Improvements relating to fancy yarn frames
Реферат: 837,314. Fancy yarn doubling frames. BERLINER MASCHINENBAU AKTIENGESELLSCHAF VORM. L. SCHWARTZKOPFF. Dec. 27, 1956 [June 12, 1956], No. 39273/56. Class 120(2) [Also in Groups XXXV and XXXVII] In a fancy doubling frame, each thread delivery roller is braked or driven in response to a programme repeater unit, the drive being made via one of at least two transmissions in response to magnetic couplings controlled by at least one other programme repeater unit. As shown, Fig. 1, each of two delivery rollers 1, 2 is driven from a shaft 8, either via a chain and sprocket drive 7, 6, giving a 1 : 1 gear ratio or via gears 13, 12, 4 providing a selected gear ratio. Drive at one or other speed is provided when the armature 10 of a double magnetic clutch is engaged with one or other of two clutch members 9, 11. A magnetic brake 14, 15 arrests roller 1 when neither of clutch members 9, 11 is engaged. Electrical programme repeater units 16, 17 and 18, 19 for operating the magnetic clutch and brake are mounted on a shaft 20 driven, through variable-speed gearing, from shaft 8. Each programme repeater unit may consist of a switch operated by a cam disc, the shape of which can be adjusted to provide a desired switching programme. Variation of the speed of a roller will produce an elongated fancy effect, while disengaging and braking of the roller will produce a spot effect. In an alternative programme repeater unit, Fig. 5, a conductor 40 is connected via a slip ring 33 to a rotary brush 30 passing over a ring of contacts 25, selected ones of which are connected via a ring 27 with a second conductor 41, by means of split pins fitting in holes in the ring 27 and contacts 25. Rotation of brush 30 by a shaft 35 thus effects a programme of switching between conductors 40 and 41; this programme can be changed without stopping the machine, by changing the positions of pins 29. Shaft 35 is driven from a shaft 39 through a wheel 37 and friction disc 36; wheel 37 may be shifted to vary the speed ratio of the drive to shaft 35, or it may be moved automatically to modulate the repeater unit. In another, similar, unit, instead of using pins 29 located on the unit, connections are provided to selector switches on a switchboard located outside the machine. In a further construction, Fig. 7, the whole unit is located outside the machine. A sliding contact 61 in the unit is rotated by a ratchet wheel driven step-by-step by the armature 74 of an electromagnet 71 supplied with A.C. pulses produced by a rotor 63 mounted on a shaft 62 driven similarly to shaft 35, Fig. 5. Contact 61 is connected to one conductor 76 and rides over a ring of contacts 57 selectively connected by switches 58 to the second conductor 77. The control units of Figs. 5 and 7 control the magnetic clutches via relays.
Method and device for the manufacture of fancy yarn
Номер патента: EP2831320A2. Автор: Ismet GULLE. Владелец: Gulle Entegre Tekstil Isletmeleri Emlak Danismanligi Sanayi Ve Ticaret AS. Дата публикации: 2015-02-04.