| 摘要 |
A cleaning wiper adapted to automatically maintain a fresh cleaning surface upon each utilization. Supply and take-up holders are mounted in a body for holding rolls of a cleaning web. The cleaning web, intermediate the supply and take-up holders, passes over a support member movably mounted within and accessible through a slot in one side of the body. Utilization of the cleaning wiper causes the support member to be moved from its resiliently biased position within the slot and activates an advance linkage. The advance linkage advances the rotation of the take-up holder a predetermined amount. |
