US2276898A

US2276898A - Venetian blind

Info

Publication number: US2276898A
Application number: US391103A
Authority: US
Inventors: Walker Brooks
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-04-30
Filing date: 1941-04-30
Publication date: 1942-03-17
Anticipated expiration: 1959-03-17

Description

` March 17, 1942. B, WALKER 2,276,898

` VENETIAN BLIND Filed April 50, 1941 INVENTOR.

Patented Mar., i7, 1942 UNITED sTA'ri-:s

2,216,898 VENETIANBLIND t 1 Brooks Walker, Piedmont. t

Application April iz claim; This invention pertains to improvementsQin Venetian blind construction and thelike, 'partie-A ularly to modiiications in the construction of. the

tiltingand raising mechanism and the method .l of attaching the blinds to the fascia.

able weight between or hey/ond supportsi 1 Linate me away with the tilt rail by anchoring the mom side of the ladder tage rigidly relativfo the fascia, preferably taclsing or staplingjfthe same to the fascia. l have designed a special bracket for supporting the fascia 'relative toftii'e l,

ceiling, walls, or window frame, which brackets also incorporate the pulleys over which thejiiiting cords pass. rThe same pivot or axle lfor the n lifting cord pulleys also acts for pulleys `y "over whichcords or exible elements pass to Kcontrol the tilting mechanism by raising or loweringfthe window side of the ladder tapes or exible' slet spacing device. In modern blind construction, fascias are practically essential, but from'an apparent standpoint it is desirable that thelfasclas l Y n .i 30 lto corresponding parts inthe-drawing be only approximately twice the slatA widthior less, if possible, under certain conditions. At the same time, it is essential that in all positionsof the slats, whether tilted up or down, no klight streak show between the top slat and the fascia when in the closed position, and also that the pulley mechanism, as well as the attachment between the tilt and the back tape of the ladder tape, be hidden from view from the insideioffthe room in order to present 'as neat an appearance as possible. All this is accomplished in this ap-y plioation. Although l have shown, in most cases, the fascias supported by bracketsalone without a dust cap, in case such a dust cap is used, it maybe attached to the fascia and may he suppor'd by" separate brackets with angle brackets tying kthe fascia to the dust cap, also carrying the pulleys for the lift and tilt cords. The cord locks for controlling both lifting and tilting are supported on the fascia or on the dust cap Without the necessity of routine either, which o course reduce the cost of manufacture and assembly.l

This construction also does away with thenccessity of routing the tilt rail for the passagefoliv lifting cords, and for routing the head Y'rail for' icl. .15e-17);-

orivk tion t'oig'u're 1il 1"? I is Aafpartiali end section di t ppe'r portion o: 21, snowie'the'fsietsime cwi, demarcation; s i

igurejfis'a-'viewsiniilar'to-lg'buts vWin the Gilets in a raisemfeiosedffposition'. l Figure -5 is.v a. view trenitalia-na in which theitsciafan'fdfsumioz'tiiig'` lira y n, mounted` on dceilingk ffforr'eces 'f Referringtotheforawinfidetail, icuiariy Figures to 4, inclusive; If'havfshwn Window i. a, window or wan '2 eny which isi-'sixotivo "pulleys I 6 land f 11, held apart -by-fsparatprs til, 3i, and 32, if such separators are deemed necessary, as it' may tbe-equally' satisfactory' t' ilse ywider rn'illeysl` I8 andy i1 which butt ag'ainsteach {other' and keep the cords it 255 from 'tting entangled by meanskof the jpulleyjganges iid their pronimitytobracket 6 whichdesf'no fllow the "cords,- toig'etfjoutof the pulleys.

ternate construction would be lto allo 'th '[leys.v 'i8 and iito oat'on axle'l to End-their i neutral position. f Y "The blind' ,itself @mais ,of 'ladder a cross ruines Mifwhithfsurnortsfslat? {1 isrreierebiy a. bttm and similarpulley I6 at bracket] would be located above the opposite edge of the slats. `Cords 26 are suitably attached to bottom rail 6 by passlifting cords, or other suitable manner.

The room-side of the ladder tape 6 is suitably attached to the fascia by nails, staples, or other devices, as shown in 66., The window I is at wliagwe prefer to call the back or window side of theblind, and the ladder tape at that side is secured to the tilting

cords

25 and 26, respec-` tively, in some suitable manner, such as byfolding the ends of the ladder tape tentwise across the tilt cord 25 and then sewing, stapling, or clipping the ladder tape to the cord in some suitable manner. An alternate construction is to insert an eyelet 66 in the ladder tape, as sh'own under bracket 1 and then pass tilting cord26 through said eyelet and tying a knot in the end of the cord to form an attachment between the end of the cord and the ladder tape. Any other suitable manner of attaching cords or other flexible elements to the ladder tape may also be applied. By this construction, when it is desired to tilt the blind, the operator pulls on

cords

25 and 26 which may be tied together by cord bracket I3. 'I'hese tilting ycords pass over pulley I2 and adjacent cord stop 63A which may be of any conventional or improved construction.v Cords 20 and 2I,being connected to the bottom rail l, lif-t in a conventional `manner and it ls'locked in any desirable position by moving the cords 25- and 26 outwardly to cause dog l5 to vengage the cords as soon as the blind starts to lower. To prevent cords and 2l from piling up on the iioor as the blind is lifted, I have shown a construction wherein-they can continue to become cords and 26 which control the tilting mechanism.

This continuous lift and tilt arrangement only yallows th'e cord to reach the floor in twice the raising distance which would be the case if the continuous cord were not used. When it is desired to tilt the blind, the operator does so by raising or lowering

cords

25 and 26 and locking them in a desired position by moving them outwardly to cause dog 43A to lock thecords at the pulley I6 to retain the slats in any desiredtilted position. When theslats are in the raised position shown in Figure 4, there may be an oncenter action which' is overcome by the addition of a spring 66 attached between the fascia and tilt cord 26, to urge the cord into a slat lowered position and .to overcome the friction of the pulley 66 and dog 65 when in the non-locking position.

If it is desired to only have one lifting and tilting cord, it is very easily accomplished, as the total motion of the tilting cord is only a little over vtwice the vslat width, and a junction between cord 25 'and 26 can be made adjacent pulley I1 when in the slat lowered position and there will be suilicient room provided between pulley I1 and lock pulley 46 to allow full two-way tilt of the slats. Pulleys 42 and 66 and their associated cord locks can be placed at opposite ends of the blind on the fascia, if it is desired from an operating standpoint, though in this case it would probably not be very practical to have th'e lifting cords continuous. When it is desired to remove the slats forrepairs, cleaning, and inspection etc., it is only necessary to remove the i'asciaI III with its attached supporting brackets 6 and 1 6 from falling too far down through bracket 5. Where the blind is to be installed in a recess near thewindow, a construction similar to Figures may be incorporated. wh'erein a bracket 50 is at- 5 tached to the window frame 2 by means of a suiting through a hole and tying a knot 20A in the l0 notches IIA pass by projections 50A of the wall bracket. When the bracket is lowered in the position shown` in Figure 8, it is retained against displacement by its own weight.

If a dust cap is used between the fascia and the Y1sY wan, it woum be mated as indicated at come lines at 55 in Figure 4, in which oase bracket y6 could be attached to dust cap 55- and fascia I0, and could form thel supporting bracket, or a separate support angle bracket could support the 2o blind to dust cap 55, fascia I6, bracket 6 and 1 etc.

Under certain circumstances, it may be found desirable to attach the top slat to the sides of the ladder tape so as to make said top slat act as a hinge. This is done by having two small holes at the 2:,A edge of the top slat rthrough which cords or metal clips 6II'and 6I pass to flexibly connect the edges of the top slat to the sides of the ladder tape. This is particularly important if the pulleys that control the tilting of the slats by raising and 30 lowering the rear ladder tape are close to the anchored side of'the ladder tape, causing a side pressure onl the edge of the top slat as it is forced to a' lowered from a raised position, particularly'in the lhorizontal position. Such side pressure in certain instances forces the top slat out of parallel with the other slats, which are resting on the ladder tape rungs, and sometimes causes the blind to bind during the tilting operatien'. Attachments such as 60' and 6I -have been el. 40 found valuable in eliminating this bind. On

short blinds itis only necessary to make such attachments at one tape; on long blinds vit might be advisable to make such attachments at more than one tape.

While I have described and illustrated several embodiments of myinvention, it will be apparent to those skilled in the art that various changes, omissions, additions, and substitutions may be made in the construction of the apparatus and that the apparatus may be put to. uses otherthan those described without departing from the spirit of the invention as defined in the appended claims.

I claim as my invention:

. 1. A Venetian blind supporting means, including a main support, a plurality of blind slats suspended by exible elements from said main support, .said ilexible elements including front and rear portions relative to said slats, a fascia 00 element at the top of said blind, one side of said flexible element rigidly secured to said fascia, a

l support for said fascia, flexible lifting elements for collapsing and tilting said slats, pulleys for said exible elements, said pulleys supported at least partially by said fascia support.

2. A Venetian blind, including spaced slats. a ladder tape, flexible lifting elements, a fascia element at the top of said blind, said ladder tape having `two side tapes and cross tapes adjacentV T0 each slat, one side of said tapes being firmly attached adjacent said fascia, the other side of 1 said ladder tape being manually adjustable to tilt said slats to a closed position with the slats y tilted up or down.

out of wall bracket 5. A stop 6A prevents bracket 75 3. A Venetian blind, including spaced slats, a

aeraaea ladder tape, flexible lifting elements, a fascia element at the top of said blind, said ladder tape having two side tapes and cross tapes adjacent each slat, one side of said tapes being firmly attached adjacent said fascia, the other side of said ladder tape being manually adjustable to tilt said slats to a closed position with the slats tilted up or down, the top slat being supported just above the bottom of said fascia when in .the horizontal position.

4. A Venetian blind, including spaced slats, a ladder tape, flexible lifting elements, a fascia element at the top of said blind, said ladder tape having two side tapes and cross tapes adjacent each slat, one side of said tapes being firmly attached adjacent said fascia, the other side of said ladder tape being manually adjustable to tilt said slats to a closed position with the' slats tilted up or down, a lock device, said ilexible lifting elements travelling through said lock device which is supported on said fascia.

5. A Venetian blind, including spaced slats, a ladder tape, flexible lifting elements, a fascia element at the top of said blind, said ladder tape.

ladder tape, flexible lifting elements, a fascia element at the top of said blind, said ladder tape havingtwo side tapes and cross tapes adjacent each slat, one side of said tapes being :drmly attached adjacent said fascia, the other side of said ladder tape being manually adjustable to tilt said slats to a closed position with the slats tilted up or down, a cord lock device, a cord for tilting said slats, said flexible lifting elements and said tilting cords both passing through cord lock devices, said cord lock devices being supported on said fascia.

'7, A Venetian blind, including spaced slats, a ladder tape, flexible lifting elements, a fascia element at the top of said blind, said .ladder tape having two side tapes and cross tapes adjacent each slat, one side of said tapes being firmly attached adjacent said fascia, the other side of said ladder tape being manually adjustable to tilt said slats to a closed position with the slats tilted up or down, a cord lock device, a cord for tilting said slats, said flexible lifting elements and said tilting cords both passing through cord vlock devices.

fascia, pulleys for said flexible lifting elements, said pulleys being supported in said brackets.

8. A Venetian blind,`including spaced slats, a

rladder tape, flexible lifting elements, a fascia 1 a plurality of metal brackets for supporting said i element at the top of said blind, said ladder tape having two side tapes and cross tapes adjacent each slat, one side oi' said tapes being rmly attached adjacent said fascia, the other side of said ladder tape being manually adjustable to tilt saidslats to a closed position with the slats tilted up or down, a cord lock device, a cord for tilting said slats, Said flexible lifting elements and said tilting cords both passing through cord lock devices, a 'plurality of metal brackets for supporting said fascia, pulleys for said tilting cords to pass over, vsaid pulleys being mounted in said brackets.

9. A Venetian/blind, including spaced slats, a ladder tape, flexible lifting elements, a fascia element at the top of said blind, said ladder tape having two side tapes and cross tapes adjacenteach slat, one side of said tapes being ilrmly attached adjacent said fascia, the other side of said ladder tape being manually adjustable to tilt said slats to a closed position with the slats tilted up or down, a cord lock device, a cord for tilting said slats, said flexible lifting elements and said tilting cords both passing through cord lock devices, a plurality of metal brackets for supporting said fascia, pulleys'for said exible tilting and lifting elements to pass over said pulleys, said pulleys being supported in said brackets.

tilting said slats in both directions, said pulleysbeing mounted on the supports for said fascia, said supports being substantially U shaped and forming the only support for said fascia.

12. A Venetian blind,` including pulleys, exible elements for lifting said blind, a fascia, a support for said fascia, a plurality of slats, a nexible slat supporting element, manual means for lifting and tilting said slats in both directions, said pulleys being mounted on'tne supports for said fascia, said supports being separate short brackets adjacent two or more flexible slat supporting elements and being the sole support for said fascia..

' BROOKS WALKER.

Patent No. 2,276,898 Granted March 17, 1942 BROOKS WALKER The above entitied patent was extended Jul)1 24. 1951, under the provisions of the actY of June 30, 1950, for 6 years and 214 days from the expiration of the original term thereof.

Uommissioner of Patents.