| 摘要 |
A winding core 1 of small diameter is mounted at each end on a locking core chuck 3 coupled to a shaft 14 supported by spaced bearings 4 and 8 located within a housing part 5 at the free end 6 of a rewind arm structure. The central part of the shaft 14 has a pulley portion 12 over which a drive belt 13 runs. A larger core 2 is mounted at each end on a heavier duty locking core chuck 7 carried by larger bearings 8 which are located also within the housing 5. The housing 5 is cut away or stepped at 9 whereby a contact pressure roller 10 having a width greater than that of the core 1 may be accommodated and brought into contact with the core 1 at least at the minimum diameter thereof. The stepped part 9 of the housing 5 on each arm enables a larger and more substantial bearing assembly 8 to be provided for the larger diameter cores 2 whilst retaining a common drive shaft arrangement.
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