Patent GB-906193-A (GB)
Title: Improvements relating to control apparatus for textile winding and spinning machines
IPC: B65H54/02
Filed: 1960-01-06
Abstract: 906,193. Winding machines. BARMER MASCHINENFABRIK A.G. Jan. 6, 1960 [Jan. 7, 1959], No. 523/60. Classes 120 (2) and 120 (3). In apparatus for controlling in a winding- machine the operation of engaging, separating, making and release of drum-driven bobbins, a control-member is movable in stages for camsurfaces thereon to act on control means on a carrier for a bobbin-holder or for the drum, either of which is displaced as the package is wound to effect the operations in accordance with the positions of the control member and of the carrier. As applied to apparatus where the drum is fixed and the bobbin holder 7 is carried by a slide or pivoted arm 8, Fig. 1, urged into engagement with a driving-roller 5 by a weight &c. 10, the arm, Fig. 4, carries three control elements which co-operate with the cam-surfaces of the control member: the end 25 of the shaft 24 on which the bobbin is mounted ; a lever 26 on a pin 27 urged against a stop 30 by a spring 28 fixed at one end to the pin and at the other to the arm ; and a lever 31 which when rotated causes a member 33 to operate a brake. The control member is operated against a spring 43 by a pivoted footlever 14, Fig. 5, the control stages being defined by the engagement of a catch 46 pivoted to the lever at 47 with steps 48. In one form, the control member takes the form of a slide 12, Fig. 3, with cam-surfaces 16, 17, moving on a guide 13, Fig. 1, when lowered against a spring 19 by depressing the foot-lever 14. Pivoted to the machine frame near the slide is a doublearmed lever comprising a dog 37 and a curved arm 38. With an empty bobbin in position, the slide is lowered through the first stage, during which only one of the control elements on the arm is operated due to their positions relatively to the corresponding members on or actuated by the slide. Accordingly, projection 17 engages and rotates lever 26 to load spring 28 to turn the arm about its pivot and press the bobbin against the driving-roller to ensure the start of the wind. The slide is now released to return to its datum position, winding having proceeded sufficiently to maintain contact between bobbin and driving-roller. When the wind is completed, arm 8 will have pivoted with the growth of the package to a position where the other two control-elements are within range of actuation by the slide. Slide 12 is now depressed through the first stage ; part 17 operates dog 37 to rotate lever 38 against a spring 40 to engage lever 31, whereby the package is shifted off the driving-roller and member 33 operated to brake rotation of the package. The slide is now moved through the second stage in which projection 16 engages the shaped end 25 of the bobbin-spindle, to free the package from a spring-controlled chuck by which it is held. After the bobbin is changed, the slide is returned to datum for the shaft 24 to return ready for a further operation. The control member may take the form of a wheel 50, Fig. 6, rotatable in stages and having projections 54, 55, 56 co-operating with the control elements on arm 8. At the first stage, projection 54 engages lever 26, projections 55 and 56 being inoperative because lever 31 and shaft-end 25 are positioned as shown in full lines. With further rotation of the wheel, projection 54 moves to 54<SP>11</SP> releasing lever 26. When winding is completed, lever 32, shaft-end 25 and lever 26 move to positions 32<SP>1</SP>, 25<SP>1</SP>, 26<SP>1</SP> on displacement of arm 8 ; as the wheel moves to a third position, projection 55 now at 55<SP>111</SP> operates lever 31<SP>1</SP> and in a fourth position nose 56 now at 56<SP>1111</SP> acts on shaft-end 25<SP>1</SP>. Means such as a projection 34 are arranged on arm 8 or the control member to help define each control stage. Spring 28 automatically returns lever 26 to normal position if the operator omits to zeroize the slide or move the wheel to the next position. Visual indication can be given of the position of the control-member at each stage. The control member 12 can be in two parts, one to effect the first control stage and the other the second.