Shade roller operating mechanism

Oet. IS, 1935. c. wheeler 2,017,484

SHADE ROLLER OPERATING MECHANISM

Filed Oct. 2, 1934 2 Sheets-Sheet 1

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Attorney

Oct. 15, 1935.

C. WHEELER

2,017,484

SHADE ROLLER OPERATING MECHANISM

Filed Oct. 2, 1934 2 Sheets-Sheet 2

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Patented Oct. 15, 1935

2,017,484

UNITED STATES PATENT OFFICE

2,017,484 SHADE ROLLER OPERATING MECHANISM Charles Wheeler, Requa, Calif.

Application October 2, 1934, Serial No. 746,606 2 Claims. (Cl. 156—36)

This invention relates to mechanism for operating a shade roller, the general object of the invention being to provide positive means for locking the roller with the shade in adjusted po5 sition and to render it unnecessary to jerk the shade in order to raise the same and also to remove danger of the roller jumping from its supporting brackets if the shade should be suddenly fully wound upon the roller.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in 15 the appended claims.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which: 20 Fig. 1 is a fragmentary front view of a window showing a shade roller equipped with the invention.

Fig. 2 is a fragmentary top plan view of Fig. 1.

Fig. 3 is a section on line 3—3 of Fig. 1.

Fig. 4 is a view of the shaft-carrying end of the roller.

Fig. 5 is a view of the movable part of the clutch.

Fig. 6 is a similar view but taken at right ³θ angles to Fig. 5.

Fig. 7 is an end view of Fig. 5.

Fig. 8 is an elevation looking toward the outer face of the bracket.

Fig. 9 is a view of the lever.

³⁵ Fig. 10 is a section on the line SO—10 of Figure 8.

In these drawings, the numeral I indicates the shade roller which has a pintle at one end for engaging a hole in a bracket 2 while the other ⁴⁰ end has a longitudinally extending bore therein for receiving the spring 3 which has its inner end connected to the roller as shown at 4 with its outer end connected to a shaft 5, as shown at 6, the shaft being rotatably mounted in the ⁴⁵ roller by passing through a ferrule 7' attached to said end of the roller. The outer face of the end of the ferrule is formed with cam teeth 8 and forms a part of a clutch. The shaft extends a considerable distance from said outer face of ⁵⁰ the ferrule and has its outer end flattened and perforated as shown at 9. The shaft extends into a notch IS formed in the outer end of the bracket 11 and a pin 12 passes through the bracket and through the perforation in the flattened 55 part 9 of the shaft so that the shaft is held against rotation and the roller rotates around the shaft.

A disk 13 has the cam teeth 14 for cooperating with teeth 8, the disk 13 forming the movable part of the clutch and said disk has a yoke 15 β attached thereto which passes through the notch 10 of the bracket 11. A spring 16 encircles the shaft and has one end bearing against the disk 13 and the other end against the bracket 11 so that this spring tends to hold the clutch part io 13 in engagement with the clutch part 8. The shaft is grooved as at 17 and the clutch part 13 has a key 18 therein for engagement with the groove so that said clutch part 13 has sliding movement on the shaft but is held against ro- 15 . tary movement.

An L-shaped lever 19 is pivoted between the depending ears 20 on the bracket and has a short arm adapted to engage the bight of the yoke 15 so that when a chain 21, connected to the outer 20 end of the long arm of the lever is pulled, the short arm will force the yoke and the clutch part 13 outwardly so as to release said clutch part 13 from the clutch part 8 and thus the spring 3 turns the roller I to wind or partly wind the shade 25 thereupon. Of course, when the shade has reached the desired height, the chain 21 is released so that the spring 16 will force the clutch part into engagement to stop further turning movement of the roller. When the shade is 30 pulled upon, the clutch part 8 will simply ratchet over the part 13 to permit the unwinding of the shade.

Thus, it will be seen that I have provided simple means for positively holding the shade in 35 adjusted position while permitting the shade to be raised and lowered and eliminating jerking on the shade to release the dog so that the¹ shade can be partly raised. The invention also eliminates danger of the roller freeing itself from the 40 brackets as often happens when the shade is suddenly entirely wound upon the roller.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent. 45

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims. 50