Patent GB-305773-A (GB)
Title: Apparatus for wiring bales or other packages
IPC: B65B13/28
Filed: 1927-12-23
Abstract: 305,773. Harvey, L. M. Dec. 23, 1927. Wire strainers.-Relates to means for restoring the tensioning means after the twisting and cutting operations have been performed in a balewiring apparatus in which the throw of a lever in one direction effects the tensioning of the wire whilst the throw in the reverse direction intertwists the ends of the wire and cuts off spare wire near the twisted portion. One end of the wire is secured between a fixed vertical pin 84, Fig. 3, and a serrated dog g pivoted on a second vertical pin 76 on an arm A pivoted at 56 to a base plate B. The wire passes under notched cutters C, C<1> and guides 3, 3<1> and through an intermediate slotted pinion 16, around the bale, again through the guides and slotted pinion and its other end is anchored between a horizontal anvil 88 and a serrated dog g<1> pivoted on a horizontal axis 87 to a lug on a second pivoted arm A<1>. For tensioning the wire the arms are caused to separate a pair of toggle links t, t<1>, which are caused to move slightly past straight-line position by the sliding movement of a connecting member F which is formed with surfaces 59, Fig. 13, engaged by rounded extensions 65, Figs. 6 and 20. of a channel-shape operating lever O. The portion of the web 37 of the lever near the shaft 29 on which it is loosely mounted is cut away to accommodate a gear wheel G and a pair of discs D, D<1> which are secured to opposite faces of the gear wheel. The gear wheel, discs, and lever are loosely mounted on the shaft 29 between brackets E which have flanges 26, Fig. 11, by which they are secured to the base plate, the front portions 12 of the flanges being formed to take over the plain surfaced hubs of the slotted pinion which extend on both sides of the toothed portion thereof which is housed in a recess 17. As shown in Fig. 6 the disc D<1> is cam shaped. When the lever is swung counterclockwise for tensioning the wire, a spring-pressed plunger 36 carried by the lever runs idly over the cam surface, but when it is swung clockwise the plunger engages one of the shoulders 35 to rotate the gear wheel for the twisting operation. The disc D is provided with a pair of diametrically opposed recesses 44 staggered by approximately 90‹ from the shoulders 35 on the disc D<1> and one of these recesses is normally engaged by a locking dog 45 pivoted on a pin 46, Fig. 11, to prevent rotation of the gear wheel during tensioning. A slight overtwist is put on the wire by swing- ing the lever to the fully horizontal position shown in Fig. 6 by which time the cutters will have been actuated against springs by lateral projections 68, Figs. 5 and 20, on the lever head. After the wire has been cut, the cutter springs raise the lever from the position of Fig. 6 to its normal position of rest shown in Fig. 5. During the raising of the lever to its normal position a horizontal projection 71, Fig. 20, from a lug 70 depending from the lever engages under one arm 53 of a lever L, Fig. 6, the other end 54 of which engages the rear end of the sliding element F to move it to the left, Fig. 3, to break the toggle and permit a spring, not shown, to draw the lever arms A, A<1> inwardly in readiness for taking a new wire.