Patent ID: 7125216

Claim:
A device for loading an intake of a three-knife trimmer with book blocks comprising: a feed conveyor for conveying an imbricated flow of book blocks; a stacking device having a magazine mode and a counted stack mode and including a magazine having a first upper magazine intermediate shelf that is selectively opened and closed and a second lower magazine intermediate shelf, a delivery table arranged below said magazine, and an ejector for cyclically and synchronously feeding a stack of book blocks to the intake of the three-knife trimmer; wherein the feed conveyor is formed by a conveyor belt continuously driven at a first velocity (v S ) and by an accelerator conveyor located directly downstream thereof in the feed direction and driven at a higher velocity (v B ), and a separating device is arranged in a transition zone intermediate the conveyor belt and the accelerator conveyor for interrupting and holding back a portion of an imbricated flow of book blocks, whereby a gap is created in the imbricated flow which provides a time window for the opening and closing of the first magazine intermediate shelf.