| 摘要 |
In means for winding narrow webs particularly very thin foil, using at least one clamping head (14) mounted on a pivotable supporting bracket (19) the web roll core (22) is clamped in winding position by two rings slidable axially in relation to each other, being a bearing ring (19) and a clamping ring (36) with respective sloping surfaces (23, 37) cooperating with an annular spring (25). A ball detent device is provided which, when an actuating body (28) on the one hand and the clamping ring (36) on the other are pushed in the axial direction, enables the clamping device to be released with very little effort. <IMAGE>
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