Abstract: Two movable members, one on either side of a pre-folded continuous form entering a paper stacking area, are driven according to a determined position of the pre-folded form to push a leading edge of the form to one or another side of the stacking area so that the folds in the form will develop correctly in a stack. Only one of the members is permitted to contact the form at any time, and the members are separated by a sufficient angle so that no position of the members permits both members to contact the form. After directing the first and second sheets of the form, the members return to a home position in which neither member obstructs or interferes with subsequent stacking of the form. The position of the pre-folded form may be determined by a leading edge sensor, by a sheet feed rate sensor, by a fold position sensor, by a fold orientation sensor, by timing from a predetermined position, or by manual input.

Abstract: A method and mechanism for sensing the position of the top of a stack of material in a stacking apparatus. The mechanism includes, a hub assembly, an arm, a stop, a torsion device that biases the arm toward the stop, a first trigger and a second trigger. The hub assembly has a hollow center portion configured to accept a shaft that is rotatably and driveably mounted to a stacking apparatus. The hub assembly includes a hub having a first form and a second form each mounted to a respective hub end. The arm has a first end pivotally mounted to the first form, and a second end configured to removably contact the stack of paper. The first trigger is configured to trigger a height sensor. The height sensor is mounted to the stacking apparatus, and the height sensor is configured to provide a first signal to a central processing unit to lower a collection table when the arm triggers the height sensor. The stop is mounted to the first form below the arm, the stop configured to stop the pivoting movement of the arm.

Abstract: Two movable members, one on either side of a pre-folded continuous form entering a paper stacking area, are driven according to a determined position of the pre-folded form to push a leading edge of the form to one or another side of the stacking area so that the folds in the form will develop correctly in a stack. Only one of the members is permitted to contact the form at any time, and the members are separated by a sufficient angle so that no position of the members permits both members to contact the form. After directing the first and second sheets of the form, the members return to a home position in which neither member obstructs or interferes with subsequent stacking of the form. The position of the pre-folded form may be determined by a leading edge sensor, by a sheet feed rate sensor, by a fold position sensor, by a fold orientation sensor, by timing from a predetermined position, or by manual input.