US1765170A - Shade-roller stop - Google Patents

Description

June 17,1930. I-BQEHMESLER 1 7 SHADE ROLLER STOP Filed July 12, 1929 INVENTOR Patented June 17, 1930 BEBTRAM ivrns nn, or enooxrsm, new onK SHADE-ROLLER STOP Application filed July 12,

This invention relates to improvements in shade roller stops. j

The primary object of the invention resides in an automatic shade roller stop for stopping the upward winding movement of .a shade upon its roller to prevent the free end of the shade from idly spinning about the roller, which causes accidental unwinding ofthe shade roller spring resulting in its loss of tension. 7

Another object of the invention is to provide shade roller stop which may be applied to shade rollers now in use without altering the construction, of the shade roller, s and which may be set at the time of its attachment to stop the winding of the shade at a predetermined point.

A further object of the invention is the. {provision of a shade roller stop for attach- {ment to one end of a shade roller and with which the shade roller supporting bracket coacts to effect stopping of the Winding m e of t e r ler- With these and other objects in View, the

invention resides in certain novel construction and combination arrangement of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claims, and are illustrated in theaccompanyingdrawing,-in which i j l i Figure 1 is a perspective view of a shade "r l 'provided Withmy impr v s op and shown mounte upon a window Figure 2 is an enlarged vertical longitudinal sectional View throughone end of the shade roller showing the parts in position when the shade is lowered. V 1 Y Figure Bis-a view similar to Figure 2 but showing the position of the parts when the had a th 11 at i s W n g; Figure tis a-vertical-transverse sectional iew on the line .ot Figure 2.

Figure 5 is a collective perspective view of the several parts constituting tiQ lw Referring to the drawing by reference characters, the numeral LO designates a shade roller having a flexible shade 11 windable thereon, while the free edge 12 carries my invenv 1929. Serial No. 377,811.

the usual reinforcing strip from which a pull cord 18 depends. The roller is hollow .for the purpose of housing a helical spring 14 which when wound up, places the roller under tension for winding the shade from a lowered position to a raised position. The usual ratchet mechanism (not shown) is provided for locking the shade in a lowered position against winding, but it is not believed necessary to go into a specific explanation regarding the same as this feature is present on the types of shade rollers now in common use. A flat trunnion 15 extends from one end of the roller 10 and fits into a supporting bracket 16 fixedly secured to one of the sides of the window casing 17. Although I have only mentioned the means of supportting one end of the shade roller upon the window casing, it will be appreciated that the opposite end is supported in the usual manner.

Fi *ed to the shade roller 10 adjacent the end supported in the bracket 16, is a collar 18, the inner walls of which are provided with longitudinal keys 19 for embedment in the wooden roller 10, while tacks '20 pass through the collar 18 into the roller for rigidly connecting the collar therewith. Diametrically opposed lugs 21 extend from the exterior of the collar into an elongated slot 22 provided in opposed ears 23 extending from a sleeve member 2.4a" The interior wallsof the sleeve member are screwthreaded as at 25 for threaded engagement with the exterior threads 26 provided on a screw w cap 27. The end wall of the cap 2? is provided with an elongated slot 28 through i'which the fiat trunnion 15 extends'in order that the cap member fits over the end of the roller,'as clearly shown in Figures 2 and 3 of the drawing. It will be seen that both the'collar 18'and the-screw cap 27 rotates with the roller 10 which imparts a longitudinal sliding movement to the sleeve 24, although the sleeve 24 also turns but simultaneously slides in a "longitudinal di- 7 rection.

Assuming that theshade 11' isin lowered positionat which time the'parts are as shown in Figure 2 of the drawing. wherein the outer accidental jumping of the shade roller from its bearings as the action of the spring tends to am the opposlte ends of the roller against the respective brackets. It will, of course 7 be understood, that the attachment may be set to bring the roller to a stop just prior to the full windingof theshade thereon and which is accomplished by adjusting the screw cap 27 relative to the sleeve 24 before attachment'of the parts to the shade roller.

From the foregoing description, it will be seen that I have provided a shade roller attachment which. may be installed upon shade rollers now in use without altering the construction thereof and which automatically stops the winding of a shade at a predetermined point during its winding movement which prevents spinning of the free edge of the shade when fully Wound. The invention also eliminates the necessity of rewinding the roller spring nowvcaused by accidental spinning of the shade upon the roller. v

The screwcap 27 in addition to forming the above functions also serves to. protect the end of the shade roller against rust as the same fits over that end of the roller containing the ratchet mechanism usually present in spring actuated shade rollers.- In some instances, rust accumulates upon the working parts of the ratchet and renders them inoperative. Thecap therefore serves. t overcome this defect.

While I have described what I deem to be the most desirable embodiment of my in vention, it is obvious that manyof the details may be varied without in any way departing from the spirit of my invention, and I therefore do not limit myself to the exact details of construction herein set forthnor to anything less than the whole of my invention limited only by the appended claims.

What is claimed as new is l 1. In combination witha shade roller and itssupport including a supporting bracket,

astop membermovable by turning move? ments of the roller relative to said bracket "and moving toward said bracket on turning the roller in one direction and away'from said bracket on turning the roller in the, op-

posite direction, and means carried by-said roller and correlated with said stop;member for actuating the same upon rotations thereof in both said directions.

2. In combination with a shade roller and its support including a supporting bracket, a collar fixed to said roller, a threaded member fixed to said roller, a sleeve member fitting over said threaded member and being internally screw threaded for. co-acting en- 'gagement with said threaded member, and

to turn therewith, an internally threaded sleeve threadedly connected to said threaded member, there being a key-way carried by said sleeve, and 'co-acting meansincluding said fixture and key-way operatively connecting said collar with said threaded sleeve for causing the sameto simultaneously turn and for permitting longitudinal movement of said sleeve by said exteriorly threaded member.

4. A stop attachment for shade rollers comprising a structure adapted to be fixedly connected to a shade roller adjacent one end thereof, an exteriorly 1 threaded member adapted to fit over the end of a shade roller to turn therewith, an internally threaded sleeve threadedly connected to said threaded sleeve for causingthe same to simultaneous .ly turn and for permitting longitudinal movementrof said sleeve by said exteriorly threaded member, said means including an elongated slot provided in said threaded sleeve.

r 5. Ina shade roller having a fiat projecting trunnion at one endthe'reof, a threaded cap member provided with a slot in its end wall for thepassage of saidflat trunnion, said cap member'fittin'g over the end of said roller, a collar fixed to said roller inwardly of said cap member, a sleeve' member internally screw threaded forco-actingengage ment with exterior threads provided on said cap member, and lugs extending from said 7 collar into elongated slots provided in said sleeve member, substantially as and for the purpose specified.

In testimony whereof I have affix'edfmy signature. I 7 7' BERTRAM.

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