US1562105A - Window-shade roller - Google Patents

Description

Nov. 17, 1925. 1,562,105

c. E. MCDONALD T WINDOW SHADE ROLLER Filed May 31, 1924 QZJIcwnaZd Patented Nev. 17, 1925.

CHARLES E. MCDONALD, OF BUTTE, MONTANA.

- WINDOW-SHADE ROLLER.

Application filed May 31, 1924. Serial No. 717,030.

To aZZ whom it may concern: 1

Be it known that I, CHARLES E. McDon- ALD, a citizen of the United States, residing at Butte in the county of Silver Bow and State of Montana, have invent-ed certain new and useful Improvements in a'lVindow- Shade Roller, of which the following is a specification.

This invention relates to a-window shade roller, and particularly to means for attaching thereto one end of a window shade to secure a Him but detachable connection therewith, and also for providing cooperating means for mounting the winding spring for such a roller. 1

In this class of devices in order to secure a firm attachment of the shade to the roller it has been necessary to use driven fastening means which involveconsiderable labor and care in properly aligning and securing the shade to effect its straight winding upon the roller and for securing the shade against disconnection when completely unwound at which time the strain extends radially to the axis of the roller. This is particularly important in connection with'metal shade roll ers to which the attachment must be made by means of a retaining strip or plate and in such manner that the tension on the shade will not displace the retaining means.

In prior constructions it has also been found diflicult to secure a proper mounting for the winding spindle and its cooperating spring, particularly for the support of one end of such spring upon a fixed part.

The present invention therefore seeks to provide an improved construction of shade roller provided with a longitudinal groove having seats at its opposite sides and a retaining member disposed in said groove to engage said seats and also resiliently bear upon the inner wall of the groove so that the tension of the shade when completely unwound tends to increase the grip of the retaining member thereon and eflectually prevent disconnection.

A. further object of the invention is to provide an improved construction of resilient retaining plate adapted to be disposed in a groove of the shade roller and provided intermediate its edges with a bearing surface to engage the inner wall of the said groove.

Another object of the invention is to pro vide a novel construction of supporting means for the winding spindle adapted for cooperation w th a shade roller "provided with a longitudinal groove the inner wall of Which is substantially fiat,'and comprises a bearing plate held against rotation byengage'ment with such wall and adapted to receive one end of the tension spring, the opposite end of which is connected to the spindle.

Other objects and advantagesof the in vention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawing:

Figure 1 is a longitudinal section of the shade roller the parts in elevation and broken away;

Figure 2 is a section on the line 2-2 of v Figure 1; 1

Figure 3 is a similar view on the line 83 of Figure 1;

Figure 4 is a Figure 1;

Figure 5 is an enlarged cross section showing the position of the shade when completely unwound; 1

Figure 6 is a detail perspective of the res taining plate; and

'75 like view on the line 44 of Figure 7 is .amodified form of the invention adapted for a wooden roller.

Like reference numerals refer to throughout the several ing.

figures of the draw: In the preferred form of the invention the roller isformed tubular and of substan,-.

tially circular form. It comprises the body like arts 10 which is formed with a telescoping section 11 providing for the adjustment in length of the roller to fit the windows, of different widths. These sections .of the body are each provided upon their circumference with a grooved portion-12 which is formed at one side with a holding seat 13 for a retaining plate 14 and at the opposite side I with an elongated lip or tongue 15, which provides a recess into which the shade. or

curtain 16 is introduced. The inner wall 17 of the groove 12 ;extends substantially chordal to the cireumference'of the roller and providesa bearing surface cooperating with the retaining plate 14: as hereinafter described. o I

' This plate is formed at'one edge with a flange 18 adapted to seat against the shoulder or seat 13 and the opposite edgefof the plate comprises a gripping edge 19- to en'- gage the shade which may be serrated-if de sired to secure additional engagement there. I

with. Intermediate the edges 18 and 19 the plate is formed with a curved bearing surface 20 which as shown in'Figure5 con tacts against the inner wall 17 of the groove while the oppositely curved face 21 of the plate forms a substantially continuous curved surface for the roller. As shown in Figure 6 this plate may be formed upon a compound curve and may either extend for the longitudinal length of the roller or be formed in separate sections applied for the attachment of ashade.

A modified form of the invention is shown in Figure 7 where the holding function is substantially the same and in this modification the roller 22 is formed of wood and provided with a groove uponits periphery having opposite dove-tailed faces 23 and 24adapted to receive and retain a strip 25 of resilient wood or similar material introduced longitudinally of the roller. This strip 25 is provided intermediate its side edges with a groove 26 adapted to seat upon a rib 27 carried by the inner face of the groove within the roller. The groove and rib cooperate to place a lateral tension upon the strip 25 causing the opposite ends thereof to tightly grip, the dove-tailed seats and also forming a point of contact between the strip and the inner wall of the groove by which a supplemental holding of the shade 28 is secured as shown in Figure '7. In this illustration the shade is gripped at the seat 23 and also between the rib and groove at the inner wall of the recess. As a result, the tension upon the shade when completely unwound causes additional tension to be applied at all the holding points as indicated by dotted lines in Figure '7 as thestrain upon the strip 25 causes the same to more tightly engage the seat 23 and also the rib 27 of the roller.

The construction of roller above described is also adapted to cooperate with a novel form of mounting for the spring winding tension and this structure comprises a bearing plate 30 having a circularflange 31 engaging the inner periphery of the body 10 and having one segment of its outer edge removed, as indicated at 82 in Figures 3 and 4-; so as to seat upon; the inner wall 1'? of the groove 12extending longitudinally the roller. This retains the plate against any rotative movement and forms a firm support for the attachment of the winding spring 33 as shown in Figure 1. This spring may be attached to the plate in any preferred manner, for instance by means of a lug 34: bent outwardly therefrom, and the plate is further formed with a central bearing 35 to receive the inner end of the winding spindle or shaft 36 which is held against displacement byja suitable collar 37- secured thereon.

The opposite end of the spindle 36 is prothe opposite pivot 42 of the roller is rota- V tably. mounted in the cap plate 43 by means of a bearing portion 4A and the flange/l5 of this cap extends within the telescoping section 11 of the roller. This cap is frictionally held in position by projections and seats 46. similar to those shown at 40 upon the opposite end of the roller.

In the construction shown in Figures 1 to .6 it will be seen that the construction of the attaching groove and the retaining plate provides for a plurality of gripping surfaces to engage the shade or curtain attached to the roller while the outer portion; of this -.plate forms a substantially continuous circular face for said roller to secure an even winding ofthe shade thereon.

Referring to Figure 5 it will be seen that the shade is normally gripped and retained by contact of the plate with the end of the lip at one side of the groove while the inner end of the plate also retains the shade in contact with the inner face of this lip while the portion of the shade near its free end is further held by contact of the plate with the inner wall of the groove. This elfectually prevents any danger of disconnection if strain is placed upon the shade when completely unwound as such strain when. applied is transmitted to the retaining plate causing it to engage more firmly the free edge of the lip and also the inner face there of as well as the inner wall of the groove. The plate being of resilient character in creases its gripping tension at the several points under such strain.

This form of retaining plate is adapted to be inserted laterally into the groove with the shade folded thereover and retained by engagement with the holding shoulder thereof so that the strain upon the plate increases the contact with this shoulder and prevents the plate from being sprung or accidentally withdrawn from the groove of the roller. 2 The inner face of this groove also cooperates with the pivoting platefor the winding spindle to prevent rotationthereof so that the invention not only presents an improved form of attaching means but also of a mounting for the winding spring and its spindle. i

The construction of the telescoping roller permits longitudinal adjustment thereof to.

properly fit different widths of windows or previously attached brackets, while the frictionally retained caps permit ready access to the interior of the roller when it is necessary to withdraw or repair the spring as these several parts can be withdrawn as a unit since the bearing plate is carried by the inner end of the spring spindle. It will be obvious that such a construction is also applicable to other forms of roller than that specifically before described.

While the specific construction of theattaching means and spring mounting have been shown and described, the invention is not confined thereto as changes and alterations may be made without departing from the spirit of the invention as defined by the following claims.

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

1. A shade roller provided with a l0ngitudinal groove having a seat at one side and a projection at its opposite side, and a resilient retaining member disposed in said groove to abut said seat and having a free portion transversely movable to engage the inner walls of the groove and the PIOJeCtlOD at opposite polnts.

2. A shade roller provided with a 1011- gitudinal groove having a seat at one side and a lip at the opposite side, and a resilient retaining plate engaging said seat and having a free edge within said lip and a bearing surface intermediate its edges to engage the inner wall of the groove upon tension applied to said free edge.

3. A shade roller provided with a longitudinal groove having a holding seat at one side and an opposite elongated lip, and a metal retaining plate formed at one edge with a face to'engage said holding seat and having its opposite outwardly bent face edge adapted to contact with the inner face of said lip.

4:. A shade roller provided with a longitudinal groove having a holding seat at one side and an opposite elongated lip, and a resilient retaining plate formed at one edge with a face to engage said holding seat and at its opposite edge with an outwardly bent free edge adapted to contact I opposite free edge disposed outwardly to engage the inner face of said lip and an intermediate face disposed to engage the projected edge of said lip.

In testimony whereof I affix my signature.

CHARLES E. MCDONALD.

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