provements in Glazing for Roofs and the like Structural Work.
Year: 1899

page_text: PROVISIONAL SPECIFICATION
Improvements in Glazing for Roofs and the like Structural Work.
I, WILLIAM LAWSON, of 15, Posterngate, Hull, in the County of York, Plumber,
do hereby declare the nature of this invention to be as follows:-
This invention relates to glazing for various kinds of roofs, skylights and
the like constructions, and has a practical application for purposes where over-
head glass is used and is designed to effect certain improvements in the means
employed to receive and secure the glass.
Hitherto the means sometimes employed for this purpose have been so devised
that when the glass is placed therein a flat joint is formed which facilitates the
water to enter same by capillary attraction. Furthermore, provision is not
made for free ventilation when required.
The object of my invention is to obviate these defects by making simple pro-
vision for carrying off any condensed moisture from the under side of the glass,
and to make provision so that the capillary attraction for the water on the top
side of the glass is reduced to a minimum thereby providing against water
oozing through the joint from the top or outside surface of the glass. A further
advantage incidental to my invention is that a free ventilation is provided where
it is thought to be necessary.
In carrying my invention into effect I provide a metal cover preferably of
lead for the glazing bar the special construction of which effects the object in
view as hereinafter described.
By this construction the glass is fitted between two ledges of the said cover
which form a continuous groove or recess running along the glazing bar the
But in order to prevent
edge of the glass being sandwiched in between them.
the rain water falling upon the glass outside from leaking through and for
drawing off from the under side of the glass all accumulation of moisture both
ledges are provided with or formed into corrugations or serrations the ribs or
edges of which afford the surface contact with the glass. In this way a series
of channels are formed on both sides of the glass, but in order to fully effect the
object in view, the corrugations or serrations and consequently the channels so
formed between them are set anglewise to the run of the glazing bar, the angle
of the channels on the upper side of the glass being such that water on the
outside surface would have to travel uphill between the corrugations to get into
the joint, the angle of the said channels on the under side of the glass being such
as to facilitate the inward flow of moisture condensed thereon at the back of
A main channel is provided following
the groove or recess in the lead cover.
the run of the glazing bar with a suitable outlet at its lower end. If ventila-
tion is required along the glazing bars the inclined channels on the upper side
of the glass are carried through to communicate with the main channel, that

page_text: is to say that the corrugations in the upper ledge can be made either with or
without a continuous inner bead.
Date : 01
С T
1000
Improvements in Glazing for Roofs and the like Structural Work.
I, WILLIAM LAWSON, of 15, Posterngate, Hull, in the County of York, Plumber,
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:-
This invention relates to glazing for various kinds of roofs, skylights and
the like constructions, and has a practical application for purposes where over
head glass is used and is designed to effect certain improvements in the means
employed to receive and secure the glass.
Hitherto the means sometimes employed for this purpose have been so devised
that when the glass is placed therein a flat joint is formed which facilitates the
water entering same by capillary attraction. Furthermore provision is not
made for free ventilation when required.
But in order that my invention may be clearly understood and readily carried
into effect, I will now proceed to describe the same with reference to the annexed
sheet of drawings.
Figs. 1, 2, 3 and 4 each represents in cross section a convenient modification.
Figs. 5 and 6 each represents a plan of a section of the glazing bar and cap
respectively. Fig. 7 represents a side or longitudinal elevation corresponding
to Figs. 1 and 2. A is the supporting or glazing bar provided with or formed
into corrugations or serrations B; the ridges or edges of which afford the sur-
face contact with the glass; the said corrugations or serrations, and conse-
quently the channels so formed between them being set angle-wise with the run
of the glazing bar, preferably in the downward direction to facilitate the flow
of water, as shown on Fig. 5, a continuous main or collecting channel C, with
or without a continuous central ridge or rib, also being provided or formed,
following the run of the glazing bar, and connected with the channels between
the corrugations or serrations B.
In a modified form the flange of the main bar may be similarly formed with-
out a separate supporting or glazing bar.
D represents forms of covers or cappings provided with or formed into cor-
rugations or serrations E, the ridges or edges of which afford the surface contact
with the glass; the said corrugations or serrations, and consequently the channels
so formed being set angle-wise against the run of the glazing bar, and prefer-
ably in the upward direction to obstruct the inflow of water. Where free venti-
lation is not required as shewn in Figs. 1, 2, 3 and 4, a continuous strip of soft
packing, or an inner ridge or bead F, following the run of the glazing bar, may
also be provided, forming a surface contact with the glass. Where free ventila-
tion is required this bead or packing is dispensed with, or the channels between
the ridges E extend into the space formed between the support and the cover
as a means of communication from the outside.
The above referred to supporting bars and cappings may be combined in my

page_text: ystem of glazing, either with or without a connecting rib, preferably as snow
n Figs. 1, 2, 3, or 4.
The object of my invention is to make ample provision for carrying off any
accumulation of moisture from the underside of the glass; to prevent any
water which may fall upon the glass or capping outside from leaking through,
and also to make provision so that the capillary attraction for any water between
the top side of the glass and the capping may be reduced to a minimum.
further advantage incidental to my invention is that a free ventilation may be
provided where it is thought to be necessary.
A
The object of my invention may be accomplished by using a main bar such
as tees, angles or crosses in metal, or wood bars, with or without rebates; or a
supporting or glazing bar, of a metallic or other like substance (preferably of
lead); and in combination with either form of bar, a cover or capping of a
metallic or other like substance (preferably of lead). By this construction
the glass is fitted between two ledges which form a continuous groove or recess
running along the main bar, the edge of the glass being sandwiched in between
them.
In a modified form the main bar may be dispensed with by making the sup-
ports and covers strong enough in themselves. In cases where the cap is not
essential to the application of my invention, the glass is simply laid upon the
ridges B and secured by any suitable means.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The construction in which glazed roofing is sandwiched edgewise between
a glazing bar such as A and a cap or cover such as D), and in contact with ridges
forming a series of channels, preferably set angle-wise to the run of the glazing
bar, all combined and, arranged substantially as and for the purpose herein before
described and illustrated by way of example in various modifications in the
O several figures of the accompanying drawing.
2. The construction of the kind set forth in the preceding claim in which the
glazed roofing is laid upon a glazing bar such as A and in contact with ridges
thereon forming a series of channels preferably set angle-wise to the run of the
glazing bar and communicating with a collecting channel C substantially as
5 and for the purpose hereinbefore described with reference to the accompanying
drawing.
T JX.
1000
Dated this 15th day of March 1000
G. J. OLARKSON,
Chartered Patent Agent, Stockton-on-Tees, and Hull,
Agent for the Applicant.