US1872188A - Shade roller - Google Patents

Description

Aug. 16, 1932. B, S H T 1,872,188

SHADE ROLLER Filed May 25, 1932 INVENTOR Benm'gchwar/z ATTORNEY Patented Aug. 16, 1932 UNITED AT PATENT OFFICE IBENNIE SCHWARTZ, on BROOKLYN, NEW Yon]:

SHADE Application filed. May 25,

The invention is a shade roller in which means is provided for preventing the comshade roller in which means is provided for J preventing the spring unwinding beyond the point at which it has suflicient the shade.

Another object of the invention isto provide in, a shade roller means for limiting the rotating movement oi' the spring core when the spring is unwinding. i

Another object of the inventionris'to provide a shade roller in whichthe roller may tension to roll only rotate to roll up the shade exactly the same number of turns ithas rotated to roll the shade down.

Another object of the invention is to provide a travelling member in a shade roller which will engage a stop to prevent the spring core and roller unwinding beyond a predetermined distance. V p g Arfurther object of the invention isto provide a device that may be installed upon the interior of ashade roller for preventing the roller completely unwinding whichmay be tcll d' ai-t e f hade oller ortina ms 1 e 1m 1y yp 0 S r one end in which the spring 2 is mounted spring roller that maybe used for any other purpose. I p I And a still further object'of the invention is to provide means for limiting the movement of a shade roller to prevent the complete unwindingof thespring which is of a simple and economical construction.

I threaded'rodinside of .the spring and a nut on the threaded rod with means for preventing the nut rotating with the rod, and means at the ends for limiting the travel of the nut on the rod.

Other features and advantages ot-the invention will appear from the following de scription taken in connection with the draw- 'ing, wherein mg the core of the spring.

"the spring is'held' in a slot oropening- ROLLER 1932. Serial No. 613,386.

a Figure 1' is a view showing a-shade roller with-the device incorporated therein.

Figure 2 is a View showing a portion of a shade roller with part broken away showing the spring.

Figure 3 is a cross section thru the spring with the rolleromittedy taken on line 3-3 of 'Figure 2'. A i

Figure 4 is a longitudinal section thru the end of the roller with the wood portion of the do roller indicated in dotted lines. Figure 5 is'an end View of the roller. Figure6 is a section similar to that shown in Figure 3 in which a nut of an alternate, design is shown; V Figure 7 is a similar section showing a1- te'rnate meansffor preventing the nut rotat ing:

Inthedrawing the device is shown as it would be made wherein numeral"l indicates o a shade roller, numeral 2 a shade roller spring, and numeral 3 a threaded rod form- It will be understood that a shade roller of any type or design may be used and the 7 roller may be made of wood, metal, or of "any material. The-spring roller'may also 1 beused for window shades, awningsyblinds, curtains',"or for any other purpose. In the f design shown the roller is made of wood and go is provided with a cylindrical opening 4 in shaped disc 5 and it will be noted that one end'ofthe springQ. is attached to a projec- 35 tion 6 on the disc 5 and theopposite end of 7 in the rod 8. It will be understood that the spring may also be held to the end of the rod 3'by any other means. The disc 5 may 'be' attached to the end of'the roller 1 by points 8, or held thereto by any other means. It will be notedthat the usual flat shank or pintle, as indicated by the numeral 9,'is provided at the end of the rod 8 and this may be made integral with the rod or attached to it in any manner. With the shank 9 held in a socket at the edge of a window frame Ward it will wind the spring so that when the shade is released the spring will draw the shade upward. The shade may be held at any'position by the usual dogs 11 operating in recesses 12 in a disc 13 at the end of the shank 9.

In an ordinary window shade the rod 3is not threadedand when the shade 10 is re leased it is free to run up to the top of the window and very often the spring continues to unwind so that the tension onthe spring is released and the spring is not sufficient to raise the shade all the way to the top ofthe window. In order to prevent this the rod 3 is threaded and a threaded nut14 placed on the rod and held'in asleeve 15 so that when the shade is pulled downward thenut 14 will travel on the rod 3 andwhen the shade is released and raised the nut.14 willtravel back to the starting position. VVhen'installing the deviceit is so arranged that the nut 14may rest against the end of a bearing 16 at one end of the rod 3, or with opposite hand threads the nut 14 may rest against an end of a bearing 17 at the opposite end of the sleeve. NVit-h the nut in this position and the spring slightly wound or wound sufficiently to produce tension'to raise the sion, the shade may be drawn downward and as it is drawn downward the nut14-will travel on the threads on the rod 3 away-from the bearing, the end of which forms the stop, and when the shade is raised'the nut 'will' travel back the same distance it moved when the shade was I drawn downward, thereby permitting the rod 3 to make exact ly the same number of turnsas the shade is raised, that it made in the opposite direction, when the shade was lowered, and as the nut will strike the end of a bearing it will prevent the rod turning further, or the roller running free, or the shadecontinuing rto rotate on the roller after it has reached the top. It will be noted that whenever the shade is released it can only unwind until the end of the nut engages one of the limiting steps or ends of the bearings which will therefore make it possible to maintain-the adjusted tension in the spring atall times and also make it impossible for the spring to completely unwind. The roller will otherwise operate in a manner similar to that of the ordinary shade roller.

It will be understood that thenut 14 may" be of any shape or design and the sleeve 15 may also be of any shape so that it will correspond with the nut and prevent the nut rotating as it travels on the rod 3. In the design shown in Figure 6 the nut, which is indicated by the numeral 18, and also the sleeve, which is indicated by thenumeral 19, .are both made of an elliptical shape, however, it is understood that they maybe. made of anyother shape. tIngthe design shown .the disc. tral ,part of the disc 5 is stamped mward :ner desired and-these may be held in the disc 5, as shown at the points 23, in Figure 4. *It'will be understood, however, that this sleeve may be held to the disc in any other manner 'or may be attached to the roller in any manner as long as it-is stationary with It will also be noted thatthe cenforming the bearing 16 to hold the end of the .rod- 3 and it will be understood that this hearing may also be formed in any other manner,

and at the opposite end of the rod where the rod is held in the bearing 17 of the sleeve 15 the rod is turned downward to'the root of l the threads thereby providing a smooth bearing, however it will be understood that this bearing may be formed in any other manner,

. and also that the hearing may be omitted. shade, which is known as the adjustedten- It will be .understood that other changes may be made in the construction without departing from the spirit of the invention. One of which changes may be in the use of any other means for mounting and holding the nut 14 or the travelling member in a shade roller, another may be in the use of other means for causing a nut or; travelling member to move as theshade is pulled downward or as it is pulled upward, and still another chan e may be in the use of other means for limiting the movement of the said travelling member.

The construction will be readily understood from the foregoing description. In use the-device may be provided as shown and installedcinv a shade, or other spring roller of any type or description and it will be noted that the shade may be pulled downward in the usual manner without any interference whatever from the travelling'member 14, and also that .the shade may be raised by the spring-and as long as it operates in the same manner as the spring rollers now in use, this device will not interfere with the operation, however, when a shade is unintentionally released this device will come into action and prevent the spring unwinding beyond the adjusted tension, thereby eliminating the trouble and inconvenience of taking down the spring roller and-rewinding the spring, and

1. In a shade roller, a spring, and a travelling member within said spring, and means limiting the movement of the travelling member to prevent complete unwinding of said spring.

2. In a shade roller, a spring, a threaded core in said spring, a nut on said threaded core, means causing the nut to rotate on the core, said nut and means causing the rotation thereof, positioned within said spring, and means limiting the movement of said nut to prevent complete unwinding of said spring.

3. In an attachment for shade rollers, a spring for winding said roller, and means within said spring preventing complete unwinding of said spring.

4. In an attachment for shade rollers, a spring adapted to be inserted in the end of the roller, a threaded core in said spring, a travelling member on said threaded core and within said spring, and rotatable means holding said travelling member causing its rotation on said core. I

5. In an attachment for shade rollers, a spring adapted to be inserted in the endof the roller for rewinding the roller, and a travelling member inside of said spring to prevent complete unwinding thereof.

6. In an attachment for shade rollers, a

spring for rewinding said roller, a travelling member inside of said spring, means causing said travelling member to move in one direction as a shade on the roller is drawn downward, and means preventing said travelling member moving beyond the starting point when the shade moves upward or travels in the opposite direction.

In testimony whereof I afiix my signature.

BENNIE SCHWARTZ.

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