US2228621A - Rolling blind - Google Patents

Description

J. s. zwART 2,228,621 RoLLiNG BLIND Jan. 14, 1941. 7

Filed Aug. 11, 1939 v V Inventor Jan S' eral Z W ti I I v V v -8 W 2 flff orng js r Patented Jan. 14, 1941 UNITED" STATES PATENT OFFICE ROLLING BLIND Jan Sjoerd Zwart, Batavla, Java, Dutch E381; Indies Application August 11, 1939, Serial No. 289,608 In the Netherlands September 2, 1938 1 Claim.

wires wound around the individual laths' in the shape of loops, each-3100p being led through the closed end of the wire loop of a neighbouring lath. 4

According to my invention the closed end of each such loop is arranged at some distance from 1 the lower edge of the lath around which the loop is wound; it is bent approximately perpendicular to this lath and has such a length that it partly covers the upper edge of the following lower lath.

Thus I obtain a rolling blind with the adjacent laths overlapping each other along their horizontal edges, which can easily be rolled up and out and secures perfect protection against sunshine and rain, while clefts are formed between the individual laths tor the passage of air for ventilation.

In the drawing aifixed to this specification and forming part thereof an embodiment of my invention is illustrated diagrammatically byway of example. j

In the drawing Fig. 1 is a side view, partly in section, of a nulling blind according .to the invention, and

Fig. 2 is a perspective view of 91 part of this rolling-blind. 1

Referring to the drawing, I designates the lath:

or strips of which the rolling blind is compose and which'are uni-ted and hinged to each other by means of one or several chains the links ;of which are formed by metal wire loops I wound around the laths I. The closed end I of every such loop is" bent approximately perpendicular and arranged somewhat distanced from the lower edge of the lath around which the loop is wound. H

' This bent part of the loop rests on the upper edge of the following lath and has such a length that it partly covers said upper edge.

From each loop the metal wire extendsup- 5" wardly in two branches which are wound around the lath. 'The ends form hooks land are put through the bent part of the loop.

Since the bent part of the loop, which rests on the upper edge oithe following lath and in this 10 l way forms the hinging point oi this lath, is arranged at some distance from the lower edge of the lath, the rolling blind when running out presents a gradual arrangement of the lathe, the metal wires and in particular-the ends of the 15 wires. which are bent forwards and shaped like hooks, giving rise to .clefts between'eachlower and the upper edge 'of adjacent laths suflici'ent to let through enough air for the ventilation,

'while at the same time a complete protection against sunshine and rain is obtained. The new rolling blind can easily be wound up by a very simple lifting mechanism. 7 v

The, revolving shutter according to this invention may also be applied in the form of a Floren- 25 tine blind. j f

I wish.it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications 3 will occur to a person skilled in the art.-

I claim: Rolling blind comprising in combination, a plurality of laths hinged to each other, a metal wire wound around each of said laths in the form perpendicular to the lath, around which thisloop H is wound, and is arranged, in some .distance from the lower edge of this lath, so as to partly cover the upper edge of the adjacent lower lath.

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