Improvements in the Means or Method of Fixing and Making Secure Sheets of Glass, Zinc, Slate, or other suitable Material Employed in Covering the Roofs, Flats, or Sides of Railway Stations; Greenhouses, or other Structures or Places where Adaptable.
Year: 1887

page_text: Date of Application, 12th Oct., 1887
Complete Specification Left, 12th July, 1888
Complete Specification Accepted, 17th Aug., 1888
Improvements in the Means or Method of Fixing and Making Secure
Sheets of Glass, Zinc, Slate, or other suitable Material Employed
in Covering the Roofs, Flats, or Sides of Railway Stations;
Greenhouses, or other Structures or Places where Adaptable.
I, THOMAS WILLIAM HELLIWELL, of Brighouse, Yorkshire, Civil Engineer do
hereby declare the nature of this invention to be as follows:-
This invention has reference to a prior patent granted to me on the 8th of Jun
A.D. 1886, No. 7666, which consisted in the employment of a solid metal bar or
astragal, composed of a vertical central rib rising up above a horizontal bar provided
with two channels on each side of the vertical rib.
It is now my intention to construct a glazing bar or astragal where the vertical rib
is below the horizontal rib, somewhat in the form of a letter T, but made with three
channels in the horizontal part, one in the centre thereof and one on each side thereof.
The vertical edges of the sheets of glass rest upon the opposite edges of the central
channel; but above or clear of the outer lip or outer edges of the two outside
channels, and in order to secure the sheets of glass or other material in position, I
place a cap over the adjoining edges of the sheets kept down by a set screw,
pierces the cap and passes through the space between the adjoining edges of the
sheets and into a screwed hole in the bottom of the central channel of the said bar,
whereby the sheets of glass or other material are held in position whilst the several
channels receive and collect the condensed or other water from the sheets of glass,
which is afterwards conveyed away by any suitable arrangement of pipes.
which
Instead of the T-headed bar being made with three channels, it may be made with
four or other suitable number; and instead of having a central channel as above
described, the central part may be solid, having channels on each side thereof, and
into which central part the set screw is introduced through the cap and into a hole
made in the solid central part of the T.headed bar or astragal.
Doted this 11th day of October 1887.

page_text: Improvements in the Means or Method of Fixing and Making Secure
Sheets of Glass, Zinc, Slate, or other suitable Material Employed
in Covering the Roofs, Flats, or Sides, of Railway Stations,
Greenhouses, or other Structures or Places where Adaptable.
I, THOMAS WILLIAM HELLIWELL, of Brighouse, Yorkshire, Civil 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 :-
In a prior Patent granted to me on the 8th of June A.D. 1886, No. 7666, which
consisted in the employment of a solid metal bar, composed of a vertical central rib
rising up above a horizontal bar provided with two channels on each side of the
vertical rib, which vertical rib was formed above the horizontal channelled part.
It is now my intention to construct a glazing bar where the vertical rib is below
the horizontal channelled part, somewhat in the form of a letter T, but made with
three channels in the horizontal part, one in the centre thereof and one on each side
thereof. The vertical edges of the sheets of glass rest upon the two ridges or
shoulders which form the central channel; and preferably the said glass is above
or clear of the outer ridges or shoulders of the outside channels, but not necessarily
so, and in order to secure the sheets of glass or other material in position, I place a
cap over the adjoining edges of the sheets, kept down by a set screw or other suitable
means, which screw passes through the space between the adjoining edges of the
sheets and into a hole in the bottom of the central channel of the said bar, whereby
the sheets of glass or other material are held in position whilst the several channels
receive and collect the condensed or other water which is afterwards conveyed away
by any suitable means. Instead of the T headed bar being made with three
channels, the said bar may be made with four or other suitable number, and instead
of having a central channel as above described, the central part may be solid. The
above channels or parts of them (formed on the horizontal part) may be lined or
covered with zinc, lead, tin, copper, or other suitable material.
In order that my invention may be more clearly understood, I herein make reference
to the accompanying sheet of drawings, wherein Fig. 1 is sectional elevation of my
improved glazing bar. a represents the vertical rib made with a horizontal part
having three channels b, c, and d. The sheets of glass or other material are represented
ate and they rest upon the inner ridges or shoulders f, but preferably clear of the
outer ridges or shoulders of the two outside channels b and d. In order to secure the
glass and keep it in position I employ a cap g kept down and made fast by set screws
or other device h which enter into holes made in the solid part of the bar. Instead
of the horizontal part of the glazing bar being made with three channels as shewn in
Fig. 1, such bar may be made with four or other suitable number of channels, and

page_text: instead of having a central channel as already shewn and described, the central
portion of the horizontal part of the bar may be solid and project upwards as shewn
at jin Fig. 2, having channels on each side, and into this central solid part, the set
screw or other device h is made fast to hold the cap upon the glass.
The channels or parts of them may be covered or lined with zinc, lead, copper, tin,
or other suitable material, as indicated by dark lines in the drawings.
Although I have shewn and described the application of my improved channelled
bar as being applicable for glazing, such channelled bar being of exceptional strength
for its weight, may be used for other purposes.
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 :-
Firstly. A channellel bar or bars made substantially as shown in Figs. 1 and 2 for
purposes as set forth.
Secondly. A glazing bar such as shewn in Figs. 1 and 2 in combination with a cap
for keeping sheets of glass or other material in position, substantially as described.
Dated this 11th day of Jul, 1000
TASKER & CROSSLEY,
Halifax, Agents..