Goss Graphic Systems Limited

Charles Tomczak

A printing press having a jaw mode assembly and a rotary mode assembly with a single folding cylinder adapted to feed either the jaw mode assembly or the rotary mode assembly is disclosed. A moving web of material is initially trained about the folding cylinder and cut into a signatures which are then temporarily held on the folding cylinder. A folding blade extends from the folding cylinder to initiate a fold in each signature and direct each signature to either the jaw mode assembly or the rotary mode assembly. The timing of the folding blade is coordinated and adjusted using an indexable spider assembly to feed either the jaw mode assembly or the rotary mode assembly.

Combination rotary and jaw folder for a printing press

A fly stripping mechanism for stripping sheet-like objects such as printed material from a rotating fly assembly having a plurality of fly pockets is disclosed. A cam adjacent the fly assembly remains stationary as the fly assembly rotates. A lever is disposed adjacent each fly pocket and is also pivotally mounted to the fly assembly. A cam follower is connected to each lever. As the fly assembly rotates, the cam follower follows the contour of the cam. The contour of the cam slows the rotation of the cam followers relative to the rotational speed of the fly assembly. The slowed rotation of the cam followers in turn causes an end portion of the lever to move from a position adjacent a rearward portion of the fly pocket toward a forward portion of the fly pocket, thereby ejecting printed material from the fly pocket. A method of ejecting sheet-like objects such as printed material from a fly pocket by moving a portion of a lever from a position adjacent a rearward portion of the fly pocket toward a forward portion of the fly pocket is also disclosed.

Stripping mechanism for a delivery fly assembly

A drive device (10) for a folder in a printing press having a folding blade mounted to a folding blade shaft (12). A drive gear (16) drives a folding blade shaft gear (14). The drive device also includes a plunger (24) having an intermediate gear (28) between the gear (14) of the folding blade shaft (12) and the drive gear (16), and a device for moving the plunger (24) between a first longitudinal position and a second longitudinal position. In the first longitudinal position, the intermediate gear (28) meshes with the folding blade shaft gear (14). In the second longitudinal position, the intermediate gear (28) is out of register with the drive gear (16) to prevent the folding blade shaft gear (14) from being driven by the drive gear 16. The drive device (10) may also include a cam (38) and an indexing ring (56) operable in response to axial movement of the plunger (24) to cause the intermediate gear (28) to be moved from the first longitudinal position to the second longitudinal position. The cam (38) and indexing ring (56) are designed to index or rotate in response to axial movement of the plunger (24). The drive device (10) may also include an interlocking tang (48) and a collar (50) to prevent the folding blade shaft (12) from rotating when the folding blade shaft (12) is not being driven.

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Naperville, IL, United States of America

Charles Tomczak