GB735036A - Improvements in or relating to textile drawing frames - Google Patents

Abstract

735,036. Drawing frames. S.K.F. KUGELLAGERFABRIKEN GES., [formerly VEREINIGTE KUGELLAGERFABRIKEN GES.]. Sept. 24, 1951 [Sept. 23, 1950], No. 22336/51. Class 120(2). A textile drawing frame comprises a top roller carrier 1 which is capable of being raised out of its operative position by being swung about a bracket 51 between the top roller carrier 1 and the underframe of the drawing frame and has means provided for locating the top roller carrier when in its operative position and when raised out of its operative position, and a spring-pressed lever 67 pivoted in the carrier which determines the setting of a middle pair of top drafting rollers by engagement of the nose 55 with one of the recesses 14 and which is arranged so that when the carrier 1 is raised out of its operative position and when adjustment of the middle pair of rollers is required, a protuberance 64 on the lever can be forced against a stop pin 65 on the bracket whereby the pressure of loading spring 7 on the lever 67 is overcome to withdraw the lever from its roller setting position. With the arrangement shown in Fig. 1, the carrier is maintained in its operative position by the engagement of a sliding locking member 60, which is urged by spring 62, and a tooth 61 on the bracket 51. In the raised inoperative position of the carrier 1 the protuberance 64 on lever 67 engages with a spring 63. The carrier 1 is pivoted to the bracket 51 by a shaft 53 which can be provided with eccentric portions 59 to permit fine adjustment of the carrier 1 relative to the lower rollers. Alternatively this fine adjustment can be achieved by making the bracket 51 adjustable on its support bar 2, e.g., with the arrangement shown in Fig. 4 the bar 2 has a flat side 91 against which two screws 80 are made to bear to press the bar against the bracket 51. In another embodiment packing pieces are used to achieve this adjustment. Alternative means for the locking of the carrier 1 are shown in Fig. 5 which consist of a U-shaped pawl 68 hinged on a pin 73 so that it straddles the carrier. Instead of pin 73 a curved part of the carrier may be used as hinge and a leaf type spring used to press the pawl against this curved part. A screw may be provided in the central portion of the pawl 68 to bear against a depression in the carrier 1 so as to provide a fine adjustment for the pawl. Also in the embodiment shown in Fig. 5 the carrier is maintained in its raised position by a spring 75 fastened to the rear end of the carrier so as to engage a stepped portion 76. In moving the carrier the spring 75 bears against the curved surface 79 and produces a frictional drag which prevents the carrier from slamming down once it has been released from the step 76.