Improvements in and relating to Glazing Bars.
Year: 1898

page_text: Date of Application, 1st Feb., 1898-Accepted, 12th Mar., 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Glazing Bars.
I, WALTER CURBSTONE, of 16, Leegate Road, Heaton Moor, Stockport, near
Manchester, Glazing and Roofing 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 :-
The improvements relate to glazing bars, and have for object to effect the glazing
of roofs and the like by improved means hereinafter to be described.
"In order that the invention may be better understood, I will refer to the
accompanying sheet of drawings, wherein each of the figures represents a cross
section of glazing bar and astragal constructed and employed in accordance with
my improvements.
The same letters indicate corresponding parts wherever they occur.
To carry out my invention, and accomplish the object thereof, I roll or
otherwise form an iron or steel astragal a having an upper portion a' shouldered
out to a greater width than the part immediately below the same, and in some
cases as shown in Figs. 1, 2, 3, 4, 5, and 6,-having also a projection or rib a² at
the bottom, of dovetail or like form as shown, to effect a holding upon the wooden
or other bar b, or to support a channelled clip such as h. Fig. 5, or for like
purposes, such bar b or clip h being attached to the astragal a by sliding the
samme on to the projection a³ from one end thereof, as will be well understood, by
which means the use of screws or other similar means of connection is obviated.
Secured to the astragal a is a clothing of lead or soft metal forming the glazing
bar c, which clothing envelopes the astragal to a sufficient extent to form a lip
beneath the horizontal part a³, or other part, of such astragal, but may extend
entirely or almost entirely around the astragal.
The glazing bar c is formed with wings or projections c¹ which rest upon the
surface of the glass d and hold the same in position.
°
These wings c¹ form a part of the lead or soft metal clothing and project
therefrom in most cases just beneath the shouldered portion a¹ of the astragal,
but in such manner that the shoulders form a resistance to any upward pressure
exerted upon the wings c¹ by the glass: but as a variation the wings c¹ may
project from above the shoulders, as in Fig. 10, in which case the upward pressure
on such wings exerts a pull of the clothing against the shoulders, and is resisted
in similar manner; whereby the glass is prevented from bending the lead, and so
becoming loose, as is frequently the case with many glazing bars at present
employed.
The glazing bar may have suitable channels formed therein for the reception of
asbestos or other packing e, and condensation ducts g may also be attached in any
convenient manner.
Variations in detail may be made, such as in the precise form of the astragal and
glazing bar in cross section; the position of the wings c¹ in relation to the
clothing; the dimensions and the material of construction of the various parts,
without departing from the peculiar character of the invention.

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
1. In roof or like glazing, the combination of an astragal having a shouldered
upper portion, with a soft metal clothing provided with wings or projections
which form a resistance between the glass and the shoulders of the astragal, for
the purpose and in manner substantially as herein shown and described.
2. In roof or like glazing, the combination of an astragal having a shouldered
upper portion and a dovetailed or like projecting ridge on the under surface, with
a soft metal clothing provided with wings or projections which form a resistance
between the glass and the shoulders of the astragal, for the purpose and in
manner substantially as herein shown and described.
3. In roof or like glazing, an iron or steel astragal provided with a dovetailed or
like projecting ridge on its under surface, for the purpose and in manner
substantially as herein shown and described.
Dated this 31st day of January 1898
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.