Patent GB-391665-A (GB)
Title: An improved wire binding and tying machine
IPC: B65B13/28
Filed: 1932-08-29
Abstract: 391,665. Wiring bales &c. MONOPOLI, G., Maitlands, Stoke, Nelson, New Zealand. Aug. 29, 1932, No. 24138. Convention date, Sept. 21, 1931. [Class 45.] A bale &c. wiring-machine producing the tie described in Specification 374,814, [Group XVII], wherein the free end of the wire is bent back on itself and the wire, after passage round the bale &c. is passed through the loop formed by the bent free end, the three adjacent and parallel wires thus formed being subsequently intertwisted, comprises gripping members 43, 44, Fig. 4, for the portion of the wire leading from the supply reel and carried by a block 33 which is slidably mounted on a base plate 20. The block is normally drawn to the left by a spring 34 and is moved against such spring to tension the wire by means of a rack 35, Fig. 3, secured to the block, and pinion 36, Fig. 4, rotated in one direction by a spring-biassed pawl 39 on a lever 37 loose upon the pinion shaft 38. A pawl 42 and ratchet 41 prevent return of the block until the pawl is released by a lever 70. The free end of the wire is passed through an inwardly extending slot 51 in the front edge of a transverse flange 48 and is bent back on itself around an adjacent pin 50 projecting upwardly from a lever 47 pivoted to the flange. The lever is arranged to be depressed against a spring by means of a cam 52, Fig. 3, on a locking lever 53 when the latter is swung by a spring 56, Fig. 4, around its pivot to a normal position away from those shown in Fig. 3, so that the pin is thereby depressed below the bottom of the slot 51. On moving the lever 53 against its spring 56 the cam 52 frees the lever 47 so that the spring below this lever raises it and the pin 50 to extend across the slot in the flange. Further movement of the lever 53 to the dotted line position bends the free end of the wire back on itself and the lever is locked in this position by means of a pawl 63 engaging a tooth 62 on the lever. The slotted twisting pinion 28, Fig. 4, is journalled in a gear-casing 25 and is rotated by means of a pinion on a shaft 24 and an intermediate gear wheel on a shaft 32, the first and slotted pinions each rotating three times for one rotation of the intermediate gearwheel. The portion of the shaft 32 which extends beyond the casing 25 which is journalled in a bearing plate 57 carries a series of cams which, as the shaft reaches the end of its full rotation, operate in succession (i) to release the clamp 44, (ii) to release the pawl 63 from the tooth 62 permitting the lever 53 to be turned by its spring to depress the pin 50, (iii) to depress the cutter 65, Fig. 4, to sever the appropriate wires, and (iv) to operate the lever 70 to release the pawl 42 and permit the block 33 to be restored by its spring 34. The pin 45 carrying the gripper 43 extends rearwardly through a horizontal slot in the longitudinal vertical flange 22 of the base plate and a radial arm is secured to the rear end of the pin. This arm engages a collar 77, Fig. 3, which is slidably but non-rotatably mounted on a shaft 78 and is provided with an arm 79 which, when the shaft 78 is rotated, swings and raises the radial arm on the pin 45 thus rotating the latter to release the gripper. The shaft 78 is rotated by a cam on the shaft 32 engaging an arm projecting therefrom. The lever 70 passes through an aperture in the upper portion 71, Fig. 4, of the block carrying the cutter 65 so that when the cutter is depressed by the engagement of a cam on the shaft 32 with one end of a bellcrank lever 68, pivoted at 67, the other end 66 of which engages the block 71, the lever 70 is also rotated to release the pawl 42. The slot 38 in the bearing plate 57 adjacent to cutter is provided with steel lining plates 59.