| 摘要 |
This disclosure relates to a novel retread mold which includes the usual matrices and bead wheels but additionally includes a cylindrical mandrel which forms an annular chamber adapted to receive a tire to be retreaded which when pressurized brings one of the bead wheels into forceful engagement with a locking arm carried by one of a pair of platens other than the platen carrying the last-mentioned bead wheel. Novel locking means include a threaded shaft carrying a nut to which is pivotally attached a plurality of locking arms cammed to a locking position with adjustment means being provided both relative to the locking means and to means which move the platens relative to each other to accommodate tires of different sizes.
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