Improvements in Pivotted Reversible Sliding Sashes for Windows.
Year: 1899

page_text: Date of Application, 31st May, 1899
2000
PROVISIONAL SPECIFICATION.
Improvements in Pivotted Reversible Sliding Sashes for Windows.
"
CHARLES WALL, Builder, Globe Works, Grays, Essex, ALFRED ROBERTS BALSON,
Carpenter Foreman, Heavitree," Chadwell Road, Grays, Essex, do hereby
declare the nature of this invention to be as follows:-
In windows in which the stiles of the top and bottom sashes are divided ver-
tically into two portions (hereinafter called respectively the hanging stile and the
glazed stile) for the purpose of reversing the sash for cleaning and repairing, I
make the joint between the two portions as follows. I make a shallow sunk panel
in the hanging stile and a proportionately raised panel on the glazed stile to fit
same, and I rim a V or bead joint at each side of the sash to break joint between
the two portions of the stile. Down the centre of the sunk panel on the hanging
stile I run a groove five eighths of an inch wide about, and about one eighth of an
inch deep, to allow for the projection of the tenons of the rails in the glazed sash,
when the glazed stile shrinks, thus always assuring a weather tight joint.
I let into the hanging stile on each side of the window, on the face abutting the
glazed stile, and about in the centre of same, a pivot, consisting simply of a plate
and spindle. This pivot revolves in a plate (let into the glazed stile) with an
elongated slot in same, the width of the pivot and with semicircular ends. From
the centre of this slot is a clearway, the width of the pivot, out to the side of the
plate. The glazed stile is grooved to a little over the depth of the pivot in the
slot of this plate, and the groove is carried through the clearway, and turning at
right angles is carried to the bottom of the plate where it branches into two grooves,
one of which, being in a direct line with the original groove, continues for only
about half an inch beyond the junction and terminates with a semicircular end;
the other branch curves away from the original groove and is carried to the bottom
of the stile, without showing at all on the face of the sash.
The following is the action of this form of pivot and slotted plate. While the
glazed sash is hanging vertically in its position between the hanging stiles, the
pivot is in a position slightly above the centre of the sash, thus preventing
the sash from being turned without a distinct effort on the part of the operator.
When the sash is reversed for cleaning purposes the pivot sliding to the other end
of the slot prevents the window from swinging back into its vertical position,
without again an effort on the part of the operator.
The clearway at the side of the socket plate and the groove in the glazed stile
enable the sash to be readily and safely removed from the frame, without any risk
of the sash slipping from the hands of the operator into the street, and also without
using any tools.
The short groove, which terminates a short distance below the plate in the glazed
stile, is intended to prevent any accident if the window should be reversed the

page_text: Where the width of the glazed stile is sufficient to allow of it, I use a modifica-
tion of the centre plate in the glazed stile which receives the pivot, in that I con-
tinue, the plate as a margin round the short groove, in the glazed stile, before
mentioned. In order to hold the two portions of the stile together, I make an
arrangement consisting of a key shaped catch passing through the glazed stile,
where it is held in position by a notched plate fixed on the ovolo molding of the
glazed sash, which plate allows the catch to be drawn back into the glazed stile
sufficiently to let the sash swing on its pivots, but prevents it being drawn com-
pletely away without removing the plate. The catch passes through a plate in
the hanging stile and catches behind same. This plate has a bevelled surface at
the back so that the key shaped catch may bind as it is turned, and so draw the
two portions of the stile tightly together. One of these key and socket arrange-
ments is required above the pivot and one below the pivot at each side of the
window. In order to release the catch, only a quarter turn is necessary.
To hold the hanging stile in position when the glazed sash is completely
removed, I make a socket with a sliding arm in same." This arm has a catch at
one end and a boss at the other end, the boss is to prevent it being drawn com-
pletely from the socket. The sockets I let into each pulley stile just above the
level of the meeting rails, one on each side of the parting bead, for the top and
bottom sashes respectively. On the top of each hanging stile I provide a plate,
with a hole in same, to receive this sliding arm catch. These prevent the weights
from drawing up the hanging stiles when the sash is removed.
All the cleaning and removing of both the top and bottom sashes can be done
while standing on the floor of the room.
Referring to the accompanying drawing.
Fig. 1 is an elevation of the hanging stile showing the joint; the sunk panel :
the groove to allow for the projecting tenons-when the glazed stile shrinks, :
the pivote the plate behind which the key shaped catch grips, d; the socket in
the pulley stile e the sliding arm catch and the plate to receive this catch, g.
Fig. 2 shows the glazed sash; the raised panel h; the slotted plate i; the clear-
way in same: the groove 1, for removing the sash completely from the frame:
the short groove m, to prevent the sash slipping from the frame when reversed
the wrong way: the key shaped catch the notched plates o; the holes p, in the
glazed sash through which the key shaped catches » pass.
Fig. 3 is a larger drawing of the pivot c.
Fig.
is a larger drawing of the slotted plate i, to receive the pivot.
Fig. 5 is a modification of this slotted plate i, designed to form a margin to the
short groove m.
Fig. 6 is a larger drawing of the key shaped catch ».
Fig. 7 is a larger drawing of the notched plate o.
Fig. 8 is a larger drawing showing the bevelled back of the plate d.
Fig. 9 is a larger drawing of the socket e, and the sliding arm catch f.
Fig. 10 is a larger drawing of the plate g to receive the sliding arm catch f.
Dated this Thirtieth day of May 1899.
Improvements in Pivotted Reversible Sliding Sashes for Windows.
CHARLES WALL, Builder, Globe Works, Grays, Essex, ALFRED ROBERTS BALSON,
Carpenter Foreman, "Heavitree," Chadwell Road, Grays, Essex, do hereby

page_text: declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
In windows in which the stiles of the top and bottom sashes are divided, ver-
tically, into two portions, hereinafter called respectively the hanging stile and
the glazed stile, for the purpose of reversing the sash for cleaning and repairing.
I preferably make the joint between the two portions as follows. I form a shallow
sunk surface about three quarters of the width and the full length of the stile in
the hanging stile, and a proportionately raised surface on the glazed stile to fit
the same, and I rim a Vor bead joint at each side of the sash, to break joint
between the two portions.
Down the centre of the sunk surface in the hanging stile I run a groove about
fire-eighths of an inch wide, and about one eighth of an inch deep, to allow for
the projection of the tenons of the rails in the glazed sash, when the glazed stiles
shrink, thus always assuring a weather tight joint.
I let into the hanging stile, on each side of the window, on the face abutting
the glazed stile, and about the centre of the same, a pivot, consisting simply of a
plate and spindle. This pivot revolves in a plate, which is let into the glazed
stile, with an elongated slot in the same, the width of the pivot, and with semi-
circular ends. From the centre of this slot is cut a clearway, the width of the
pivot, out to the side of the plate. The glazed stile is grooved to a little over the
depth of the pivot, in the slot of this plate, and the groove is carried through
the clearway and turning at right angles, is carried to the bottom of the plate,
where it branches into two grooves, one of which being in a direct line with the
original groove, continues for only about half an inch beyond the junction, and
terminates with a semicircular end; the other branch curves away from the
original groove, and is carried down the centre of the stile to the bottom, without
showing at all on the face of the sash.
The following is the action of this form of pivot and slotted plate.
While the glazed sash is hanging vertically, in its position between the hanging
stiles, the pivot is in a position slightly above the centre of the sash, thus prevent-
ing the sash from being turned without a distinct effort on the part of the operator.
When the sash is reversed for cleaning purposes, the pivot, by sliding to the other
end of the slot, prevents the window from swinging back into its vertical position.
without again an effort on the part of the operator. The clearway, at the side of
the socket plate, and the groove in the glazed stile, enable the sash to be readily
and safely removed from the frame, without any risk of the sash slipping from
the hands of the operator into the street, and also without using any tools.
The short groove, which terminates a short distance below the plate in the
glazed stile, is intended to prevent any accident if the window should be reversed
the wrong way. Where the width of the glazed stile is sufficient to allow of it,
I use a modification of the centre plate, in the glazed stile, to receive the pivot,
in, that I continue the plate as a margin round the short groove in the glazed
stile before mentioned. In order to hold the two portions of the stile together,
I make an arrangement consisting of a key shaped catch, passing through the
glazed stile. It is held in position by a notched plate, fixed on the ovolo molding
of the glazed sash, which plate allows the end of the catch to be drawn back into
the glazed stile sufficient to let the sash swing on its pivots, but, by catching
against a shoulder on the key shaped catch, it prevents it being drawn completely
away without removing the plate. The catch passes through a socket plate, fixed
in the hanging stile, and catches behind the same. This socket plate, in the
hanging stile, has a bevelled surface at the back, so that the key shaped catch may.
bind as it is turned, and so draw the two portions of the stile tightly together.
One of these key and socket plate arrangements is required above the pivot, and
one below the pivot, at each side of the glazed sash. In order to release the catch
only a quarter turn is necessary.
To hold the hanging stile in position, when the glazed sash is completely

page_text: removed, I make and fix in the pulley stile a recessed socket, with a sliding arm
in same. This arm has a catch at one end, and a boss at the other end. The boss
is intended to prevent the arm from being drawn completely from the socket.
These sockets I let into each pulley stile, just above the level of the meeting
rails, one on each side of the parting bead, for the top and bottom sashes respec-
tively. On the top of each hanging stile I provide a plate, with a hole in same,
to receive this sliding arm catch. This arrangement prevents the sash weights from
drawing up the hanging stiles, when the glazed sash is removed. All cleaning
and removing, of both the top and bottom sashes, can be done while standing on
the floor of the room.
Referring to the drawing left with the Provisional Specification.
Fig. 1 is an isometrical drawing of the hanging stile, showing the joint between
that and the glazed stile the sunk surface a the groove b, to allow for the pro-
jecting tenons when the glazed stile shrinks; the pivote; the plate behind
which the key shaped catch grips: the socket e in the pulley stile; the sliding
arm catch f, and the plate g to receive this catch.
Fig. 2 shows the glazed sash; the raised surface ; the slotted centre plate i,
and the clearway in same; the groove 7, for removing the sash completely from
the frame the short groove m, to prevent the sash slipping from the frame when
reversed the wrong way: the key shaped catches n; the notched plates o, and the
holes in the glazed sash, through which the key shaped catches » pass.
Fig. 3 is a larger drawing of the pivot c.
Fig. 4 is a larger drawing of the slotted plate, which receives the pivot.
Fig. 5 is a modification of this slotted plate i, designed to form a margin to the
short groove m.
Fig. 6 is a larger drawing of the key shaped catch n.
Fig. 7 is a larger drawing of the notched plate o.
Fig. 8 is a larger drawing showing the bevelled back of the plate d.
Fig. 9 is a larger drawing of the socket e, and the sliding arm catch f.
Fig. 10 is a larger drawing of the plate g, to receive this sliding arm catch.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. The shallow groove b, to allow for the projection of the tenons, of the rails
in the glazed sash, when the glazed stile shrinks.
2. The slotted centre plate Fig. 4 which receives the pivot, together with the
modification of the same Fig. 5, enclosing the short groove m.
3. The long groove 7, which enables the glazed sash to be removed from between
the hanging stiles.
4. The short groove m, as a protection against accidents, should the sash be
reversed the wrong way.
5. The key shaped catch Fig. 6.
6. The plate with the bevelled surface at the back Fig. 8, behind which the key
shaped catch grips.
7. The arrangement consisting of a socket and sliding arm catch, and the plate
with a hole in the same to receive the catch, shown in Figs. and 10.
All substantially as described in this foregoing specification, and illustrated on
the drawing, left with the Provisional Specification.
Dated this Nineteenth day of February 1900.