US2381060A

US2381060A - Venetian blind structure

Info

Publication number: US2381060A
Application number: US535065A
Authority: US
Inventors: Lewis I Kahn
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-05-11
Filing date: 1944-05-11
Publication date: 1945-08-07
Anticipated expiration: 1962-08-07

Description

Aug. 7, 1945. L. L KAHN VENETIAN BLIND STRUCTURE Filed May 11, 1944 2 Sheets-Sheet l INVENTOR.

I ewi s LKahn Aug. 7, 1945. L. l. KAHN VENE'I IAN BLIND STRUCTURE 2 Sheets Sheet 2 Filed May 11, 1944 INVENTOR. ev/dis I-Kakn WiiTZZSse 5 Patented vAug. 7, 1945 umrso STATES PATENT OFFICE W m num-nan Lewis 1. man. Jamaica, N. r. s ims 01:13:11, (1:211: 30. 535,065

This invention relates to Venetian blinds and. more particularly plurality of slats suspended by tapes, having means to raise and lower the slats and to tilt them at different angles to admit varying degrees of light.

In the ordinary type of blinds a plurality of cords extend down through the slats to the bottom rail so that the blinds may be raised and lowered. It is customary to have these cords extend through openings in the slats. with this construction it is impossible to removethe slats from the cords without totally dismantling the blind and this requires a factory iob. Moreover. these cords are inclined to wear and my where the 'are engaged by the pulley and locking means and to break or stick.

to blinds which consist of a An object of this invention is to provide a blind I in which the cords as such are eliminated and in which the individual slats are supported on the ladder or stirrup by detachable means. In the old construction it was impossible to remove the slats for cleaning purposes without dismantlin the entire blind and one of the purposes of the present invention is to provide a structure where the slats may be individually removed and replaced without dimculty.

A further object is to provide a structure in which the slats which are readily removable are securely held in place and are centered on the ladders and stirrups so that they turn evenly whxdthe slats are tlltedand they do not stick or e.

Other objects and advantages of the invention will become apparent from the description and the accompanying drawings, in which- Figure 1 is an elevation partly in section of a blind embodying my invention;

Flg. 2- is a detailed view in section; 4

Fig. 3 is a sectional view taken on the line a--! showing tilting mechanism;

Fig. 4 is a sectional view H;

Fig: 5 is a detailed view showing the manner of positioning the individual slats P18- 6 is a sectional view taken on the line taken on the line supporting member adapted to be used in structure shown in Figure 9;

Fig: 11 is a modification of the form shown in Fig. 9;

Fig. 12 is a supporting member.

Referring more particularly to the drawings. 1 provide a box member is in which is mounted a blind supporting mechanism which includes a rod member is and roller l1. Rod member it may be in any desired shape and preferably extends from adjacent one end of the blind to adjacent the other end. The rod member is is supported at one end by the bracket is and is pivotally mounted therein at is. At the other end of the rod l8 pin 20 engages the sleeve it which has an arm 22 fastened to the top of the rod is by means of the screw 2:. The sleeve II is mounted in the bracket 24 and has a spring 25 positioned between the flange 26 and the bracket 24. An arm 21 is aihxed to theend of the sleeve 2|. The arm 21 has two ends and 29 to which are fastened the tapes or cords 30 and 3i. A plurality of

double tape members

35 and 38 are mounted on the rod is and depend therefrom to the bottom rail 31 where they'are fastened in the conventional manner to eitherside thereof.

Mounted on the sleeve 2| and constituting an extension of the arm 22 is a pinion as engaging gear 39 mounted on the shaft 40. The shaft 40 the also supports a spring 4| which is positioned by 7 g the flange 42 and bracket 24 to tension the tuming thereof. It will be seen that by operating the tapes in and 3! the angle of the rod It will bechanged and that this change will be transmitted by the tapes :5 and to the bottom rail :1 and to each of the slats therein as will be more fully described hereafter.

As shown in Figures 1 to 8 inclusive, the conventional ladder member III is sewn or woven into the

tape

35 and 36 to connect the two tapes. This may be secured in any desired way but in present practice these ladder members are woven into the tapes and alternate from side to side,

further modification of the slat= particularly as'shown in Figure 6 and indicated Fig. "I is a cross sectional view takenon the line IF-1 of Fig. 5;

Fig. 8 is a detailed view of supporting means;

Fig. 9 is a view of a tapeembodying a modiflcation of my invention;

one form of the slat by the numerals 5i and 52. In ordinary commercial use the slats 55 are supported by the ladder members and are free to slide thereon,

being, positioned by means of a cord extending between the alternate ladder members and extending through the center of the slats. Be-

cause of this cord it is impossible to remove the 113,10 is a perspective view showing a slat 5s slats without dismantling the blind. In my improved construction I provide a slat supporting member 56 shown in detail in Figure 8.

Member 55 may be made out of metal, plastic, or any similar material but is preferably semirigid. It is provided at either end with a pair of

lugs

51 and 58 which are adapted to be bent about the ladder member 55 to firmly grip it and to position the tape 35 and 35 a uniform distance apart. Mounted on the member 55 is a stud 59 similar to that found in the conventional snap fastener. Slats 55 are provided with an opening 50 which may or may not be fitted with the female part of a snap fastener. In any event, the opening 50 is of such a size as to enable the stud 59 to be snapped therethrough and to hold the slat from lateral movement. The stud 59 may be mounted in a slot ii to slide therein in order to allow for irregularities in the hole 50. It will be seen that by operating the cords 35 and II the angle of the ladder member or stirrup 50 and also of the slat carrying member 55 and the slat 55 may be changed. Since the slats are more or less riging or sticking. Since the pinion 35 engages the gear 39, the action of the springs and H is l sufficient to create adequate friction to maintain the bar 15 at whatever position it is left.

The roller I1 is pivotally mounted at either end in the brackets II and 25 and adjacent one end thereoi is mounted the tape 55 rolled thereon at 61. For each set of double tapes there is mounted on the roller I! a continuous tape extending along the double tapes at 10 and II and rolled about the roller H at 12 and 13. 'The tape extends along the side of the tape as indicated at 15 under the bottom rail and along the tape 35 as indicated at H. The tape 10 and II is free to slide under the bottom rail so that when the slats are tilted the length of the blind will not be altered. Mounted on the bottom I5 of the box member 15 is a catch member 15 adapted to engage the tape against the side 11 of the aperture through which the tape passes. It. will be seen that as the tape 55 is pulled the bottom rail 31 and successive slats 55 will be raised toward the box. If the tape member i moved to the left the catch 15 will position it against the side 11 of the aperture and hold it in position. The

tape member 55 is wound in the opposite direction from the tape 1| and ill so that as the tape 55 is unwound tape H and 10 will be wound upon the' roller II. The bracket I5 is provided with a slot 80 so that the rod I5 may be removed therefrom and the bracket 24 is provided with a similar slot.

In the form shown in Figure 9, tape 80 is provided with a pair of tape members SI and 52 attached thereto by means of stitching, an adhesive, or in any other conventional manner. These .tapes are provided at predetermined intervals .to' engage the end 95 of the member 99. The

member may be formed of wire bent upon itself 'to iprovide the stud "land the ends 98 which would-be inserted through and supported by the members 51.

It will thus be seen that I have provided an attractive practical blind in which the slats may be readily removed for cleaning purposes and replaced without upsetting the hanging of the blind or without returning it to the factory for re-assembly. It will also be appreciated that many changes may be made in my structure without materially ail'ecting the invention thereof thereby and that a number of variations thereof may be made, for instance, the ladders may all be centered and the tapes placed adjacent thereto, if desired.

I claim:

1. In a Venetian blind having a plurality of slats having openings therein and tapes supporting said slats said tapes 'being joined by cross members, of means for positioning said slats, said means comprising a member adapted to be fastened to one of said cross members and having a stud therein releasably engaging one of said openings in one of said slats.

' 2. .A device for positioning apertured slats on the cross tapes of conventional Venetian blind ladders comprising an elongated member, lugs at each end of said member adapted to engage the associated cross tape and a stud on saidmember adapted to engage an aperture in the associe ated slat.

3. In combination with a Venetian blind having apertured slats and a pair of tapes provided with engaging means supporting said slats of means for supporting one of said slats comprising a member, a stud on said member engaging an aperture in said slat and lugs on the ends of said member adapted to engage the engaging means on said second rod in an opposite direction to said pair of tapes for winding said pair of tapes on said second I'Od.

5. In a Venetian blind structure having supporting tapes. slats, a rotatable rod and a bottom rail, means for raising and lowering said blind, said means comprising a pair of tapes fastened to opposite sides of the bottom rail of said blind and extending on opposite sides of said slats inside of said supporting tapes to said rod, said tapes being wound in the same direction on said rod, an additional tape member wound in the opposite direction on said rod, and meansfor holding said additional tape member in selected positions.

6. In a Venetian blind structure having supporting tapes and apertured slats, a slat supporting member comprising an elongated body, a stud on said body adapted to-engage an aperture in said slats, and means for fastening said member to said supporting tapes.

7. A Venetian blind structure having supporting tapes, a pair of tapes fastened-to the inner sides of said supporting tapes, eye members on each of said pair of tapes, and a slat supporting body having means to engage said eye members.

porting tapes, means for tilting said rod mem-. her, the other of said rod members having wound thereon a plurality of pairs of tape members, said last-mentioned tape members extending along and inside of said supporting tapes to saidv bottom rail on each side of.. said slats, and means for rotating said rod member to wind said pair of tapes to raise said blind.

9. In a Venetian blind structure a slat supporting member comprising a wire bent upon itself to form a stud at approximately the center thereof adapted to engage an aperture in said slat, said wire being bent at each end thereof to engage the supporting tapes of 'said blind structure.

LEWIS I. KAI-IN.