AN IMPROVED VENTILATING ROLLER WINDOW BLIND
Year: 1870

page_text: LETTERS PATENT to Arthur Cooper, of Twickenham, in the County
of Middlesex, for the Invention of "AN IMPROVED VENTILATING ROLLER
WINDOW BLIND."
Sealed the 17th February 1871, and dated the 19th August 1870.
PROVISIONAL SPECIFICATION left by the said Arthur, Cooper at the
Office of the Commissioners of Patents, with his Petition, on the
19th August 1870.
I, ARTHUR COOPER, of Twickenham, in the County of Middlesex, do
hereby declare the nature of the said Invention for "AN IMPROVED
VENTILATING ROLLER WINDOW BLIND," to be as follows:-
This Invention relates to roller window blinds made of holland, union,
or other flexible woven or textile fabric or material, and is designed for
the purpose of admitting fresh air into an apartment or room to
ventilate it, and at the same time to exclude the entrance of flies,
gnats; or other insects into the said apartment or room.
The following is an example of the means by which I propose to
accomplish these objects :-I take, for instance, an ordinary window

page_text: blind made of holland, and a few inches from its upper end I cut or
divide it across its entire width, and between these divided parts I insert
and connect by its edges a piece of openwork material, such as Brussels
net or other similar flexible material or suitable perforated fabric. The
blind thus made and combined with a perforated material is fixed on
the roller and rolls thereonto in the usual way.
To use a blind thus made for the purpose of ventilation it is simply
necessary to pull down the upper sash of a window a few inches or a
foot, then pull down the blind until the perforated part thereof comes
opposite to the opening in the window; by these means fresh air may
be admitted into a room when the window blinds are down. When
the blind is not required to be used for ventilation the perforated part
is wound on the roller of the blind, and the blind then presents the
appearance of an ordinary roller blind.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Arthur Cooper in the Great Seal Patent Office on
the 18th February 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ARTHUR
COOPER, of Twickenham, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of August, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Arthur Cooper, Her special licence
that I, the said Arthur Cooper, my executors, administrators, and
assigns, or such others as I, the said Arthur Cooper, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED VENTI-
LATING ROLLER WINDOW BLIND," upon the condition (amongst others) that I,
the said Arthur Cooper, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention, and

page_text: in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Arthur Cooper, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, that is to say :-
This Invention relates to roller window blinds made of holland, union,
or other flexible woven or textile fabric or material, and is designed for
the purpose of admitting fresh air into an apartment or room to
ventilate it, and at the same time to exclude the entrance of flies,
gnats, or other insects into the said apartment or room.
The following is an example of the means by which I propose to
accomplish these objects :-I take, for instance, an ordinary window
blind made of holland, and a few inches from its upper end I cut or
divide it across its entire width, and between these divided parts I insert
and connect by its edges a piece of openwork material, such as Brussels
net or other similar flexible material or suitable perforated fabric. The
blind thus made and combined with a perforated material is fixed on
the roller and rolls thereonto in the usual way.
To use a blind thus made for the purpose of ventilation it is simply
necessary to pull down the upper sash of a window a few inches or a
foot, then pull down the blind until the perforated part thereof comes
opposite to the opening in the window; by these means fresh air may
be admitted into a room when the window blinds are down. When
the blind is not required to be used for ventilation the perforated part
is wound on the roller of the blind, and the blind then presents the
appearance of an ordinary roller blind.
And in order to explain this Invention more fully I will now proceed
to describe the means by which it may be effected, reference being
had to the illustrative accompanying Sheet of Drawings and to the
numeral figures and letters of reference marked thereon as follows:-

page_text: Figure 2 differs from Figure 1 in the following respects:-The spaces
at Z, at Figure 1, are covered by fine net to prevent the entrance of
winged insects in hot climates more particularly. In cold climates
the spaces marked Z, at Figure 2, are left open or uncovered. The
plain part A of the blind is connected to the roller B by tapes C, C,
which may be wound on the roller when the blind is not required to
be used for the purposes of ventilation.
The Drawing shews the top sash of the window drawn down to
admit air.
I would here remark that I do not intend to limit or confine myself
to the use of perforated material inserted as above described, as the same
result might be obtained by perforating the material of which the blind
is made, or otherwise introducing perforations, but if desirable I leave
one or more large openings near the top of the blind for the air to
pass through, instead of its passing through perforations as previously
described. In this case I connect the divided parts of the blind together
at a suitable distance asunder by pieces of tape or other material, which
may be fixed in a line with the upright bars of the window sash, as
above described and represented at Figure 2.
Having now fully described and set forth the nature and object of 2
my said Invention for "An Improved Ventilating Roller Window Blind,"
together with the best means I am acquainted with for carrying the
same into practical effect, I would remark in conclusion that what I
claim as my Invention intended to be secured to me by the herein-before
in part recited Letters Patent is as follows:-I claim making flexible 2
rolling window blinds, either with perforations or with one or more
large openings therein near the top of the blind for the purpose of
admitting fresh air into a room, and thereby ventilating it when the
blinds are drawn down, substantially as above described.
In witness whereof, I, the said Arthur Cooper, have hereunto set 3
my hand and seal, this Seventeenth day of February, in the year
of our Lord One thousand eight hundred and seventy-one.