Patent GB-423524-A (GB)
Title: Improvements in and relating to machines for liquid treatment of textile materials, such as hanks or skeins of yarn
IPC: D06B5/20
Filed: 1933-08-09
Abstract: <PICT:0423524/IV/1> <PICT:0423524/IV/2> In machines for the liquid treatment of textile materials such as hanks or skeins of yarn, of the kind comprising a fixed hollow perforated support 13 supplied with dye or other treating liquid, and a rod 26 mounted to rotate about the support 13 so as to lift the material therefrom and change its position relatively thereto, the lifting rod 26 can be caused to rotate intermittently by means of an electric motor, and means are provided for stopping the motor when the rod has reached a certain rest position in the course of its rotation.  An electrically controlled magnetic braking device 72 actuated simultaneously with the stoppage of the electric motor is also provided for stopping the lifting rod 26 in its rest position.  The rod 26 is connected with a sleeve coaxial with the support 13, this sleeve having a spiral gear formed thereof in mesh with a worm gear on a counter-shaft 35, which shaft is driven through the intermediary of gearing 41 from the motor shaft 42 of a motor 43, preferably of the two-phase type, and operated by a magnetic switch 44.  The action of the motor 43 is governed by a control circuit comprising switches 50 and 51 connected in parallel, the switch 51 being periodically opened and closed by a cam 59 continuously rotated by an independent mechanism, the other switch 50 being operated by a rotating cam 65 which is mounted in a housing 68 on a shaft provided with a gear meshing with another gear on the countershaft 35.  When, owing to the rotation of the cam 59, the spring contact 57 of the switch 51 has been allowed to close the circuit therethrough, a magnetic coil 45 acting on the switch 44 is energized, and the motor is started.  Simultaneously, a current flows through the circuit controlling the magnetic brake 72 so that a lever controlling the operation thereof is thrown into the non-braking position, allowing the shaft 42 to rotate.  Continued rotation of the cam 59 causes the switch 51 to open, but meanwhile the rotation of the cam 65 produced by the operation of the motor has closed the switch 50, so that the motor is still energized through the alternative circuit thus completed.  When the cam 65 has arrived at a point in its rotation corresponding to the rest position of the rod 26, this alternative circuit is broken, the motor is stopped, the brake 72 operates, and the shaft 42 is gripped so that the rod 26 is held in its rest position until the continued rotation of the cam 59 restarts the cycle.  When the contactor 55 of a switch controlling the mode of operation of the device is moved to the left away from a contact 54 and against a contact 53, continuous operation of the motor and hence uninterrupted rotation of the rod 26 is produced. The whole circuit is under the control of a switch 81 controlled by a handle 96, the rotation of which simultaneously rotates an actuating rod 94 by which a three-way control valve 95 is operated.  When the switch 81 is in the closed position, a circulating pump 23 thus causes liquid 11 from the tank 10 to be supplied to the interior of the support 13 by way of a pipe 21, but when the switch 81 is open and the motor out of operation, owing to the position of the actuating rod 94, liquid is no longer supplied to the support 13, but is byepassed back to the tank 10.  The ends of the support 13 are provided with flanges 19, which are shaped to retain the skeins or the like in position thereon.  A single additional perforation 100 is provided at the top of the support 13 at each end, so that liquid spreads over the flanges 19 and the occurrence of local untreated areas on the skeins is avoided.