Improvements in Venetian Blinds.
Year: 1889

page_text: Date of Application, 9th Jan., 1889
Complete Specification Left, 9th Oct.. 1889-Accepted, 16th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Venetian Blinds.
I ANDREW SMITH of 57 Ashbourne Grove, East Dulwich in the County of Surrey,
Clerk do hereby declare the nature of this invention to be as follows:-
My invention relates to venetian blinds and it has for its object to enable the blind
to he removed bodily from, and to be replaced in the window opening when required
without difficulty and without dismantling the blind, that is to say, without uncording
the laths.
According to my invention I dispense with the fixed head or pulley lath and mount
the pulleys on which the rocking lath of the blind is hung, and those over which
the running cords pass, in brackets, the pulleys being so mounted in the brackets as
to be readily removable and permit the removal of the tapes and cords.
Dated this 9th day of January 1889.
COMPLETE SPECIFICATION.
Improvements in Venetian Blinds.
I, ANDREW SMITH, of 57, Ashbourne Grove, East Dulwich, in the County of Surrey,
Clerk, 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 venetian blinds, and it has for its object to enable the blind
to be removed bodily from the window opening and to be replaced therein as may be
required without difficulty and without dismantling the blind, that is to say without
uncording the laths.
According to my invention, I dispense with the usual fixed head or pulley lath and
mount the pulleys on which the rocking lath of the blind is hung and those over
which the running cords pass, in separate brackets so constructed as to admit of the
removal of the blind and cords.
Reference is to be had to the accompanying drawings forming part of this
specification, wherein figure 1 is a face view, and figure 2 a vertical section on a larger
scale, of a venetian blind hung according to my invention, the running and rocking
pulleys being placed within the window aperture. Figures 3, and 4, are similar views
to figures 1 and 2 of a venetian blind fixed to the lining of the window. Figures 5,
and 6, are details. The same letters of reference indicate like parts in all the figures.
The blind shewn in figure 1 is a blind of the ordinary construction while that shewn
in figure 3 is a blind of the special construction for which former Letters Patent were
granted to me dated the 21st day of June 1888, No. 9098.
In figure 1, a a¹ are the pulleys for the cords or tapes by which the rocking lath / of
the blind is suspended and a² a³ a are the pulleys for the running cords. The sheaves
of the pulleys a a¹ a³ are fast on their axes which are simply dropped into notches i in
the cheeks of the brackets j (fixed within the window aperture) so as to admit of the
entire blind being readily suspended or removed. The pulleys a³ a* may be of the
ordinary construction, as the cords may be threaded through them without removing
the sheaves in applying the blind to the window opening and removing it therefrom.
Referring to figures 3 and 5, the pulley a is mounted on an axis fixed in a brackete
and the front cheek f of said bracket is pivoted at g and slotted at h to engage with
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page_text: the front end of the sheave axis and so retain the sheave in place, as shewn, the said
cheek being free to be swung up, as shown in figure 5, to allow of the cord d being
readily placed over, and removed from, the sheave. The other pulleys are of similar
construction to those shewn in figure 1, but the pulley bracket is. screwed to the
beading by a tail piece k.
•
In figures 3 and 4, the laths are not supported by the usual ladders or holed for
cords but are held by their ends in sheet metal caps or clips n and are supported by
connecting chains o attached to eyes p on the front and back edges of the caps n said
chains passing also over the pulleys & a whilst the cords d d pass through loops
affixed to the ends of the clips, these loops being sufficiently elongated to permit of
free running of the cords in all positions of the laths.
Instead of using loops y projecting from the ends of the caps, the ends of the laths
may have notches (see figure 6) to receive the cords d'which are retained in
place therein by cross-pieces 2 which are secured to the notched ends, as shewn.
The clips n holds the lath securely whilst permitting of their individual removal,
whether for cleaning or matching in color, without dismounting the chairs, clips, or
cords. In this case, the brackets of the pulleys a a³ over which the running cords d d¹
pass are fixed to the lining of the window frame and the brackets a a¹ are fixed on the
beading, as shewn. The whole blind may be readily mounted and dismounted bodily,
as before, without removing the laths from the clips.
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 1
claim is;
The herein described mode of mounting the pulleys for the running and rocking
cords of venetian blinds in separate brackets so constructed as to admit of the insertion
and removal of the sheaves and cords without threading or unthreading the latter,
substantially as specified.
Datal th: 0th 1
1000