US 2587756 A
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Description (OCR text may contain errors)
March 4, 1952 H PALMISANO 2,587,756
CORD GUIDE FOR VENETIAN BLIND TILT RAILS Filed March 28, 1950 2 SHEETS-SHEET l Wzd 5M.
March 1952 1. H; PALMISANO 2,587,756
CORD GUIDE FOR VENETIAN BLIND TILT RAILS Filed March 28, 1950 2 SHEETSSHEET 2 INVENTOR. i 17 paZ7ZZ(5cz7Z&
Patented Mar. 4, 1952 CORD GUIDE FOR VENETIAN BLIND TILT RAILS Ignazio H. Palmisano, Chicago, Ill.
Application March 28, 1950, Serial N 0. 152,403
My invention relates to Venetian blind installations, and more particularly to the means for suspending and operating the blind. Usually, a head rail is employed as a base from which the blind is suspended; and the head rail forms a support for the attachment of hardware for the tilting and raising of the blind. Blinds constituted along the lines described are difficult to remove for cleaning, and some carry a mechanism when they are removed, so that the cleaning or washing operation may be detrimental to the mechanism and cause it to rust or bind when the blind is operated. It is therefore one object of the present invention to provide a Venetian blind which eliminates the head rail, and confines the control to the tilt rail and the hardware adjoining the same.
A further object is to devise a simple mechanism for the tilt rail for the lifting of the blind.
A still further object is to design supports for the tilting and retaining hardware which enable the tilt rail to be readily removed from the same when the blind is to be carried to a cleaning or washing location.
Another object is to make a connection between the blind and the accessory hardware whereby the blind may be tilted in the usual manner Without affecting the lifting mechanism.
A still further object is to design a blind whose uppermost slat is at a height well above the bottom of the facia plate, so that no space intervenes to permit drafts or the entrance of light when the blind is closed.
An additional object is to design the lifting mechanism in a manner to belargely concealed and allow the blind to present a neat appearance.
An important object is to employ a minimum number of parts in the makeup of the improved blind, whereby to render its cost considerably less than that of a comparable standard blind.
With the above objects in view, and any others which may suggest themselves from the description to follow, a better understanding of the invention may behad by reference to the accompanying drawings, in which Fig. 1 is a front elevation of the improved blind, partly broken away;
Fig. 2 is a magnified section on the line 2-2 of Fig. 1;
Figs. 3 and 4 are, respectively, detail sections on the lines 3-3 and 4-4 of Fig. 2;
Fig. 5 is a top plan view of one form of the blind asremoved from its frame;
Fig. 6 is an enlargement of a detail in the upper left-hand portion of Fig. 1;
Fig. 7 is a section on the line |1 of Fig. 6;
Fig. 8 is an enlargement of a detail in the upper right-hand portion of Fig. 1;
Fig. 9 is a section on the line 99 of Fig. 8 i
Fig. 10 is a view similar to Fig. 5, showing a modification Fig. 11 is a fragmental plan view, on an enlarged scale, showing the tilt rail and roller for guiding one of the lifting cords downwardly;
Fig. 12 is a front view of the showing in Fig. 11;
Fig. 13 is a section on the line l3-l3 of Fig..12;
Fig. 14 is a perspective view of a fragment of the blind, showing one form .of ladder-tape rungs; and
Fig. 15 is a similar view,.showing another form of such rungs.
In accordancewith the foregoing, '25 denotes the sides and 2| the top of a conventional window frame designed to receive the improved Venetian blind. For this purpose, the sidesZll are provided with standard bracket plates 23 which are extended with frontal keepers 24 for the'facia board 25. One of the bracket plates 23 carries a suit- .able tilt mechanism 23, while the other plate carries a standard retainer 30. The tilt mechanism 28 is extended with a receptacle3l in which one spindle 33 of a tilt rail 35 is fitted; and the retainer 30 has a receptacle 36 designed to seat the other spindle 31 of the tilt rail. Thus, by opening the latch 40 of the retainer 30 as shown in Fig. 9, it is possible to remove the spindle 3'! from the retainer 30; and the other spindle 33 may be withdrawn from the receptacle 3! by pulling action, so that the tilt rail and the blind depending therefrom become separatedfrom the window frame and its mechanism in such event.
The blind is made with the usual series of slats 45, these being supported between conventional ladder-tapes 46. These have transverse rungs 41, and Fig. 3 shows that in each case one of the rungs 41 overlies the slat 45, while the companion rung underlies the same, this construction forming a retainer for the slat against wind or other disturbance.
The lifting mechanismior the blind comprises a pair of cords 50 which rise from a position in front of the blind to pass through an inclined tube 5| carried by the tilt rail 35 to positions over the same. The tube 5! has a freely journaled roller 53 for the guidance of the cords 55, as well as a conventional cord lock 55.
Fig. 5 shows that the cords 50 diverge after rising from thepassage 5B in which the tube 5| is located. Thus, one of the cords extends-to a position :centrally of the proximate ladder-tape 46, while the other cord extends a farther distance to a position proximate to the remote ladder-tape 46 on the opposite side of the blind. In both cases, the tilt rail is made with a cavity 58 and a guide roller 50 for training the cord sections 6| downwardly along the inner side of the related ladder-tapes 46, and midway between the sides thereof, as shown in Figs. 11 to 13. Fig. 2 shows that the tilt rail 35 is made considerably wider than the bottom rail 65 of the blind; and Fig. 3 shows the position of one of the descending lifting cord sections as spaced both from the ladder-tape 46 and the related edges of the upper slats 45.
It is noted that a pin 59a is embedded in the rail crosswise, the outer portion of the pin terminating somewhat beyond the edge of the rail. Such outer portion is free to receive the roller 60, the training of the cord section 61 over the same in a downward directionas indicated in Fig. 5-serving to retain the roller from sliding off the pin. The absence of any retaining element in the free end of the pin therefore facilitates the easy mounting or removal of the roller.
A vertical passage 5% is shown adjoining each cavity 58. This passage serves as a clearance for the downward travel of the cord section 6| and the position of the passage is calculated to lead the cord section to be spaced from the laddertape and upper slats as stated before and shown in Fig. 3. from drawing on the edges of the slats or being frayed thereby; and the passage 59b also maintains the cord alined on the roller. When the ladder-tapes are fastened to the tilt rail, as shown in Fig. 2, they are kept by the outer ends of the pins 59a from frictionally engaging the rollers 60 or interfering with the rotation thereof. At the same time the tapes serve as guards relative to the pins to further insure the retention of the rollers thereon.
Fig. 14 shows cord-type ladder-tape rungs 61 secured to the tapes by stitching 68; and Fig. 15 shows strand-type rungs 59 in groups forming part of strips sewed to the ladder-tape.
A modification of the tilt rail 35 is shown in Fig. 10. A cover 75 is laid over the tilt rail and secured marginally by clips 76. In order that the cover may not interfere with the free action of the cord sections 6!, the rail 35 is recessed along the middle as indicated at 11 to seat the cord sections 6! on the floor of the recess, the
side walls of the latter being made with entrances 18 leading the cords to the perforations 58. The lifting cord sections 6| are therefore protected from dust by the cover and the latter also conceals them from view.
It will be apparent that the novel Venetian blind construction has a number of advantageous features. First, the supporting and tilting hardware of the blind is carried entirely by the window frame brackets 23, so that the removal of the blind in the manner previously described is easily accomplished, enabling the blind to be carried to the place where it may be cleaned or Washed. Further, the instant construction eliminates the need for, and cost of, the conventional head rail by employing the top 2| of the window frame as the basic support-of the blind. Further, the passage of the lifting cords in upward direction through the tilt rail 35 is guided by the tube 5|, whose inclined position affords a convenient entrance for the cords from the front of the blind to a position centrally of the tilt rail, the roller 53 facilitating the training of the cords to the horizontal position indicated in Figs. 1 and 5. Further, the training of the cord sections 6| to alternate sides of the This arrangement prevents the cord blind is simply accomplished by guiding the cords over the transversely-journaled rollers 60 in the side edges of the tilt rail; and the descent of the cords is directed, inside the related ladder-tapes for the maximum concealment of the cords. Further, Fig. 7 shows that the uppermost slat of the blind is well above the bottom of the facia board 25, so that no passage occurs between the same and the blind to admit drafts or light. Further, the spread of the ladder-tapes in upward direction by virtue of the greater width of the tilt rail 35 over that of the bottom rail 65, plus the accurate position of the passages 59b, affords a space along the edges of the slats for the passage of the lifting cords with clearance from the ladder-tapes and the related edges of the upper slats. Further, the arrangement of the rungs 41 on alternate sides of the slats at each point of passage anchors the slats against vibration or displacement due to wind or other disturbances. Further, the pins 59a are strongly embedded in the tilt rail and enable the rollers 66 to be mounted or removed with ease and to be retained on the pin without extra parts. Finally, the novel construction is accomplished by a minimum of simple and durable parts.
While I have described the invention alon specific lines, various minor changes or refinements may be made therein without departing from its principle, and I reserve the right to employ all such changes and refinements as may come within the scope and spirit of the appended claim.
A Venetian blind installation for window frames comprising supporting brackets attached in the top corners of the frame, a tilt mechanism carried by one supporting bracket, a bearing hanger carried by the other supporting bracket, a tilt rail suspended operatively between the tilt mechanism and the bearing hanger, a conventional Venetian blind suspended from the tilt rail, and a lifting mechanism associated with the tilt rail L and including cords trained over the same, guide means near the side edges of the tilt rail for continuing said cords in downward direction to assume positions inwardly of the blind tapes, such guide means occurring opposite alternate tapes of the blind and including cavities in the edges of the rail, pins driven through said cavities transversely into the rail and with outer ends projecting slightly from the rail edges, and rollers slidable on the pins from the outside to positions guiding said cords where they assume the downward course, said tapes lying against the outer ends of the pins to normally clear the rollers but form guards for them in case they assume an outward sliding tendency.
IGNAZIO H. PALMISANO.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,007,376 Latham July 9, 1935 2,103,394 Wade Dec. 28, 1937 2,122,224 Wade et al June 28, 1938 2,190,884 Rosenstein Feb. 20, 1940 2,200,349 Walker May 14, 1940 2,297,627 Loehr Sept. 29, 1942 2,407,554 Isserstedt Sept. 10, 1946 2,481,714 Bezjian Sept. 13, 1949