Improved Construction of Astragals and in Means for Securing Glass in Roofs of Structures generally.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Construction of Astragals and in Means for Securing
Glass in Roofs of Structures generally.
I, GEORGE FRANCIS WRIGHT, of 23, Paternoster Square, in the City of London,
Glass Roofing Manufacturer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to an improved construction of astragals and in means
for securing glass in roofs of structures generally.
For the purpose of this invention, I make the astragals of metal with one or
more grooves or channels to serve for escape of water. These astragals may be
of any length and straight or curved according to the desired shape of the roofing,
whether of a plain, angled, or of an arched character. These astragals are bored
or drilled at intervals for pegs or screws by which cover strips can be secured, said
strips having longitudinal recesses and projections which not only allow the rain-
water to flow down them but the edges to bear upon the glass roofing with or
without packing strips which when fitted prevent beating rains from passing
under them, as a rule however, should any rain beat under the edges of the cover
it will collect in the grooves or channels of the astragals and flow down to the
eaves gutter or its equivalent.
By this invention, particularly if the astragals be braced by ties for distancing
them, or be set on cross bearers, a roof of great strength can be erected, and in
the case of any glass becoming broken, any section of the cover strips can be
temporarily removed to facilitate the fitting in of fresh panes, no putty being
necessary.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said George Francis Wright.
Improved Construction of Astragals and in Means for securing
Glass in Roofs of Structures generally.
1, GEORGE FRANCIS WRIGHT, of 23, Paternoster Square, in the City.of London,
Glass Roofing Manufacturer, do hereby declare the nature of this invention
Prise 8d

page_text: 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 an improved construction of astragals and in means
for securing glass in roofs of structures generally.
For the purpose of this invention, I make the astragals of wood or metal with
one or more grooves or channels to serve for escape of water. These astragals
may be of any length and straight or curved according to the desired shape of
the roofing, whether of a plain, an angled, or of an arched character. These
astragals may be bored or drilled at intervals for pegs, bolts, or screws by which
cover strips can be secured, or said cover strips as capping may be pinched under
the head of the astragal, said strips preferably having longitudinal recesses and
projections which not only allow the rainwater to flow down them but the edges
to bear upon the glass roofing with packing strips, say, asbestos which when
fitted prevent beating rains from passing under them, as a rule however, should
any rain beat under the edges of the cover it will collect in the grooves or
channels of the astragals and flow down to the eaves gutter or its equivalent.
By this invention, particularly if the astragals be braced by ties for distancing
them, or be set on cross bearers, a roof of great strength can be erected, and in
the case of any glass becoming broken, any section of the cover strips can be
temporarily removed to facilitate the fitting in of fresh panes, no putty being
necessary.
My invention is clearly represented on the annexed sheet of drawings.
Figure 1 perspective elevation of a portion of a glass roof with the astragal
capping secured by screw pins.
Figure 2 similar elevation with the capping pinched in against and under the
rounded edge of the mid-feather of the astragal.
Figure 3 similar elevation of an astragal with the mid-feather of angled sides
against and under which the capping is shown pinched.
Figure 4 similar elevation but of the ridge astragal, the mid-feather of which
is of diamond or lozenge shape in cross section and having the capping pinched
under the same as a means of fixing it from both sides of the ridge.
Figure 5 represents the lower end of an astragal affixed to a trough or channel
in which the condensed water of a close fitting roof can be collected and be led
away in any convenient manner.
The astragal is preferably of metal such as is necessary for glass roofs of rail-
way stations, entrance halls, or passages of buildings, or the covered ways leading
to back premises, or the like. This astragal consists of a mid-feather A of a
height extending above the level of the glass B. The lower part has a couple
of wings C, C, bent upwardly where they serve as bearers for the glass B, the
spaces D, D, between the mid-feather A and the bearing edges of the wings C, C,
are for collecting rainwater that may beat under the capping E during heavy
wind storms.
F, F, are grooves of a rib G at the lower edges of the astragal for collecting
the condensation of moisture from inside the roofing which by stopping the rib G
at H, as indicated at Figure 5, can trickle into the eaves gutter I and be led to
any convenient down pipe. This trough or eaves gutter may be part of "the
plate as of a conservatory or greenhouse and to which the astragal can be
secured by clips such as I show at J. This trough or eaves gutter I is preferably
independent of the usual outside eaves gutter or water channel.
"
The capping E of lead or, say, of copper, or of zinc, tin, or other material is
formed by the rolling process to the required shape to sit over or upon the mid-
feather of the astragal or ridge," and can be fixed by screw bolts or pins, as at
Figure 1, or by pinching the sides of the "roll" against the head of the mid-
feather A, the lips K, K, of the capping E preferably ribbed, as at Figures 1, 3,
and 4, serving to lie upon the glass B by a kind of springiness imparted to them
from the rolling operation of the capping E.

page_text: The edges of the wings C, C, may be recessed for holding lead C¹ or other
soft packing, as at Figures 1 and 3, or narrow strips of lead C may be bent over
the edges of the wings C, C, as at Figure 4, for that purpose.
.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
―:
The improved construction of roof astragals consisting of mid-feather A, side
wings C, C, supporting the glass B and forming water channels D, grooves F, F,
of lower rib G, capping E with lips K, K, for bearing on glass B, as represented.
T
101
1
1000
+44
1030.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said George Francis Wright.