Patent GB-189924449-A (GB)
Title: Improvements in Knot Tying Devices for Wood Bundling Machines.
Inventor: HINDLEY WILLIAM
Filed: 1899-12-08
Granted: 1900-09-15
Abstract: 24,449. Lake, H. H., [Hindley, W.]. Dec. 8. Parcelling wood. - A machine for bundling wood is shown in side view in Fig. 1, and Figs. 25, 26, 27, and 28 show various stages in the formation of the knot from the binding- cord. The cord is held by spring - controlled clamping-jaws 13, carried by a slide 11, which is moved forwards by means of a link 19, lever 20, and cams 23, 24, engaging with a curved projection 22 on the pivoted end of the lever 20 ; the slide is returned by means of cams 27, 28, 29 on a disc 30, which actuate a slotted sliding- block 32 engaging with a pin 33 projecting from the lever 20. The jaws 13 are operated, so as to grip the cord, by the action of a wedge forming part of an oscillating block 34, mounted upon the slide 11 and provided with studs 37, 38, which strike against a collar secured to the lower part of a rod 40. This rod 40 is connected to an oscillating lever 41 actuated by a cam on the shaft 26. A pin carried by a block 53 is adapted to be thrown beneath the lower side of the loop of the binding-cord, at the proper time, to retain and hold the loop while it is being folded ; the block 53 is actuated by an arm 52 carried by an intermittently-rotating rod 48 mounted on the slide 11. When the slide 11 moves forwards, the cord is gripped between the spring-pressed jaws 56 of a gripper 55 connected to a rod 59 movable longitudinally within a head 60, which is fitted to slide transversely across a frame 61 by any desired means, such as a lever 104 and cam 107. The body of the gripper 55 is slotted and travels on a shaft 58<a> which is perforated to receive a pin 58<b>; the shaft 58<a> is mounted on the sliding-rod 59, and is rotated by means of a curved guide 62 which is fixed to the head 60 and bears against the shaft 58<a> when the rod 59 is moved outwardly. The rod 59 has a retaining-pawl 65 engaging with a plate 66 on the frame 61, and is actuated by a block 64, which bears against springs 62, 63 on the rod 59 and is connected to a pivoted lever by a rod 68 ; the pivoted lever is oscillated by means of a special arrangement of cams. One of the jaws of the gripper 55 is actuated by means of a cam carried by a shaft which is oscillated by an arrangement of links and cams. The end of the loop of the cord is firmly held, during the folding operations, by a needle carried by a sliding- block 96, mounted upon a support 97'. The needle is forced into the cord by means of a cam carried by a shaft 99, and is withdrawn by the action of the block 53 on the block 96. The shaft 99 is mounted in the head 60, and is oscillated by means of a pivoted lever 101 and cam 103. The support 97<1> may be secured to a slide 110 fitted within the head 60 and actuated by means of a sliding-bar 112, link 115, lever 116, and cams 118, 120. For folding or doubling the loop upon itself, as shown in Fig. 26, folding-fingers are provided upon rods 125, 125', which slide through the head 60, and are connected by a cross-bar to a spring-pressed rod 123 adapted to be operated by a bracket 121 connected to the bar 112. After the loop has been doubled over, the gripper 55 is forced upwards, so as to pass the free end of the cord through the double loop, as shown in Fig. 26. This operation is effected by means of a lever 129, pivoted to the support 61 and having a bent end which pushes the gripper 55 upwards. The lever 129 is actuated by a rod 130 connected to a pivoted lever 131, which is oscillated by means of a cam. The free end of the cord is gripped between the jaws of a nipper, and during the backward movements of the nipper and cord carrier the knot is drawn into the form shown in Fig. 27, and then tightened as shown in Fig. 28. After the knot has been formed, the cord may be cut by any suitable cutting-mechanism, such as a pair of longitudinally-movable bars 139, 139', which have teeth on their opposed ends and are actuated by means of a lever 140' and cam 142. A series of knotting-devices may be connected and worked simultaneously, so as to bind strips of wood, which are afterwards cut into bundles or packages of the required size. In a modified form of knotting-apparatus, there are only two cams on the disc corresponding to the disc 30, Fig. 1, the cord carrier being similar in construction to that shown in Fig. 1 ; the wood is fed between a pair of pivoted jaws for forming a bundle and is next dropped between compressing-jaws arranged beneath the tying-mechanism, which is actuated by a modified arrangement of linkwork. The cord carrier may be arranged to move laterally, instead of the head 60, Fig. 1, during the operation of folding the loop.