Improvements in Window Blinds.
Year: 1891

page_text: Date of Application, 23rd Sept., 1891
Complete Specification Left, 23rd June, 1892-Accepted, 23rd July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Window Blinds.
I, CHARLES HENRY WILKINSON, of Milnsbridge, Huddersfield, in the County
of York, Colourist, do hereby declare the nature of this invention to be as
follows:-
:-
My invention relates to those window blinds which are mounted so as to be
raised and lowered and the chief objects of my invention are to regulate the
admission of light and to improve the ventilation of the room when the window is
open.
In carrying my invention into effect two blinds are used to one window or
opening and are suspended from rollers fixed in parallel lines one behind the other.
Each blind has openings stamped or otherwise made through the material either in
rows or other arrangements agreeable to requirement. On drawing the first blind
down sufficient of the window or opening is covered to prevent any person outside
by taking a cursory glance from seeing inside the room whilst at the same time the
openings in the blind adinit light sufficient for carrying on ordinary employment
and it so far contributes to the privacy of a room that a person standing inside the
room can see through the openings to the outside but persons outside and not close
up to the window or opening cannot see inside the room as they can when venetian
blinds are used. If less light is required than is given by the openings in the front
blind then the back blind is drawn down behind it and the openings in it which can
be made smaller than those in the front blind are drawn opposite to the openings
in the front blind.
If the rays of light are required to be turned towards the ceiling or towards the
floor the back blind must be drawn so as to have its openings a little higher or a
little lower than those in the front blind and if all the light requires to be excluded
then the back blind must be drawn so that its openings are opposite the solid
portion and between the openings of the front blind.
More even ventilation from the window is secured when the blinds (or one of
them) are down as they break up any draught from the open window consequently
they will be found of great benefit in rooms requiring ventilation such as sick rooms,
public halls &c.
The openings in the blinds may be made to any design and they afford
opportunities for presenting the same in a variety of artistic forms.
Dust cannot accumulate on these blinds as on the old style of venetian blinds
neither are the cords so liable to get out of order and a room in which these blinds
are in use presents a cleaner and more cheerful appearance than either a solid
blind or the old style of venetian blinds.
My improved blinds may be made of woven fabrics paper or other suitable
material and they are preferably painted on one or both sides to strengthen the
edges of the perforations or the edges may be otherwise strengthened.
Dated this 22nd day of September 1891.
H. B. BARLOW,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Window Blinds.
I, CHARLES HENRY WILKINSON, of Milnsbridge, Huddersfield, in the County
of York, Colourist, 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 those window blinds which are mounted so as to be
raised and lowered and the chief objects of my invention are to regulate the
admission of light and to improve the ventilation of the room when the window is
open.
In carrying my invention into effect two blinds are used to one window or opening
and are suspended from rollers fixed in parallel lines one behind the other. Each
blind has openings stamped or otherwise made through the material either in rows
or other arrangements according to requirements. On drawing the first blind down
sufficient of the window or opening is covered to prevent any person outside by
taking a cursory glance from seeing inside the room whilst at the same time the
openings in the blind admit light sufficient for carrying on ordinary employment
and it so far contributes to the privacy of a room that a person standing inside the
room can see through the openings to the outside; but persons outside and not close
up to the window or opening cannot seè inside the room as they can when venetian
blinds are used.
And in order that my invention may be fully understood and readily carried into
effect I will describe the accompanying sheet of drawings reference being had to the
figures and letters marked thereon.
Fig. 1 is an elevation of a front blind and Fig. 2 an elevation of a back blind and
Fig. 3 is an end view of the two blinds as combined and arranged according to my
invention.
In these views,-u designates the front blind which is perforated with rows of
holes a¹ and is secured to a roller c in any convenient manner. The back blind b,
which is attached to a roller d, is also perforated with rows of holes.' preferably
smaller than the holes a¹ but corresponding in position therewith.
The blinds a and b are mounted and arranged so that they can be raised and
lowered independently of one another.
If less light is required than is given by the openings a' in the front blind a then
the back blind 6 is drawn down behind it and the openings in it are drawn
opposite to the openings in the front blind.
If the rays of light are required to be turned towards the ceiling or towards the
floor the back blind.b must. be drawn so as to have its openings.' a little higher or
a little lower as the case may be than those in the front blind, a and if all the light
requires to be excluded then the back blind must be drawn so that its
openings are opposite the solid portion and between the openings a' of the front
blind.
More even ventilation from the window is secured when the blinds (or one of
them) are down as they break up any draught from the open window consequently
they will be found of great benefit in rooms requiring ventilation without draught
such as sick rooms, public halls &c.
The openings in the blinds may be made to any design and they afford
opportunities for presenting the same in a variety of artístic forms.
Dust cannot accumulate on these blinds as on the old style of venetian blind
neither are the cords so liable to get out of order and a room in which these blind
are in use presents a cleaner and more cheerful appearance than either a solid
blind or the old style of venetian blinds.
My improved blinds may be made of woven fabrics, paper or other suitable
material and they are preferably painted on one or both sides to strengthen the
edges of the perforations or the edges may be otherwise strengthened.

page_text: 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 :-
The combination of a pair of window blinds each provided with holes or openings
whereby the admission of light can be regulated substantially in the manner and
for the purposes herein described with reference to the drawings annexed.
Dated this 22nd day of June 1802
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicant..