GB881669A - Spindle driving and clutching means for spinning and twisting spindles - Google Patents

Abstract

881,669. Driving and braking spindles. BURKHARDT, O. W. Nov. 20, 1959 [Nov. 29, 1958], No. 39395/59. Class 120(2) [Also in Group XXIV] In a spinning or twisting spindle 1 driven, via a clutch incorporating a slidable sleeve 13, 14, by a spindle sleeve 7 which surrounds the spindle, the clutch sleeve, which is operated by one or more electromagnets 20 in the spindle housing, is slidable on the spindle and couples the driving sleeve to the spindle in its one end position and effects braking of the spindle in its other end position. In Figs. 1 and 2 the clutch comprises a ring 11 in the sleeve 7 which is driven by a worm-wheel 10 and the clutch sleeve 13, 14 sliding on an octagonal section 12 of the spindle. The clutch sleeve consists of an inner brass member 13 and a steel sleeve 14 having teeth 18, 19 engaging clutch shoes 16 and 17 which are outwardly urged by springs (not shown). Braking of the spindle is effected by energizing the electromagnet 20 which causes the sleeve 13, 14 to slide upwards into frictional contact with a steel ring 15 fixed in a spindle housing 2. At the same time the teeth 18, 19 arrest the shoes 16 and 17 which then slide over a wear-resisting lining of the ring 11, so decoupling the spindle drive. When the magnet is again de-energized, the shoes 16, 17 are no longer arrested and again, under the influence of the spring force and centrifugal force form a driving connection between the spindle and its driving sleeve 7. In a further form (Fig. 4, not shown) another electromagnet is provided in the spindle housing which, when energized, brings the sleeve 13, 14 downwards into contact with a ring fixed to the sleeve 7 so providing frictional coupling between the driving sleeve 7 and the spindle 1; use of a changeover switch in the electromagnet circuit ensures that both electromagnets cannot be simultaneously switched on.