IMPROVEMENTS IN GLAZING
Year: 1884

page_text: We FREDERICK WILLIAM PRIMROSE, and JOSEPH MELLOWES, both of Corporation
Street Sheffield, in the county of York Glass Merchants and Horticultural Builders
do hereby declare the nature of our said invention for IMPROVEMENTS IN GLAZING
to be as follows:-
Our invention relates to improvements in glazing, and refers more particularly
to the glazing of Horticultural Buildings, the roofs of Railway stations and similar
glazing; the object being to improve the appearance, to dispense with the use of
paint, putty and other perishable materials, and also to carry off the condensation
which forms on the inside of the glass.
It consists chiefly in the use of bars (to receive the glass) made of a preparation
of lead and tin, such material being found capable of resisting the action of the
weather, and much improving the general appearance of the glazing.
It consists secondly in the method of carrying off the condensation, that forms
upon the inside of the glass; for which purpose the wood purlins are provided with
longitudinal gutters having transverse grooves or gutters acting as outlets, and so
placed that the water from the inside of one row of panes will be ejected upon
the outside of the row of panes below, running from thence down to the spouting.
We support and strengthen the wood purlins when required by the addition of
metal bars, attached to, or inserted into the underside of the purlins.
In cases where it is necessary or preferred, the tin-lead bar is so constructed that
a metallic bar of more rigid material may be inserted so as to form a support to
the softer metal.
To receive and support the glass upon the end frames, a special configuration of
tin-lead bar is required to receive the edge of the pane in combination with a
flashing ridge to prevent the water getting to the wood work. Ventilation is
provided for when required by washers being placed upon the purlin under the tin-
led bar; if air tight glazing is required the tin-led bar is let into the wood purline.
To enable glazing of this description to support planks for cleaning, repairing or
similar purposes; iron brackets are secured to the rafters, sunk into the purlins
and the projecting end turned up and slotted to receive flat, angle, or T iron rods
upon which such planks may be laid; they may also be utilised as supports for
blind rollers.

page_text: COMPLETE SPECIFICATION.
We FREDERICK WILLIAM PRIMROSE and JOSEPH MELLOWES, both of Corporation
Street Sheffield in the County of York Glass Merchants and Horticultural Builders
do hereby declare the nature of our invention for IMPROVEMENTS IN 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 :-
Our invention relates to improvements in glazing, and more particularly to the
glazing of the roofs of Railway Stations, Horticultural Buildings and similar
glazing, the object being to dispense with the use of paint, putty, and other
perishable materials, also to carry off the inside moisture which is formed by
condensation and to improve the appearance.
It consists chiefly in the use of bars for connecting the panes of glass made of
a preparation of lead and tin, such material being found capablo of resisting the
action of the weather, and also of improving the appearance of the glazing.
It consists secondly, in the method of carrying off the condensation that forms
upon the inside surface of the glass, for which purpose the wood purlins are
provided with longitudinal gutters, having transverse grooves or channels acting
as outlets, and so placed that the water from one row of pane will be ejected upon
the outside of the row of panes below, running from them down to the spouting.
And in order that our invention may be clearly understood we annox a sheet of
drawings illustrating the same.
Figs 1 and 2, are cross sections of bars made from a preparation of lead and tin,
and used to support the edges of the glass.
Fig. 3, is a cross section of bar, strengthened by a bar of iron or other rigid
metal.
Fig. 4, is a cross section of a special bar to be attached to the end frames.
Fig. 5. is a section of a purlin, strengthend by a metallic bar; and also the
method of glazing.
A is the wood purlin, B is the longitudinal gutter to catch the condensed
moisture, which runs down the underside of the pane of glass C, the dotted line D
denotes the bottom of the transverse groove or channel, a suitable number opening
into the gutter B. The arrow shows where the water leaves the groove or channel
and falls on to the next pane of glass. E is the section of a metallic bar, to
strengthen the wood purlin.
F, is the top member of the composition bar as shown in Fig 1. and G is the lower
member of the saine bar.
H, is a metallic bracket or clip, one being placed at the bottom of each bar, so as
to prevent the panes of glass slipping out.
In cases where it is advisable, the tin-lead bar is so constructed that a metallic
bar of some more rigid metal may be inserted, so as to support the softer metal, as
shown in Fig. 3.
To receive and support the glass upon the end frames, we use a tin-lead bar of
special configuration, shown in Fig. 4, the opening I being to receive the glass, and
the upper part J, forming a flashing ridge, to prevent any water getting to the
woodwork.

page_text: Ventilation may be provided, by placing washers between the purlins and the
bars of tin-lead, while on the other land if the glazing is required to be airtight,
the bar is let into the purlin.
To enable glazing of this description to support planks for cleaning, repairing or
similar purposes, iron brackets (Fig. 6) are secured to the rafters, sunk into the
purlins and the projecting ends turned up and slotted to receive flat, angle or
Tiron rods upon which such planks may be luid.
The said brackets may also be utilised for supports for blind rollers.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, We declare that what
we claim is
1st In glazing as herein specified, the use of bars for connecting or supporting
the panes of glass, made from an alloy of lead and tin-as hereinbefore described.
2ud In glazing as herein specified, the use of purlins formed with a gutter and
outlets to carry of inside moisture, substantially as herein before described and
illustrated.
3rd The method of supporting planks or similar articles over the glass, by means
of metal brackets, in the manner as herein before described and illustrated.
ROBT F. DRURY,
Agent for the Applicants.