Improvements in Blinds or Coverings for Windows and the like.
Year: 1886

page_text: Date of Application, 13th Nov., 1886.
Complete Left, 3rd Aug., 1887.
Complete Accepted, 13th Sept., 1887.
Improvements in Blinds or Coverings for Windows and the like.
1, HERBERT JOHN HADDAN of 67, Ştrand, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention a communication to me from
abroad by Martin Georg Mitter of Berlin Germany, Engineer to be as follows:-
The present improvements have for their purpose to protect shop-windows and the
like from the injurious effects of the rays of the sun without obstructing the view of
objects behind the blind and without impairing the light in the room.
The improved blind may be composed of a cloth blind in combination with a
venetian or slut blind or of either separately. It is immaterial, whether the slats be
arranged above or below the cloth and whether they be adapted to be rolled or laid
together.
The rolling up or laying together of the slats may be effected at any suitable place
on the blind so that, for instance, the lower part may be covered and the upper part
remain quite free; likewise the window can be covered in the middle so that the upper
and lower part are free; further the slats are adapted to be drawn together so as to
give the curtain the appearance of an ordinary cloth window blind or vice versa, the
cloth of the blind can be wholly rolled up, so as to leave a Venetian blind only.
When the blind is made with cloth only, it consists essentially of a lower roller and
an upper roller. To the lower roller is fastened the blind and the said roller is
suspended by placing its two pivots in rings connected by cords to the upper roller on
which the said cords are wound.
At one side of the lower roller is arranged a counter poise the cord of which is
wound on a drum situated on the roller.
By lowering the lower roller more or less, or pulling it up completely to the top of
the window and by unrolling the blind from it more or less, any convenient part of
the window may be covered.
The blind may have a certain number of venetian slats arranged below the same in
the usual manner.

page_text: In this modification the upper roller is dispensed with and in place of the same a
cross bar accompanying the lower roller when ascending and descending, is used.
This cross bar is then controlled by cords passing over pulleys arranged above.
If these slats are intended to be placed together and the blind to be lifted in this
state, the cloth blind is let down on to the parapet or sill so that the flaps are placed
together. A hinged hook governed by a spring and fastened to the cross bar at the
bottom of the cloth blind catches under the last slat, so that the slats are held together
and the spring prevents the hook from becoming loose. The slats are let down by
pulling a cord, which moves an angle lever and thereby presses back the hook and
releases the slats so as to allow the same to spread.
In a further modification the cloth blind may be placed below the slats and the
latter fastened direct under the head of the window.
A support for holding the pivot of the roller and at the same time securing the
same from revolution may be made as follows:
The bearing of each pivot of the roller is a continually narrowing slit, in which the
pivot of the roller is supported by a two-armed lever, which, governed by a cord, lifts
the pivots when required so as to enable them to revolve.
The slats may bo so supported as to be set at any angle.
To prevent the blind from falling on the breaking of a cord I use a double lever, of
which one arm is longer and heavier than the other; this heavier arm is normally
supported by the cord, when however this breaks, the lever falls and the opposite end
is so raised as to clip the broken cord against the side of the case so as to hold it from
slipping.
Dated this 13th day of November 1886.
HERBERT & Co.,
67, Strand, W.C.,
Agents to Applicant.

page_text: the like from direct sunlight or from too powerful a light, without obstructing the
view from outside, of objects disposed in such windows and without cutting off too
much diffused light to enable such objects to be properly or sufficiently illuminated.
The improved blind differs from such as are already in use in being a combination
of a slat blind with a cloth blind in which both blinds may be used at the same time
or either separately, the slats or cloth being adapted to be placed over any portion of
the window.
It is immaterial to the invention whether the slats be arranged above or below the
cloth, and whether they be adapted to he rolled or laid flat together.
Referring to the accompanying drawings Fig. 1 illustrates the cloth blind only
with rollers cords and devices necessary for the working of the saine.
Fig. 2 is a sido view thereof.
Fig. 3 illustrates a slat blind in combination with said cloth blind, with rollers cords
and devices for operating both.
Figs. 4 and 5 illustrate the safety cord clip in two positions.
Figs. 6, 7, 8, 9, 10, 11, 12 and 13 illustrate details and modifications.
Referring to Fig. 1. The blind R is wound upon the roller A the bearings of
which are carried by eyes a a borne by cords or bands bb wound upon the upper
Ono trunnion of the roller A carries the
roller Badapted to be turned by cord c.
drum A on which is wound a cord governed by weight k. The diameter of the drum
is preferably less than that of the roller A and the blind slightly heavier than the
counterpoise-When the roller A is close to the roller B, the blind resembles an
ordinary blind, on lowering the roller A and also unwinding the blind, the latter may
be caused to cover the lower upper or central part of the window. The counterpoise /
acts as a take up to wind up the blind as far as needful so as to prevent bagging or
folding of the same. The lower end of the blind is preferably provided with a rod M
having at each end a rectangularly bent projection N serving to guide the blind
evenly. A valance may be placed at the lower end to cover such projection.
A suitable number of venetian slats may be combined with the above described
blind either below the same as in Fig. 3 or above as in Fig. 8. The said slats are
In the blind shown in
preferably strung together upon ladders in the usual manner.
Fig. 3 the upper roller B is also shown replaced by a cross har B' accompanying the
roller A in the vertical movement of the latter. The lifter cords c d are then guided
over pulleys e e on such cross bar and pulleys/fattached in or to the frame of the
window. The safety cord clip shown on an enlarged scale in Figs. 4 and 5 may also
be arranged in the cross bar one for each cord c. d. The safety cord clip consists of a
balance lever one end of which forms a cams and the other an arm having an
upwardly turned and perforated end t, the cord being passed through such perforation.
As long as the cord is in tension the balance arm is held in horizontal position, as
soon however as the cord breaks the part falls, the cam s therefore moves upward
and holds the cord securely against the wall of the chamber or recess in which the
device is encased. The cross piece B may have attached to it a shield or roof u
(Fig. 6) for the protection of the blind R when rolled up. In the combination blind
shown in Fig. 3 the slats C may be secured together by allowing the blind R to
descend upon the sill of the window or other opening-The slats are thereby laid
together and the hooks a hinged to the cross bar E are placed under the lowest or
other slat, they being held in such position by springs o. By this means any
convenient number of slats may be held together, the others hanging below. The
hooks may be moved to release the slats, by pulling upon a cord or cords p operating
levers q to press back the hooks n. Springs w return such levers to their resting
position. In Fig. 3, the cord g from the roller A passes over pulley i to the weight k;
from the lower face of said weight the cord g¹ passes over pulleys m and and serves
for operating the winding of the roller A. In the modification shown in Fig. 8 in
which the slats (are above the cloth blind R the said slats are held in ladders and the
upper slat is adapted to be raised or lowered by a cord or cords (shown in dotted lines
in Fig. 8) passing through the roller B which is hollow. On turning said roller the
slats are wound up thereon and the roller A simultaneously raised.

page_text: Figs. 9 and 10 illustrate a device to be applied to the trunnions of the roller A or B
for fixing said trunnions, and cord guiding for the blind. It consists of an arm Z
having an angular recess or slot bearing the trunnion of the roller, over this arm is
a revolvable eccentric plate y pivoted at a to said arm, and having the curved flaring
slot g passing about the roller trunnion. The plate y has a downward extension or
arm D provided with a hole through which passes the pulling up cord-On pulling
the latter outward the plate y is turned until the trunnion of the roller arriving
between the continually narrowing sides of the slit is held fast therein. A tongue H
on the arın Z provided with a slit I serves to allow the roller to be horizontally
adjusted with regard to the wall frame or other stationary or movable object to which
it is attached. If a curtain is intended to be fastened outside, the tongue H is
dispensed with and a hole bored in the arm Z through which said arm is screwed to
the window frame.
Instead of the slat blinds shown in Figs. 3 or 8, such as shown in Figs. 11, 12, 13
may be used. The sides of the ladders supporting the slats C are attached by their
upper ends diametrically on a roller A, by turning this roller (for instance by endless
cord c) the slats may when lowered be given any angular position and may be wound
up on the roller to the front or to the rear-Such slats may be of paper or the like
linen or fabric, stiffened by steel springs.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. The combination of a cloth blind with slats for entire or partial covering of a
window or other opening by the cloth or by the slats or in part by both substantially
as set forth.
2. The combination of the roller A with counter weight & the cord of which
operates upon a drum the diameter of which is smaller than that of A.
3. The combination with the cloth blind R of rod M having rectangular
projections N at the lower end of said blind substantially as and for the purpose set
forth.
4. The combination with the improved slat and cloth blind, of cross rod B¹ having
roof and cords c d substantially as set forth.
5. The device consisting of cam s with arm having perforated end t in a casing
constituting a safety cord clip substantially as set forth.
6. The combination with a slut blind of a hook n with or without spring o and
lever
for the purpose set forth.
7. In combination with the slat blind C, the hollow roller B through which pass
the cords of the slat blind substantially as set forth and illustrated in Fig. 8.
8. In said improved combination blind slats laterally stiffened by steel springs or
equivalent means, and adapted to be wound the roller of said blind.
9. In said improved blind the combination of the arm Zadapted to be fixed to the
window frame or other fixed or movable object, and having a slit v, with a plate y
pivoted at having a continually narrowing slot g with the extension D for operation
by the roller cord or equivalent means for moving said plate y substantially as and for
the purpose set forth.
Dated this 3rd day of August. 1887