Year: 1888

page_text: Date of Application, 19th Sept., 1888
Complete Specification Le t, 18th Dec., 1888
Complete Specification Accepted, 5th Feb., 1889
I, JOHN TWITCHIN, of 51. Victoria Road, Finsbury Park, in the County of
Middlesex House Decorator do hereby declare the nature of my said invention to be
as follows:
The object of my invention is to effect improvements in the method of and in means
and appliances for altering and adapting window sashes, so that they may be capable
not only of moving vertically in their frames, but also of opening inwards upon
vertical centres.
In carrying out my invention I fit hinges to the left hand stile of the upper and
lower sashes of an ordinary window. These hinges are permanently fitted to the
sash but are only temporarily attached to the frame when my improvements are being
utilised for cleaning or otherwise.
The hinges are usually recessed into the stile and rail of the sash, so as to lie flush
therewith, when the sash is in its normal sliding position. One of the flaps of each
hinge is securely screwed to the sash, the upper hinge being of an L form to strengthen
the connection between the stile and the upper bar. The adjoining flaps of the linges
are formed to receive a single screw for temporarily sustaining the sash. The lower
hinge is provided with a prong which enters a staple fixed to the frame.
The right hand side of the sash is fitted with a detached iron strap, to which the
sustaining cord is fastened, having a suitable snug attached to the strap, which enters
a corresponding recess in the sash stile and thereby sustains the sash when prepared
for vertical sliding. This iron strap has a hole bored through it, to receive a screw,
whereby the same is prevented from being drawn upwards by the weight, when
disengaged from the sash.
A portion of each inner bead and parting bead is made movable, the two ends of
such portions being dovetailed, and screws being provided for securing them in
position, when in their normal state.
All the screws (preferably) enter screw sockets, made of suitable metal, and the iron
work is preferably cast malleable.

page_text: When using my invention, as applied to an ordinary window, with upper and lower
sliding sashes, the lower parts of the inner and parting beads are removed. The
screws are then inserted in the binges and in the strap. The sash can then be opened
inwards, sustained by the hinges, for cleaning or otherwise.
The upper sash can be drawn down and treated in a similar manner.
The sashes can be fitted to open right or left-handed as required.
GEO. DOWNING,
8, Quality Court, London, W.C.,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Convertible Window Sashes.
I, JOHN TWITCHIN, of 51 Victoria Road, Finsbury Park in the County of
Middlesex, House Decorator, do hereby declare the nature of my said invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The object of my invention is to effect improvements in the method of, and in
means and appliances for altering and adapting window sashes so that they may be
capable, not only of moving vertically in their frames but also of opening inwards
upon vertical centres.
In carrying out my invention I fit hinges to the sashes for temporary use whereby
the sashes can be sustained upon such hinges and swing inwards, either to the right or
left as arranged.
The hinges and other fittings being formed of brass, or cast or malleable iron or
other suitable metal.
And in order that my said invention may be particularly described and ascertained
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts; and, in which drawings my invention is
shown applied to window sashes having the hinges fitted on the left hand side.
Fig. 1 is an elevation of a pair of convertible sashes. Fig. 2 is a view of the left
hand side of the frame, partly in section, the sashes being closed. Fig. 3 is a similar
view shewing the lower sash opened into the room, and the upper sash lowered down.
Fig. 4 is a perspective view showing the two sashes opened inwards, and Figs. 5 to 10
are detail views.
a a is the window frame. bb are the inner beads. c is the upper sash, and dis
the lower sash. c¹ is a combined bracket and hinge fitted to the upper sash, and d¹ is

page_text: 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 :-
1. The method of fitting sliding window sashes so as to render them convertible
by means of detachable hinges and sash lines, and other appliances, substantially as
herein before described and illustrated by the drawings.
2. The general arrangement, construction, and combination of the several and.
respective parts, together forming my improvements in convertible window sashes,
substantially as herein before described and illustrated by the drawings.
1
D
1335
LOVE DCCOU 4000.
GEO. DOWNING,
8, Quality Court, London, W.C.,
Agent for Applicant.
GEO. DOWNING,
8, Quality Court, London, W.C.,
Agent for Applicant.

page_text: a similar bracket and binge fitted to the lower sash. These brackets and hinges are let
into the styles and rails so as to be flush there with, or as nearly so as practicable,
when the sashes are in their normal sliding position. The bracket portion c¹ and d¹
of each hinge is securely screwed to the upper end of the stile and upper bar and
is made of an L form whereby the connection between the stile and upper bar
is greatly strengthened. ² and d² are the loose flaps of the hinges c¹ d'. Hinges
are fitted to the lower ends of the sashes c and d respectively, as shown at d³ in
Figs. 3. 7 and 8. The loose flaps of these hinges are provided with prongs as
shown at d. Corresponding staples e el are fixed to the frame to receive the
prongs of the lower hinges.
The loose flap c² of the hinge c¹ is fitted with a stud c³ and a corresponding
slotted plate is screwed to the frame to receive the stud c³, and thereby support
the sash, when lowered down into the position shown in Figs. 3. 4 and 10.
The loose flap d² of the hinge d' is formed with a slot do and a corresponding
T flange and plate g is screwed to the frame to receive the loose flap d². The flap
and plate g are shown detached in Figs. 1 and 5 and are shown united in Fig. 6.
The inner beads bb are shown fitted with hinges hh to enable them to be moved out
of the way of the sashes, and a portion of the parting beads k are likewise made
movable; the upper end of the movable part being dovetailed to the remainder as
shown at m in the drawings.
nn are two of the sash lines shown detached in Fig. 4 and hooked on to two
nails or pins at n¹ n' to prevent their running back. The ends are fitted with
thimbles to engage the pins o o in the stiles c and d. p is a plate screwed to the
frame to receive a horizontal pin, which enters a hole in the parting bead k and
secures the bead, when in position as shown in Fig. 2.
When it is desired to convert the sliding sashes, fitted as above described, into
sashes opening in the manner shown in Figs. 3 and 4; the beads bb are turned
back; the lower sash d is then slightly raised so as to clear the lower bead; the loose
flap d² is then secured to the plate 9, the prong d being retained in the staple e.
The sash d may then be drawn inwards, the cord n removed from the pin
secured at n¹.
:
and
In like manner the upper sash is drawn down; the lower parts of the parting-beads
are removed the loose flap c² is then secured to the plate f: the prong of the upper
sash centering the staple e¹. The sash c is then moved inwards: the remaining
cord n is removed, as before, and secured at n¹; the sashes are then in a convenient
position for cleaning, repairing or painting.
Fig. 5. is a view of the upper left hand corner of the lower sash d, with the loose
flap d in its recess, and raised above the plate g. In the same figure a top view of
the plate is shown.
Fig. 6 is a similar view with the loose flap d² engaged behind the T head of the
plate g.
Fig. 7 is a view of the lower left hand corner of the sash d, the cash and prong d
being raised above the staple e. Fig. 8 is a view of the reverse side of the portion
of sash shown in Fig. 7 opened out at right angles thereto. A front view and plan
of the staple e is shown in Fig. 8.
Fig. 9. is a view of the upper left hand corner of the upper sash c¹, showing the
loose flap c² in its recess, and the plate fin section. A front view of the plate fis
also shown in the same figure.
°
Fig. 10. is a view of the same portion of the sash c, showing the loose flap c²
engaged with the plate f, by means of the stud ce³ having passed into the slot of the
plate f.
The methods of forming the hinges and of attaching and detaching the loose flaps
of the hinges, may be varied by inserting a thumb screw therein, if preferred;
the thumb screw fitting into a suitable metal socket attached to the frame; and the
method of attaching the sash lines to the sashes may be varied by fitting a detachable
iron strap to the sash, having a slot to receive a stud at the end of the sash line.