Patent GB-190603147-A (GB)
Title: Apparatus for Measuring, Severing and Piling Lengths of Cloth or other Material.
Inventor: BARNES WILLIAM
Filed: 1906-02-08
Granted: 1906-06-28
Abstract: 3147. Barnes, W. Feb. 8. Cutting-machines for fabrics. - Relates to the production, on a fixed table 1, Fig. 1, of a pile of separate pieces of cloth &c. of uniform lengths, by successive folding and severing operations. A framework 3, vertically movable in guides, is attached to the upper ends of toggle -links 4 attached to a coupling - rod 7, the longitudinal movement of which straightens the links or bends them towards the right or left, to raise or lower the framework 3. The whole sequence of operations takes place once in every to-and-fro motion of a carriage 14. This carriage traverses rails 13 carried by the framework, and stop-bars 33, 34, the latter of which is adjustable, limit the movement. The fabric passes over rollers 23, 22 and under one or other set of pressing-rollers 20, 26, 21, 27. The rollers 26, 27 are attached to arms pivoted to levers 30, which are also pivoted to arms 18. The latter are hinged to arms 17, and are coupled by means of triangular links 19, which carry the rollers 20, 21, 22. The knife barrel 42, Figs. 1 and 4, extends traversely of the carriage 14, and is traversed longitudinally on the rails 13, so as to pass successively under the parts 43, 18, 20, 21 and other parts 18, 43, until it engages jaw-bars attached to the bracket 50, which is integral with the stop-bar 34. During the passage of the knife-barrel under the rollers 20, 21, a fold is formed in the fabric and carried to the end of the travel. The knife 52 is then operated, and is guided along a slot 53 extending lengthways of the barrel, the motion of the barrel and knife being obtained from two pairs of cords which are attached to and wound round drums 64. The cords pass round suitable pulleys, and by the alternate rotation of the drum 64, in opposite directions, through the medium of fast and loose pulleys and bevel-gearing, the to-and-fro motions of the barrel and knife are effected. Spring-pressed bow-shaped gates which prevent the motion of the knife when closed are pivoted on the knife-barrel at each end, and are opened at the end of the traverse of the barrel by means of stops on plates which clamp the fabric. At the end of its stroke, the knife actuates a trigger, freeing the barrel and allowing the latter to be revolved until the slot 53 faces in the reverse direction. The knife has two blades 52<a>, 52<b> adjustably attached to a stock-plate, which is fixed to a cylindrical casing sliding within the barrel. The trigger levers are coupled by wire rods to cam levers, and they operate hinged frames to disengage from the fabric that jaw-bar which holds the severed margins. The jaw-bar, by means of a cord, operates a lever 104, which actuates a bar 101 sliding in sockets and moving a belt fork 100 to reverse the direction of rotation of the shaft 65. As the frame 3 moves upwards by the straightening of the links 4, a cord which passes under a rod 86 is tightened and pulls the jaw-bar into position again. The movement of the frame is obtained by means of the pull of cords on the coupling-lever 7 during a short period succeeding the reversal of the barrel, the latter being prevented from moving until the frame again descends by the pull of the cords on the coupling-bar and frees the barrel from a pivoted hook. A hand-crank 108, attached to one of the cords, may be turned for transfering the belt to the loose pulley and stopping the machine when required. The frame 3 carries a tumbler lever, which, as the frame rises, operates a pawl to drive a registering ratchet-wheel, the completion of the task being notified by an alarum bell operated by a clapper attached to the pawl, which sinks into a cutaway portion of the ratchetwheel. Attached also to the pawl through the medium of links is a hinged stop-piece, which, when operated, only allows the jaw - bar to fall back one-half of the distance required for the reversal of the driving-mechanism, and the belt is shifted to the centre pulley. The cloth-roller may be traversed in unison with the knifebarrel.