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31,1946.'
A. NIH'QN
> 2,413,464
VENETIAN yBLIND
Filed March 27, 1944
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Dec. 3l, 1946.
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2,413,464l
VENETIAN BLIND
Filed March 27, 1944
2 Sheets-Sheet 2
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Inventor
Attorneys
y
Pstenied'nec. 31, 1946
' 2,413,464
UNITED STATES PATENT OFFICE
2,413,464
VENETIAN BLIND
Alexis Nihon, Dorval, Quebec, Canada
Application March 27, 1944, Serial No. 528,217
1 Claim. (Cl. i60-173)
1
_
The present invention relates to blinds and,
more particularly, to glass Venetian blinds.
The primary object ofthe invention resides in
the provision of a Venetian blind having im
proved light-transmitting properties and of high
ly decorative character.
Another important object resides in the pro
vision of a Venetian blind which, gathering less
dust, could be kept spotless for longer periods of
2
cut edges were of no commercial value and pre
sented a proble of disposal to the glass maker.
As an example, and for purposes cf illustration
only, two possible forms of the invention are
shown in the annexed drawings, wherein:
Figure 1 is a perspective view of a Venetian
blind constructed according to the invention and
constituting the first and preferred form,
Figure 2 is a fractional perspective view of a
time and be such as to be easily cleaned and un
glass slat, or blade, according to the invention,
affected by water and detergents.
Still another object is the provision of a blind
3-3 of Figure 1,
of the character described, having means for re
moving and installing all, or individual, slats,
rapidly and without disturbing the remaining
slats or blades.
Figure 3 is a vertical section taken on the line
,
Figure 4 is a view> similar to Figure 3, but show
ing the glass slats in closely contacting position
as when said slats are inclined when the blind
tively inexpensively and simply out of easily pro
is closed,
Figure 5 is a perspective Aview of a Slat-retain
ing clip shown in Figure l,
Figure 6 is a_ fractional plan view showing the-
curable materials.
construction of said clip,
A still further object. concerns a Venetian blind
of the type defined, which can be assembled rela
'
-
An additional object contemplates a Venetian
' _ blind adapted to close tight and thus act as an
l
Figure 7 is a transverse section of the clip
taken on line 7_1 of Figure 5,
insulator against convection heat losses.
A further additional object resides in the pro
vision of a Venetian blind having light-diffusing
Figure 8 is a vertical section taken through the
second form of the invention,
and reflecting properties to act as an insulator
9--9 of Figure 8,
Figure 9 is a sectional view taken on the line
Figure 10 is a transverse vertical section taken
against heat radiations.
on the line lll-l0 of Figure 9,
_
Other objects and advantages of the invention
Figure 11 is a perspective View of the clip used
will become apparent, or be further pointed out,
30 in the form of Figure 8 and shown therein as well
during the description to follow.
as in Figure 10, and
In order to meet the objects enumerated above,
Figure 12 is a transverse section of the clip
the material to be chosen for the slats had to
taken on line |2-l2 of Figure 11.
have specific properties of hardness, stiffness,
Referring to the drawings, wherein similar ref-'
l transparency and heat insulation, such as are
possessed only by glass.
35 erence characters represent corresponding parts
throughout, the letter “A” designates generally
The cost and other difficulties inherent to this
-the type of slat preferably employed according
material were a drawback, until it occurred to the
to the present invention and constituted, as pre
inventor that the scrap glass, cut from the edges
viously stated, of the bulb-edge or bead 40 cut
of sheets drawn in the Fourcault machines, known
as bulb edge glass, would be ideally suited for the 40 from glass drawn in the Fourc'ault machines.
Said slats, after being cut to length and suitable
purpose in view. Notwithstanding the fact that
width, are treated in an acid etching bath to give
said single thickness glass is thrown away, and is
the sarne a ñnely ground or frosted surface. The
therefore obtainable cheaply, its other character
purpose of this> treatment is to render the slats
istics render it adaptable to use in Venetian blinds
according to the invention.
45 translucid so that light may ñlter through when
the blind is closed, but afford the necessary pri
The use of said bulb-edge glass renders possible
vacy to the user of the blind. Furthermore, the
the useful reclaiming of hundreds of thousands
etching treatment has for a result to take off
of feet of narrow, single-thickness glass thrown
the sharp edges from the slats and render the
away by glass makers daily throughout the world.
As is well known, said bulb-edge or bead is auto 50 same available for immediate use after frosting.
The mechanism for operating a' Venetian blind matically produced on the glass sheets drawn in
according to the invention may be constituted of
the Fourcault machines; said edge must be re
substantially the same elements as are used for
moved from the sheets, because it is harder and
conventional blinds having Wooden or fibre slats.
with non-parallel faces. Except for some limited
use as shelving, in the multiple thicknesses, the 55 The usual suspension means may be employed,
2,413,404 `
3
which consist of vertical parallel tapes "T"
As in clip Il, the lug 29 is apertured at 3B and
joined together at regular intervals by horizontal '
the slats. Normally, said tapes are secured to an
oscillating bar concealed within a header-box
“B," said bar being actuated by a suitable mecha
furthermore provided with a very small eyelet
formed at the extreme edge or apex of said lug.
A Venetian blind constructed according to this
modified form and including the clip just de
scribed is shown in Figures 8 and 10 wherein the
nism operated by the manipulation of the drop
conventional elements already defined will ‘be
cord "D” (see Figure 1). Thus, as is well known,
the slats may be inclined at will to control the
found, such as: the header-box “B," the suspen
sion tape “T” and cross Slat-supporting tapes.
light admitted and the visibility through the
It will be noted, however, that the supporting
cross-tapes “C” adapted to bear the weight of
tapes of this modiñed form, as shown in Figure
blind.
Inasmuch as an object of the invention is the
9, consists of spaced narrow tapes instead of the
easy removal of individual blades, said blades
usual full-width tape generally used. Said nar
row tapes “N” _are spaced from each other in
A are not apertured as is usual to permit the pas
sage behind the tape of a draw cord secured to 15 order to provide an inner channel “F” therebe- '
the lower bar of the blind and adapted to raise
the blind when desired, Instead, according tothe invention, the glass slats are left unperforated
and provided at each end with a metal clip
tween for the passage of draw-cord “G” between
said narrow tapes and in the aperture 30 of the
and which, therefore, retain the slats in place
and prevent their longitudinal axial displace
before, it is not convenient, practicalor desired
lug 29 formed on clip 25. Therefore, the clip as
well as the draw-cord, are at least partially hid
through which the draw-cords “E” are threaded 20 den from View by the tapes “'I‘" when, as stated
to have the clip on the outer end of the slats
as in Figure 1.
As a further precaution against longitudinal
Notwithstanding the fact that the slats are un
perforated, as the perforation of glass would 25 sliding movement of the slats, the eyelet 3|, pro
vided on the lug 29, may be stitched to the front
present some diiliculties and reduce its ilexibility `
tapes “T," as shown in Figures 9 and 10. Thus,
as well as weaken its resistance to breakage, the
ment.
l
the clip being secured to the tape, said clip effec
tively prevents movement of the slats and fur
cleaning of the slats since no interfering cord
exists and, besides, permits the easy removal of 30 ther assists in the proper positioning thereof
when it is desired to tilt the same away from
individual members for replacement purposes due
arrangement described above facilitates the
their horizontal position.
Due to the increased weight of glass slats as
The clip shown in Figure l and generally indi
compared with wooden ones, an arrangement is
cated by the reference character I5, may consist
of a strip of springy material folded lengthwise to 35 shown in Figure 8 for facilitating the raising of
form parallel spaced jaws I6 and I'I respectively.
the blind, or the folding thereof, when it is de
sired to dispense therewith. The draw-cord “E”
The jaw Il is~slitted transversely at I8, from the
is not secured at its free end to the lower bar of
outer edge to a position >near the back edge I9 of
the blind, as is usual, but instead is attached at
said clip. The purpose of said slit is to facilitate
the insertion of the clip on the end of the glass 40 one end to the header-box “B,” the downward
reach of this cord being passed behind the back
slats which, as shown in Figure 2, are of unequal
tapes “C” and trained over the rollers 35 under
cross-section (see Figures 3 and 4).
neath .the lower bar “L” of the blind, said cord
formed as an extension of the back edge I9, in
extending upwardly thereafter through the aper
a plane substantially that of the jaw I6, said lugbeing cut in the jaw’ I6 and bent back 180° from 45 ture 30 of the lug 29 behind the front tape “T”
said jaw, as shown in Figure 7. Consequently,
until it reaches the header-box “B” where it is
passed over a second pulley 36 shown in dotted
the lug 20 being apertured at 2l, the draw-cord
lines in Figure 8. The end 31 of said cord hangs
"E” can be passed through said aperture 2I
downwardly in the usual manner, According to
which, being in line with the central axis of the ‘
slat, allows inclination thereof without interfer 50 the well-known physical principle of the double
pulley, the arrangement just described permits
ence with said cord. Furthermore, as previously
'the raising of the blind with half the effort that~
stated, the draw-cord “E” threaded through the
aperture 2l of the clip I5 effectively prevents
would have to be expended otherwise.
From the foregoing disclosure, it will be evi
sliding motion of the individual slats which, as
to breakage or anyV other reason.
a result, are retained perfectly in line.
55 dent that the present invention isv an advance
Under conditions of use or situation where the
of the art of Venetian blinds in that, according
end clip I5 of the blind would be objectionable,
a` modified form of the invention can be used
instead, which is shown'in Figures 8 to 12 and
which includes also a special pulley arrangement 60
for facilitating the raising of the blind. This
modified' form of the invention includes also a
clip to secure the slat against sliding movement,
said clip, however, engaging the slat on the bulb
ous edge behind the tape used for supporting 65
said slat. This clip is shown in Figure 11 and
is substantially the same as the clip I5 already>
described. The modified clip generally indicated
at 25 is also made of springy material and in
cludes spaced parallel jaws 26 and 21 respectively, 70
joined together by the tubular back edge 28 so
formed as to accommodate the bulb edge of the.
slat. The lug 29 is stamped from the jaw 21 and
bent back in a plane _therewith to extend at
right angles to the axis of the back edge 28. 75
to said invention, it is possible to obtain lighting
effects not obtainable otherwise, secure advan
tages of stability against deterioration by the
elements, water and detergents, and permit the
removal or replacement of individual slats with
out disturbing the blind as a whole.
More particularly, the translucid qualities of
the glass slats permit the utilization of a max
imum of day-light, while affording complete
privacy whenever artificial inside lighting is de
sired in addition. Again, light being a good heat .
insulator, the closed slats constitute, when tightly
closed, a glass wall which in front of a window,
imprison a layer of air providing'additional in
sulation against convection heat losses. And,
glass being a good reflector, the radiant heat en
ergy emanating from the sun or, conversely, from
inside heated surfaces, heat radiation through
2,413,464
moved. The net result is a slat that stays cleaner
longer and can be restored more easily to its ori
vented.
In connection with the heat insulating proper
ties of the glass against radiation, it is pointed
out that in certain cases it is quite feasible to
ginal cleanliness.
It must be understood that the forms of my
invention- herein shown and described are to
betaken as preferred examples of the same, and
that various changes as to the shape, size and
arrangement of parts may be resorted to, and
glass-like materials such as plastics be substi
tuted, without departing from the spirit of the
coat one face of the blind with a metallic coat
ing such as silver or aluminium, whereby the
slats may act as a perfect reflector and mate
rially aid in keeping cool, in the summer, rooms
and the like exposed directly to the sun. Even
without this metallic coating, it has been found
that the lroughened surface of the slats, when
closed, effectively diffuses the direct rays of the
sun so that a very soft lighting is the result;
in other words, the ground glass surfaces let in
day light but, ñlter out the glare and heat rays
6
not penetrate said surface and can be easily re- ì
the glass-Venetian blind is substantially pre
invention or the scope of the subjoined claim. `
Having thus described my invention, I claim:
In a Venetian blind, translucent slats having
lus
of the sun. Consequently, a room exposed to the
direct rays of the sun is much more comfortable.
Another advantage of the acid-etched surfacev
cfa the glass slats is that said surface is exceed 20
ingly smooth and. as a result, does not retain
dust as readily as ordinary conventional slats;
since the etched surface ofsaid glass slats is
not porous, it is evident that dirt and dust does
a substantially flat body and a bead at one edge
thereof, whereby said slats can be inclined in
closed bead-to-bcdy position, supporting, raising
and actuating means for said slats, and bead
fitting Slat-aligning means removably retained
by the beads of the slats and engaged by the slat
raising means independently of the supporting
means.
ALEXIS N'IHON.
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