Improvements in or relating to Sliding and Swivelling Windows.
Year: 1894

page_text: Date of Application, 30th June, 1894
Complete Specification Left, 23th Mar., 1895-Accepted, 4th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Sliding and Swivelling Windows.
0
I, WALTER FLITCROFT of 326 Bridgeman Street, Bolton in the County of
Lancaster, Pattern Maker, do hereby declare the nature of my said invention to
be as follows:-
•
This invention refers to improvements in or relating to sliding and swivelling
windows, and is designed to allow of the same being cleaned and glazed from the
nside of a building. This I cairy into effect by constructing the window sashes
in the usual manner and provide them with loose wooden or other styles and the
ashes are fitted with metallic racks in which operate spur pinions mounted on pins
r centres secured to the casing on each side. The spur pinions are provided with
neans for keeping them in position laterally. The racks are disposed on each sash
so that when one sash is operated either up or down the other will be operated in
like manner by action of the pinions, and when centrally disposed will allow of the
sashes being swivelled to clean and glaze the same. To prevent draught through
the joints between the styles and frame I provide sliding pieces operated by a screw
or screws fixed in any convenient position.
Dated the 28th June 1894.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.
COMPLETE SPECIFICATION.
Improvements in or relating to Sliding and Swivelling Windows.
IWALTER FLITCROFT of 326 Bridgeman Street, Boltou, in the County of
Lancaster, Pattern Maker, 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 and accompanying drawings:
My said invention relates to certain improvements in sliding and swivelling
windows, whereby the same can be cleaned and glazed from the inside, thus
obviating the danger to life and limb which is frequently attendant upon such
operations when carried on from the outside.
Under my improvements the window sashes are of the usual form and are fitted
with metallic racks in which operate spur pinions mounted on pins or centres
secured to the casing on each side. The racks are disposed on each side so that
when one sash is operated either up or down the other will be operated in like
manner by action of the pinions, and when centrally disposed will allow of the
sashes being swivelled to clean and glaze the same. To prevent draughts through
the joints between the styles and frame 1 provide sliding pieces operated by a
screw or screws fixed in any convenient position and the said draught slips also
lock the swivelling portions of the sash casing or frame in position.
to this
To render my invention more fully understood I have attached
Specification two explanatory sheets of drawings to which I will hereinafter
rafor

page_text: Fig. 1 is a front elevation of my improved window sash with a portion of the
frame and casing in section.
Fig. 2 is a vertical section of Fig. 1.
Fig. 3 shows the swivel portion of the window frame with sliding sashes turne.l
to some extent.
Figs. 4, 5, 6 and 7 on Sheet 2 and Figs. 8 and 9 on Sheet 1 illustrate details and
modifications of my invention.
The inner window sash is marked a, the outer sash b. Per se these sashes are of
the ordinary construction and slide face to face in the usual manner.
A portion c on each side of the sash frame is made movable relatively to the
sash frame and I pivot these portions e upon pivot pins d which are firmly fixed
by screws to the fast portion of the frame as clearly shown in the enlarged view
Fig. 4.
The ends of the portions c are curved radially from the centres of the pivots d
and are of equal or greater length than the sashes a and b so that when the sashes
are slid so as to lie opposite to each other, the sashes with the pivotted portions e e
of the frame can be turned round upon the pivots d d so that any part of either of
the sashes can be easily reached and handled by a person standing within the room.
To counterbalance the two sashes a, b and to cause them to synchronise in their
movements, I furnish them with racks e which gear with pinions f mounted to run
loosely upon extensions d¹ of the pivots d. These racks with the pinion appear
clearly in Figs. 2, 3 and 4 of the drawings. It will be plain that when the sashes
are in their normal position, the raising or lowering of one sash will correspondingly
lower or raise the other.
In order to lock the swivelling portions c c of the sash frame in their normal
position that is to say in the position shown in Figs. 1 and 2 for example, and also
to stop draughts through the joints, I provide loose slips or feathers g suspended
by links g in a recess just behind the portions c of the sash frame. In each of the
said slips or feathers g I secure a nut h which engages with a thumb screw i passing
through the pivotted portion c and screwing into the nut h. By means of the
thumb screw i, I draw the slip g closely against the pivotted portion c and cause a
bead g² on the slip g to enter a recess in the part c. This relative construction of
the swivel frame c and the slip g will be most clearly seen by a reference to Figs. 1
and 4 of the drawings. When the thumb screws are relaxed and removed, the
suspended slips g g fall away from the frame into their recesses and leave the
pivotted frame cc free to turn upon the pivots d d. To secure the sashes when
closed or opened a little for ventilation I employ a fastener / (Figs. 8 and 9) which
is simply a sliding catch sliding on a fixed plate 42 and drawn forward so as to
cause a tooth at the inner end of the catch to engage with the teeth of the rack
and so lock and prevent movement of the sashes as clearly shown in Fig. 8.
To release the rack the fastener k is pushed inwards so as to move the tooth k¹
out of gear with the rack.
The practical working of my invention will have been made apparent from the
foregoing description and it will be evident that by merely removing the thumb
screws and seeing that the catch k is disengaged the sashes a and b can be run
between the pivotted portions c c and turned upon the pivots d so as to render
either side of either sash easily accessible from the interior of the room.
To prevent an accidental slip of the sashes from the frame c when being
turned on the pivots provide a fixed or removable stop not appearing in the
drawings.
The sashes are made removable from the sides c by rendering the inside
confining beads c' (as indicated in dotted lines in Fig. 3) detachable. The sashes
are placed in a nearly horizontal plane inclined towards the room. The thumb
screws i can then be passed through the pivotted portions c c and screwed into a
nut similar to h secured to the fast portion of the frame. This secures the pivotted
portion of the frame and prevents them from swivelling when removing the sashes.
The confining beads c'c' can now be lifted as indicated in Fig. 3 and the top

page_text: sash 6 lifted out of position. The bottom sash a can then be drawn into the room.
The putting together of the sashes is the reverse of this operation.
In Fig. the racks and pinions for causing simultaneous motion of the two
sashes are indicated, but there is no swivelling or pivotted portion of the frame.
In this case to permit removal of the sashes I make a sufficient portion of the
inside confining beads c' detachable, as plainly indicated by the dotted lines, which
renders removal of the inner sash a easy, the outer sash 6 having been previously
supported by props or other suitable means.
The lower portion of parting bead c² which is also detachable can now be
removed and the sash b dropped and drawn into the room as indicated.
I might also in some cases hinge the glazed portions of the sashes so that they
could be turned into the room to be cleaned or glazed.
To provide for cases where the sashes a and b are of different depths and therefore
require unequal speeds as would sometimes happen, I use differential gearing as
shown in Figs. 6 & 7 of the drawings. Thus if the shallower outer sash b is to
move more quickly than the deeper inner sash a then a larger pinion f¹ gears with
the rack e of the sash 6 while a smaller pinion gears with the rack e of the
sash a.
The result is that if the inner sash a is pushed up or down for a certain distance
the outer rack b will move through a greater space. These latter modifications are
however subsidiary to the main points of my invention which are to be found in
the rack and pinion and pivot frame arrangements.
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. As means for facilitating the handling, cleaning and repairing of windows,
connecting the respective window sashes by racks and pinions and mounting them
in pivotted styles or side frames whereby either side of both sashes can be easily
reached and operated upon from the interior of the room, in the manner and
substantially as hereinbefore described and as illustrated.
2. In windows for dwelling houses and the like, connecting the upper and lower
sashes by means of racks attached to the respective sashes and gearing with a
pinion or with pinions placed between the sashes, whereby the sashes are counter-
balanced and the motion of one sash made dependent upon the notion of the other,
substantially as described and shown.
3. The pivotted styles or side frames for containing and revolving the sashes
substantially as described and shown.
4. The draught slips or feathers g for locking the pivotted styles or side frames
in position, the said slips being so suspended as to fall away automatically_from
the said pivotted styles or side frames, when released, so as to allow the styles to
revolve on their pivots, substantially as described and shown.
5. As means for locking sliding sashes of the indicated nature and construction,
the sliding fastener k mounted on a fixed portion of the sash frame and capable of
being slid into and out of gear with the rack of one of the sliding sashes so as to
lock or unlock the same, substantially as hereinbefore described and shown.
6. The general arrangement construction and combination of the improved
sliding and swivelling window substantially as herein before described and as
illustrated.
Dated this 27th day of March 1895.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.