Improvements in Windows.
Year: 1894

page_text: Date of Application, 8th Aug.. 1894-Accepted, 8th Sept., 1894
Improvements in Windows.
I, LAWRENCE ROBSON, of 2 Montrose Villas, East Parade, Harrogate, in the
County of York, Land Agent, 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 :—
My invention relates to windows having upper and lower sliding sashes and has
for object to enable the sashes to be readily removed and replaced when required
and the windows to be easily cleaned without risk of injury to the person cleaning
them.
For these purposes according to my invention the window frame has pulley stiles
so arranged that the guiding surfaces, of the one for the top sash project beyond
those of the one for the bottom sash, (that is to say the distance apart of the
opposite stiles for the upper sash is less than the distance apart of those for the
lower sash), and the parting bead between the two pulley stiles is, at each side of
the window cut away at its lower end, for some distance below the lower
extremity of the top sash so as to be flush with or on the same level as the
uiding surface of the stile for the top sash, the remaining lower portions of
the parting beads forming side guides for the bottom sash; by this means after the
bottom sash has been removed, the top sash can on being lowered be drawn forward
from its guide into the guide of the bottom sash.
I construct the bead laths on the inside of the window frame, and which form the
front side guides for the bottom sash, each in two parts, of equal or unequal lengths
(preferably unequal) the upper portion being secured to the window frame by a
screw or pin passing through the centre of its length on which it is capable of
swivelling, and the adjacent ends of the two parts are made angular to enable the
upper part to swivel on its centre screw or più. The bottom lengths of these bead
laths are removable from the window frame, heing attached thereto by screws
inserted in them at certain distances apart, the heads of which are arranged to
project therefrom so as to form slot pins that take into keyhole slots formed in
metallic plates, placed in the window frame the same distance apart as the centres
of such screws; provision is made to enable these metallic plates to be readily
adjusted sideways for the purpose of bringing the bead close to the sash so as to
make it draft and dust proof.
The sashes are provided with means for enabling the sash cords to be readily
removed therefrom and replaced when required.. For this purpose, sash cords
having loops formed on their ends, may be used which are placed on buttons secured
to the stiles of both sashes on both sides thereof, in recesses at the lower ends of
the grooves for the sash cords, the other ends of the cords being attached to the
weight, as usual.
The underside of the bottom rail of the top sash is at both sides of the window
provided with thumb bolts, moving sideways, which, when the sash is being removed
from the window frame, can be pushed into recesses in metallic plates fixed in
either side of the window frame, or into recesses formed in the pulley stiles;
support thus being obtained for the lower end of the sash while the cords are
being removed, or while the outsides of the panes of the sash are being cleaned.
I sometimes use these thumb bolts, especially in long windows, to assist in guiding
the bottom end of the sash, by sliding the bolts into grooves formed in the pulley
stiles for that purpose.
Instead of using thumb holts to form supports as just described, I may at both
sides of the lower sash at the bottom thereof, fix metal plates, having open ended

page_text: placed ou pins that project from each side of the window frame, and form supports
for such sash whilst the cords are being removed or replaced, or the outsides of the
panes of the sash are being cleaned.
In the accompanying drawings,
Fig. 1 is a front elevation of a window in accordance with my invention;
Fig. 2 a vertical section ;
Fig. 3 a side view of the pulley stiles at one side of the window, the bead lath
being removed to show the parting bead;
Fig. 4 a cross section thereof to a larger scale;
Fig. 5 a front view of adjustable keyhole slot plate;
Fig. 6 a similar view of supporting plate;
Fig. 7 part view of bottom sash;
Fig. 8 an edge view of part of the sash stiles (upper and lower);
Fig. 9 a cross section of the same;
Fig. 10 an edge end view of top sash;
Fig. 11, a part elevation of same; and
Fig. 12 a side view of one of the removable inside beads.
Similar letters denote like parts wherever they occur.
A are parts of the casing forming also the front covers of the weight pockets,
B is the sill, and the head. D is the top sash which is according to my
invention made narrower than the bottom sash E, the surfaces forming the
guides F for the top sash and the guides G for the bottom sash in the pulley
stile H being correspondingly formed. I is one of the parting beads; it is let
into the pulley stile H as shewn in Fig. 4 or may be fixed on to the guide F, in
which case such guide would be made proportionately wider. The parting bead I
is as shown in Figs. 2 and 3, cut away from J to J', to the same level as or flush
with the guide F the remaining lower portion of the parting bead on the inside of
the guide G forming a side guide for the bottom sash E. The inside bead is formed
in two lengths K, K', being divided angularly at M. The top length Kis
secured to the window frame by a screw or pin N on which it can swivel into the
position represented by the dotted lines O in Fig. 2 from which figure the removable
bottom length of the bead is omitted to enable other parts to be shewn more
clearly. The length K', which is shown in elevation in Fig. 12 has screws Pand P
inserted therein, the heads of which project so as to form slot pins, which when
placed in position, take into the keyslots in the plates Q and Q1, and are secured
thereto by being slidden into the lower portions S and S thereof. The plates Q
and Q are formed with cross slots T in place of ordinary holes for the fixing
screws to take into so as to enable the said plates to be adjusted according to the
thickness of the sash. This bead K is prevented from rising in the keyhole slots
by the top length K closing upon its angularly shaped upper end M, provision being
made in the bottom bead K to cover the projecting pins U and U¹ and supporting
plates V and V³, or not as the case may be.
On both sides of each sash at the lower ends of the cord grooves X are embedded
and affixed sash cord holding devices W, for which I intend obtaining separate
Letters Patent, or instead of such sash cord holding devices, 1 may use buttons Y
inserted in recesses Z over which loops formed in the ends of the sash cords are
passed.
On the underside of the bottom rail A' of the top sash D at both sides of the
window are fixed thumb bolts B2 which are projected into recesses in the supporting
plates V and V₁ whilst the outside of the panes of such sash are being cleaned, or
whilst the sash cords are being removed or replaced the sash turning inwardly
upon such bolts as pivots. Instead of thumb bolts B' I may use pins inserted in
the recesses of the supporting plates V and V1 to answer the same purpose. At
both sides of the bottom sash E at the bottom I fix metal plates C² (Fig. 7)
having open-ended slots D' formed therein, that take on to the projecting pins U
and U', which thus form supports whilst the outside of the panes of such lower

page_text: sash are being cleaned, or whilst its sash cords are being removed therefrom or
replaced therein.
This means of supporting one end of the sash rigidly is very advantageous during
the operation of cleaning, and whilst removing or replacing the sash cords,
especially in large and heavy sashes.
When it is desired to clean the outsides of the panes of glass in the bottom
sash E, or to remove or replace the sash cords, the top lengths of the inner beads
are turned on their screws to the position shown in dotted lines O in Fig. 2; the
bottom lengths K' are then removed by lifting them up until the screws P come
opposite the holes at the upper portions of the slots therein. The sash is then
lifted and the bottom end brought forward, until the open ended slot plates C² rest
on the projecting pins U and U. The top part of the sash is then pulled forward
so that the sash rests on the projecting supporting pins U and U' at one end and on
the cords at the other in which position it is ready for cleaning or for the cords
to be removed. In order to clean the outsides of the panes of glass in the top
sash D the lower sash is removed from the window frame and the top sash is
lowered to the bottom of its guide, when it can without further trouble be pulled
forward into the guide of the bottom sash; it is then lifted therein until the thumb
bolts B2 can be pushed sideways into the recesses in the supporting plates V and Vi
fixed in the sides of the window frame, then by taking hold of the top part of the
sash and pulling it forward into the room, the lower part will be supported
on the said thumb bolts whilst the upper part is supported on or by the sash cords
ready for cleaning.
When the sashes are resting in the position as described the cords are easily
removed from their holders by pulling after which the sashes can be removed.
When the cords require to be again fixed to the sashes the sashes are placed in
the cleaning position and the cords connected thereto. When the sashes have been
replaced in their respective places the bottom inside bead is refixed and the top
one returned to its vertical position.
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. A window comprising pulley stiles formed with guiding surfaces of which
those for the upper sash project beyond those for the lower sash, parting beads
having their lower portions of reduced size so as to enable the upper sash to be
readily brought between the guiding surfaces of the lower sash, and inside beads
so constructed and arranged that they can be readily moved to enable the sashes
to be wholly or partially moved away from the window frame substantially as
described with reference to the drawings.
2. In a window of the kind referred to in Claim I means for supporting the
sashes while the outer surfaces of the windows are being cleaned or the sash cords
are being removed or replaced substantially as described and illustrated.
3. An inside bead for a window formed in two pieces, one of which swivels on a
screw or centre pin, and the other is provided with screws or the like which engage
in a detachable manner with keyhole slots formed in adjustable metal plates
substantially as described and shown for the purpose specified.
4. The hereinbefore described improvements in windows substantially as
described with reference to and shewn in the accompanying drawings.
R. E. P. CRAVEN,
Registered Patent Agent, 22, Victoria Chambers, South Parade, Leeds,
Agent for the Applicant.