Patent GB-190417636-A (GB)
Title: Improvements in Machinery for Attaching Knotted Loops of Thread or Twine to Objects such as Paper Piles, Bags, Shoes and the like.
Inventor: HAAN EDUARD
Filed: 1904-08-13
Granted: 1904-10-06
Abstract: 17,636. Haan, E. Aug. 13. Tying and knotting ; sewing - machines, threading - - devices for hook needles ; threadcutters.-Relates to a machine for threading twine or thread through paper, paper bags, and shoes and the like, knotting and cutting it, and ejecting the articles after the operation. Uneven or knotted thread may be used, the threading-needle having a hook instead of an eye. The thread is passed from a cup 24, Figs. 1 and 2, mounted on the pillar 25, to the tension device 22, which can rock on a pin 23 in front of shaft 20. The framing 2 of the machine is fixed on a base 1 and carries three horizontal shafts 3, 4, 5. Of these, the driving-shaft 3 carries a driving-pulley 6 and a toothed pinion 7 which gears with a toothed wheel 12, mounted loose on the shaft 4 but capable of being clutched thereto by a clutch operated on by the pedal lever 13. In operation, the article is placed on the table 36 under the clamp 38, and the machine is thrown into gear by the pivoted pedal lever 13. The grooved cam-disc 14, fixed on the shaft 4, then moves the lever 17, pivotally mounted at 16, and imparts a rocking motion to the shaft 20 and to thread-tongs 21 through the connecting- rod 18 and crank-arm 19. The thread is then seized and laid over the hook 34 by the tongs 21. As the grooved cam 15 of the shaft 4 rises, its left-hand groove lifts the roller 11 of the lever 8, which is loosely mounted on the shaft 3 and has its front end pivotally engaged with the block 10. The block 10 and needle-bar 9, to which are fixed the hooked needle 58 and lever 55, are then raised until the needle 58 is above the thread after perforating the paper &c. The lever 55 is pivoted at its lower end to a looped extension 54 of the block 10, a spring 56 forcing its upper end against a roller 57 carried by the framing. By this arrangement, the lever 55 receives a rocking motion so that its forked upper end can be opened or closed by being forced against the stretched thread, which is thus caught in a notch for its reception, the jaw 59 springing back by means of a spring. The needle 58 and lever 55 then begin to descend, and the thread is forced into the hook of the needle by a forward movement of the tension device and drawn through the paper pile, the thread being drawn out of the tongues 21 at the same time by the grippers 55, 59. At the moment the needle assumes the position shown in Fig. 7, the pin 47 of the block 10 will have arrived at the curved part of the slotted arm 48, causing its upper end to rock on the pivot 49. By this means, the pointed movable limb 51 of the tongs 50, 51 is inserted in the loop of the thread and immediately after the tongs are closed, as shown in Fig. 7, owing to the pin 52 sliding in a cam-groove 53 of the framing and turning the limb 51 on its pivot. The two threads are then knotted and cut by the knotting-device carried by the shaft 41, a toothed pinion 42 of which gears with a toothed segment 40 carried at the loose end of a lever 39, this lever, mounted on the shaft 5, being actuated by the right-hand cam-groove of the disc 15. The knotting-device is opened and closed by means of a pin on the collar 44 of the shaft 43, Fig. 1, which pin engages with a cam-groove 45 at the side of the segment 40. Fig. 9 shows another knotting and cutting device. It consists of an elbow lever a, b which carries a cutting- blade, a second cutting-blade f being formed at the side of the beak-shaped part d. After the knotting operation, the pin g engages with the disc 43<x>, Fig. 2, the lever a, b is moved back, and the cutters are forced against the thread. The pile of paper is then drawn away from the knotting-device by the lever 31 pivoted at 30. This lever has a slotted upper end which engages with a rod 32 having a roller 33, which slides over the cam-surface of a plate 35, and a hook 34. It is actuated by the middle cam-groove of the disc 15 engaging with the roller 26 of the lever 28, which is pivotally mounted at 27 and connected by a rod 29 to the lever 31.