Improvements in the Construction of Glass Roofing.
Year: 1890

page_text: Date of Application, 11th Feb.. 1890
Complete Specification Left, 11.h Nov., 1890-Accepted, 31st Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Glass Roofing.
I, JOHN EDGCUMBE RENDLE, of 49 Gresham House, Old Broad Street, in the
City of London, Engineer, do hereby declare the nature of this invention to be as
follows:-
The invention consists of improvements in the construction of glass roofs for
various structures such as railway stations, goods sheds, baths, covered ways,
verandahs, greenhouses, carriage yards, warehouses, billiard rooms &c. &c.
By this improved construction I obviate the use of cement, putty, india-rubber,
felt, cord, tar, paint, &c. &c. usually employed to fix the glass in position and to
keep out the weather.
According to my present invention I place the glass on purlins about 2 feet
6 inches to 3 feet apart.
The upper portion of the glass I fix into wood grooved out to receive it. The
lower portion of the glass I secure by means of metal hooks, preferably of galvanized
iron, on either side of the vertical edges of the glass, and varying from 1 to 2 inches
in width.
These hooks or clips I secure to the back of the purlins by means of screws or
nails.
Between the vertical edges of the glass I insert a strip of thin lead or other
metal of I section, the edges of the glass being placed in the spaces on each side
of the cross bar connecting the parallel sides of such lead or other metal strip. To
effect this the two halves of one side of the I strip are folded against each other
in a line with the cross bar or to any suitable angle and when the glass is placed in
position on the lower side of such I strip, the two parts of the upper side are then
pressed tightly down on to the glass.
The next pane of glass rests on the purlin and extends about 1 inches under-
neath the clips, thus making a good lap, the lower portion being secured by hooks
as above described. The ends or hips of the roof I finish off by means of a
channelled or grooved wooden bar to receive the edge of the glass such bar being
covered with flashing.
Dated February 11th 1890.
COMPLETE SPECIFICATION.
Improvements in the Construction of Glass Roofing.
I JOHN EDGCUMBE RENDLE of 49 Gresham House Old Broad Street in the
City of London Engineer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The invention consists of improvements in the construction of glass roofs for
various structures such as railway stations, goods sheds, baths, covered ways,
verandahs, greenhouses, carriage yards, warehouses, billiard rooms &c. &c.
By this improved construction I obviate the use of cement, putty, india-rubber,
felt, cord, tar paint &c. &c. usually employed to fix the glass in position and to
keep out the weather.
According to my present invention I place the glass on purlins about two feet
six inches to three feet apart.
The upper portion of the glass I fix into wood grooved out to receive it. The
[Price 6d.1

page_text: .
lower portion of the glass I secure by means of metal hooks preferably of galvanized
iron, on either side of the vertical edges of the glass and varying from one to two
inches in width.
These hooks or clips I secure to the back of the purlins by means of screws or
nails.
Between the vertical edges of the glass I insert a strip of thin lead or other
metal of I section the edges of the glass being placed in the spaces on each side
of the cross bar connecting the parallel sides of such lead or other metal strip. To
effect this the two halves of one side of the I strip are folded against each other in
a line with the cross bar or to any suitable angle and when the glass is placed in
position on the lower side of such I strip, the two parts of the upper side are then
pressed tightly down on to the glass.
The next pane of glass rest on the purlin and extends about one and a half
inches underneath the clips thus making a good lap the lower portion being secured
by hooks as above described. The ends or hips of the roof I finish off by means of
a channelled or grooved wooden bar to receive the edge of the glass such bar being
covered with flashing.
DESCRIPTION OF DRAWINGS.
Figure 1. In this Patent I secure the glass by means of clips fixed to purlins
and between the edges of the glass I insert a metal bar of H section in lead, zinc,
copper, &c. as required but lead, I consider the best.
"A." is the metal bar-between the edges of the glass which rests on the top
of the next one below-if there is more than one row of glass.
"B" is the metal hook, which is fixed to the back of the purlin-by means
of a screw D. The hooks can be made in any metal-but galvanized iron is
preferable.
"C." are holes in the metal hooks, to allow the escape of any water, or dirt that
may accumulate.
D." is a screw for securing the metal hooks-one or more being required for
this purpose according to the weight of the glass.
"E." is the purlin on which the glass rests-these purlins can be strengthened by
means of angle iron or other iron.
Figure II. simply shews the plan of finishing off by means of flashing over the
ridge F-but I do not restrict myself to this method alone-as it can be done in
various ways.
"G." At the upper panes of the glass-as will be seen by the drawing---a
groove is ploughed out of the wood-to receive the upper edge of the glass.
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 :
I. I claim that the nature of my invention is quite original.
II. It obviates the use of all materials for securing the glass, such as putty-
cement india rubber-cord &c.
III. As only glass and metal are exposed to the weather, it is perfectly
indestructible.
IV. Not being firmly cemented, puttied, &c., it allows full play for the glass-in
case of expansion, or contraction of the frames (wood or iron) on which the glazing
rests.
V. By the construction of the glazing-all condensation on the under side of
the glass is carried off, to the upper side of the pane of glass below-and so off
the roof.
Dated November 11th 1890.
J. E. KENDLE,
Per C. Sewell.