| 摘要 |
A core enveloper, for applying a web of paper, plastic or the like, to a new core, for example, on an automatic web winder, is adapted to provide for web severing and core wrapping in either of two directions of wrap. The enveloper arms including the enveloper roll, the rider roll, the cut-off knife and web transfer brush are mounted on a subframe comprising a beam which, in turn, is rotatably mounted on a support frame and is thus movable, by a drive motor, to present the core in either an "over" or an "under" position with respect to the enveloper. The axis of rotation of the beam intersects a centerline through the core so that the geometry of the enveloper, with respect to the core, remains unchanged in either of the operating positions of the enveloper.
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