| 摘要 |
Means 38 is provided for enabling the switch actuating cam 12 to be manually rotated independently of the drive motor 20 and means is provided which is responsive to the selection of manual cam rotation to limit the manual cam rotation to a desired angular position. The means 38 includes an actuator 40 carried on shaft 14 and when the shaft is axially indexed the actuator releases a member 44 under spring bias 62 to allow it to engage with the cam 12. Manual rotation of the shaft causes the member 44 to engage a step of the cam track 46 thereby limiting rotation to the desired angular position. <IMAGE> |
