| 摘要 |
The drive rod is connected by a yoke to the upper piston and to the coffee feeder. Between the yoke and the feeder lies a pivoted rod that rotates in the yoke with the aid of a drive. The drive has a part locating in a guide. The part is a roller rotating about an axis at right angles to the rod. The rod is coupled via a cog gear to the feeder. The rod has a stop for the lower piston. The guide is a slot lying in the surface of the rod. The rod is toothed and engages a drive pinion. |
