US2416530A - Venetian blind - Google Patents

Description

Feb. 25, 1947. s. E.. |D 2,416,530

VENETIAN BLIND Filegl June 15, 1945 i m f 5Q Patented Feb. 25, 1947 ;'v

VENETIAN BLIND Sigirid Emanuel Lidin, Stockholm, Sweden, as-

signor to Alitiebolaget Atvidabergs Industrier, Atvidaberg, Sweden, a corporation of Sweden Appiic'ation June 15, 1945, Serial No. 599,619 In Sweden April 21, 1944 6 Claims.

The present invention relates to Venetian blinds of the type in which a plurality of horizontal laths are carried. upon tapes extending transversely between outer and inner zigzag-ribbons, and are lifted and lowered by means of cords carrying a horizontal bottom piece extending under the laths.

One object of the invention is to reduce the volume of the blind when in raised position, so that the raised blind does not reduce the area of the light.

Another object of the invention is to increase the resistance and the life or the durability of the zigzag-ribbons, more particularly of the outer ribb s Subj ct d to the action of the sun.

A further object of the invention is to produce a thin and narrow construction, yet one having an increased strength. i

Two embodiments of a Venetian blind according to the invention are by way of example illustrated in the annexed drawing.

Fig. 1 is a front view of the first embodiment of the blind, partly. loweredor let down.

2 is a front view of a part of the blind according to Fig. 1 but on an enlarged scale.

Fig. 3 is a vertical cross section on the line III- III in Fig. 2.

Fig. 4 shows a detail of Fig. 2 on an enlarged scale.

Fig. 5 is a front view of a part of a second embodiment of the blind.

Fig. 6 shows a vertical cross section on the line VI-VI in Fig. 5.

The Venetian blind of the present type is preferably intended to be mounted between the panes of a double window, that is, a window having double sashes, but it may be mounted inside the window and even outside the same.

In its general form the Venetian blind accordll'lg to the invention comprises pairs of zigzagribbons or strings, the strings of each pair lying on either side of the blind and each string consisting of a train of rigid sections, as well as joints interconnecting the sections of each zigzag-string, the axes of these joints being perpendicular to the plane of the blind or window.

In the drawing, in Figs. 1 through 3, the reference numeral I indicates the top piece from which the blind is suspended, and 2 is a bottom piece extending under the laths represented by 3. The bottom piece preferably has a U-shaped crosssection, so that it encloses and covers the laths 3 when lifted. Between the top piece I and the bottom piece 2 two pairs of zigzag-ribbons 4 extend vertically, the ribbons of each pair lying 2 on either side of the blind. According to the invention these ribbons consist of sections of rigid or stiff material, which sections are interconnected by means of hinges or joints. This can be attained in a simple way by the use of a usual flat textile ribbon or webbing which is folded at suitably spaced points 5, transverse seams 5 (Fig. 4) being stitched near the folds to form the joints, whereupon the ribbon is treated with a stiffening or impregnating matter, such as the usual starch, so that the ribbon is made rigid. The-flat crosssections pf the ribbons 4 are perpendicular to the plane of the blind.

The transverse tapes 1 which interconnect the ribbons l of each pair and upon which the laths 3 rest, are sewed or fastened to the ribbons 4 by means of seams, as illustrated especially in Figs. 2 and 3. Thus, the tapes I are laid flat upon the ribbons t in spaced relation and then they are stitched to the same. In the zigzag-line which is formed by the ribbons when the blind is lifted wholly or'partly, the tapes I preferably lie on the undersides of the sections of the ribbons 4. In Fig. 1 the positions of the tapes are marked by the lines I. r

The device described operates into the following manner:

For the lifting and the lowering or letting down of the blind a pair of cords ll, wires or similar means are arranged in suitable or known manner. When the bottom piece 2 is lifted against the top piece I, the ribbons 4 will fold into the zigzagform, the sections of the ribbons lying flat on each other, so that the folded ribbon will occupy a minimum of room or space. The bending of the ribbons 4 occurs only at the joints formed by tion the packet of laths will occupy a most restricted space or room, the volume of the'packet of laths in lifted position being reduced te /3 or compared with prior constructions. The volume of the blind in lifted position is reduced further by the U-shape of the bottom piece which thereby obtains the necessary strength without increasing the vertical extension of the packet of laths and bottom piece. The vertical flanges or branches of the U-profile, enclose the packet of lifted laths, so that this packet and the ribbons are covered and hidden or concealed from persons in the room. Because the ribbons 4 are arranged perpendicularly to the plane of the window, the important advantage is obtained that only a very narrow area of the ribbon is faced or turned to the sun, so that the ribbons are not is increased essentially, especially on the outer side of the window.

In the embodiment shown in Figs. 5 and 6, the zigzag-ribbons 54 are composed of sections of metal strips, for instance, strips of stainless steel, which sections ,are interconnected by means of joints or hinges I 8, the axes of which are perpen dicular to the plane of the window. In this em- 1 bodiment the transverse tapes I! preferably consist of wires, for instance made of stainless steel.

Also the laths 3 and the lifting members H may i be made of a metal. Thus. the elements l l may consist of stainless steel wires or piano wires. Bysuch'construction the blind obtains an increased resistance to the influenceof the weatlier or the atmospheric conditions and therefore can be disposed even on the outer side of the window.

' The manner of operation is substantially the 1 same as described in connection with the first embodiment shown in Figs; 1 through 4.

What I claim is:

1. A Venetian blind, comprising, in combination, a plurality of horizontal laths, a horizontal 1 bottom piece extending under the laths, a number of lifting and lowering cords carrying the 1 bottom piece, pairs of zigzag-strings, the strings of these joints being perpendicular to the plane of the blind, and transverse tapes interconnect ing the zigzag-strings of each pair, the laths resting upon the tapes.

2. A Venetian blind, comprising, in combination, a plurality of. horizontal laths, a horizontal bottom piece extending under the laths, a number of lifting and lowering cords carrying the bottom piece, pairs of zigzag-ribbons, the ribbons of each pair lying on the respective sides of the blind and each ribbon consisting of a train of rigid sections which have fiat cross-sections perpendicular to the plane of the blind, joints interconnecting the successive sections of each zigzag-ribbon and the axes of these joints being perpendicular to the'plane of the blind, and

transverse tapes interconnecting the zigzag-ribbons of each pair, the laths resting upon the tapes.

3. A Venetian blind, as claimed in claim 2, wherein, a plurality of transverse tapes are arranged on each section of the zigzag-ribbons in spaced relation to each other.

4. A Venetian blind as claimed in claim. 2, wherein the tapes have a flat cross-section and lie in substantially the same plane as the fiat sections of the zigzag-ribbons.

5. A Venetian blind as claimed in claim 2, wherein the zigzag-ribbons consist of folded webbings having transverse stitched seams at the folds to form the joints.

6. A Venetian blind as claimed in claim 2, wherein the bottom piece has a U-shaped crosssection.

SIGFRID EMANUEL LID'IN.

REFERENCES CITED The following references are of record in the V Number Name 7 Date 1,378,378 Petterson May 17, 1921- 398,484 Wilson Feb. 26,1889

Images