| 摘要 |
1,188,073. Endless conveyers. M. B. RASMUSSON. 8 Oct., 1968 [16 Oct., 1967], No. 47544/68. Heading B8A. [Also in Division F4] In an ice-confection machine of the type in which moulds are transported by a primary conveyer through freezing and defrosting tanks and sticks are inserted into the material in the moulds when semi-frozen, a secondary conveyer is provided for carrying stick-grippers, the grippers are transferred from the secondary conveyer into engagement with the sticks before the moulds pass through the defrosting tank and means are provided for returning the grippers with their associated confection to the secondary conveyer after defrosting. As shown in Fig. 2, the secondary conveyer 32 loosely carries gripper bars 44 in blocks, guide tracks 43 preventing dislodgement of the bars as the belt travels round its sprocket 34. Hydraulically actuated mechanism 58-62 transfers the bars from belt 32 into engagement with the sticks 30 projecting from the material in the moulds 24 carried by the primary conveyer 16, the sticks projecting through apertures in the bars and being retained by spring clamps 51. The moulds subsequently move downwardly into and upwardly out of a warm water tank (Fig. 1, not shown), for defrosting, and the ends of bars 44 then enter channels 72 carried by an endless chain 73 as shown in Fig. 6. Chain 73 is driven intermittently and unidirectionally by hydraulically actuated rack- and-pinion mechanism 82, 84, 86, 88 to lift bars 44 and their associated confections into a position in which they engage in the blocks carried by the secondary conveyer. The latter then transports the confection through a chocolate coating device to a release mechanism which includes a bar adapted to engage arms 53 of the spring clamps 51 to cause the latter to release the sticks 30. The freezing device comprises a brine tank and the conveyers 16, 32 are intermittently and synchronously driven. Conveyer 16 comprises parallel chains with mould plates extending therebetween the ends of the plates being attached to the chains by keyhole-slot and projection means (Fig. 5, not shown) or by engagement of plates on the chains between flanges on the plates (Figs. 9, 10, 12 and 13, not shown). The moulds may consist of plastics material and be snap-fitted in the plates (Fig. 11, not shown).
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