close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2409822

код для вставки
Oct. 22, 1946.‘
'
MWALBRECHT.
2,409,821
VENETIAN BLIND
Filed March 5, 1945
'37 27 /
s
26
Aim/"megs "
2,409,821
PatentedOct. 22, ‘1946
UNITED'STATES PATENT OFFICE
2,409,821
VENETIAN BLIND
Max W. Albrecht, Chicago, Ill.
Application March 5, 1945, Serial No. 581,067
9 Claims. (01. 160—34)
2
1
This invention relates to a new and improved
type of Venetian blind and more particularly to
a Venetian blind which is normally closed.
One of the objects of the invention is to provide
a new and improved type of Venetian blind which
normally assumes a closed position and may be
readily adjusted to any predetermined open po
sition.
A further object of the invention is to provide
a Venetian blind characterized by simplicity of 10
structure and ease of operation.
An additional object of the invention is to pro
vide a Venetian blind in which the cord or other
ure é and to enclose or house the, operating mech
anism hereinafter described.
‘
.
j
The entire top portion of the blind, including
the cover 6, is carried on opposite sides by wall
brackets ‘l and 8, which are fastened to the wall
in any suitable manner, for instance, by means
of screws, nails or the like. As will be under
stood the invention is not limited to the use of
any particular type of wall bracket.
The principal parts of the operating mecha
nism comprises a shaft 9 supported adjacent its
ends by suitable brackets l0 and l I, Which in turn
are fastened to the top of bar I by means of
screws l 2 and I3, or in any other suitablermanner.
means for opening the blind does not have to be
Referring to Figure 3, it will be observed that
adjusted at intervals as is usually necessary with 15
the bracket It! has the general shape illustrated
the ordinary type of Venetian blind.
and is provided with an opening ‘14 to permit the
Still a further object of the invention is to pro
insertion of a bearing l5,'which is held. in place
vide a new and improved type of Venetian blind
by a press ?t and by means of the ?anges I6 and
characterized by a new and improved structure
for fastening the tapes at the top of the blind.
20 Il (see Figure 1). The shaft 9 rotates freely in
the bearing 15 and is surrounded by coil spring
An additional object of the invention is to pro
18. One end 19 of‘ the coil spring 18 is fastened
vide a new and improved Venetian blind so con
in a hole 2!! in the shaft 9 and the other end 2|
structed that the principal working parts at the
of the spring I8 is inserted in any one‘of the
top of the blind are enclosed in a housing
Other objects and advantages of the invention 25 holes 22, 23, 24 or 25 in the bracket Ill. As will
be understood, the tension of the spring l8 may
will be apparent by reference to the following de
be increased or decreased by moving the end 2|
- scription in view of the accompanying drawing,
to a different hole.
,
in which,
The spring [8 functions to rotate the shaft 9 in
Figure 1 represents an elevational View with ‘.
parts broken away of a new and improved type 30 a clockwise direction when viewed from the right
side of Figure 1. The tension on the spring 18
of Venetian blind provided in accordance with
may be decreased by removing the end 2| from
this invention;
the hole 22 and inserting it in any one of the holes
Figure 2 represents a sectional view taken along
23, 24 or 25. The least amount of tension being
the line of 2-—2 of Figure 1;
p
'
exerted when the end 2! is inserted in the hole
Figure 3 represents a sectional view taken
25. It will be understood that some other type‘
along the line 3—3 of Figure 1;
of mechanical means may be provided to perform
Figure 4 is a side or end view of the blind shown
the same function without departing from the
in Figure 1;
invention. The provision of means for adjusting
Figure 5 is a top or plan view of the ?gure ‘
shown in Figure 1 with the dotted line or cover 40 the tension on the spring 18 is desirable because
the force required to automatically close the blind
portion removed;
as hereinafter described may vary somewhat de
Figure 6 is an isometric view showing the man
pending upon the size and shape of the blind
ner in which the Venetian blind slats are locked
and the weight of the slats.
in open position;
The shaft 9 is mounted on the righthand side
Figure '7 illustrates the cover portion of the 423
in a bearing 26 supported in the bracket II. The
blind shown with parts broken away in Figure 1;
bearing 26 is similar to the bearing !!5 and is
Figure 8 illustrates a portion of the guide sup
held in the bracket I l in a similar manner. The
porting elements for the cord as hereinafter deg
movement of the shaft 9 in a lateral direction is
prevented on one side by the spring I8 pressing
The blind shown in Figure 1 comprises a top‘
against the shoulder ll of the bearing l5 and on
bar I provided near the lower side thereof on
the other side by a collar 2‘!- held in place by a
each lateral side ‘with ?anged or projecting por
set screw 23 or other suitable means. The collar
tions 2 and 3 (see Figure 4) . The ?anged or pro
2'! is disposed closely adjacent to the shoulder 29
jecting portions 2 and 3 are formed in any suit
of the bearing 26. The tapes 30 and 3! of the
able manner, for example, if the bar is made of
Venetian blind are mounted in a ?xed position
wood a recess or channel is cut on opposite sides
with respect to the shaft 9 by means of suitable
of the bar at points 4 and 5. A cover 6 shown in
fastening devices 32 and 33, which are of identi~
full in Figure 7 and with parts broken away in
scribed.
‘ '
cal construction. As shown in Figure 21, the tape
Figure 1 is adapted to sit on the ?anged portions
2 and 3 of the bar I in the manner shown in Fig (it) fastening device 32 comprises an upper plate-like ,
2,409,821
member 34 and a lower plate-like member 35.
A bolt or a pin 33 having one end threaded
passes through the shaft 9 and suitable holes in
the clamping plates 34 and 35 and is provided at
the upper end with a wing nut 3t which, when 5
the passage of the cords 43 and 53.
The supporting or top bar l is provided with
screwed downwardly, presses against the top of
relatively large rectangular openings 69 and 10
ing from the general principles of the invention.
The slats 36 may be of the conventional type and
are provided with openings 31 and 68 to permit
the clamping element 33 and forces it in the
shown in Fig. 5 through which openings descend
direction of the clamping element 35. The end
the tapes 30, 3| of the blind which are suspended
38 of the tape 30 is inserted between the clamping
from the clamps 32, 33 and the cords 33, 53 which
elements 33 and 35 on one side and the end 39 10 are employed for the purpose of raising and low—
of the tape 40 is inserted between the same
ering the blind. It will be seen that the rec
clamping elements on the opposite side in the
tangular openings shown in Fig. 5 are larger in
manner illustrated in Figure 2, and thus the
area than the tape fastening device 32 which, of
tapes are held in a, clamped and fixed relation
course,'will permit the tapes to descend vertically
ship with respect to the shaft 3.
Oneach side of the bolt 36 an opening Ill is
provided in the lower clamping plate 35 to per
mit the insertion of a novel type of supporting
15
downward through the rectangular openings, il
lustrated in Fig. 5, without subjecting them to
any crowding action which might result from
passing them through slotted openings.
element 32 for the cord 43, which serves to raise
and lower the Venetian blind. The supporting
element 42 comprises a thin strip of metal 33
Venetian blinds of the type herein described
can be readily taken down for cleaning and,
if desired, may be easily dismantled for the re
orother suitable sheet material, which is initially
placement of tapesand cords. To remove the
out in the general shape of an O, as illustrated
blind from the brackets l and 3, it is pulled
in Figure 8, and provided with holes 45 and 46.
outwardly. Thereafter it is a simple matter to
The metal strip 44 is placed over the shaft 3 25 lift the topmember 6 ‘from the top bar I expos
with the central opening 47 over the stud or bolt
ing the operating mechanism as it appears in
36prior tothe assembly of the clamp 32 and the
full lines in. Figures 1 to 6. The tapes can
ends containing the holes 45 and 33 are bent
then be readily removed by loosening the wing
downwardly and fastened together by a suitable
nuts 31 thereby loosening the clamps 32 and 33
means such as the stud v(it provided with head 30 and permitting the ends 38 and 39 of the tapes
elements ~43and 50.
As shown in Figure 2, the
stud-48 has mounted thereon a pulley 5 l, which is
free to move with the movement of the cord 43.
The member 52 is similar in construction to the
member 42 and in a similar manner serves to
to be pulled outwardly.
If it is desired to dis
mantle the blind further, which would ordinarily
be unnecessary except 'in the case of a major
repair, the wing nuts 3'! can be removed entirely.
It is then possible to lift oil the clamping ele
guide the cord 53. The cords 33 and 53 pass
ments 33 and 35 exposing the top of shaft 9.
between transverse tapes 54, 55 and 55, 53 in a
The end 2! of the spring l8 can then be dis
conventional manner. As shown in Figure 1, the
engaged from its slot and ‘the end I?! of the spring
pulley supporting members 42 and 52 are prefer
lB'oan be removed from the hole 23 in the shaft
ably offset slightly with respect to the studs '36 40 9, the bolts 35 in the shaft ll can also then be
to permit the cords 43 and 53 to pass centrally
removed and the set screw 28 (see Figure 5) in
between. the transverse tapes 54, 55 and 55, 51.
the collar 2'? can be loosened. ‘The chain 6!
The Venetian blind may be raised and lowered
is removed from the slot 54 and the entire shaft ‘
by pulling on the double cord 53 which is a con
will slide easily through the bearings l5 and 23.
tinuation of cords 43 and 53. A‘conventional 45 The collar 2'! and the pulley supporting members
type locking‘ member 59 is provided to hold the
Hand 52 are readily removed from the end of
blind in a raised position.
the shaft. If necessary, the bearing members l5
On .the‘lefthand side of the shaft 9 a pulley
and ‘26 may be removed by pulling them out. of
33 vis provided to which is fastened in any suitable
the opening Ill in the shaft supporting elements
manner-one end'of a chain 3!. As shown in 50 I0 and H . The Venetian blind is reassembled in
Figure 6; the chain 3! isadapted to be held in
the reverse order by passing the shaft 9 through
a ?xed predetermined position by means of a
the bearing member it, then placing the spring
locking plate: 62, which is fastened to the top
[8, the pulley supporting members .32 and 52
of the bar I by screws 33 (see Figure l) or in any
and the collar 27 over the end of the shaft in
suitable manner. The locking plate 62 has a 55 that order, thereafter inserting the bolts 33, ?x
wedge-shaped. opening 33 and is relatively thin
ing the spring iii in place in the manner already
so that it will pass between beads 35 of the chain
described, tightening the set screw 28 with the
in the manner shown in Figure 6. Thus, when
collar 2'! adjacent the bearing 26 and assembling
the chain is pulled downwardly the'shaft 9 is
the clamping members and tapes, as previously
rotated in a counter-clockwise direction against 60 explained.
~
,
the pressure of spring '58 and the slats 63 of the
The Venetian blind structure of the type de
Venetian blind are opened to any predetermined
scribed herein has the advantage that the blind
position and can beheld in that position by look
automatically assumes a closed position when the
‘ing the chain Si in the opening. 33 of the locking
chain or pull cord 5| is released. This arrange
plate 32. When it is desired to close the'slats 65 ment overcomes one of the disadvantages of the
of the blind,‘the chain 3! is pulled outwardly to
type of Venetian blind now used wherein a double
disengage it from the recess 64 of the locking
pull cord is employed to open and. close the
plate 62, the shaft 9 is then rotated in a clockwise
slats.‘ The pull cords of the type customarily
direction due to the action of the spring i3 and '
usedare ordinarily placed over a pulley and when.
the slats of the blind are} automatically closed. ~ 70 pulled in one direction rotate a top bar to which
It will be understood that the invention is not
the tapes are attached to close the slats and
limited to the particular type of device shown for
in the other direction to open them. Thecord
locking the slats of the blind in a predetermined
often tends to slip so that one end of the cord
open position, and that other variations may be
becomes longer than the other making it impos-;
I made in the structure described without depart 75 sible for a shorter person to reach the other end
2,409,821
5
6
means releasably associated with said last named
means for holding the latter in a ?xed position
the pull cord at frequent intervals, which is
to cause said slats to remain in a predetermined
inconvenient and sometimes rather difficult.
open position irrespective of the force tending
Furthermore, if the cord slips far enough, it is
to urge them toward a closed position.
not possible to close the blind without an adjust
5. A Venetian blind comprising a rotatable
ment of the cord. The present invention elimi
shaft, fastening means comprising two pair of
nates these difficulties.
clamping members ?xed to said shaft for detach
Another feature of the invention resides in
ably fastening the ends of slat supporting tapes,
the provision of a structure in which the tapes
that hold the slats are detachably fastened at 10 means operatively associated with said shaft for
normally rotating it in a direction to cause said
the top of the blind without the necessity for
tapes automatically to move the slats supported
using nails, as is customary in the usual type
by said tapes toward a closed position, means op
of Venetian blind. Moreover, the mounting of
eratively associated With said shaft for rotating
the tape clamps on a common shaft eliminates
the need for one of the heavy top bars here 15 it to cause said tapes to move said slats to a pre
determined open position, and means releasably
tofore customarily employed in Venetian blind
associated with said last named means for hold
construction.
ing the latter in a ?xed position to cause said slats
Having thus described the invention, what I
to remain in a predetermined open position irre
claim as new and desire to secure by Letters Pat
20 spective of the force tending to urge them toward
ent of the United States is:
a ‘closed position.
1. A Venetian blind comprising a rotatable
6. A Venetian blind comprising a ?xed upper
shaft, tape supporting means detachably fas
supporting bar, a shaft rotatably supported from
tened to said shaft for supporting the slats of
said bar, fastening means ?xed to said shaft for
the blind, means operatively associated with said
shaft for normally rotating said shaft to move 25 fastening the ends of slat supporting tapes, means
operatively associated with said shaft for nor
said tapes with respect to each other to cause
mally rotating said shaft in a direction to cause
said slats automatically to assume a closed posi
said tapes automatically to move the slats of said
tion, means for rotating said shaft to cause said
blind toward a closed position, means operatively
tapes to move said slats to a predetermined open
position, and means releasably associated with 30 associated with said shaft for rotating said shaft
to cause said tapes to move said slats to a prede
said last named means for holding said shaft
termined open position and means releas-ably as
against rotation when said slats are in said open
sociated with said last named means for holding
position whereby when said holding means is
the latter in a ?xed position to cause said slats to
released said shaft will rotate and said slats will
35 remain in a predetermined open position irre
automatically assume a closed position.
spective of the force tending to urge them toward
2. A Venetian blind comprising a rotatable
a closed position,
shaft, tape supporting means fastened to said
'7. A Venetian blind comprising a ?xed upper
shaft and extending transversely with respect to
supporting bar .for the blind provided with holes
the longitudinal axis thereof, a distance substan
tialy equal to the front-to-rear spacing of a 40 for the passage of the upper ends of slat sup
of the cord. As a result, it is necessary to adjust
pair of Venetian blind tapes, said tape supporting
porting tapes therethrough, a shaft rotatably sup
ported on the top of said bar, fastening means
means comprising a pair of clamping elements
?xed to said shaft for detachably fastening the
for clamping the ends of said tapes, means for
ends of said slat supporting tapes passing through
holding said clamping elements in clamped re
lationship with the ends of said Venetian blind 45 the holes in said ?xed bar, means operatively as
sociated With said shaft for normally rotating
tapes including means for releasing said clamp
said shaft in a direction to cause said tapes auto
ing elements for removal of said tapes, and means
matically to move the slats supported by said
for rotating said shaft to ‘cause said tapes to
tapes toward a closed position, manually oper
move vertically with respect to each other.
3. A Venetian blind comprising a rotatable 50 ated means associated with said shaft for rotat
ing said shaft to cause said tapes to move said
shaft, fastening means ?xed to said shaft for
slats to a predetermined open position, and means
detachably fastening the ends of slat supporting
releasably associated with said last named means
tapes, means operatively associated with said
for holding the latter in a ?xed position to cause
shaft for normally rotating it in a direction
to cause said tapes automatically to move the 55 said slats to remain in a predetermined open po
sition irrespective of the force tending to urge
slats supported by said tapes toward a closed
them toward a closed position.
position, means operatively associated with said
8. A Venetian blind as claimed in claim 7 com
shaft for rotating it to cause said tapes to move
prising means supported from said shaft for
said slats to a predetermined open position, and
means releasably associated with said last named 60 guiding a Venetian blind cord through said holes
in said bar. .
means for holding the latter in a ?xed position
9. A Venetian blind comprising a ?xed upper
to cause said slats to remain in a predetermined
supporting bar for the blind provided with holes
open position irrespective of the force tending
for the passage of the upper ends of slat support
to urge them toward a closed position.
4. A Venetian blind comprising a rotatable 65 ing tapes therethrough, ?anged portions extend
ing outwardly from the sides of said bar adja
shaft, fastening means ?xed to said shaft for de—
cent the bottom thereof, an operating mechanism
tachably fastening the ends of slat supporting
for the Venetian blind mounted on the top of said
tapes, spring means ‘operatively associated with
bar and a housing seated on the said ?anged
said shaft for normally rotating it in a direction
to cause said tapes automatically to move the 70 portions enclosing the top and sides of said oper
ating mechanism whereby when said blind is
slats supported by said tapes toward a closed
placed in wall brackets the operating mechanism
‘ position, means operatively associated with said
is entirely enclosed.
shaft for rotating it to cause said tapes to move
said. slats to a predetermined open position, and
MAX W. ALBRECHT.
Документ
Категория
Без категории
Просмотров
0
Размер файла
641 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа