Patent GB-458329-A (GB)
Title: Improvements in or relating to bottle or like capping machines
IPC: B67B3/04
Filed: 1936-01-29
Abstract: 458,329. Bottle - capping machines. KING, G. E., 23, North Cross Road, East Dulwich, London. Jan. 29, 1936, No. 2669. Addition to 448,666. [Class 125 (ii)] In a bottle-capping machine according to the parent Specification 448,666 in which the bottles are capped with metal foil caps cut and formed in a capping head fed with a continuous band of discs, the skirts of the caps being constricted into a groove round the bottle neck by compression of a rubber ring within the capping head, movement of the capping head is caused by means of sector racks, one fixed to the standard of the machine and the other mounted on a shaft, rotated against spring pressure by an operating handle, and carried by limbs connected with the standard, the capping head being suspended from the shaft by a pair of links and guided in movement along the standard. Preferably a pair of sector racks is disposed on each side of the machine. The band 2 of capping discs passes from the roll 1, rotatable on the spindle 3 carried by an arm 4 from the standard 5, to the feed table 6 slidable on an arm 7 at the side of cross-head 17 carrying the capping head 16. The table 6 is normally held in position on the arm 7 by a pin 8. A guide plate 9, Fig. 9, normally rests on the surface of the band of discs 2 and the table 6 has also a guide plate 10. The feed slide 12, Fig. 10, runs along table 6 with a lug 13 depending through a slot therein. The forward end of the slide has arcuate shaped forms 12a and its surface has circular recesses bounded on one side by projections 12b, 12c and bevelled off at 13a, 13b on the other side. The cross-head 17 has a lug 19 slidable on standard 5 and has pivots 22 for links 24 rotatable on a cross-shaft 23 carrying the handle 25, and journalled in arms 26 rotatably mounted on pivots 27 on the standard 5. The shaft 23 carries toothed sectors 28 meshing with larger toothed sectors 29 fixed on pivots 27. Between arms 26, the shaft 23 carries a pressure cam (not shown) which bears upon a roller 31, Fig. 5, carried by the capping head 16. The fixed sectors 29 carry springs 30 formed with detents normally engaged by pins 32 on the sectors 28. Coil springs 34 between the standard 5 and the movable sectors 28 normally act to hold the cross-head and associated parts up. The capping head comprises a cylindrical casting 35 fitting with a bayonet fastening into the head 17 and supporting a rubber ring 36 beneath a hollow cylinder 37 housing a slidable plunger 38 normally held downwards by an internal spring 38a. At the end of a down stroke of lever 25 plunger 38 engages the neck of the bottle and moves upwardly and the cam on shaft 23 engaging roller 31 compresses the rubber ring 36 to constrict the skirt of a cap into a groove around the bottle neck. The cylinder 35 carries on one side a steel guide and shearing plate 43, and on its lower end a flanged ring 39 held in position by springs 40 and adjustable nuts 40a. Pivoted to ring 39 is a lever arm 59 carrying a shearing blade 41 which enters a small cavity and co-operates with the blade 43 towards which it is pressed by a spring. The arm 59 carries an upwardly extending guide plate which bears against a projection on guide plate 43 and has a pin at its end. A spring pressed plunger 63 in flange ring 39 also bears against guide plate 43. Pins carried by the flange ring 39 engage pins on the standard 5 just before the capping head reaches its topmost position and the flange ring 39 is lowered from the cylinder 35 to permit entry of the leading disc of the band 2. A lever with cam surface fixed to standard 5 cooperates with a pin on lever 59 to separate the blades 41, 43 at the top of the upward movement of the head 17, and to bring them together to cut the band of discs as the head is lowered. The band feeding slide 12 is operated by three levers 71, 72, 73, the lever 71 being connected by a link 74 with the slide, lever 72 extending to strike a stop member 75 adjustable on a slotted arm 76 on the standard 5 and lever 73 having a pin which travels along the edge of a horizontally extending detent lever 77 pivoted at 78 and normally held upwards by a spring 90, to engage in notch 91 until the tail of the detent lever is depressed by an abutment 82 fixed on the arm 76 during the upward movement of the capping head, when the spring 83 moves the slide 12 forward the knife blades 41, 43 being separated to permit entry of the disc band into cylinder 35. An oil or air dashpot device may be provided to ensure gradual movement of the slide. The bottles stand upon one or more base blocks 15 according.to size and are located by an adjustable bracket 84. The discs of the band 2 are preferably serrated radially at the border to facilitate the formation of the edge of the cap. The band may be suitably enamelled or coloured during its manufacture.