Patent GB-421948-A (GB)
Title: Improvements relating to warp sizing machines
IPC: D06B3/04
Filed: 1934-06-19
Abstract: 421,948. Warping yarns. JOHNSON, C. B., 382, 17th Avenue, Paterson, New Jersey, U.S.A. June 19, 1934, No. 18102. Convention date, July 22, 1933. [Class 142 (iv)] In a warp-sizing machine the entire rotary driven system, including the take-up or rewind means, rotary heated drying drums or ' cans ' and an element geared with the take-up and cans, is adapted to be driven from a constantly-rotating driving element through either a low-speed over-running clutch or a high-speed clutch, and is combined with means to engage or disengage the high-speed clutch. The machine can be changed from high to low speed when inspection or repairs are necessary, and no relaxation in the tension of the warp is allowed. The machine comprises a quetch A from which the warp receives sizing liquid, rotary heated intergeared cans B, a series of guide-bars D, and a rewind means C. The quetch and cans may be constructed as described in Specification 247,427, [Class 140]. The rewind means comprises a beam 2, on which the warp is wound, supported on a spindle 3<a> and a driven spindle 3 in the frame 1, and a pulleylike element secured to the spindle 3 has flanges faced with friction material. An impeller comprising a gear-wheel 7 mounted on roller bearings on the pulley-like element is also provided with flanges adapted to cooperate with the flanges on the latter, and freely rotatable on the spindle 3 on both sides of the pulley-like element are discs 8, the inner one being interlocked to rotate with one of the flanges of the impeller. The discs and flanges are pressed together, so that the impeller can drive the beam 2, by a member 10 slidable on the spindle 3 and pressed by a lever, which is in turn pressed by a lever carrying adjustable weights. The warp passes between two rollers 16, freely mounted in slotted bearings, and a roller 14 before being rewound. The roller 14 carries a gear-wheel 17 meshing with the gear-wheel 7 of the impeller, and the gear-wheel 17 meshes with a pinion 21 on a shaft 20, Fig. 7, carried by cross rails 18 on the frame 1. The cans B are driven through bevel and spur gearing 23, 24 and a shaft 22 from the shaft 20, but at a lower peripheral speed than the rewind means so that the warp is tensioned. A shaft 29 parallel to the shaft 20 is driven from an electric motor 25, through a variable-speed transmission means 27, and drives the shaft 20 through either of two clutches 30, 31. The low-speed clutch 30 is an over-running ball clutch one member of which has a gear-wheel 32 secured thereto and in mesh with a pinion on the shaft 29. The clutch 31 is a high-speed clutch comprising a freely mounted member 31<a>, to which is affixed a pinion 34 in mesh with a gear-wheel on the shaft 29, a member 31b keyed to the shaft 20, and a sleeve 31<c> adapted to be slid along the member 31b to expand a split-ring into gripping engagement with the member 31<a>, so that the shaft 20 will be driven by the member 31<a>. The sleeve 31<c> is moved by a lever 36 pivoted at one end and secured at the other to a shaft 37 which is slidable longitudinally by a handlever 39 into any of three positions a, b, c determined by a spring-pressed pawl 40 adapted to engage with any of three notches in the shaft. In position a a projection 42 on the shaft cuts out the switch 44 of the motor 25 to stop the machine. For effecting the change from high to low speed the shaft 37 is moved from position c to position b, the highspeed clutch 31 being thrown out of engagement and the low-speed clutch 30 automatically picking up the shaft 20 so that the tension in the warp is not affected. In a modification, where it is necessary to reverse the rotation of the entire rotary driven system, the shaft 37 is adapted to be moved further to the left than the stop position a, and the sleeve 31<c> is adapted to depress pins slidable in the clutch member 30b, so that they force a metal ring against a friction ring fixed inside the latter ; this engagement interlocks the clutch members for reverse rotation.