| 摘要 |
A turntable type ice cube maker in which a series of pivoted dumping cups having water-fill, freeze, and dump stations is revolved by a gearmotor drive affording overload protection. This protection can be called into play in the instance, for example, when the turntable rotary mechanism jams on a piece of stray ice. No excessive torque will be encountered if and as the mechanism thereupon stalls out, because of overload protection provided by a permanent-magnet clutch, interposed in the drive line from the motor of the gearmotor to the gearing thereof being protected. A most important factor is that the clutch, which continually slips while stalled out, is consistently exerting maximum rated stall torque in the drive direction for immediate restart of the mechanism as soon as the impediment causing jamming is dislodged, and a further factor is that the clutch while so slipping is in actuality exerting cycles which pulse, tending to release and even to dislodge the impediment in some cases.
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