US2283640A - Venetian blind - Google Patents

Description

May 19, 1942. D. KWON VENE'IIAN BLIND Filed March 17, 1941 2 Sheets-Sheet 1 INVEN ro'i? ATTORNEYS WITN E55 wrmna D. KWON VENETIAN BLIND Filed March 17, 1941 May 19, 1942.

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INVENTOR ATTO RN 2Y5 Patented May 19, 1942 VENETIAN BLIND Doin Kwon, Honolulu, Territory of Hawaii Application March 1'7, 1941, Serial No. 383,853

2 Claims.

This invention relates to Venetian blinds, and its general object is to provide a blind in which the entire slat assembly thereof can be lowered from a normal raised position for disposal at any position below the top of a window frame or the like, to provide an open space above the assembly for the'free passage of light and unobstructed ventilation.

A further object is to provide a Venetian blind in which the slats can be raised and lowered in the usual manner, as well as tilted from 9. normal horizontal open position, in either direction, to a closed position, and the means for tilting the slats also act for suspending the slat assembly at various heights with respect to the top of the window frame, and the assembly can be raised and lowered regardless of the position of the slats with respect to each other.

Another object is to provide a Venetian blind capable of performing the above functions, that is simple in construction, inexpensive to manufacture, and extremely efficient in operation, use and service. x

This invention also consists in certain other features of construction and in thecombination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings andspecifically pointed out in the appended claims;

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like. or corresponding parts throughout the several views,

and in which:

Figure l'is a front view of the blind which forms the subject matter of the present invention with the slat assembly in a lowered position and with the slats completely -open.

Figure 2 is a sectional view taken approximately on line 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a fragmentary top plan view of the head or supporting bar.

Figure 4 is a sectional view taken approximately on line 4-4 of Figure 3, looking in the direction of the arrows.

Figure 5 is a view similar to Figure 2, but with the slat assembly tilted in one direction.

Figure 6 is a similar view with the slat assembly tilted in an opposite direction.

Figure 7 is also asimila'r view' but with the slat assembly raised to its uppermost position and with the slats completely open, as in Figure 2.

Figure 8 is a fragmentary perspective view of one of the slats.

Figure 9 is an end view looking toward the left of the upper portion of Figure 1, and also illustrates the lower portions of the tilting cords,

Referring to the drawings in detail, the reference numeral I indicates the head or supporting bar, which is to be fixed in place, to the frame of a window or the like,.in the usual manner and by any suitable means. The upper face of the bar is recessed longitudinally for the major portion of its length to provide a chamber 2 of a depth to allow for free running movement of the cords which will be later described, and one end of the bar is centrally notched as at 3; while its opposite end is provided with a pair of parallel notches 4. Secured within the notch 3 is a catch 5, and the hatches I have secured therein catches 5 and I which like the catch 5 are of the pulley and pivoted dog type, the dogs 8 thereof having teeth for disposal in biting engagement with the cords and the latter are trained about double grooved pulleys 9 mounted in the houslugs 10 of the catches, as clearly shown in Figures 3 and 4. t

The cords are likewise provided with three pairs of guide pulleys, indicated respectively by the reference numerals Ii, l2 and I3, and the pulleys of each pair are disposed adjacent the ends of the head bar, as well as rotatably mounted in holes extending through the head bar, as best shown in Figure 4.

The slat assembly includes upper and. lower cross bars it and I5 and the upp r bar M is slotted transversely adjacent its ends as at IS, with a pair of web members i'l bridging each slot at the bottom thereof.- The upper cross member is shown as being of rectangular formation in cross section, to provide a flat bottom face that has secured thereto a strip l8, between which and the bottom face are fixed the upper ends of a pair of fabric ladder tapes arranged in the usual manner, to provide front and rear portions 89 and 20, and the lower or looped portions of the tapes are secured to the bottom face of the lower-cross bar l5 which is of oval shape in cross section in the form shown, and is of a length greater than that of the upper cross bar.

Secured to and bridging the-front and rear portions l9 and 20 of each of the tapes and disthat purpose, so as to exclude any passage of light, as will be apparent. The slats are slotted transversely as at 24, in the usual manner, for the passage of the portions 25 of the elevating cord for the lower cross bar and the slats, and the portions 25 extend through the lower cross bar and have their lower ends fixed thereto, as

well as covered by the tapes.

The portions 25 of the elevating cord extend through the slots iS-of the upper cross bar and about the center guide pulley l2 of the hear bar, as well as about the double grooved pulley of the catch 5, to be acted upon by the dog thereof, with the result it will be seen that the elevating cord acts to raise the'lower cross bar for raising the slats in the usual manner, and the lower cross bar and slats will fall by gravity when the elevating cord is released.

Connected to the undersides of the front web members II are the ends of portions 26 of a tilting cord 21, and connected to the undersides of the rear web members III are the ends of the portions 28 of a tilting cord 29. I The portions 26 extend about the outer sides of the front web members and through the head bar for disposal about the guide pulleys I3 and the pulley 9 of the catch 1, while the portions 28 extend about the outer sides of the rear web members l1 and through the head bar for disposal about the guide pulleys II and thence through the catch 6, in the same manner as the portions 26. Each of the cords preferably have their portions knotted together as at' 30 adjacent their lower or looped ends, to facilitate gripping the same, for operating the blind, as will be apparent upon inspection of Figure l.

From the foregoing, it will be seen that when the cord 2? is pulled, the upper bar It will be tilted rearwardly and when the cord 29 is pulled the bar I l is tilted forwardly, and of course the slate will be tilted accordingly, through the medium of the tapes and the web strips 2i. In view of the fact that the cords 21 and 29 act to suspend the slat assembly with respect to the head bar I, it will be further seen that the assembly in its entirety can be-raised and lowered and held in any position with respect to the head bar. It will of course be understood that the assembly will drop by gravity when the cords 27-.and 29 are released, from their catches, and

' inspection of Figure '1. i

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that .changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

What I claim is:

1. A Venetian blind comprising a head bar to be fixed to a window frame,-a slat assembly including upperand lower cross bars, tapes including front and rear portions fastened to the upper and lower bars, slats between the tape portions, resting means for the slats and connected to and between the tape portions, an elevating'cord for the slats and connected to the lower bar, said upper bar being slotted transversely adjacent its ends for the passage of the elevating cord therethrough, front and rear webs bridging the slots, a pair of tilting cords for the assembly, one of the tilting cords being connected to the front webs and the other to the rear webs, said tilting cords being disposed about the outer sides of their webs and cooperating with each other for suspending the assembly at various heights with respect to the head bar, guide pulleys and catch means for the cords, and said pulleys and catch meansbeing mounted in the head bar.

2. A Venetian blind comprising a head bar to be fixed to a window frame, a slat assembly including upper and lower cross bars, tapes in-"* cluding front and rear portions fastened to the upper and lower bars, slats between the tape portions and having recessed front edges for receiving the front portions of the tapes therein, resting means for the slats and connected to and between the tape portions at equi-distantly spaced intervals throughout the length thereof, an elevating cord for the slats and having its ends connected to the lower bar, a strip secured to the bottom face of the upper bar and receiving and securing the upper ends of the tape portions between the same and the upper bar,

,about the front side' of the upper bar and the other about the .7 rear side thereof, said tilting cords cooperating with each other for suspend-' ing the assembly at various heights with respect to the head bar, a pair of guide pulleysfor each cord, a catch for each cord, and the pulleysand catches being mounted in the head bar with the cords associated therewith for the disposal of. the elevating cords from one end of the head bar and the tilting cords from the opposite end thereof.

DOIN KWON.

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