US2119583A - Window shade - Google Patents

Description

June 7, 1938. E. w. KINGSBURY WINDOW SHADE Filed July 28, 1957 INVENTOR, ZZen, W KwgJuJfy,

ATTORNEY.

Patented June 7, 1938 T "STAT t "2,119583 *WINDOW SHADE V EllenW.Kingsbury, ftuthcrford NaJ. Application-July 2s, wans rial N0. 156,014 .2 claims. (ot acf io When a window shade of the well known type, to wit, *wound'on aspring roller, becomes soiled or worn at its lower or free end, which is formed with a hem to receive the usual stiffening stick,

it is not possible to reverse it end for end and use such stick for stiffening the now free end since the latter end would be without the hem to receive the stick. By saying that this is not possible I mean that it is not ordinarily possible of accomplishment by the user, or in the absence of the means, as the proper sewing machine, for forming a reserve hem with a stitch precisely simulating that of the worn or soiled hem or having some other special and of course conventional characteristic.

According to this invention the shade proper is caused initially to be provided with two hems, one at each end, and to one such end of the shade proper means in the form of flexible sheet material, say like that of the shade proper itself, is attached by which to connect to the roller, as by tacking, the completed shade comprising the shade proper and such means.

The said means may be a strip of narrow width but having a length equal to the width of the shade proper.

But whatever its form it is preferably attached to the shade proper with these observations in view: That the attaching line shall be'so located as most likely to prevent disruption of the stitching or equivalent attaching medium as an incident of the winding or unwinding of the shade and to insure the shade undergoing winding on the roller without disposition to become inordinately creased or wind irregularly or unduly increase the bulk of the wound mass; and that the attaching shall be so effected, to wit, of the mentioned connecting means to the reserve hem, that at least one ply of such hem shall not be caught by the attaching medium, whereby the reserve hem as to such ply will appear unmutilated when the shade is reversed. Of course, such attaching will usually be by stitching, and in order that such stitching may be readily and quickly removed it is a feature of the invention that stitching is employed that may be readily pulled out, as chain-stitching.

In the drawing,

Fig. 1 is a fragmentary perspective view of a shade-and-roller assembly embodying the invention in its preferred form;

Fig. 2 is a similar view of the material of the shade proper and the strip here forming the said connecting means as they exist when such strip has been attached to such material and before i the reserve hem hasbeen formed "the latter;

' Eig; is=an enlarged sectional View in the plane of the chain-stitching line a of Fig. 1.

The shade proper is indicated at l and may be 5 composed of any suitable flexible sheet material, as the fabric commonly employed for the purpose.

It here has one end portion formed with a hem 2, as usual, receiving the stiffening stick 3: the

stitching 4 for this purpose is here shown as of the usual zig-zag type.

I In'carrying out my invention according to'the present example the mentioned connecting means 1 is formed by a strip 5 of flexible'sheet material,

preferably the same as that of the shade proper, 151

being as long as the latter is wide but usually being only a 'few inches wide. This strip is laid across one face of the shade proper so as to extend parallel with and be suitably distanced from I that end edge la. of the shade proper which is 20 I usually tacked to the roller, thus to leave extending beyond it a terminal region lb of the shade proper (Fig. 2) having sufficient width to form a hem. of about the width of the hem. 2, whereupon the strip is stitched to the'shade 25 proper along a line a which will be parallel and close to that long edge of the strip which next adjoins said end edge Ia of the shade proper.

Then a hem 6 is formed in the shade proper simulating the hem 2 but so as to leave the strip 30 5 of course unenveloped by the hem. This may be done by folding the body portion lc of the shade proper along a line bb parallel and more or less close to the stitching line a and then, having lapped inwardly the free end edge of end por- 35 tion lb, as at 1., stitching together such end portion and body portion lb, through such lap, such stitching, as at 8, preferably being conventionally formed in some special pattern, such as that characterizing stitching 4. 40

When the completed shade has been thus constructed it may be secured to the roller 9 by tacking, as at It, the free end margin of the strip to such roller, this being preferably done so that,

as shown in Fig. 1, the strip will stand outwardly 45 lapping the hem 6. The object in thus assembling the shade with the roller is to present the fold to of the hem next to the roller whereby there will be assurance that the shade will wind on the roller without irregularity and the inter- 50 ference with such winding and inordinate creasing which would ensue if the fold 6a were outward of the shade relatively to the roller.

An important feature of my invention is that the connecting means 5 of sheet material laps 55 versed the other the reserve hem and in that, relation is stitched thereto inasmuchas thereby a strong union between them exists. V Further, they stitching at line a being 'so effected that only the ply of the hem 6 which next 1 adjoins the strip is caught by the stitching, when the strip isr removed and the shade has been rethe stitching. t. V The stitching at dis preferably of some type,

; 'which I herein term the pull-thre ad-" type;

Iclaim is':.-, c a 1. The-herein described assembly comprising a which willpermit its ready withdrawal as shown byFig. 3, illustrating chain-stitching; if the end 41' of the stitching be pulled upon; such stitching may be readily removed or ravelled out only to leave a line of needle holes. j

Having thus fully described my invention what roller,- a shade, proper of flexible sheet material to-be wound tong-the roller and having each end folded back and therebyforming a stick-receiv- 1 ing hem, and 'a connecting strip of flexible sheet ply will appear unmutilated by material extending transversely of the shade proper and secured to the roller and having one longitudinal marginal portion thereof lapping oneply of one hemt'an'd stitched to said ply independently' of the other ply of the same hemalong ,a line parallelingand removed from the fold of the latter hem. V t V 2. The herein described assembly comprising 7 n a roller, a shade properof flexible sheet material 7 to be Wound on the roller and having each end folded back and'thereby forming a. stick-receiv;

; ing hem, anda connecting' strip of flexible sheet material extending transversely of a the shade proper andsecured to the roller and having one longitudinal marginal portion thereof lapping that ply of onehem which will be'the relatively outer ply of such hem when the shade is wound on the roller and stitched to said ply independ-l ently of the other ply of the same hem along a :line paralleling and removed from the fold of the latter hem,

7 ELLEN w. KINGSBURY; a

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