| 摘要 |
In apparatus of the type comprising a case (1) which has at an upper cavity (13a) for a spare roll (15a) and a lower cavity (13b) for a roll in use, a lower dispensing passage (4), and a withdrawable retaining means (12) interposed between the two cavities, the retaining means (12) is actuated by a bearing means (11) positioned in the lower cavity and which is not accessible from outside the case. The means (11) and (12) are in the form of rods carried between two pivotally mounted arms (8a). The rod (11) in its retaining position, where it supports the lower roll, is at a distance from roller 2b, which together with a movable roller (2a) defines the dispensing passage (4), less than the diameter of the cylindrical roll support (16b). Pulling on the final length of material attached to the support (16b) causes both roller (2a) and rod (11) to move, thus allowing empty support (16b) to be expelled and rod (12) to move and allow the spare roll to drop down. Spring (20) then causes rods (11) and (12) to return to their retaining positions. <IMAGE> |
