US2409943A - Venetian blind - Google Patents

Description

Oct. 22,1946. v wo 2,409,943

VENETIAN BLIND Filed June 28, 1944 2 Sheets-Sheet 1 .50 7? W077 INVENTOR.

D. KWON VENETIAN BLIND Out. 22, 1946.

Filed June 28 1944 2 Sheets-Sheet 2 INVENTOR.

i027? ffzwogy Patented Oct. 22, 1946 OFFICE;

V VENETIAN BLIND Doin Kwon, Honolulu, Territory of Hawaii Application June 28, 1944, Serial No. 542,527

2 Claims.

This invention relates to Venetian blinds and it is one object of the invention to provide blinds of this character having an improved form of upper head bar and arrangement of ropes or cords for raising or lowering the blinds and angularly adjusting slats thereof.

Another object of the invention is to so form the head bar that slots are provided longitudinally therein and guide pulleys are mounted in the slots so that the ropes for adjusting the slats and raising or lowering the blind may be trained about the pulleys and extend longitudinally through the slots to sides of the head bar where they are trained through guides carried by the head bar and then downwardly into position to be grasped by a person who desires to adjust the blinds.

Another object of the invention is to provide a head bar formed from a plurality of sections which are mounted in spaced relation to each other to define slots or channels in which the pulleys and uides are mounted, the pulleys being mounted upon pins which pass through all of the sections and reinforce the head bar as well as serving as axles for the pulleys.

Another object of the invention is to provide a head bar which is of such formation that the cables cannot become tangled and in addition provide a guide for depending portions of the tilting cables which serves very effectively to hold the rear cables out of engagement with the front cables so that tilting adjustment of the slats may be very easily performed.

Another object of the invention is to provide a hanging cable separator adapted to be suspended from a screw eye at one end of the head bar and formed from a single strand of wire bent to form a shank having an open ring or eye at its upper end and rope-engaging eyes or arms extending from the lower end of the shank.

The invention is illustrated in the accompanyme drawings wherein:

Figure 1 is a front elevation of the improved Venetian blinds.

Figure 2 is a view from one side thereof.

Figure 3 is an enlarged view looking at one side of the improved blinds and showing the slats in a horizontal or neutral position.

Figure 4 is a view similar to Figure 3 showing the slats tilted into position for deflecting light upwardly.

Figure 5 is a view showing the slats tilted to deflect light downwardly.

Figure 6 is a top plan view of the improved blinds.

Figure? is a fragmentary view upon-an enlarged scale looking at one end of the blinds.

Figure 8 is a perspective view of the wire cable guide.

The slats l of the improved Venetian blinds are formed of strips of metal, thin wood, or any other suitable material and of such length that the blinds will fit the-window to which they are applied. Front and rear edges of the slats rest on narrow web strips which are secured to tapes 2 which extend the full height of the blinds and have their lower ends secured to a base bar 3 and their upper ends secured about upper bars 4 and 5 which are of suflicient thickness to support the slats and the base bar without sagging.

The head bar :6 which is to be mounted across the top of a window is formed of wood, metal, or other suitable material and consists of a center section I and front and rear sections ii and 9. A channel l0 extends longitudinally of the center section in the upper face thereof and in this channel are disposed pulleys I!) about which are trained ropes or cables I I which extend downwardly from the pulleys through openings in the slats I and are secured at their lower ends through openings near ends of the base bar 3. The pulleys ID are rotatably mounted by rods or pins l2 which pass through the sections forming the headbar and serve to brace them as well as serving as axles for the pulleys.

Referring to Figure 6 of the drawings it will be seen that the cables extend longitudinally in the channel 1 and are passed downwardly through a guide l3 formed of sheet metal or other suitable material and mounted at the left hand end of the head bar. By pulling upon the cables the base bar will be drawn upwardly and the entire Venetian blind raised. The cables may then be engaged with a conventional cleat on a window frame and the blinds will be held in a raised or partially raised position. When the cables are slackened the weight of the base bar will draw downwardly upon the cables and the blinds be lowered.

Front and rear cables or ropes l4 and I5 extend longitudinally in channels l6 formed in upper faces of the front and rear sections and are trained about pulley l1 mounted upon pins or rods l8 which pass transversely through all of the sections and constitute reinforcements for the head bar. These cables extend downwardly from the head bar and are secured through openings formed in end portions of the upper bars 4 and 5 and from an inspection of Figures 3, 4 and 5 it will be understood that these ropes or cables contwo top bars may be supported in a, common plane as shown in Figure 3 and hold the salts horizontal in. a, fully opened position. or one top bar may be raised or'lowered to tilt the slats upwardly as shown in Figure 4 or downwardly as shown in Figure 5. The cables M areused for shifting the front top bar 4 vertically and cables I5 are used for vertically shifting the rear top bar 5. If i-t'is desired to bodily lower the blinds so that the upper portion of the window is unobstructed and at the same time allow the blinds to shut out light from the lower sash all of the cables may be slackened and the blinds then lowered to the desired position, the cables being then again engaged with the cleats to support the blind in the adjusted position. The guideslt are each provided with flanges 2'0 and 21 through which fasteners 22 are passed to firmly secure the guides to the cross head sections.

' Sincethe cables I4 and I5 extend downwardly at the same side of the window it is desirable to prevent them from becoming tangled. In order to do so there has been provided a'rope guide 22. m

This rope guide is formed from a strand of wire which is doubled to form a shank 23 and has its end portions bent to form an eye 24' of the open ring type'in order that the eye may be snapped into engagement with a screw eye 25 which is screwed into the under face of the adjoining end of the intermediate crosshead section I. After the shank 23 has been formed the remaining 'portionof the wire strand is bent to form a cross 4 cross bar or the shank. Since the cables or ropes l4 pass through one eye 21 and the ropes l5 pass through the other eye of the cross bar tangling of the front and rear ropes will be prevented and the slats may be very easily angularly adjusted.

Having thus described the invention, what is claimed is:

1. In a Venetian blind having a base bar, front and rear top bars, front and. rear tapes extending betweenthe top bars and the base bar, narrow web strips secured to the front and rear tapes in vertical spaced relation to each other, slats disposed one above another and resting on said strips and a head bar, front and rear lines extending along the head bar with inner portions extending downwardly and secured to the front and rear top bars and outer portions extending downwardly at an end of the head bar, and a member to prevent tangling of thefront lines with the rear lines having a shank suspended from .the head bar and a cross head at the lower end of the shank formed with eyes throug which the. front and rear lines pass. 1

2. In a Venetian blind having a base bar, front and rear top bars, front and rear tapes extending between the top bars and, the base bar, narrow Web strips secured to the front and rear tapes in vertical spaced relation to each other, slats disposed one above another and resting on said strips and a head bar, front and rear lines extending alongthe head bar with inner portionsextending downwardly and secured to the frontvand rear top bars and outer portions extending: downwardly at an end of the head bar; .a member to prevent tanglingv of outer portions of the front lines with outer portions of the rear lines consisting of a screw eye carried by the head bar, and a separator formed from a strand of wire having end portions disposed in side by side relation to eachother to form a shank, extremities of the wire strand being bent to form an open eye engaged through the screw eye, and the intermediate portion of the wire strand being bent to form a, cross head having portions projecting from opposite sides of the shank, and forming line-receiving loops closed at their inner ends bytwisted portions of the strand.

. DOIN KWQN.

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