This unit is designed to "continuously" induct books, utilizing a dual stack technique. In other words, when one stack is completely fed, the unit senses it an immediately starts drawing off the other stack. In the meantime, the operator can recharge and "arm" the empty stack column.
As a side note, this design comes on casters for mobility and /or ganging of multiple units on an infeed line. The only requirements are to connect it to shop air and 120 volt power.
Its modularity and flexibility make it very easy to integrate into existing automation, and in many cases it can induct additional items such as boxes of articles, software, etc.