Improvements in Roller Blinds.
Year: 1891

page_text: Date of Application, 12th Sept., 1891-Accepted, 28th Nov., 1891
COMPLETE SPECIFICATION.
Improvements in Roller Blinds.
I, FRANZ HÜRTER of Cochem o/Moselle, in the Empire of Germany, Manu-
facturer, 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 purpose to produce roller blinds, in which, when they
are closed, all little boards or laths forming the blind can be at pleasure given
an inclined position, whereby smaller or larger air-or light-slots are produced
between the same so that such a blind can be used like a venetian blind.
Referring to the accompanying drawing,
Figs. 1, 2 and 3 represent the details of the improved blind, and
Figs. 4, 5 and 6 a complete blind in front view, vertical section and plan
respectively.
The laths a are on both sides revolubly lodged by means of carrying tubes 6 in
flat chain links c, which are so connected hinge-fashion with each other by means
of rivets d as to be revoluble about d and also adapted to be displaced relatively
to each other by means of slots provided at both their ends. The flat hand
chains thus formed on both sides of the blind are so guided in straight Ụ shaped
rails as to be prevented from bending out laterally when the blind is being let down,
which is done by means of chains or bands. Still more suitable for the latter
purpose is a flat thin steel band f, from which are partly punched out at corre-
sponding distances small openings, the cut-out parts being still connected with the
band and bent round to hinge-halves f', in which the laths a are revolubly held
fast at fie. at the steel band f by means of hinges secured to the laths. The
latter are pulled up wound on a roller in the usual manner and let down by means
of several such steel bands, the band chains ce being at the same time rolled up,
which can take place unimpededly owing to the slots provided in the links c. When
the blind is being let down, the laths a are suspended from the steel bands f until
the blind bears on, at the bottom, when the links c c shift themselves into each
other as far as their slots admit and finally rest firmly on each other. The blind
laths a are now partly carried by these links and partly suspended from bands ff.
On the latter being now let down lower, the laths a turn about their points of
suspension in the band chain links and, according as the bands ff are more or less
lowered, assume the position shewn in Fig. 3 in dotted and dash-and-dot lines
respectively; but they can be likewise fixed in any other inclined position.
In Fig. 1 and Fig. 4 on the right, the blind is shewn with the laths opened and
in Fig. 4 on the left and Fig. 5. with the laths closed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1) A roller blind, which is at the same time applicable as adjustable venetian
blind and characterised by its single laths a having each at both sides turning
pivots, which are lodged in the links c of two band chains, the connecting bolts a
of which are placed into slots d' of the links c and consequently admit of the
unimpeded rolling up of the laths with the band chain, while, on the letting down of
the blind, the single chain links c shift themselves into each other within the two
lateral guide rails e, thus fixing themselves and forming fixed fulcra for the laths a
revolubly lodged therein, whereby the latter can be placed uniformly more or less
inclined by means of the carrying bands f, substantially as set forth.
2) Carrying bands for pulling up and letting down roller blinds and so produced

page_text: from thin sheet steel or other suitable flexible sheet metal as to have at equal
distances so-called half punchings-out, which therefore remain on one side still
connected with the band, while the punched-out part is bent round hinge-fashion
and serves as hinge-half for receiving one of the roller blind lath hinges, substan-
tially as set forth.
Dated this 11th day of September 1891.
FRANZ
HURTER,
By Huelser & Co.,
His Agents.