Improvements in and connected with Glazing Bars or Astragals for Roof-lights and Windows.
Year: 1890

page_text: Date of Application, 18th June, 1890
Complete Specification Left, 7th Nov., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in and connected with Glazing Bars or Astragals for
Roof-lights and Windows.
I, WILLIAM RICHARD LESTER, of 11 West Regent Street, Glasgow, in the County
of Lanark, North Britain, Engineer, do hereby declare the nature of this invention to
be as follows, that is to say:
My said invention has for its object to improve the form of glazing bars or astragals
for roof lights or windows; and to combine parts so that a soft metal such as lead or
an alloy thereof may be satisfactorily used for securing the glass. Zive or other
metals or alloys may also be used in combination with my improved bars.
In carrying out my invention according to one modification I employ a steel or iron
bar rolled so as to be of a section having an upper vertical member or web and on each
side of its lower part a member or web shaped to form a gutter. In addition there is
formed on each side of the middle part a shoulder or projection on which the edge of
the glass is to rest; but these shoulders are a little higher than the outer edges of the
gutter parts so that such outer edges do not touch the underside of the glass. The
lead or other metal combined with the bar is made to cover the vertical member and
is riveted thereto or otherwise attached so that it cannot lift off the bar; and it is
made with marginal parts which are doubled close down to the shoulders and which
are folded down on the glass when it has been placed in position.
The vertical member of the bar may be made to extend in part above and in part
below the other parts. An inner gutter may be formed on each side; and so as to
have the glass resting on its outer edge but not on the outer edge of the outer gutter,
by suitably doubling and bending the lead, the shoulders below the lead being
relatively lower than in the first modification. Or inner gutters may be formed by
fixing suitably shaped strips of zinc or other metal to the bar.
In other modifications the bar may be of cast iron or other suitable metal or it inay
be of wood in which last case the parts are made of such dimensions as to be of
sufficient strength; or the bar may be made of sheet metal bended so as to present an
outward form like what is hereinbefore described for the steel or iron bar, wood or
other suitable material being in some cases combined with such sheet metal.
Dated this Sixteenth day of June 1890.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in and connected with Glazing Bars or Astragals for
Roof-lights and Windows.
I, WILLIAM RICHARD LESTER, of 11 West Regent Street, Glasgow, in the County
of Lanark, North Britain, 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, that is to say :-
My said invention has for its object to improve the form of glazing bars or astragals
for roof lights or windows; and to combine parts so that a soft metal such as lead or
an alloy thereof may be satisfactorily used for securing the glass. Zinc or other
metals or alloys may also be used in combination with my improved bars.
I hereunto append a sheet of explanatory drawings to be hereinafter referred to in
particularly describing my improvements, the figures on the said sheet of drawings
being cross sections of various examples of my improved bars, and also showing in
section the glass and other parts in their positions as in completed roof lights. In the

page_text: drawings the same reference letters are used to mark the same or like parts wherever
they are repeated.
In carrying out my invention according to one modification shown in Figure, 1, I
employ a steel or iron bar rolled so as to be of a section having an upper vertical
member or web, A, and on each side of its lower part, a member or web, B, shaped to
form a gutter, C. In addition there is formed at each side of the middle part a
shoulder or projection, D, on which the edge of the glass, G, is to rest; but the
shoulders, D, are a little higher than the outer edges of the gutter parts, (, so that
such outer edges do not touch the underside of the glass, G. The lead or other
metal, I, combined with the bar is made to cover the vertical member, A, and is fixed
thereto by rivets, E, or otherwise, so that it cannot lift off the bar; and it is made
with marginal parts, M, which are doubled close down to the shoulders, D, and which
are folded down on the glass, G, when it has been placed in position.
The lead, L, M, may be doubled upon the shoulders, D, as shown in Figure, 2, to
form cushions for the edges of the glass, G, to rest upon.
The vertical member, A, of the bar may be made to extend in part above and in
part below the other parts, as shown in Figure, 3.
An inner gutter, ), may be formed on each side as shown in Figure, 4, so as to
have the glass, G, resting on the outer edge, but not on the outer edge of the outer
gutter, C. As shown in Figure, 4, the inner gutter, J, is formed by suitably doubling
the lead, L, M.
The inner gutters, J, may be formed by means of suitably bended strips, K, of zinc
or other suitable comparatively rigid metal or alloy, such gutter strips being secured
to the vertical member, A, by the rivets, E, which secure the lead, L; and in this case
the bar may be made without the shoulders, D, of other modifications.
In other modifications the bar may be of cast iron or other suitable metal; or it
may be of wood, in which last case the parts are made of such dimensions as to be of
sufficient strength.
A modification with a wooden bar, W, is shown in Figure, 6, the arrangement
being otherwise substantially the same as in the modification shown in Figure, 3, the
lead, L, however, being more conveniently secured by means of screws or nails.
The bar may be made of sheet metal, of a comparatively rigid kind such as zine, Z,
bended so as to present an outward form such as is shown in Figure, 7, which
resembles the form shown in Figures, 1, and 2. And in some cases wood, W, or other
suitable material may be combined with the sheet metal, Z, as shown in Figure, 8.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is. to be performed, 1 declare that what I
claim is:-
1. The combination of a glazing bar or astragal of any of the forms shown in the
accompanying drawings with the lead or soft metal or alloy which secures the glass
applied so as to cover the vertical member or top middle part of the bar substantially
as hereinbefore described.
2. The application of a soft metal or alloy such as lead for securing the glass, in a
manner to also cover the projecting or top part of the bar or astragal between the
plates of glass, substantially as herein before described.
3. The several modifications of glazing bar or astragal with accessory parts shown
in Figures, 1 to 8 of the accompanying drawings and herein before described.
4. The improved form of metal glazing bar or astragal shown in Figure, 3, of the
accompanying drawings and hereinbefore described.
5. The improved form of wooden glazing bar or astragal shown in Figure, 6, of the
accompanying drawings and herein before described.
Dated this Sixth day of November 1890.
EDMUND HUNT,
Applicant's Agent.