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Dec. 13, 1949
J. L. HUNTER
2,491,131
TAPE FASTENBR FOR VENETIAN BLtuns
Filed Feb. 13, 1945 -
IN VEN TOR.
HTTOZA/EV
Patented Dec. 13, 1949
2,491,181 I
'_ UNITED ‘STATES PATENT OFFICE
2,491,181
TAPE FASTENER FOR VENETIAN BLINDS
Joseph L. Hunter, Riverside, CaliL, assignor, by
mesne assignments, to Hunter Douglas Corpo
ration, Riverside, Calit, a corporation of Dela
ware
Application February 13, 1945, Serial No. 577,692
1
'1 Claims. (01.160-1'78)
My invention relates to a tape fastener par
ticularly adapted for fastening the bottom ends‘
of tape ladders of Venetian blinds to the botto
rail of such blinds.
'
In the assembly of Venetian blinds it is the
common practice to employ a plurality of tape
ladders disposed at intervals along the length
of the'blinds, such ladders including a pair of
vertically extending tapes interconnected by cross
2
the tape fastener may be suspended loosely be
neath the bottom rail by the temporary securing
thereof of the ladder tapes and wherein the tape
fastener is provided with a cover plate which
when secured to the bottom rail not only covers
and encloses the tape fastener but also acts to
permanently hold the tapes in whatever adjusted
position they have been placed prior to the plac
ing of the cap thereon.
bars upon which the individual slats of the Vene 10
Other objects and advantages of my invention
tian blind rest. The tilting of the slats to their
will be apparent from a study of the following
various adjusted positions is accomplished by
speci?cations, read in connection with the ac
lifting of one of the tapes and lowering of the
companying drawings, wherein
opposite tape and vice versa. The lower ends of
Fig. 1 is a fragmentary perspective view of the >
the vertical tapes of the tape ladders are usually 15 assembly of a pair of ladder tapes, a bottom rail
secured to a bottom rail element as by drawing
and my novel tape fastener;
'
the ends of these tapes about the bottom rail
Fig. 2 is a perspective view of the tape fastener
and securing the ends thereto by means of tacks,
illustrating the manner in which the tapes may
screws or other securing devices, usually the fas
be temporarily and adjustably secured thereto; .
tenings employed being covered by a cover plate 20 and
or strip extending along the bottom rail and
Fig. 3 is a transverse sectional view taken
secured thereto.
through the assembled bottom rail, tapes, tape
In recent years Venetian blinds have been con
fastener and cover plate shown in Fig. 1.
structed of metal slats as distinguished from the
Referring to the drawings, I have illustrated
previously used slats formed of wood and with 25 a bottom rail and tape assembly forVenetian
such metal slat blinds it is desirable to use a
blinds as comprising a bottom rail member I
metal bottom railing, making it diflicult to readily
which, ‘in the form illustrated herein, may be
secure the ends of the ladder tapes to the bottom
comprised of a hollow section of metal tubing
rail.
1
having any desired shape though it will be under
One of the difficulties which have been hereto- - stood by those skilled in this art that a bottom.
fore encountered in the assembly of blinds and
rail formed of wood may be substituted therefor
securing of the tapes has been that during the
without departing from the spirit of myinveii-v
assembly operation there is no ready means for
tion.
temporarily attaching the tapes to the bottom
A pair of ladder tapes 2 and 3, comprising a
rails which would permit of an adjustment be-' 35 portion of one of the ladders employed in the
tween these tapes and the bottom rail to level
Venetian blind assembly, are illustrated as ex
up the suspension .of the bottom rail.
tending downwardly about the side edges of the
It is therefore an object of my invention to
bottom rail I and secured in place by means of
provide a tape fastener which may be readily
a tape fastener 4 constructed in accordance with
employed with the bottom rail of Venetian blinds 40, my invention and covered by acover plate 5
of either metal or wood construction, in which
which may be attached to the bottom rail I as
the tape fastener comprises both a temporary
by means of screws 8 and which will act not only
adjustable fastener for the lower ends of the
to cover and enclose the tapes and the tape fas
tapes and also acts as a permanent fastener.
tener proper but will also act upon the tape fas
Another object of my invention is to provide
a fastener of the character set forth in the pre
ceding paragraph wherein the tapes are detach
' tener to immovably secure the tapes in any deé
sired adjusted position.
By referring to Fig. 2, it willlbe observed that
ably secured to the fastener to, permit the ready
the tape fastener proper 4 comprises a piece of
disassembly of the tapes from the bottom rail
relatively thin metal having a length just slightly
‘I when it is desired to disassemble the blind.
50 less than the transverse width of the bottom rail
Another object of my invention is to provide
I, the side edges of the metal plate being bent
a tape fastener of the character described which
back upon the metal of the plate to provide a
is simple and inexpensive in construction.
pair of channels ‘I and 8 which will act asguides
Another object of my invention is to provide
through which the ends of the'tapes 2 and 3 may
a tape fastener of the character set forth wherein 55 be passed. The base of the fastener plate is illus
- 9,491,181
4
3
yet be free to be readily disassembled merely by
tratedashavingapairoftonguesland "struck
downwardly therefrom along a substantially u
shaped line, the base of the U of each of the
tongues being disposed on opposite sides of the
transverse center line of the plate, that is, on
opposite sides of the longitudinal center vline of
removing the screws 0 and the cover plate I,
whereupon the tongues ! and II are free to be
the bottom rail I.
sire to be limited to any of the details of con
?exed outwardly to release the tapes 2 and I.
While I have shown and described the pre
ferred embodiment of my invention, I do not de
Thesetongues have a width
struction shown and described herein, except as
Just slightly less than the width of the fastener
de?ned in the appended claims.
4 and the transverse edge ll of the tongues is
I claim:
preferably cut from the base along a serrated -.
1. In a tape fastener for securing ladder tapes
line at the base of the U to provide a plurality
of inter-fitting teeth I! and II on the base and , to bottom rails of Venetian blinds, a plate adap
tongue. This arrangement permits the tape to be
drawn under the lower rail I, passed downwardly
through the opening formed between the inter
fitting serrated teeth I2 and I3, and then the
end of the tape is drawn outwardly to lie imme
diately below the tongue s or Ill, respectively.
In assembling the blind structure the tapes are
preferably temporarily held in the above de
scribed position by merely tucking the side edges
of the tape above a pair of ?ngers I 4 and II
formed upon and extending below the base por
tion of the fastener plate 4, any» downward pull
which is exerted upon the fastener 4 automati
cally diminishing the space between the serrated
teeth I! and I3 to grip and engage the tape
therebetween but permitting the ready manipuw
lation of the tape relative to the fastener 4 to
lengthen or shorten the tapes 2 and 3 relative
ted to be disposed transversely across the lower
surface of the bottom rail, said plate being
15 formed of relatively thin metal having a pair of
tongues each struck downwardly therefrom
. along a substantially U-shaped line. the bases of
the U-shapes extending parallel to each other
and being disposed on opposite sides of the
20 center line of the bottom rail to define openings
through which the ends of opposite tapes of a
ladder may be drawn from above the plate and
folded back beneath the tongues, whereby down
ward forces exterted upon said fastener plate
25 will cause the tongues to pinch the tape be
tween the tongues and the adjacent portions of
the plate.
30
to the bottom rail I as the assembly is leveled
up.
All of the foregoing assembly may be, and pref
erably is, accomplished while the fastener plate
4 is disassembled from the bottom rail I so that 35
the assembly may occur with the bottom rail in
place but merely lying upon the fastener 4 until
the adjustment of the lengths of the tapes 2
and 3 has been completed.
,
The assembled tapes and tape fastener may 40
now be secured to the bottom rail l as by em
ploying a substantially box-shaped cover plate
I adapted to enclose the fastener plate 4 as by
projecting screws 4 through suitable aligned
holes or apertures it formed through the mid
section of the fastener plate 4, the upstanding
?anges H at opposite sides of the bottom rail
acting to grip or clamp the tapes 2 and 3 to the
bottom rail while at the same time the depth
of the ?anges I1 is preferably such that com 50
paratively little space is allowed for the down
ward ?exing of either of the tongues s and I0
and hence insuring against the inadvertent slip
' ping of the tapes from their adjusted positions on
their respective tongues.
}
.
2. In a tape fastener for securing ladder tapes
to bottom rails of Venetian blinds, a plate
adapted to be disposed transversely across the
lower surface of the bottom rail, said plate be
ing formed of relatively thin metal having a pair
of tongues each struck downwardly therefrom
along a substantially U-shaped line, the bases
of the U-shapes extending parallel to each other
and being disposed on opposite sides of the center
line of the bottom rail to define openings through
which the ends of opposite tapes of a ladder may
be drawn from above the plate and folded back
beneath the tongues, the lines of the bases of said
U-shapes being serrated to provide inter-fitting
teeth on the ends of the tongues and the adja
cent portions of the plate, whereby downward
forces exerted upon said fastener plate will cause
the teeth of the tongues to grip the tape be
tween the ends of the tongues and the adjacent
portions of the plate.
3. In a tape fastener for securing- ladder tapes
to bottom rails of Venetian blinds, a plate
adapted to be disposed transversely across the
lower surface of the bottom ra?, said plate be
ing formed of relatively thin metal having a pair
of tongues each struck downwardly therefrom
along a substantially U-shaped line, the bases
of the U-shapes extending parallel to each other
and being disposed on opposite sides of the center
line of the bottom rail to define openings through
which the ends of opposite tapes of a ladder may
screws secured directly into the wood of the bot
tom rail while if a metal bottom rail is employed
be drawn from above the plate and folded back
as illustrated herein, the screws 6 may be mach 60 beneath the tongues, whereby downward forces
exerted upon said fastener plate will cause the
ine screws threaded directly into the metal of
tongues. to pinch‘ the tape between the tongues
the bottom railstructure.
and the adjacent portions of the plate, the side
It will be apparent therefore that I have pro
edges of the plate being bent back to de?ne tape
vided a fastener for Venetian blind ladder tapes
which permits the ready temporary assembly of 65 receiving channels to temporarily hold that por
tion of the tapes disposed beneath the tongues
the tapes and fastener without the necessity of
in position beneath the tongues.
employing tacks or other securing devices, and
4. In a tape fastener assembly for securing
in which the tapes arevat all times free to be
lengthened or shortened during the assembly
ladder tapes to bottom rails of Venetian blinds, a
operation to achieve the desired leveling of the 70 bottom rail, a tape fastener plate disposed be
neath said bottom rail, said plate being formed of
bottom rail and to achieve the desired spacing
relatively thin metal having a pair of tongues
between the lowermost slat and the bottom rail,
each struck downwardly therefrom along a sub—
while once the adjustment has been completed
stantially U-shaped line, the bases of the
the tapes will be held permanently in this ad
In the event it is desired to use a bottom rail
constructed of wood, the screws i may be wood
justed position against possibility of slippage and 75 U-shapes extending parallel'to each other and
2,491,181
being disposed on opposite sides of the center
line of the bottom rail to define openings through
from above the plate and folded back beneath‘the
tongues, whereby downward forces exerted upon
which the ends of opposite tapes of a ladder may
be drawn from above the plate and folded back
> said fastener plate will cause the tongues to pinch
beneath the tongues, whereby downward forces
exerted upon said fastener plate will cause the
the tape between the tongues and the adjacent
portions of the plate, a cover plate disposed be
neath the tape fastening plate to cover and en
tongues to pinch the tape between the tongues
close the same, and means extending through said
and the adjacent portions of the plate, and means
for securing said plate to the lower surface of the
bottom rail.
5. In a tape fastener assembly for securing
ladder tapes to bottom rails of Venetian blinds,
a bottom rail, a tape fastener disposed beneath
said bottom rail, said plate being formed of rela
tively thin metal having a pair of tongues each
struck downwardly therefrom along a substan
tially U-shaped line, the bases of the U-shapes
extending parallel to each other and being dis
posed on opposite sides of the center line of the
bottom rail to de?ne openings through which the
ends of opposite tapes of a ladder may be drawn
from above the plate and folded back beneath the
tongues, whereby downward forces exerted upon
said fastener plate will cause the tongues to pinch
the tape between the tongues and the adjacent
portions of the plate, means for securing said
plate to the lower surface of the bottom rail, and
a cover plate secured to the bottom rail extending
T cover plate and said fastening plate for securing
said cover plate and said fastening plate to the
about and enclosing said plate.
,
10 lower surface of said bottom rail.
I
7. In a tape fastener for securing ladder tapes
to bottom rails of Venetian blinds, a plate adapted
to be disposed transversely across the lower sur
face of the bottom rail, said plate being formed of
15 relatively thin metal having a pair of tongues
each struck downwardly therefrom, one on each
side of the center line of the plate that is to be
disposed lengthwise of the bottom rail, the plate
material surrounding said tongues de?ning open
20 ings through which the ends of opposite tapes of
a ladder may be drawn from above the plate and
folded back beneath the tongues, said tongues
having a length sufficient to substantially close
said openings when the tongues are flush with the
25 plate, and said plate being of substantially ?ex
ible material whereby downward forces exerted
upon said plate will cause the tapes to draw the
tongues in a direction to close said openings and
clamp the tapes to the plate,
6. In a tape fastener assembly for securing 30'
JOSEPH L. HUNTER.
ladder tapes to bottom rails of Venetian blinds, a
-bottom rail, a tape fastener plate disposed be
REFERENCES CITED
neath said bottom rail, said plate being formed of
relatively thin metal having a pair of tongues
The following references are of record in the
?le of this patent:
'
each struck downwardly therefrom along a sub
stantially U-shaped line, the bases of the U-shapes
extending parallel to each other and being dis
Number
posed on opposite sides of the center line of the
2,079,852
bottom rail to de?ne openings through which the
ends of opposite tapes of a ladder may be drawn 40 2,258,647
UNITED STATES PATENTS
Name
Date
Grassby __________ __ May 11, 1937
Haase ____________ __ Oct. 14, 1941
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