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Parts of a rail and road transport, rail and road transport and rail and road transport station in a
Parts of a rail and road transport, rail and road transport and rail and road transport station in a
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机译：铁路和公路运输，铁路和公路运输以及铁路和公路运输站中的零件
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摘要
A signature stream is delivered to a pick-up station (80) by a conveyor (120) having cooperating vaccum means (128) for retaining the signatures in proper alignment upon the conveyor belt (122) as they approach the pick-up station, said vaccum condition terminating before the signatures are gripped by the jaws of a gripper assembly (30). Each gripper assembly is secured to a chain link (10) and includes a wrap spring (38) which normally holds the gripper jaws closed and which is activated when a gripper assembly release ring engages an opening cam preparatory to receipt of a signature. The chain links comprise a unitary body (12) having guide rollers (16,18) for guiding the chain through a track which may have a significant curvature due to the unique pivot ball (20) imbedded within the body of each link. The pivot ball serves as a swivel for the roller shaft and performs the dual functions of joining two adjacent links and supporting a pair of vertical guide rollers (16,18). Each link is provided with an arrangement for positively and securely mounting a gripper assembly thereof.
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