New device graduator and water dispenser for coffee makers (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the object of the main patent, essentially characterized by having two cylinders, one upper and one lower connected by an intermediate frame and in which are mounted respectively control and infusion pistons, respectively, integral with an axial rod common, of whose cylinders the upper one is of double effect and has its two chambers connected with a hydraulic distributor that in the rest position, elastically determined, sends water under pressure to the upper chamber, while in the work position retained by A sear, which can be released by a stop integral with the lower piston, when it reaches its dead center high, sends the pressurized water to the lower chamber of said double-acting cylinder. (Machine-translation by Google Translate, not legally binding)