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

page_text: Date of Application, 29th July, 1890
Complete Specification Left, 8th Nov., 1850-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, lo hereby declare the nature of this invention to
be as follows, that is to say :-
My said invention has for its object the application of improved forms of glazing
bars or astragals for roof lights or windows and the combination therewith of lead or
other suitable metal or alloy for securing or covering the edges of the glass supported
on such bars.
In carrying out my invention according to one modification I have a metal bar or
astragal rolled or otherwise formed of a section partly like an inverted channel with a
rib along the middle of the top, and with the bottom edges curved to form gutters.
The corners serve as shoulders to support the edges of the glass but the gutters are
sufficiently far below to admit of their being easily painted or cleaned.
According to a second modification the bar or astragal consists of a vertical member
made with ribs on the sides to support the edges of the glass, and having flanges at
the bottom these flanges being curved to serve as gutters and being by preference
sufficiently below the ribs to admit of easy painting or cleaning.
I prefer to cover the upper part of the bar or astragal with sheet lead fixed
by riveting or otherwise, and extending down to the glass-supporting shoulders or
ribs its marginal parts being doubled up and closed down on the glass after the latter
has been placed in position. Or instead of lead or other sheet metal or alloy being
applied as described, capping strips of zinc or other suitable metal or alloy may
be used to hold down the glass, such capping strips being secured to the upper
part of the bar or astragal by screws or otherwise.
Dated this Twenty-eighth day of July 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 the application of improved forms of glazing
bars or astragals for roof lights or windows, and the combination therewith of lead or
other suitable metal or alloy for securing or covering the edges of the glass supported
on such bars.
I hereunto append a sheet of explanatory drawings to be hereinafter referred to in
describing my improvements, the figures in 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 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 have a metel bar or astragal, H, rolled or otherwise formed of a section partly like
an inverted channel, with a rib, A, along the middle of the top, and with the bottom

page_text: edges curved outwards to form gutters, C. The corners, D, serve as shoulders to
support the edges of the glass, G, but the gutters, C, are sufficiently far below to
admit of their being easily painted or cleaned. I prefer to secure the glass, G, as
shown, by moans of lead, L, applied in the manner described in my Patent Specification
No. 9422 of 1890."
Or instead of lead or other soft sheet metal or alloy being applied as shown in
Figure, 1, capping strips, S. of zinc or other comparatively rigid metal or alloy may
be used as shown in Figures, 2, and, 3, to hold down the glass, G. such capping
strips, S, being secured to the upper part of the bar or astragal by screws or other-
wise. As shown in Figure, 2, screwed studs, U, are formed on or fixed to the top
rib, A, and nuts, V, secure the capping strips, S, to the studs. As shown in Figure, 3,
the studs, U, are fixed in the top of the channel-section bar, H, the top rib, A, being
dispensed with. If desired the channel-section bar, HI, may he made concave between
and partly under the glass, G, to form an inner gutter.
According to a second modification of the bar or astragal, and shown in Figure, 4,
it is rolled or formed so as to consist of a vertical member or web; A, made with
ribs, R, on the sides to support the edges of the glass, G, and having flanges, Q, at
the bottom, these flanges being curved to form gutters, C, by preference sufficiently
below the ribs, R, to admit of easy painting or cleaning. The glass, G, may he
secured by means of lead, L, as shown in Figure, 4, or by means of a capping strip, S,
of zinc as shown in Figure, 5.
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. The application, for the astragals of roof-lights and windows, of bars of the
forms shown in Figures, 1, 2, and, 3, of the accompanying drawings, and mainly
of inverted channel section, substantially as hereinbefore described.
2. The application, for the astragals of roof lights and windows, of bars of the
forms shown in Figures, 4, and, 5, of the accompanying drawings and hereinbefore
described.
Dated this Seventh day of November 1890
EDMUND HUNT,
Applicant's Agent.