Compact manual coffee grinder machine, for domestic use

A portable vertical manual coffee grinder for domestic use comprising:

• a central body having a grinding chamber and a reservoir and an inlet opening, the reservoir adapted to receive coffee beans, the inlet opening facing upwardly and adapted to receive the coffee beans;
• a closing cover positioned over the inlet opening;
• a container removably joined under said central body, said container adapted to receive ground coffee beans;
• an external actuating lever having a lever am with a rotatable handle, said external actuating lever having a configuration of a crank;
• a grinding unit joined to said external actuating lever, said grinding unit integrated into said grinding chamber, said grinding unit having a pair of opposite and reciprocally spaced elements with a hollow space therebetween, said grinding unit adapted to crush the coffee beans in the hollow space, the pair of opposite and reciprocally spaced elements having a first grinder fixed in the grinding chamber and a second grinder that is connected to said external actuating lever by a rotation shaft, wherein the rotation shaft and said external actuating lever and said grinding unit are coaxially rotatable about a common rotation axis;
• a rotating ring nut that spaces the first grinder from the second grinder, said rotating ring nut adapted to allow a user to adjust a grain size of the coffee powder, wherein the common rotation axis is horizontal, said grinding unit crossing said central body transversely, said actuating lever being on a side of said central body and connected to one end of said grinding unit, said rotating ring nut being positioned at an opposite side of said central body, wherein the first grinder and the second grinder are opposed discs that are flat and vertical, the hollow space being vertical, wherein the first grinder is mounted on a flange fixed to said central body, the second grinder being connected to a grinder-holder element that is fixed to the rotation shaft and mounted on ball bearings, wherein the flange comprises an inlet conveyor adapted to introduce the coffee beans between the first grinder and the second grinder by gravity directly from the reservoir thereabove, a propeller piece being connected to the rotation shaft below the inlet conveyor, the propeller piece adapted to remove the coffee beans from the reservoir so as to push and distribute the coffee beans into the hollow space, wherein the first grinder and the second grinder grind the coffee beans into the coffee powder and then drop into said container directly below the hollow space with assistance by the grinder-holder element and the propeller piece.