B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
101/82
B41F 21/10 (2006.01)
Patent
CA 2007787
The sheet guide drum for printing machines for either first form or sheet work is equipped with an improved clamp coupling and features an electrical fuse protection. A segment (2) on the circumference of the outer drum is adjustable against an inner shaft (1) in the direction of the circumference, and is lockable with this shaft by means of a clamping device. Friction members (7) secured in a pack on to the segment (2), and friction members (10) secured on the shaft (1) can be gripped between two counter- bearings (11, 14) supported on the shaft (1), by means of a moveable clamping lever (17) positioned transversely to the axial direction of the clamping force, whereby the clamping lever (17) acts as a rocker, and one of its ends is subject to spring force in the direction of clamping by means of the tension rod (21), which is secured against rotation. In addition, the sheet guide drum features an electrical fuse protection (30) for the clamping device, which is designed in a special way and acts with a new type of buffer limitation for a rotatable tensioning element, allowing several revolutions of the actuating element (27) between the buffer positions.
Heidelberger Druckmaschinen Aktiengesellschaft
Johnson Douglas S. Q.c.
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