| 摘要 |
<p>The apparatus has a revolving drum (4) driven in rotation by a crank (3) including a rotating shaft whose end is detachably coupled to the drum. The drum is disposed in a semi-cylindrical cradle that is housed in a lower part of (2a) a cover. An upper part (2b) of the cover is mounted pivotally on the lower part. The parts include respective support rings (24, 25) that axially engage with the shaft when the crank is coupled to the drum.</p> |
