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Individual
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Individual
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Priority to ES0038320UpriorityCriticalpatent/ES38320U/en
Publication of ES38320UpublicationCriticalpatent/ES38320U/en
Improved machine for the elaboration of espresso coffee, in which said elaboration is carried out by the passage of hot water under pressure driven by a piston that slides inside a cylinder, characterized essentially by the fact that said piston is solid, presenting a conduit bent, one of whose ends, upper, is located on the side of said plunger to coincide, at the moments of elevation thereof, with a hole made in a body integral with the cylinder and through which the hot water intake takes place coming from the boiler; and the other, lower end, which is located in the lower, central and vertical part of the plunger, goes to a hole made in the central part of the face or bottom base of the plunger and in whose hollow a valve is housed, and so that the movement of the piston, which is driven by its corresponding rod disposed inside the cylinder and which is coupled to an upper external lever provided with rotation, is synchronized with the actuation of a valve-device, arranged in the upper part of the machine, which aims to inject into the boiler a quantity of cold water equivalent to the amount of hot water discharged from the boiler, so that it remains always full, and this automatically. (Machine-translation by Google Translate, not legally binding)
ES0038320U1953-09-301953-09-30Improved machine for making espresso (Machine-translation by Google Translate, not legally binding)
PendingES38320U
(en)
Improvements in the hydraulic mechanisms of driving of express steam-free coffee machinery (Machine-translation by Google Translate, not legally binding)