Patent GB-280623-A (GB)
Title: Improvements in or relating to closure devices for bottles, jars or the like
IPC: B67B5/06
Filed: 1926-08-16
Abstract: 280,623. British Sure Seal Co., Ltd., and Stephens, W. A. Aug. 16, 1926. Hollow - ware. - The ends of a locking ring for a bottle, jar, &c. closure are joined by opening up the tongue and setting it back through an angle of 90‹ or more, curling the strip until the tip of the tongue meets the slot ready for linking, effecting the linking by continuing the curling movement, returning the tongue to its pristine position and finally locking the ends by hammering or pressing them. The method is especially suitable for associating the cap and ring sold under the registered Trade Mark " Phoenix," an apparatus suitable for this purpose being shown in plan in Fig. 1 and in sectional elevation in Fig. 3. Two vertical supports 1, 2 mounted on a base are formed with raised portions 1<b>, 2b. A main shaft 3 journaled in the supports carries operating cams 6 - - 11, and drives a second shaft 4 from which the curling-mechanism is driven intermittently. Secured to the support 2 and supported also by a pillar 16<a>, is a platform 16 on which a feeding- slide 15 is reciprocated by a bell crank lever 12 engaged by the cam 7. The strips to be treated rest in overlapping relation with their slotted ends or " tails " on a sloping abutment 20, Fig. 3, their heads or tongued ends resting within the tongue of the next lower strip. As the slide 15 moves forward, a vertical projection 17 at the rear thereof engages the lowermost strip and feeds it forward until its tongue is disposed over a bifurcated portion at the end of the platform 16 and its head is against a gate 21. Magnetic means are provided to hold the strip against the platform. The strip, in its progress, draws the superposed strips with it, an eliminator 83 preventing the third strip from moving too far forward. As the strip comes to rest, an inclined plunger 19 disposed in a barrel 18 and adjustable as to its inclination is thrust upwards by a cam 32 on the shaft 4 and bends the tongue upwards through an obtuse angle. Plates 27 above the arms of the bifurcated portion hold down the strip during the tongue-bending operation. The strip is then advanced further by the slide 15 to the curling-device which comprises a holder H provided with a spring pressed plunger 22. The holder H is rotated intermittently through one revolution by a ratchet and pawl device 55, 56 operated by a crank disc 58 on the shaft 4, and is retained in its stationary position either by a brake 59 or by a pawl engaging a notch in it. During this rotation a projection on the holder engages an arm on a lever which carries the gate 21 thereby lifting the gate out of the path of the strip which advances and strikes the rounded head of the plunger 22, depressing it until the aperture made by cutting the tongue allows it to rise and engage the strip to draw the strip around it. Guides 28, 28a, encircle the holder H to keep the strip pressed closely against it, cam faces 29 on the guides serving to direct the strip into its curved path. As the rotation is completed, the tongue arrives beneath the slot in the strip, the cam faces 29 serving to guide the slot over the tongue to engage them. A presser 35 pivoted at 36 in the guides 28, 28a, is depressed by a lever 37 operated by the cam 9 to press together the head and tail of the strip and the cam 8 simiiltaneously operates a lever 42 which actuates a bell crank lever 45 to the end of which is pivoted a link pivoted also to a link pivoted to the presser 35, the movement causing the link 47 to return the tongue of the strip to its pristine position. The holder H is mounted on a hollow shaft through which passes a rod 49 carrying at its end a plate 50 on which are mounted claws 51. These claws rest in slots in the holder and have shoulders adapted to engage the edge of the strip and thrust it off the holder when the rod 49 is displaced by a lever 48 controlled by the cam 6 on the shaft 3. The holder may support a cap and the strip be coiled directly on the cap. For this purpose, caps are fed down an inclined shoot 64 into an inclined U-shaped holder C as described in Specification 280,839. Only one cap is delivered at a time a projection 78 on a pivoted arm 76 controlled by the cam 10 checking the movement of all but the first cap. The cap thus held back is prevented from contacting with the cap in the holder C by a slide 70 secured thereto. The holder is supported by a sleeve 65 which is mounted on the base of the machine and through which passes an inner tube 66 adapted to receive a slidable rod 67 having secured to its end a boss 69 between which and the tube 66 a spring 68 is disposed. As the strip is fed on to the holder H. the cam 11 actuates a lever 11<a> the outer end of which is connected to the boss 69, the tube 66 being thereby displaced and moving the holder C until the lower part of the cap contacts with the holder H, a spring-pressed pivoted guard plate 71 being pushed out of the way by a projection 73 on the holder C. When further movement of the holder C is arrested, the continued movement of the lever 11<a> compresses the spring 68 and causes the rod 67 to push the cap on to the holder H. The return movement of the cap holder C coincides with the movement of the ejector rod 49 and wings 74 on the guard plate 71 guide the cap and ring into a delivery shoot 75. The engaging face of the holder H may comprise one or more movable rings to adapt it for use in the different forms of caps and its rear face may have an adjustable flange to accommodate locking rings of different widths. Instead of using strips with slightly upstanding tongues, the tongues may be scored out only and the plunger 19 free them from the strip and set them up to the required angle.