Patent GB-190627297-A (GB)
Title: Improvements in Self-acting Mules
Inventor: BAIN JOHN M
Filed: 1906-11-30
Granted: 1907-07-18
Abstract: 27,297. Bain, J. M. Nov. 30. Mules.-Relates to automatic mechanism for controlling the speed of the spindles daring winding-on according to the tension of the yarn, and for providing sufficient slack to allow of winding to.the spindle point at the end of each inward run. The spindles C', Fig. 1, are driven as usual from a drum D<6>, which is driven for winding-on from a drum A<6> connected by a chain A7 to a nut A<4> on the quadrant screw A<3>. This screw is geared by bevel-wheels H, H<3>, Fig. 3, with a spindle H<1> on which two grooved pulleys are fixed, and an endless cord H<7> is led round these pulleys and round idle pulleys G<5>, G<4>, G, F, the latter of which is carried by the mule carriage and formed with a ratchet-wheel F', Fig. 2. An arm E pivoted to the carriage is connected by a chain E' to the counterfaller arm D', whereby a leg E<3> on the arm E is normally supported clear of the ratchet-wheel F<4>; but as the yarn tension increases owing to the increasing diameter of the cop, the counterfaller is drawn down, and theleg, E<3> -engages the' ratchet-wheel and locks the pulley F, so that the cord H<7>, which normally turned this pulley as the carriage moved in, is dragged along by the pulley and rotates the quadrant screw to raise the nut A<4>, the speed of the drum A<6> being thus reduced. The leg E<3> is held clear of the ratchetwheel during the outward run by means of a spring- controlled pivoted lever 3, which, at the end of the inward run, is turned by a fixed pin 4, Fig. 1, to raise and engage a notch 2 in the arm E. At the end of the outward run, a pin Q on the .arm is raised by a fixed cam-plate Ql to release the spring- controlled lever 3. To provide the necessary, slack yarn for enabling the yarn to be raised to the spindle point at the end of the inward run, and reducing this amount as the cop is built, a bar K is arranged to bear against the chain E' and slide in a fixed bracket J, the bar being controlled by a pivoted arm J<3> from a pivoted lever J<6>, which is caused to bear against a series of stepped bars L<10> by a spring J<11> The bars L<10> are mounted in a frame L<9> secured to a rack-bar L<3> mounted to slide on a plate L secured to the carriage. The plate L carries bearings for a shaft provided with a pinion M', engaging the rack-bar, and an arm M<3> extending into the path of a pivoted lever P<5> controlled by the copping-mechanism. The usual blocks P, P<1>, Fig. 1, supporting the copping-rail I are connected by a bar P<2> provided with a bracket. P<3> against a pin P<4> on which the end of the pivoted lever P<5> is held by a spring P<8>. As the shaper blocks P, P' are moved along to control the winding faller D', the pin P<7> on the lever P<5> is gradually brought into the path of the arm M<3>, which on the inward run tilts the lever against the spring, but which is itself turned on the outward run and causes the pinion M<1> to move the rack-bar L<3>, so that the lever J<6> falls off the end of the first stepped bar L<10> on to the second one and advances the bar K to deflect the chain, E<2>. This denexion, which is gradually increased as the cop is built, causes the position of the counterfaller D at which the leg E<3> engages the ratchet-wheel F' so as to operate the quadrant nut to be gradually lowered, and the slack yarn left free at the change from winding-on to spinning is thus gradually decreased. A wedge O<1> descends by gravity to prevent return movement of the rackbar L<3>, and an adjustable stop block R on the arm J<3> regulates the deflexion of the chain E'. At the completion of the outward run, the spinning of 'the yarn causes it to contract and draw in the carriage slightly ; the faller and counterfaller wires then coming into action, this contraction tends to depress the counterfaller wire D and engage the leg E<3> with the ratchet-wheel F<4>, producing a reduced spindle speed when not required. This tendency is overcome by the cam-piece Q<1> supporting a pin Q on the arm E to keep the leg E<3> out of action until the contraction is complete.