Improvements in or appertaining to Venetian Blinds.
Year: 1894

page_text: Date of Application, 24th Sept., 1894
*Complete Specification Left. 24th June, 1895-Accepted, 27th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in or appertaining to Venetian Blinds.
I, MARY BOATE of Pope's Hill House, Cork in the County of Cork, Married
Woman, do hereby declare the nature of this invention to be as follows :-
:-
This invention has for its object an arrangement whereby Venetian blinds can be
drawn up in such manner that the bunch of laths shall be on the top instead of at
the bottom of the hanging portion.
The
There are several ways of carrying out my invention, which however consists
essentially in preventing the cord running through any given lath.
result is that when the cords are drawn up the lath lifts those above it in
succession, while those below it hang in the usual manner. By therefore arranging
ones clip at any required point any required distance of blind can be drawn up and
no further. The form of clip I prefer at present if it can be made, is a rod passed
through loops in the cord, the cord being made every inch or so in the form of a
loop instead of a single cord for this purpose. If however the expense of making
this cord be so great as to make it prohibitory, instead of such a cord I arrange
either two clips attached to the cord in any given lath, or a bar, rod, or block
having a deep curved or angular hoop groove in it, which on being pressed against
the cord, the cord enters the groove, and the friction in the groove is so great that
the cord cannot run through it. The result is precisely the same, the blind is
drawn up until the laths above the clip become a solid bunch, it will then draw up
no further and all the laths below hang in their ordinary manner.
Dated the 22nd day of September 1894.
WM. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Patent Agents for the Applicant.
I, MARY BOATE, of Pope's Hill House, Cork, in the County of Cork, Married
Woman, 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 has for its object an arrangement whereby Venetian blinds can be
drawn up in such manner that the bunch of laths shall be on the top instead of at
the bottom of the hanging portion.
There are several ways of carrying out my invention, which however consists
essentially in preventing the cord running through any given lath. The result is
that when the cords are drawn up the lath lifts those above it in succession, while
those below it hang in the usual manner.
By therefore causing any particular lath to move with the cord any required
distance of blind can be drawn up and no further. A convenient way of effecting
this and the one which I prefer is by means of an additional lath to be inserted
between two of the ordinary laths and having clips to engage the cord.

page_text: The accompanying drawings illustrate this way.
Figure 1 being an end view of a Venetian blind showing the application of my
invention.
Figure 2 an end view of the additional lath with its clip engaging the cord.
Figures 3 and 4 plan and edge view respectively of the additional lath and the
gripping devices, and
Figure 5 a plan view of the same lath without the gripping devices.
Referring more particularly to Figures 1 and 2, A are the ordinary laths B the
lifting cord and C the additional lath. The latter is formed as shown in Figure 5
with slotted or forked. ends. D and a gripping device directly under the same.
This gripping device consists preferably of a hinged plate secured to the lath at
one side of the slot E, F being the hinged or gripping portion. G Figure 3 is a
spring tending to press the hinged portion F upwards. H is an angle plate
secured to the lath C on the side of the slot E opposite the hinged plate. I is a
lever pivoted at J whereby the gripping plate is opened to receive the cord.
The mode of action is as follows:-
It must
The lath C is first inserted between two of the blind laths A according to the
height it is required to raise the blind. In order to do this the levers I are pressed
down by the first finger of each hand thereby opening the gripping pieces F and
allowing the lifting cords B to enter the slots E at each end of the lath. On the
pressure being removed from the levers I the gripping pieces F whose edges are
serrated or roughened instantly close on the lifting cords B by reason of the
springs G and grip the same and the greater the tension on the cord the tighter will
be the grip. Consequently when raising the blind the lath C will lift those above it
as shown in Figure 1 and those below will hang in their ordinary manner.
be understood that this invention is not confined to any particular clamping or
gripping devices as in some cases I may pass a rod through loops in the cord, the
cord being made every inch or so in the form of a loop instead of a single cord for
this purpose. If however the expense of making this cord be so great as to make
it prohibitory,. instead of such a cord I may arrange either two clips attached to the
cord in any given lath, or a bar, rod, or block having a deep curved or angular
hoop groove in it, which on being pressed against the cord, the cord enters the
groove, and the friction in the groove is so great that the cord cannot run through
it. Or I may insert a wedge in the hole in the lath where the cord passes through
so that the lath will move with the cord, or instead of fixing the lath to the cord
I may place a clamp on the cords directly underneath the lath to be raised, the said
clamp being of such dimensions as not to pass through the hole in the lath. The
result is precisely the same in all the methods, the blind is drawn up until the
laths above the clip or other device become a solid bunch, it will then draw up no
further and all the laths below hang in their ordinary manner.
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. The arrangement of raising gear of Venetian blinds whereby any given lath
in such blinds is caused to raise those above it into a hunch while the laths below
hang in their ordinary manner substantially as described.
2. The additional lath with its gripping devices substantially as described and
shown on the accompanying drawings and for the purposes set forth.
Dated this 24th day of June 1895
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.