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Publication numberUS2140049 A
Publication typeGrant
Publication dateDec 13, 1938
Filing dateMar 21, 1938
Priority dateMar 21, 1938
Publication numberUS 2140049 A, US 2140049A, US-A-2140049, US2140049 A, US2140049A
InventorsGrauel Edwin L
Original AssigneeGrauel Edwin L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Roller window shade construction
US 2140049 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Dec. 13, 1938. E; L, GRAUEL 2,140,049

. ROLLER WINDOW SHADE CONSTRUCTION 7 Filed March 21, 1938 2 Sheets-Sheet l INVENTOR. BY Eon 0v 1.. $1M 051..

ATTORNEYS.

Mq- QM Dec. 13, 1938. .E, L. GRAUE L ROLLER WINDOW SHADE CONSTRUCTION Filed March 21, 1938 2 Sheets-Sheet 2 mvsmox [aw/1v L. Game/4.

wuqdm ATTORNEYS.

Patented Dec. 13, 1938 UNITED STATES PATENT OFFICE ROLLER WINDOW SHADE CONSTRUCTION Edwin L. Grauel, Cincinnati, Ohio Application March 21, 1938, Serial No. 197,205

3 Claims.

in the separate slotted webs are joined together and so-constructed that desired lighting effects may be obtained in a window opening.

Another object of my invention is the provision of a double webbed shade or blind wherein the webs assume a parallel spaced relationship when withdrawn from the roller, but which, not Withstanding the spaced relationship of the webs when withdrawn, form a smooth, non-bulging circular looped formation about the roller when the double webs are rolled up on the roller.

This application is a continuation in part of my application, Serial No. 87,284, filed June 25, 1936. In the noted application, the general combination of the roller and shade per se is clearly set forth. In this application it is my object to disclose a double webbed shade having the webs joined together in an improved manner. It is further my object to disclose an improved method of joining the webs and roller in a completed assembly ready for installation.

If two webs of flexible material are joined together by spaced flaps and it is then attempted to roll the two webs in coiled loops about a roller which is round in cross sections, the webs will not lie smoothly and coil in even loops. This is because the outermost of the webs, when rolled up, requires a greater peripheral distance than the inner as a result of which the outer web will buckle.

In the art, prior to my invention, the use of duplex shades was a known development. The joining together of the webs, however, prevented the use of duplex shades if it was desired to roll up the webs on a roller of round cross section. Thus, it will appear in the German Patent No. 382,758 Ausgegeben, October 5, 1923, wherein spaced webs having cut out portions are joined together by fabric strips intermediate the cut out portions a roller, round in cross section was not J proposed. Had such a roller been suggested and had the spacing of the fabric strips and cut out portions been uniform, the double webbed shade could not have been rolled up without buckling.

It is in the appreciation of the necessity of making proper allowance in positioning the interconnecting strips between the Webs which permits the rolling up of the double web on a round roller that my invention is particularly directed.

In this application, certain other improvements in assembly and combination over the combination shown in my copending application, Serial No. 87.284, will be further described and claimed.

Referring to the drawings:

Figure 1 is a plan view of a blank for a double shade cut and ready to assemble.

Figure 2 is a front elevation of the blank shown in Fig. 1 after assembly in a window shade, the

view being shown from the interior of the room looking out the window.

Figure 3 is a sectional view of the shade assembly shown in Fig. 2.

Figure 4 is a rear elevation of the shade or blind assembly shown in Fig. 2 from outside the window looking in. 7

Figure 5 is an enlarged side elevation of the i shade at the start of unrolling from the roller.

Figure 6 is a horizontal section along the lines 6+6 in Fig. 3.

Figure '7 is a vertical section through the assembly shown in Fig. 2 in a normal position.

Figure 8 is a vertical section through the assembly shown in Fig. 7 in an extremely extended position with thecut out portions in the double shade in registry, so as to transmit light through the cut outs.

Since a certain mathematical calculation is necessary in connection with the manner of attaching two flexible webs together so that the two webs will roll smoothly without buckling on the roller a reference to this feature of my invention will first be made.

Supposing that the roller of a shade is one inch in diameter and itis proposed to attach together at spaced intervals two shades and to so space the attaching devices as to permit smooth coiling of the shades on the roller.

The single web of the duplex shade which first forms a complete loop around theroller will occupy a peripheral length of diameter of the roller plus twice the thickness of the web times 3.14159. The next overlying layer or-web will require a greater peripheral length equal to the diameter of the roller plus twice the thickness of the first web plus twice the thickness of the overlying web times 3.14159. -'I'hus, if the two webs are connected together by attaching strips which do not compensate for the variation in peripheral length required for each complete loop by the two webs the outermost web will buckle.

If there are spaced openings in the webs and the attaching strips are formed by tabs cut out on three sides, then the spacings of the cut-out portions of that web which lies outermost in the coiling or looping over the roller must be sufflciently greater than the spacing of the cut-out portions of the innermost web to allow mathematically 2t 3.14159 greater spacing between the cut-outs in the outermost web, in which formula t equals the thickness 01' the web. Thus, if the thickness of the web is .007, the allowance in spacing of the cut-out tabs in the outermost web is .007 times 2 times 3.14159. This allowance, it should be understood, is only proper when the tabs cut out on three sides and articulated on the fourth side, forming the connections between the two webs lie within the space in each web from which the tabs are cut outwhen the double webs are coiled or looped around the roller.

With this theory of proper mathematical spacing explained, I will now describe the further development of my window shade construction, as illustrated in the drawings.

The blank for the double shade is a flexible sheet of material having a short side I and a long side 2 divided along a line 3. The short side, which will comprise the shade visible from within the enclosure looking out the window, is provided with a series of spaced attaching tabs 4 cut out along the bottom and sides, and articulated to the side I along lines of articulation 5. The long side or pull side is also provided with a series of partially cut out tabs 6 articulated to the side 2 along lines of articulation i.

Referring to Fig. 3, it will be observed that when the duplex shade has the several flexible webs thereof connected together by means of overlapping and adhesive juncture of the tabs 4 and 6 that not only are spacers provided, but vanes are formed which induce a natural circulation of air upwardly through the vents. Thus, in Fig. 3 the arrows la indicate the path of air currents through the duplex shade.

In Fig. 2. the spacing tabs are interlapped and secured together either by stapling, stitching, sewing, or adhesive Junction. A shade roller 8 is positioned along the line 5 and the short side I is laid over on the long side 2. Then the spacing tabs are secured together. The duplex shade may be stapled to the roller as indicated at 9 or adhesively secured thereto.

Fig. 6 is a horizontal section showing the spacing tabs secured together. Fig. 7 shows the shade in a normal ventilating position and Fig. 8 shows the shade under extremely downwardly pulled tension with the cut-out ventilating openings in the webs in such registry that light will pass through the openings as indicated at l0.

It should be remembered that in the positioning of the series of cut-out attachment flaps, those on the short or inner web are suitably rial in the shadeand the facilities for assembling the shades.

Of course, the specific rectangular shape of the cutout attachment flaps may be varied to suit particular ideas of artistic design, conforming to the mechanical principle involved in assembling the duplex shades.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A double window shade mounted on a spring tensioned roller, said shade comprising two parallel webs having ventilating openings formeo therein by flaps cut out from the webs said flaps being articulated along parallel lines to said webs,

and flaps of one web being permanently and immovably joined to the corresponding flaps of the other web thereby forming vanes for directing air currents from a ventilating opening in one web to a ventilating opening in the other.

2. A double window shade mounted on a spring tensioned roller, said shade comprising two parallel webs having ventilating openings formed therein by flaps cut out from the webs said flaps being articulated along parallel lines to said webs, and flaps of one web being permanently and immovably joined to the corresponding flaps of the other web thereby forming vanes for directing air currents from a ventilating opening in one web to a ventilating opening in the other, the ventilating openings and flaps in that web positioned outermost as the webs pass around the roller being vertically spaced a greater distance apart than the flaps in the innermost web.

I 3. A double window shade mounted on a spring tensioned roller, said shade comprising two parallel webs having ventilating openings formed therein by flaps cut out from the webs said flaps being articulated along parallel lines-to said webs, and flaps of one web being permanently and immovably joined to the corresponding flaps of the other web thereby forming vanes for directing air currents from a .ventilating opening in one web to a ventilating opening in the other,the ventilating openings and flaps in that web positioned outermost as the webs pass around the, roller beingvertically spaced a greater distance apart than the flaps in the innermost web, the spacing of such greater distance being calculated on the formula 2t 3.14159, where t is equal to the thickness of the webs.

EDWIN L. GRAUEL.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2569689 *Apr 29, 1946Oct 2, 1951Porter William HVentilator
US2865446 *Aug 11, 1955Dec 23, 1958Du PontWindow covering
US3195616 *Jun 1, 1962Jul 20, 1965Russell E TaberCorrugated, multi-convoluted selfrecoiling sheet
US3444919 *Aug 5, 1968May 20, 1969Paul KarollMultiple panel screen
US4020889 *Aug 2, 1976May 3, 1977Paul KarollApparatus for manipulating a multiple panel screen
US4991327 *May 24, 1989Feb 12, 1991Lane Frances RCard display
US5287908 *Dec 19, 1991Feb 22, 1994Hunter Douglas Inc.Window covering assembly
US5313999 *May 17, 1991May 24, 1994Hunter Douglas Inc.Fabric light control window covering
US5320154 *Jun 20, 1991Jun 14, 1994Hunter Douglas Inc.Method and apparatus for mounting a retractable window covering
US5339883 *Oct 20, 1992Aug 23, 1994Hunter Douglas Inc.Covering assembly for architectural openings
US5392832 *Nov 30, 1992Feb 28, 1995Hunter Douglas Inc.Covering assembly for architectural openings
US5394922 *Apr 13, 1992Mar 7, 1995Hunter Douglas Inc.Fabric light control window covering
US5419385 *Jul 29, 1993May 30, 1995Hunter Douglas, Inc.Double sheet light control window covering with unique vanes
US5454414 *Oct 20, 1992Oct 3, 1995Hunter Douglas Inc.Window blind material and window covering assembly
US5456304 *Jul 29, 1992Oct 10, 1995Hunter Douglas Inc.Apparatus for mounting a retractable covering for an architectural opening
US5538065 *Mar 29, 1993Jul 23, 1996G+E,Acu E+Ee Raud; Otto A.Light-exclusion covering, method for its production and a device for actuation of the light-exclusion covering
US5547006 *May 4, 1993Aug 20, 1996Hunter Douglas Inc.Roll-up cellular shades
US5558925 *Feb 13, 1995Sep 24, 1996Cellular Designs Unlimited, Inc.Window treatment article
US5573051 *Feb 6, 1995Nov 12, 1996Judkins; RenVenetian type blinds
US5601129 *Jan 9, 1995Feb 11, 1997Hunter Douglas Inc.Roller and clip for mounting a flexible material
US5638880 *Nov 9, 1993Jun 17, 1997Hunter Douglas Inc.Fabric light control window covering with rigid vanes
US5664613 *Jun 3, 1996Sep 9, 1997Verosol Usa Inc.Light control window covering
US5692552 *Jun 10, 1996Dec 2, 1997Judkins; RenVenetian type blinds
US5718799 *Jun 7, 1995Feb 17, 1998Hunter Douglas Inc.Fabric light control window covering
US5791393 *Mar 31, 1997Aug 11, 1998Judkins; RenShade operator
US5806579 *Jul 18, 1997Sep 15, 1998Judkins; RenVenetian type blinds having opposed lift cords
US5839494 *Dec 27, 1997Nov 24, 1998Judkins; RenBottom and top stacking venetian type blind with fixed headrail tilt
US5845690 *Feb 18, 1997Dec 8, 1998Hunter Douglas Inc.Fabric light control window covering with rigid vanes and support cords
US5855235 *Feb 18, 1994Jan 5, 1999Hunter Douglas Inc.Retractable window covering
US5888639 *May 23, 1997Mar 30, 1999Newell Operating CoCellular panel and method and apparatus for making the same
US5897731 *Aug 21, 1997Apr 27, 1999Hunter Douglas Inc.Method and apparatus for manufacturing a looped cellular shade
US5927370 *Nov 18, 1997Jul 27, 1999Judkins; RenRelease brake shade operator
US6001199 *May 16, 1994Dec 14, 1999Hunter Douglas Inc.Method for manufacturing a fabric light control window covering
US6033504 *Aug 28, 1998Mar 7, 2000Judkins; RenMaterial for venetian type blinds
US6045890 *Jun 23, 1997Apr 4, 2000Newell Operating CompanyCellular panel and method and apparatus for making the same
US6068039 *Apr 14, 1997May 30, 2000Judkins; RenMaterial for venetian type blinds
US6095702 *May 13, 1999Aug 1, 2000Garbacik; Jeremy J.Keyboard dust cover
US6112797 *Feb 9, 1998Sep 5, 2000Hunter Douglas Inc.Apparatus for fabricating a light control window covering
US6142211 *Aug 10, 1999Nov 7, 2000Judkins; RenShade operator with release brake
US6189592Oct 18, 1999Feb 20, 2001Harmonic Design, Inc.Roll up shade doubled fabric having patterns thereon
US6263944Nov 18, 1997Jul 24, 2001Ren JudkinsVenetian type blinds
US6284347Nov 11, 1999Sep 4, 2001Newell Operating CompanyCellular panel and method and apparatus for making the same
US6572725Dec 19, 2001Jun 3, 2003Hunter Douglas Inc.Method for fabricating honeycomb material
US6672361 *Mar 13, 2002Jan 6, 2004Hunter Douglas Industries BvArchitectural covering
US6688369 *Jul 25, 2001Feb 10, 2004Hunter Douglas Inc.Fabric light control window covering
US6823923Mar 20, 2002Nov 30, 2004Hunter Douglas Inc.Light-control window covering and method and apparatus for its manufacture
US6908661Jul 23, 2001Jun 21, 2005Newell Operating CompanyCellular panel and method and apparatus for making the same
US6941996May 21, 2003Sep 13, 2005Springs Window Fashions LpDouble shade with modular end caps and method of assembling same
US7059378Oct 27, 2003Jun 13, 2006Hunter Douglas Inc.Fabric light control window covering
US7513292Dec 14, 2004Apr 7, 2009Hunter Douglas Inc.Cellular coverings for roll-up shades
US7637301Jun 18, 2008Dec 29, 2009Hunter Douglas Inc.Cellular coverings for roll-up shades
US7686060 *Aug 27, 2007Mar 30, 2010Hunter Douglas Inc.Retractable covering for architectural openings having a pair of flexible parallel sheets at least partially integrally connected with vanes
US7708047Jun 18, 2008May 4, 2010Hunter Douglas Inc.Cellular coverings for roll-up shades
US8353326 *May 14, 2010Jan 15, 2013Woongjin Chemical Co., Ltd.Three-dimensional fabric with three-layered structure
US8950462Dec 19, 2011Feb 10, 2015Ki Cheol ChaBlind of united blind by weaving
US20100288449 *May 14, 2010Nov 18, 2010Woongjin Chemical Co., Ltd.Three-dimensional fabric with three-layered structure
DE4133994A1 *Oct 14, 1991Apr 15, 1993Rudolf Dr TuerkVenetian blind with horizontal slots - which is attached to net supported on roller to raise and lower it
DE102010029462A1 *May 28, 2010Dec 1, 2011Schmitz-Werke Gmbh + Co. KgShading device e.g. winter-garden marquise, has translucent strips provided such that shading degree of device is varied by relative movement from lower fabric layer to upper fabric layer
EP0494501A2 *Nov 27, 1991Jul 15, 1992Hunter Douglas International NvRetractable window covering
EP0581489A2 *Jul 14, 1993Feb 2, 1994Hunter Douglas International NvApparatus for mounting a retractable covering for an architectural opening
EP0705957A1Nov 27, 1991Apr 10, 1996Hunter Douglas International NvRetractable window covering
EP2113626A2 *Apr 28, 2009Nov 4, 2009Hunter Douglas Inc.Dual fabric covering for architectural openings
WO1999025946A1Aug 10, 1998May 27, 1999Ren JudkinsRelease brake for roller shades and other window coverings
WO2001011177A1Aug 8, 2000Feb 15, 2001Ren JudkinsShade operator with release brake
Classifications
U.S. Classification160/121.1, 160/178.10R, 160/237, 160/133, 160/85, 454/214, 454/221
International ClassificationE06B9/34, E06B9/28
Cooperative ClassificationE06B9/34
European ClassificationE06B9/34