| 摘要 |
<p>This disclosure relates to a mechanism for maintaining alignment between two relatively movable members, specifically platens or supports for retreading molds, although not limited thereto, and includes a pair of generally parallel screws having a common feed mechanism, the screws being fixed to the members against axial movement relative to each other with one of the screws being shiftable relative to the feed mechanism to maintain alignment between the two platens or supports.</p> |
