Improvements in and relating to Windows, Cheval Glasses, and the like.
Year: 1894

page_text: Date of Application, 27th Nov., 1894-Accepted, 5th Jan., 1895
COMPLETE SPECIFICATION..
Improvements in and relating to Windows, Cheval Glasses, and
the like.
I, ROBERT LANHAM of Crown Point House, Sawbridgeworth, Herts, Gentleman,
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 :-
This invention relates to an improved construction of window, intended to
provide an arrangement by which the cleaning can be done with complete safety,
the construction permitting the window to be reverse'l when desired. The invention
being also applicable to cheval glasses and other like articles in which a swinging
action is employed.
As applied to windows, instead of forming them with sliding sashes the sash is
hung from the central point turning on a horizontal axis so that it can be swung
over into any position required. Both sides of the window can thus be turned
inwards, so that the window can be properly cleaned without any person being
required to work from the outside.
An arrangement is also provided by which the window can be securely fixed in
any position, open or closed.
As applied to cheval glasses, the arrangement is similar, a special form of pivot
and means for fixing the glass in the required position forming the chief portion of
my invention.
In order that the invention may be more clearly understood, reference is had to
the accompanying sheet of drawings, in which
Fig. 1 is an elevation of the complete window, Fig. 2 is a cross section,
Fig. 3 shows the draught protector,
Fig. 4 is a face view of the pivot and fixing device, and Figs. 5 and 6 are sections
of the same, and
Fig. 7 shows the second pivot.
A is the window frame or the frame of the cheval glass when the invention is
applied to that article, carrying within it the sash B held on the pivots C C¹ one
on each side of the centre. The pivot C' is formed by a plate screwed to the sash,
having a projecting pin, which takes into a hole in the second plate a at the side
of the frame.
The pivot C is formed on the disc D which is fixed at the side of the sash. This
disc is formed with the bevelled edges d and is supported in a plate a' fixed on the
side of the frame A formed with a circular hole to receive the disc, the edges of
the said hole being also bevelled to correspond with the disc. The disc and plate
thus form a pivot in addition to the ordinary pivot C, thus greatly adding to the
strength of the arrangement, the pivot C serving to hold the frame steady when
the disc is loose within the perforated plate.
On each side of the sash a thunb screw E is placed, screwing into the disc but
overlapping the plate a¹. This thumb screw serves to fix the sash in any required
position, as by screwing it down firmly the disc and plate will be clamped together,
and the sash prevented from turning. This can be done when the sash is turned
to any desired angle, thus securely fixing the window open. Only one of these
screws is used at one time, the other being outside.
Either of these clamps can be used as the window can
round, both faces being capable of forming the inner side.
be turned completely
Both top and bottom

page_text: of the sash are formed exactly alike, and a small automatic catch F is provided at
both ends, consisting of a sliding bolt carried in a slotted guide. This bolt when
turned into the lower position falls automatically by gravity, and enters the
perforation in the small plate f fixed at the bottom of the frame, thus locking the
window automatically when closed. A spring catch may be used in place of
the gravity catch to automatically lock the sash. The catches of these windows
are almost concealed as those outside the window are not used, and thus the window
cannot be opened from the outside.
To render the window draught proof a groove bis cut in the side of the sash,
and a rubber cord or tubing 6' is inserted, thus completely closing the window
when the sash is vertical. This rubber pad may extend all round the sash if
desired.
The clamping and riveting arrangement is precisely similar for cheval and like
glasses, the vertical catches being dispensed with.
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.) An improved device for pivoting and fixing swing glasses for windows and
the like, in position, consisting of a disc with bevelled edges, fitted to the side of
the glass, carried in a perforated plate having correspondingly bevelled edges,
fixed in the side of the frame, and thumb screw serving to clamp the disc and
plate together, substantially as and for the purposes specified.
(2.) A new or improved window consisting of swing sashes suspended on a
horizontal axis at the centre, and capable of turning completely round having at
one side a disc carried in a perforated plate on the frame, the plate and disc being
formed with bevelled edges, and provided with a thumb screw at each side serving
to clamp the disc and plate together, substantially as and for the purposes
specified.
(3.) A new or improved window having a swing sash pivoted at the centre and
capable of turning completely round, provided at one side with a disc having
bevelled edges turning in a perforated plate also bevelled at the edge, having a
thumb screw at each side serving to clamp the plate and disc together, with an
automatic gravity or spring catch fitted on the top and bottom of the sash the
lower one automatically locking the window when turned into vertical position
substantially as and for the purposes specified.
(4.) The improved window constructed and operated substantially as described
and shown in the accompanying drawings, and for the purposes specified.
Dated this 27th day of November 1894
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.