Improvements in Window-Blind Fittings.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Window-Blind Fittings.
CHARLES LEIGH, 45, Darnley Road, Hackney, N.E., Gentleman, do hereby
declare the nature of this invention to be as follows:
A plain or corrugated Slot, Groove, Sleve or suitable connection any shape
with or without a spring, is fitted or attached to, or caused to be made in the upper
or suitable part or parts of the Window frame or moulding, and a plain or corru-
gated Tongue Socket or other connection of any shape with or without a spring is
fitted or attached to, or caused to be made in the top rail of the blind, to correspond
and thus describe a detachable blind (preferably a Venetian Blind), thereby
dispensing with the old method of screwing. The nature of my invention is a
detachable or adjustable Venetian Blind and I therefore in no way bind or limit
myself to use one or more of the single or joint connections and I have the right
to alter same as the case may require, as for example, the object thus obtained by
the following various means: Namely:-Tongue and Groove, Hook and Eye, Eye
and Bolt &c., either of the Grooves Slots &c., can be made of any suitable material,
Brass, Iron, Wood &c.
Dotod this 10th day of Fabmuom 1907
Improvements in Window-Blind Fittings.
I, CHARLES LEIGH, of 45, Darnley Road, Hackney, in the County of Middlesex,
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:-
My invention relates to window blinds, particularly those known as Venetian
blinds, and has for its object to so provide that the blinds may be easily detached
from the window frame for cleaning or otherwise and as readily replaced without
the necessity for using a screw driver or other tools.
The invention can be carried into effect in various ways some examples of which
are indicated in the accompanying drawings, in which
Fig. 1 to 6 are perspective views of one angle of a window frame with a blind
fitted thereto.
Fig. 7 is a vertical section such as would be obtained on the line 7-7 of Fig. 5
the devices D) and E of Fig. 7 being different in construction from the correspond-
ingly lettered devices in Fig. 5.

page_text: Fig. 8 is an end elevation of the apparatus shown in Fig. 7 and,
Fig. 9 is a section transverse to the length of devices D and E which are
corrugated.
Like letters indicate like parts throughout the drawings.
Referring to Fig. 1 each side of the window frame A has a groove a cut in it
into which the top rail B (shown in dotted lines) of the blind can be slidden. To
remove or replace the blind all that is necessary is to slide the top rail B out of
it into the said grooves.
In Fig. 2 instead of a groove being cut in the window frame a fitting a² is
secured by screws a³ or otherwise to the frame, the fitting being provided with a
channel to receive the top rail B as aforesaid. Conversely there could be a rib
secured on the window frame to engage with a corresponding groove formed in the
end of the top bar or in a fitting thereon.
The modification shown in Fig. 3 consists in providing the top bar B of the
blind with hooks b and securing corresponding eyes 62 to the window frame so that
the blind can be removed by simply unhooking the top bar from the eyes or secure
them in place by a converse operation.
:
It will be evident that the hooks may be on the window frame and the eyes
secured to the top bar of the blind instead of as shown.
The hooks are dispensed with in Fig. 4, the cyes 62 on the window frame passing
through slots in the top bar B and being then secured by pins c or the like,
which are passed through the eyes 2 to retain the bar B in position. The dotted
lines on the right of the Figure show the top bar B thus-secured in position.
In the arrangement shown in Fig. 5 a tongue and groove fitting is employed,
the tongue D being secured by screws d to the top bar B and arranged to slide into
a groove d² formed in a plate E, which latter is secured to the upper member of the
window frame in any suitable manner. The tongue is fixed in a line at right angles
to the window so that it can be easily slid into and from the groove to attach to
or remove the blind. It will of course be understood that the various fittings
described with reference to Figures 3 to 9 inclusive are provided at or near each
end of the top bar of the blind, and when necessary by reason of its extreme
length or weight intermediate fittings may also be employed.
Another form of the tongue and groove fitting is shown in Fig. 6 in which a
plate D is secured by screws to the top bar B of the blind, the said plate being
provided with a V groove adapted to slide on to a plate E¹ fixed to the window
frame A and made with corresponding angular edges (4. In this case similarly
to the last described the blind is secured or removed by sliding the parts 1¹ on
the parts E towards or from the window.
Figure 7 shows a transverse section and Figure 8 a front view of part of a
window-frame and a blind fitting comprising a spring device for securely holding
the blind in place. In the arrangement shown the tongue 1) which is attached to
the top bar B is provided with a spring F which fits into a central groove in
the plate secured to the window frame, the said plate E being made deeper than
in the other examples to accommodate the spring. The spring F is provided with
a projection do which when the tongue is in position in the grooved plate E engages
with a raised part e on the plate E and so prevents the parts D and E from acci-
dentally sliding apart. The free-end f of the spring F passes through an
opening in the vertical part of the tongue D. To remove the blind the end of
the spring is raised to disengage the projection do from the raised part e so that
the tongue D can be slidden out of the socket E.
It will be understood that a spring attachment is equally applicable to the
modifications illustrated in Figs. 5, 6 and 9, the object being to prevent in every
case the parts from becoming accidentally disengaged.
A further modified form of the tongue and groove attachment is shown in
section in Fig. 9 in which the tongue 1) has a corrugated or similar form. The
part of the socket E in which the tongue engages is corrugated so as to have a
correspondingly-shaped groove.

page_text: It is to be clearly understood that this invention is not limited to the apparatus
herein before described by way of example.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination of a window-frame such as A with a blind-bar such as B
which may be placed in position in the frame or removed therefrom without the
employment of tools.
2. The combination of a window frame such as A with a Venetian blind which
may be placed in position in the frame or removed therefrom without the
employment of tools.
3. The combination of a window frame with a blind-bar substantially as
described and illustrated in Figure 1 or Figure 3 or Figure 4 of the accompanying
drawings.
4. The combination and arrangement of parts constituting the complete device
for retaining the window blind in place substantially as and for the purpose
described and illustrated in Figure 2 or Figure 5 or Figure 6 or Figures 7 and 8
or Figure 9 of the accompanying drawings."
Dated this 18th day of November 1897.