US2599410A - Window shade attachment - Google Patents

Description

June 3, 1952 J. B. PROBST wmnow SHADE ATTACHMENT 2 Sl-IEETS-SHEET 1 Filed March 31, 1950 1 ENTOR 8. f

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June 3, 1952 B, PROBST 2,599,410

WINDOW SHADE ATTACHMENT Filed March 51, 1950 2 SHEETS-SHEET 2 215 I Zz NVENTOR. BY 6. 6 M

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that in this instance the adhesive strip shown in Figure 6 has been secured to the core.

Figure 8 is a cross sectional view of the replacement shade structure taken on the line 8-8, Figure 7.

Referring again to the drawings and particularly Figures 1 and 4, the shade and roller combination thereinillustrated has been designated generally as H]. The shade proper indicated at H is preferably formed from vinyl plastic, and

the roller indicated at l2 may be of any conventional type. The roller may include end closure caps 13 and pins H for positioning the roller on brackets. The shade has a conventional hem IS. The adhesive strip which is secured independently to both the shade and the roller has been designated l6. I

The invention is best appreciated from a consideration of Figure 4 in which an extended edge portion of the vinyl plastic shade has been given the number [1. As shown, this is secured to an extended edge l8 of the adhesive strip it by a line of adhesive 19. This adhesive is preferably of a type containing a vinyl resin plasticizer and ketone solvents which is particularly eflfective in securing vinyl plastic sheet material to paper although it possesses certain disadvantages including the difliculty of reactivation which would render it ineffective for many adhesive purposes. The roller 12 is secured to the opposite extended" edge 20 of the adhesive strip bya line of adhesive 2| which is preferably an adhesive which is'readily subject to reactivation upon the application of water such as one having a base of animal glue.

It-will be noted that the width of the adhesive strip I6 is substantially equal to the circumference of the roller l2 as shown in Figure 2 so that after the roller and shade have been secured to the strip in the manner illustrated, the portion of the shade which depends below the lower edge of the adhesive strip [6 and which is the portion that is particularly visible when the shade is in extended position in a window opening will be protected from the roller by the adhesive strip and will. not at any time contact directly the outer surfaces of the roller and have imparted to it the imperfections present on suchgsurfaces.

The application of the'invention toa replacement shade assembly is illustrated in Figures -8 in which 23 represents a hollow core on which the shade 22 has been wound. It is acharacteristio of vinyl plastic shades that when sold for replacement, they cannot effectively be wound on'themselves but must be wound on some sort of core as the material lacks sufficient rigidity to be handled conveniently otherwise. 1 Since the coreis disposable, it is preferable to use the cheapest possible construction which will be effective for the purpose. Fibre board cores formed from spirally wound light weight material have been found to be very satisfactory, but when used with a vinyl plastic-shade, the spiral markings will be imparted to the surface unless some means is provided for spacing the shade proper from the core surface. 7

The replacement shade as illustrated embodies the same general construction previously dew,

scribed except that the securance of the adhesive. strip Hi to the roller is preferablyaccomplished' by a spot reactivation of portions only of the adhesive strip 20, these portions being designated as 24, Figure 6. The purpose of this is to facilitate the removal of the replacement shade from the core 23 when it is desired to aflix it to an 4 existing roller. At this time a securance is made along the entire length of the adhesive strip 20 in the same manner as illustrated in Figure 4.

The invention has a particular advantage in its application to shades of the type which are conventionally assembled by the householder. The securance between the shade and the adhesive strip is preferably performed by the manufacturer. The shade with the strip secured thereto may then be wound on a core and sold as a replacement shade or it may be secured to the roller and sold as a complete assembly in instances where the customer desires a roller. The attachment of the strip to the roller is a very simple operation which can be performed by the customer without difl'iculty.

While the invention is particularly directed to shades formed of vinyl plastic material, it also has application to shades formed from similar types of material having a surface which is readily marred by imperfections on the surface of the'roller. Various different types of adhesive may be used in attaching the shade to the strip but the preferred type is one which may be effectively used with synthetic materials such as vinyl plastic and one which is not readily subject to reactivation by the application of water. It is highly preferable that the adhesive used to secure the strip to the roller be readily subject to water reactivation as this attachment will frequently be performed by the customer in his home. I

Having described my invention, I claim:-

1. In combination with a window shade formedfrom vinyl plastic sheet material and a shade roller, means for securing the shade to the roller comprising an adhesive strip formed of paper and having a substantial width dimension, the adhesive strip having a band of water insensitive plasticized adhesive deposited along one longitudinal edge thereof, said band securing the edge of the adhesive strip permanently to the upper transverse edge of the shade with a portion of the adhesive strip extending beyond the upper edge of the shade, the extended portion of the ad-' hesive strip having a secondadhesive band of water sensitive adhesive deposited along its longitudinal edge, said second bandbeing parallel with and spaced from the first band, the spacing of said bands delineatinga relatively narrow flexibleuncoated strip area intervening between the two bands, the second band of adhesive adapted to be reactivated by water and secured adhesively upon the'periphery of the shade roller whereby the upper edge of the shade is spaced from the roller by said relatively flexible uncoated strip area.

I 2. A replacementshade unit adaptedto be adhesively secured upon a shade roller, said shade unit comprising a cylindrical core formed of fibrousmaterial, a shade formed from vinyl plastic sheet material, an adhesive strip for se-' curing the shade to the core, said strip formed of paper and having asubstantial width dimension, the adhesive strip having a band of water insensitive plasticized adhesive deposited along one longitudinal edge thereof, said band securing the edge of 'the adhesive strip permanently to the transverse edge of the shade with a portion of the adhesive strip extending beyond the. upper edge of theshade, the extended portion of the ad-. hesive strip having a secondadh'esive band'of water sensitive adhesive deposited along its, lon-. gitudinal edge, said second band being ,parallel with'andspaced from the first band, the spacing 5 of said bands delineating a relatively narrow REFERENCES CITED flexible uncoated strip area intervening between The following references are of record in the the two bands, the second band of adhesive being file of this patent: separably secured upon the periphery of the core and adapted to be stripped therefrom and being 5 UNITED STATES PATENTS adapted to be reactivated by water and secured Number Name Date adhesively upon the periphery of a shade roller 1,575,844 Jones Mar. 9, 1926 whereby the upper edge of the shade is joined 1,765,145 Gillbee June 17, 193 along a continuous line to the roller by said rela- 1,807,533 Johnson May 26, 1931 tively flexible uncoated strip area. 1 2,064,165 Johnson Dec. 15, 1936 2,069,300 Carlson Feb. 2, 1937 JOHN B. PROBST. 2,147,817 Johnson Feb. 2 1, 1939

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