| 摘要 |
537,382. Delivering thread etc.; clutches. INDUSTRIAL RAYON CORPORATION. Dec. 18, 1939, No. 32458. Convention date, Dec. 27, 1938. [Class 120 (ii)] [Also in Group XXIV] A reel for winding and delivering thread &c. is connected to its supporting means by a device which permits restrained relative rotation between the reel and the supporting means so long as a predetermined torque difference is maintained between them ; slipping between the reel and its driving means is permitted when the predetermined torque difference occurs. As shown the reel comprises sets of bars 35, 36, Fig. 3, carried by members 33, 34 which are mounted on inclined axes disposed in parallel planes so that the turns of the thread on the reel are alternately engaged by the two sets of bars and progressively moved from the supported to the unsupported end of the reel from which the thread is delivered to another reel disposed beneath it. The member 33 is carried by the driving shaft 17 and drives the member 34 which is carried by a flanged member 53 mounted on ball bearings on a supporting member 54 by which the reel is removably secured in the frame of the machine. A diametral bore in the shaft 17, Fig. 7, houses a spring 79 engaging a pair of balls 77 which when driving engage apertures 76 in an hexagonal block 72 secured in the bore of the member 33. When the torque exceeds a predetermined amount the balls are forced into the bore in the shaft and slip occurs between the member 33 and 'the shaft; the block 72 is secured in the member 33 by a snap ring disposed between an inner inclined wall of a circular recess in the member 33 and flats on the corners of the block. In a modification the member 33 is fixed to the shaft 17 and the driving gear 16 is connected to the shaft by a similar clutch disposed in the gear, the balls of the clutch engaging recesses in the flanged ends of a sleeve fixed to the shaft or the gear driving the gear 16 may be similarly connected to the shaft 14 driving the reels of the unit. In another form a collar 98, Fig. 12, fixed to the shaft 17 carries a number of flexible fingers 97 engaging grooves or notches 101 in a block 102 fixed in the reel member 33, the fingers may be carried by the reel member and the grooved or recessed block by the shaft. Specifications 413,414 and 474,973 are referred to. |
