| 摘要 |
To permit free selection of a threading path in a printing machine of the threading element, the threading element (14) has a cross section such that the resistance against bending of the element in any direction-with respect to the longitudinal extent thereof-is at least approximately equal; a suitable element is a cable, a spiral spring, rope or the like. The threading element is guided in a threading path by tubular threading guides and can be selectively placed in various paths by switches positioned in the threading path, and moved in the threading path by engagement with friction drive wheels.
|
