Patent GB-557854-A (GB)
Title: Improvements in or relating to apparatus for capping bottles and like containers
IPC: B67B3/02
Filed: 1942-06-04
Abstract: 557,854. Capping bottles &c. PARFITT, A. W. (Williams Sealing Corporation). June 4. 1942, No. 7603. [Class 125 (ii)] The capping head of a machine for applying caps to bottles and like containers has a portion carrying the cap-applying chuck movable towards and away from a fixed bottle support and moved by a cam on a shaft journaled in the movable portion of the head, the shaft being rocked and the cam engaging an abutment in the head. As shown, the shaft 94 carrying the cam 95 is journaled in a housing 90 forming part of the movable portion 89 of the capping head 84 provided on a frame 20 which is adjustable on a vertical post 18 mounted on the base plate 15; the frame is moved by a vertical screwed shaft 24 engaging a nut portion on the frame and is locked in the adjusted position by a clamping screw 28. The abutment consists of a roller 98 carried by a rod 97 slidable upwards in the head 84 against the action of a spring 103 and a spring 100 in the head portion 89 keeps the roller 98 in engagement with the cam. The shaft 94 carries, outside the head, a lever 104 connected by a link 105 to crank disc 107 on a shaft 42 journaled in arms 40, 41 rising from the frame 20 and carrying a clutch element 46 keyed thereto and a sprocket 43 in the hub loose thereon. The sprocket is driven from a motor 31 and the hub is clutched to the element 46 and shaft 42 when a spring-controlled key carried by the element 46, is released by a finger 47 and projected into engagement with the hub, a cam 64 on the element 46 engaging a link 58, connected to the finger 47, at the end of one revolution of the shaft 42, and a spring 49 then causing the finger to return to position to engage the key and open the clutch. The finger 47 has a pin 62 engaging a curved slot in the link 58 which is connected to a bell-crank lever 55 having the arm 54 engaging a recess 53 in a slidable trip 52 mounted in a bracket 51 projecting from the frame and pushed inwards by the neck of the container to be capped as the neck of the container is moved under the capping head, such movement of the trip 52 moving the finger out of engagement with the key and causing one revolution of the shaft 42 which actuates the shaft 94 and causes the housing 90 to descend against the action of the spring 103 and apply the cap 111, which has been positioned in a chuck 91 on the housing, to the neck of the container. If the cap has a locking lever 112, this is turned down against the neck to lock the cap thereon by an eccentric finger 110 on a shaft 109 journaled in a bracket 108 projecting from the housing 90 and carrying a gear 113 geared to a pinion 115 which is rotated by a link 117 pivoted eccentrically thereto and passing through one end of a lever 118 pivoted on the frame and having its other end engaged by a cam 120 on the shaft 42; a spring 121 on the link 117 and disposed between an adjustable nut 120 thereon and the lever 118 transmits the movement of the lever to the link 117 and holds the lever against the cam 120. The neck of the container is held in the cap-applying position by jaws 67, 68 which engage the neck under beads thereon and are clamped on the neck against the action of a spring by a cam 78 engaging between projections 73 on the jaws and carried by a shaft 77 journaled in the bracket 51 and actuated by a link 81 connected to an eccentric 83 on the shaft 42.