Brewing head for coffee portion capsules of an espresso machine

A brewing head of an espresso machine, comprising:

• a lower brewing head part having a first recess and a coffee discharge conduit formed therein;
• an upper brewing head part having a second recess and a hot water conduit formed therein, said upper brewing head part being pivotable relative to said lower brewing head part to a closed position in which the first recess and the second recess form a receptacle that receives a coffee portion capsule, and to an opened position in which the first recess and the second recess are separated from each other so that the coffee portion capsule can be inserted or discharged;
• a plurality of hollow needles attached to said upper brewing head part, and being in fluid communication with the hot water conduit, said needles projecting into the receptacle and being penetratable into a top side of the coffee portion capsule for delivering hot water from the hot water conduit into an interior of the coffee portion capsule when said upper brewing head part is in the closed position;
• a pyramid plate located within the first recess and having a plurality of projections formed thereon, and a plurality of discharge holes formed therethrough that communicate the receptacle with the coffee discharge conduit, said projections punching holes through a lower side of the coffee portion capsule when the hot water delivered into the interior of the coffee portion capsule is at a pressure that exceeds a resistance of the coffee portion capsule to tearing, so that the hot water together with dissolved coffee components are discharged through the discharge holes and the coffee discharge conduit, respectively;
• ejector means located within said upper brewing head part for ejecting a used coffee portion capsule from the hollow needles when said upper brewing head part is in the opened position;
• a housing;
• a pivoting arm having one end pivotably connected to said housing and another end connected to said upper brewing head part, said pivoting arm being pivotable to pivot said upper brewing head part to the closed and opened positions, said pivoting arm having a lifting pin connected thereto;
• and
• expeller means comprising an expeller implement that receives the coffee portion capsule and positions the coffee portion capsule within the receptacle, and an expeller arm having one end connected to said expeller implement and another end pivotably connected to said housing, said expeller means engaging with said lifting pin when said pivoting arm is pivoted to move said expeller means in an upward direction, so that the coffee portion capsule within said expeller implement can fall from said expeller implement for disposal.