| 摘要 |
A machine with a rotary turning apparatus in accordance with one embodiment of the present invention includes a housing with at least one end wall, at least one bearing assembly, a shaft, a passage, a pair of shoulders, an engagement device, and a biasing device. The shaft is mounted for rotation in the housing and on the bearing assembly. The passage extends through the wall to provide access to one end of the shaft. The engagement device has an end which is shaped to mate with the one end of the shaft and is mounted for movement in the passage between the pair of shoulders which are located on the wall in the passage. The biasing device is positioned between one of the shoulders and the collar which extends at least partially around the engagement device. The biasing device biases the one end of the engagement device away from engagement with the one end of the shaft. By compressing the biasing device, the end of the engagement device can be mated with the end of the shaft for manual rotation.
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