GB463402A - Machine for hackling, spreading and drawing manilla, sisal and like hard fibres - Google Patents

Abstract

463,402. Stop-motions for machines for hackling, spreading, and drawing hard fibres. FAIRBAIRN LAWSON COMBE BARBOUR, Ltd., and ANDERSON, J. K. July 26, 1935, No. 21238. [Class 120 (ii)] In a machine for hackling, spreading, and drawing manilla, sisal, and like hard fibres of the type having stop-motions operating on undue separation of the drawing-rollers 8, 8a, Figs. 1 and 2, or when a predetermined length of material has been treated, and also having manual belt-shifting apparatus which can be operated independently thereof, the stopmotions include a sliding shaft 15 and coupling devices operated by a weight 23, or spring action, and a forked lever 14 which spans the shaft 15 to hold it fixed or may be raised therefrom to allow the operation of the stop-motion. The machine comprises a belt-shifter 2 which may be operated by a number of hand levers 3, 3<a> spaced along shafts 4, 4<a> which are connected by a rod 5 through a coupling member and stud 6. For automatic operation of the stop-motion levers 9, 9<a> mounted upon pivots 9<b> and connected by rods 11, 11<a> to levers 12, 12<a> fixed upon a cross-shaft 13, are provided with a pin 10 on each lever which rests upon the shaft 8<b> of the upper feed or drawing roller 8. The forked lever 14 is carried by the shaft 13 while the shaft 15 is mounted to slide through brackets 16, 16<a> fixed at 18, 18<a> to the machine frame, and through which a shaft 17 carrying the belt fork 2 is also adapted to slide. The shafts 15, 17 are coupled by arms 19, 19<a> and the arm 19<a> is connected to a chain 20 passing over pulleys 21, 22 and weighted at 23. When the roller 8 is lifted the forked lever 14 is raised through the action of the levers 9, 9<a>; 11, 11<a>; 12, 12<a> and the weight 23 moves the shaft 15 to the left, Fig. 4, thus operating the shaft 17 to shift the belt, and simultaneously through the extension 7 of one of the levers 3<a> oscillating the shafts 4, 4<a> to throw over the hand levers 3, 3<a>. A measuring stop-motion may also be provided comprising gearing 30, Fig. 5, from the roller 8<a> so that when a predetermined quantity of material has been passed over the roller 8<a> a pin 31 on the wheel 30<a> engages a lever 33 loose on the stud 34 and depresses the rod 35 thus causing a lever 36 to operate the fork lever 14. On restarting the machine by re-setting the handle 3 the weight 23 is raised and all parts resume their original positions.