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Патент USA US2110040

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l, 1938.
2,110,040 ,
Filed Jan'. 6, 1937
Patented Mar, 1, 1938
' 2,110,040
Morris L. Duskin and Hâïbert L. Magill, Chicago,
Application January 6, 1937, serial No. 119,184
17 Claims. (c1. 150A-17)v
lThis invention relates to Venetian blinds. One . connected or hinged together so that they will
object of the invention is to provide a blind of fold up when the slats are lifted by supporting
this .type adapted to be made of durable moisture- _ means independent of the straps for collapsing
proof materials so as to be readily cleanable and the blind in the usual manner. In addition, these
to resist deterioration. Another obîect is to pro
hinged links may be iitted with removable panels 5
vide a Venetian blind with supporting straps _of colored materiaL-preferably some synthetic
adapted to include ornamental color panels which composition,-sc that the straps may serve to add
may be changed at will to secure various decora
a decorative touch to the blind, which may be
tive color schemes. -Other objects will appear as varied by changing the panels of one color for
the description proceeds., The invention consists those of another, when desired.
in various features and elements of construction
. In the drawing, Figure- 1 shows a portion of a
' in combination, as hereinshown and described
and as indicated by the claims.
In the drawing:
Figure 1 is a face view elevation of a portion
of a Venetian blind constructed in accordance
with this invention, the upper supporting struc
ture being omitted, and the middle portion of
the blind being broken away to condense the-
_2o view.
Figure 2 is a plan view of one'of the slats.
Figure 3 is a detail section taken as indicated
at line 3_3 on Figure 1, showing the slats in
section and one pair of supporting straps in side
25 Y elelatlon.
Figure 4 is a detail elevation looking in the di-'
rection of arrows, 4_4, on Figure 3.
Figure 5 is a view similar _to Figure 4, on a
larger scale, and showing connected portions of
r 30 the slats in section.
Figure 6 is a detail section taken as indicated
at line 3_3 on Figure 5.
Venetian blind comprising slats, I, connected by
supporting straps each consisting of links, 2 and 3. -
As seen in Figure 2, each slat, I, has its longi
tudinal margins formed into tubular beads, 4, 15
which may be interrupted by notches, 5, cutting
through the beads, preferably near the ends of
Jthe slat to accommodate the supporting straps or
chains. The links, 3, of the straps include lat
erally projecting pivot studs or pintles, 6, which 20
extend into the tubular beads, 4, for pivotally
connecting the slats, I, to the supporting straps.
In each supporting strap or chain the links, 3,
alternate with the links, 2, so that one link of
each type constitutes a pair extending between 25
consecutive slats, I, I. Each link, 2, includes side
bars, 1, l, and infthe form shown these side bars I
are connected permanently by a cross-bar, 8. At
their ends the side bars are formed >with termi
nals, 9, which are apertured for pivotal connec- 30tion with the adjacent links, -3.
Each of the links, 3, includes side bars, ID, I0,
Figure 7 is a detail section taken as indicated which. in the form shown, are not connected to
35 at line 'I_'I on Figure 5.
each other but are held apart in spaced relation
Figure a 1s a datan section taken as indicated by a panel or filler, II, vwhich may be of any 35
at line 8_8 on Figure 5`-
I suitable material, and is preferably made of some
Figure ,-9 is a side viewof the pair of links
shown in Figure 5, and taken partly in section,
as indicated at line 9_9 on said Figure 5.
Figure l0 is a detail perspective view of a spring
catch device.
The usual construction for Venetian blinds in
` cludes ilat wooden slats and supporting tapes of
fabric connected by cross-tapes on which the45 slats are removablylodged, and which serve for
tilting them to various degrees of inclination, as
controlled by the manipulation of the tapes from
the supporting structure above. lThis invention
undertakes to supply an improved form of slat
50 which may be constructed of sheet metal, and to
supply a more durable and cleanly form of strap
which may also be made of metal. To render
these straps sui’ilciently flexible to permit'col
lapsing the blind in the usual manner, they are
A55 constructed of a series of rigid links pivotally
such synthetic material, as Catalin, Pyrolin,
Bakelite, Celluloid,A or some similar compound,
which may be, molded in the desired shape.
The >
side bars, III, I0, are formed with terminals, I2, 40
adapted to interlap the terminals, 9, of the links,
2, and said terminals include laterally projecting
pivots to engage the apertures of the terminals, 9.
At one end of the link, 3, the- pivots, I3, are only
long enough to extend into the terminals, 9, of
the next link, 2, but at the other end the pivots, 5,
are long-enough to extend through they terminals,
9, and into the adjacent ends of the tubular
bead, 4, of a slat, I. If the desired proportions
of the bead, 4, are such asto render it too large to 50
iit\snugly over the pivots, 6, the end portions of
the bead adjacent the notch, 5, may be formed
to a smaller diameter, as seen at I4 in Figure 5.
In assembling the parts the terminal lugs, 9, 9,
of one of the links, 2,wi11be positioned 1n a notch, 55
2,110,040 '
5, of a Slat, I, with> the aperturesof the lugs, 9,
aligned with the tubular terminals, I4, of the
bead, 4. 'I'hen the twoside bars, I0, I Il, of a link,
-3, will be moved into position carrying their piv
ment, and to limit them to the angular relation
seen in Figures 3 and 9.
Thus, when the links
are caused to fold by the lifting of the slats, I,
the initial angle between links, 2 and 3, will mere
ots, 6, through the apertured lugs, 9, and into the l ly be reduced, causing the pivots, I3, to move
bearing tubes, I4. At the same time, at the outward-that is, away from the' beaded edges
opposite ends of the bars, I0, I0, their pivots, I3, of the slats, I, until the links, 2 and 3, can col
will be ñtted into the terminal lugs, 9, of another lapse upon each other inA substantially horizon
link, 2. Then the filler block or panel, II, _is ‘ tal position, as seen in Figure 3. The terminals,
9 and I2, at which links, 2 and 3, are joined on
10 inserted between the bars, I0, I0, to hold them
_ apart in proper relation to the adjacent links, 2, 2-. the pivots, I3, are oiïset with respect to the side
For holding the panel, I I, in position it is provided bars, 1 and I0, so that the >faces of these bars,
which will meet in the folded position, lie in
with spring detent devices which may be con
structed of spring sheet metal formed, as shown planes extending through the axis of the pivot, I3,
and will' thus swing into a common plane when
15 in Figure 10, each with a cylindrical body portion,
I5, adapted to ñt into a bore, I6, formed in the ' the bars are folded. As indicated in Figure 3, „
edgeof the panelor filler block, I I. A bent spring the straps or chains at opposite sides of the
arm, I1, at the end of the cylindrical body, Il,y blinds are arranged to fold oppositely so that the
terminates in a rounded boss, I8, which stands , links, 2 and 3, in collapsed position are disposed
normally above the edge surface of the block, II, _outside the vertical planes between which the 20
but may be sprung inwardly into the recess which
slats, I, are included.
is a part of the bore, I6. Each block, II„ may be
provided with four of these detents, and each ofv
ATo insurefapleasing and relatively simple ap
pearance inthe ñnished Venetian blind employ
the side bars, I0, of the link, 3, is formed with
recesses, I9 and 20, respectively, (see Figures 'l
ing these features, the curved outlines of the f
terminall lugs Vor ears, 9 and I2, of the links may
be ofthe same diameter as the beads, 4, and will
gaged by the bosses, I8, of these detent devices be accurately aligned therewith; and the ñller
when the ñller, Il, is inserted between the bars, ` blocks, II, will be formed at their> ends with
and 8) near its opposite ends, adapted to be en
I0, I0. The ñller block is thus held removably
30 in position and serves to hold the side bars, I6,
in place so that their pivots, 6 and I3, shall re
main engaged with the terminals, 9, of the ad
jacent links, 2, and with the bearing portions, I4,
`of the bead, 4.
The link, 2, may also have a ñller block or panel,
_as seen at 2l, but since the side bars, 1,'1, arev
shown permanently connected bythe cross-bar, 8,
the function of the filler, 2|, is primarily decor
ative. It may be secured in place by forming the
40 inner faces of the side bars, 1, with channels of
V-shaped cross-section, as seen in Figure 6 at
22, and correspondingly forming the edges of «the
panel, 2l, so that it can be slidably inserted'be
tween the bars, 1, from the open end of the link
45 before the next link, 3, is assembled therewith.
A strap or chain made up of links, 2 and 3, .as`
just described, and connected at intervals to the'-v
slats, I, takes the place of the usual fabric straps-f
or tapes employed in Venetian blind structures-ì
for connecting the consecutive slats and Asup
porting them in the extended position of the blind.
For collapsing the blindv to draw it clear of the
window there is included a bottom bar, 23, which
may be simply the bottom slats of the series', sus
55 pended by cords or wires, 24, which pass through
suitable apertures, 25, 'in each of the slats, and
which are preferably positioned so as to register
with the connecting straps or chains composed of
links, 2 and 3, so as to be concealed from view.
60 Any suitable winding or operating gear, mounted
at the top of the window and not shown herein,
serves to draw the cords, 24, upward, thus elevat
ing the bottom member, which picks up the slats,
I, as it rises‘and collects them in a closely piled
cylindrically curved portions, 28 and 29, also of
the same diameter as the
aligned therewith. Thus
defined by the beads, 4, of
ried across the vertically
beads, 4, and axially
the horizontal lines
the slats, will be car
extending straps or
chains without substantial interruption, and, if
desired, the parts, 4 and II, may be similarly
colored s0 as to give the eiïect of continuous hori
zontal stripes in the structure.
vIt'may be understood that when the slats, I,
are formed of sheet -metal they may be of any
desired non-corrosive composition, or may be 40
given a. non-corrosive finish as by electro-plating
or by means of a suitable enamel, and that the
metallicvlink structures, 2 and 3, may also be of
such composition or ñnish as to avoid corrosion
or rust. The filler blocks, II and 2|, if made of
any of the,materials suggested, will be moisture
proof, and practically impervious to dust, so that
they ycan be readily cleaned when required.-v Or
dinary dusting and occasional treatmentl ,with a
damp cloth will thus keep `the blind indefinitely
in4 any attractive and cleanly condition.'
f ~
The method of construction permits of readily
disassembling the parts for substituting ñller
blocks, II and 2l, of va different color, if desired,
or for changing the slats, I, to those of a different
finish, if occasion arises, for altering the color
scheme. Asindicated in Figures 2 and 3, `the
slats may bereinforced adjacent the notches, 5,
if desired,by¿fcrming upwardly projecting ribs,
30, in theirñat surfaces to insure perfect align
ment of the end portions of the beads, 4, with
the intermediate parts.v
While there is shownand described herein cer
tain specific structure yembodying the invention,
formation, as seen inthe lower portion of the > it will bemanifest to those. skilled in the art that 65
various modifications and re-arrangements of the
view in Figure 1, and also in Figure 3. To per
mit this close pilingof the slats, I, the links,'2 ~ parts may be madewithout departing from the'
and 3, connecting each pair of adjacent slats, I, ` spirit and scope of the-invention, and that the
must fold upon each other, as seen in Figure 3.
70 To insure that they will fold automatically and
in‘a deñnite direction, the interlapping terminals’f
same is not limited tothe particular vforrn herein
shown and‘described, except in so far as indi
cated-bythe appended claims.~ v ,
~_ '
9, at the pivots, I3, are formed with ñat surfaces,
26, which abut corresponding flat surfaces, 21,
on theside bars, IIJ, so as to prevent the unfold
75 ing of- adjacent links, 2 and3, into strictalign
1. In a Venetian blind structure a series of
slats composed of sheet-metal and each having its
longitudinal margins' shaped 'toA form tubular
beads, each slat having notches cut through said
beads, and supporting straps accommodated in
said notches, each strap comprising a series of
rigid links hingedly connected, end to end, with
laterally projecting pivots engaged in the beads
of the slats.
2. In a Venetian blind structure as deñned in
claim 1, separate straps engaged with the beads
at opposite margins respectively of the slats, and
10 each strap being composed of links in pairs with
a pair extending between adjacent slats of the
blind, the hinge joints of each pair intermediate
minals apertured for connection oi' the side bars
with intermediate links, each intermediate link
consisting of side bars with outwardly projecting
pivot studsvat their terminals whereby the filler
serves to hold said bars apart with their pivots
engaging the apertured terminals of the said
alternate links, the pivot studs at one end of each
of said intermediate links extending through and
laterally beyond the terminals of the connected
link for engaging a slat of the blind.
' 10. In a Venetian blind structure, a series of
slats composed of sheet metal and each having
its longitudinal margins shaped to form tubular
beads, each slat having notches cut through saidj
15 topermit their folding or collapse in one direc
beads and supporting straps accommodated in
tion only, the joints of said separate straps at said notches, each strap-being composed of rigid 15
-opposite edges of the slats being adapted to col- - links hingedly connected end to end, and each
lapse in opposite directions.
alternate -link comprising a pair of side bars
3. In a Venetian blind structure as defined in spaced apart with a ñller removably secured be
20 claim 1, said links including terminal portions» tween them, the other links including apertured
of a contour axially aligned with the tubular terminals adapted to lap the ends of said side
beads of the slats and of the same shape so as to bars, and the side bars having outwardly pro
appear as substantially continuous therewith.
jecting pivot studs extending through the aper
their connections with the slats including _means
*_limiting the relative movement of adjacent links
4. In a Venetian blind structure as deilned in
25 claim 1, the links of said straps each comprising
a pair of side bars and an interposed filler, the
tures of said terminals and into the tubular beads
adjacent the notches of the slats.
11. In the construction deñned in claim 6,
ends of said side bars and of said iillers occupying
the notches of the slatsl being co-axial with vthe
tubular beads of the slats and of the same shape
30 in cross-section.
5. In a Venetian blind structure, a series o_f
spring detents disposed for removably securing
slats, and supporting straps each com‘posed of a
said i'lller blocks in. place between the -side bars
of the links.
12. In the construction defined in claim 6, the 80
opposing faces of the side bars having recesses
and the iiller blocks being provided with spring
detents adapted to engage said recesses when
series of~ rigid open links hingedly connected,
means connecting said slats to the straps, and _ the filler blocks are positioned between the side
N ornamental ñller panels fitted removably in the bars.
openings of the links to produce a decorative
13. In a Venetian blind structure, a series oi’`
slats each composed of sheet material with its
6. Astrap for a Venetian blind comprising a longitudinal marginsv shaped to form tubular
series of _links hingedly connected end to end, beads, said slats having notches cut through said
40 each link comprising a pair of vside bars spaced
beads, supporting straps each composed of a 40
apart `with a filler blocky secured between them, series of rigid links hingedly connected, and
said bars having terminal portions formed for pivotal means projecting laterally at alternate
the pivotal inter-connection of adjacentv links with
hinge joints of each strap' and directly engaging the terminals of one link disposed between the in the open ends of the tubular bead of a slat
45 terminals of the next link whereby the ñller 'at opposite sides of the notch therein.
block of the ñrst mentioned link serves‘to main*
14. In ,a Venetian blind structure, a series of
tain the pivotal connection of said terminals.
.slats each formed with‘marginal beads notched
’7. A strap for a Venetian bl‘ind comprising a to accommodate lsupporting straps, and straps
series of links hingedly connected end to end, each composed of a series of rigid links hingedly ~ ^
each link comprising a pair of side bars spaced connected, together with p'ivot means each co 50
apart with a ñller block secured between them,
said bars'having terminal portions lsome of which
are apertured and others of which are provided
with pivots to engage such apertures, the filler
blocks of alternate links serving to maintain such
pivotal engagement.
8. _A strap for a Venetian blind comprising a
axial wlth a hinge connection of the links and
projecting laterally into direct pivotal engage
ment`wlth a-longitudinal bead of the slat at oppo-_ , ~
site sides of the notch therein.
15. In a Venetian blind structure, a series of 55
slats each formed with marginal beads notched
to accommodate supporting straps, and straps
series of links hingedly connected end to end, each composed of a series of , rigid links hingedly
each link comprising a pair of side bars spaced l connected, together with pivot means each co
apart with a ller removably secured between axial with.a hinge connection of the links'and 60
, them, the side b rs of alternate links being per
projecting laterally into direct pivotal engage
i manently joined by a cross-bar, and having'ter
«v minals apertured for connection with the side
bars of intermediate links, each intermediate link
ment with a longitudinal bead of the slat at
opposite sidesv of the notch therein, each pair
of adjacent slats being connected by two links
of a strap, and the hinge connecting the two 65
having its side bars -provided with outwardly pro
jecting pivot studs at their terminals, whereby
links including features which limit the relative '
the filler serves to hold said bars apart with their
movement of the links and permit their folding
‘ pivots engaging the apertured terminals of the
for collapse in one direction only so as'to carry
" ì said alternate links. g
9. A strap for a Venetian blind -comprising a
- series of links hingedly connected end to end,each link comprising a pair of side bars spaced
apart with a rlller removably secured between
them, the side bars of alternate links being per
75 manently `joined by a cross-bar. and having ter
said links and their connecting hinge outwardly
away from the vertical plane of the blind.
16. In a Venetian blind structure, a series of
slats notched at their edges to accommodate sup- `
porting straps,‘and straps each composed of a
series of rigid links hingedly connected, with piv
otal means at each alternate hinge` connection
2,1 10,040
' 4
of the strap projecting laterally into pivotal en
series of rigid links hingedly connected, with
gagement with a slat at opposite sides of the
pivot means at each alternate hinge connection
projecting laterally into the tubular bead of a
slat at opposite sides of the notch for directly
connecting the slat to the strap.
notch therein.
- 17. In a Venetian blind structure, a series of
slats leach composed of sheet material with a
longitudinal margin shaped to form a tubular
bead, said margin being notched to accommodate
a supporting strap, and a strap composed of a
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