, 8, for the glass, 9. The part of
the sheath which is doubled over inwards to form the supports, 8, is at the same
time made to clip the lower or inner edges of the thin lead strips, 10, and is
continued inwards at the bottoms, 11, of the insides of the supports, 8, so as to
hold the lead strips close down upon the bottom web of the core.
The astragals
are held in position in the window frame by being entered into a groove, 12, in the
top cross bar, 13, their bottom ends being held by means of brackets, 15 screwed to
the frame, 14.
In the modification shown in figure, 5, the bottom web of the core, 6, being
curved or having its edges bended upwards these edges extend up into the parts, 8,
of the sheath on which the glass, 9, rests. The sheath, 7, is in both modifications
by preference applied to the bar or core, 6, by drawing them together through
suitable dies. In the case of the modification shown in figures 1, 2, 3, and 4, the
lead strips, 10, may be first combined with the sheath by being compressed or
clipped in the parts, 8, and subsequently the combined sheath and lead strips may
be combined with the core by drawing through dies.
.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is :-
An astragal consisting of a rolled bar of iron of inverted T-section with the
transverse web straight or curved, such bar having applied to it two strips of thin
lead for holding down the glass, and a sheath of zinc, iron, steel, copper, or brass, as
hereinbefore described.