Coffee grinding, portioning, and pressing device

摘要

A coffee grinding, portioning, and pressing device (10) includes a coffee bean storage container (20) and coffee grinding mills (24) located under the storage container. Coffee ground by the mills is delivered from the grinding mills (24) into a ground coffee collection chamber (40) and then passes from the collection chamber through a motor-driven pressing tool (50) directly into a detachable delivery filter (14) which is temporarily attached to the device. The shape and rotational motion of the pressing tool cause the ground coffee to be directed through the tool and into the filter container. The pressing tool (50), which is biased downwardly by a spring tensioning mechanism (70) that transmits force to the pressing tool (50) through a tensioning drive axle (74), incrementally and uniformly tamps the coffee into the filter container as the tool rotates. The accumulation of compressed coffee underneath the pressing tool (50) applies upward pressure against the spring tensioning mechanism (70) and causes the pressing tool to rise upwardly as the tool rotates. When the pressing tool (50) has moved upward a predetermined distance, a shut-off switch of a portioning control mechanism (80) is activated, ceasing the further addition of ground coffee. A volume portioning adjustment mechanism (84) modifies the amount of ground coffee that is compacted into the delivery filter.