IMPROVEMENTS IN GLAZED STRUCTURES FOR HORTICUL TURAL AND OTHER PURPOSES
Year: 1885

page_text: We JOHN EDGCUMBE RENDLE and FRANK BULLEN RENDLE both of Victoria
Street in the City of Westminster Horticultural Engineers do hereby declare the
nature of our invention for "IMPROVEMENTS IN GLAZED STRUCTURES FOR HORTICUL
TURAL AND OTHER PURPOSES" to be as follows:-
In the specification of a former Patent granted to us N° 1372 in the year 1883
we described various ways of forming astragals from sheet metal for supporting
the side edges of sheets of glass used in glazing.
The object of our present invention is to provide a ready means of securing
metal astragals such as are therein described or other similar metal astragals to the
purlins of the structure to be glazed. For this purpose we secure to the purlins at
the points where the metal astragals are to be attached to them metallic or other
shoes into which the upper and lower ends of the astragals which are to pass
respectively upwards and downwards away from the purlin can be inserted and
held and we so form these shoes that the lower end of the astragal which passes
upwards from the purlin is held at a higher level than the upper end of the
astragal which passes downwards from the purlin and so that any water running
down the interior channel of the upper astragal or their exterior gutters into the
shoe which holds its lower end may be conducted through the shoe and into the
upper end of the trough or hollow of the lower astragal and thereby be allowed to
flow away freely. We also form the shoes which hold the lower ends of the
astragals each with a rib standing up from it to come between the side edges of the
sheets of glass which are held by such astragals and form distance pieces between
them. We also form such ribs with projections standing out sidewise from them
to form stops for the bottom edges of the sheets of glass and metal cap of astragals
to rest against to prevent their slipping downwards.
Preferably we form the shoes for holding the upper ends of the astragals in
separate pieces from the shoes for holding their lower ends-the two shoes might
however if preferred be made together in one piece.
Figure 1 of the drawing annexed shows a perspective view of a pair of
shoes A. B formed as above described and secured to a short length of a wooden
purlin. Figure 2 is an end view and Figure 3 a plan view of the shoe A for

page_text: holding the upper end of the astragal which is to pass downwards from the purlin.
Figure 4 is a lower end view. Figure 5 an upper end view and Figure 6 a plan
view of the shoe B for holding the lower end of the astragal which slopes upwards
from the purlin.
It will be seen that the bottom plate of the shoe A is formed with an extension
which passes below the bottom plate of the shoe B and is secured by screws to the
purlin and that the shoe B is formed with side projections by which it is secured
by screws to the purlin.
C is a trough shaped spout projecting from the lower end of the shoe B, it enters
the hollow trough of the metal astragal which is below it so that any water passing
from one astragal into the shoe B passes by this spout from the shoe into the other
astragal and so can run off freely. E is the rib standing up from the top of the
shoe Band F the sideway projections standing out from this rib to form stops to
prevent the sheets of glass and the metal caps of the astragals from slipping
downwards.
Both shoes are formed as open troughs to receive the ends of the astragals and
projections standing inwards from the sides of the troughs come above the side
Hanges or outer troughs of the astragals and so hold down the ends of the astragals
securely.
The perspective view Figure 7 shows portions of the metal astragals inserted
into the shoes and portions of the sheets of glass held down to the astragals by
their caps.
At the top of the roof the shoe A will only be needed.
At the bottom of the roof the lower end of the lowest astragal is held in a trough
the lower end of which is closed by an end piece D as shown at Figures 8 and 9.
These figures show respectively an end view and plan view of the trough. The
end piece serves as a stop to prevent the astragal and its metal cap and the sheets
of glass held by them from slipping downwards. An opening is also formed through
its lower part to allow water to run off.

page_text: Improvements in Glazed Structures for Horticultural and other
Purposes.
We JOHN EDGCUMBE RENDLE and FRANK BULLEN RENDLE both of Victoria
Street in the City of Westminster Horticultural Engineers, 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 the Specification of a former Patent granted to us N° 1372 in the year 1883
we described various ways of forming astragals from sheet metal for supporting
the side edges of sheets of glass used in glazing.
l
The object of our present invention is to provide a ready means of securing
metal astragals such as are therein described or other similar metal astragals to the
purlins of the structure to be glazed. For this purpose we secure to the purlins at
the points where the metal astragals are to be attached to them metallic or other
shoes into which the upper and lower ends of the astragals which are to pass
respectively upwards and downwards away from the purlin can be inserted and
held and we so form these shoes that the lower end of the astragal which passes
upwards from the purlin is held at a higher level than the upper end of the astragal
which passes downwards from the purlin and so that any water running down the
interior channel of the upper astragal or their exterior gutters into the shoe which
holds its lower end may be conducted through the shoe and into the upper end of
the trough or hollow of the lower astragal and thereby be allowed to flow away
freely-We also form the shoes which hold the lower ends of the astragals each
with a rib standing up from it to come between the side edges of the sheets of
glass which are held by such astragals and form distance pieces between them. We
also form such ribs with projections standing out sidewise from them to form stops
for the bottom edges of the sheets of glass and metal cap of astragals to rest against
to prevent their slipping downwards.
Preferably we form the shoes for holding the upper ends of the astragals in
separate pieces from the shoes for holding their lower ends, the two shoes might
however if preferred be made together in one piece.
Figure 1 of the drawing annexed shows a perspective view of a pair of shoes A. B.
formed as above described and secured to a short- length of a wooden purlin.
Figure 2 is an end view and Figure 3 a plan view of the shoe A for holding the
upper end of the astragal which is to pass downwards from the purlin. Figure 4
is a lower end view-Figure 5 an upper end view and Figure 6 a plan view of the
shoe B for holding the lower end of the astragal which slopes upwards from the
purlin.
It will be seen that the bottom plate of the shoe A is formed with an extension
which passes below the bottom plate of the shoe B and is secured by screws to the
purlin and that the shoe B is formed with side projections by which it is secured
by screws to the purlin.
C is a trough shape spout projecting from the lower end of the shoe B―it enters
the hollow trough of the metal astragal which is below it so that any water passing

page_text: from one astragal into the shoe B passes by this spout from the shoe into the other
astragal and so can run off freely. E is the rib standing up from the top of the
shoe B and F the sideway projections standing out from this rib to form stops to
prevent the sheets of glass and the metal caps of the astragals from slipping
downwards.
Both shoes are formed as open troughs to receive the ends of the astragals and
projections standing inwards from the sides of the troughs come above the side
flanges or outer troughs of the astragals and so hold down the ends of the astragals
securely.
The perspective view Figure 7 shows portions of the metal astragals inserted
into the shoes and portions of the sheets of glass held down to the astragals by
their caps.
At the top of the roof the shoe A will only be needed.
At the bottom of the roof the lower end of the lowest astragal is held in a trough
the lower end of which is closed by an end piece D as shown at Figures 8 and 9.
These figures shew respectively an end view and plan view of the trough. The
end piece serves as a stop to prevent the astragal and its metal cap and the sheets
of glass held by them from slipping downward-an opening is also formed through
its lower part to allow water to run off.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
1. The improvements in glazed structures for horticultural and other purposes
substantially as herein before described.
2. The construction of shoes for receiving the ends of metallic trough astragals
of glazed structures and for securing thein to the purlins in such a manner that the
lower end of the one astragal held in each shoe is at a higher level than the upper
end of the other astragal and in such manner that any water running down the
upper astragal is conducted into the upper end of the hollow interior of the lower
astragal through a channel which partly overlaps it substantially as described.
3. The combination of the shoe A and the shoe B formed with projecting spout C
rib E and sideway projections F whether the shoes A and B be formed separately or
formed together in one piece substantially as herein-before described.
Dated this 10th day of December 1885.