Machine for automatically measuring portions of dough

Machine for automatically measuring dough portions comprising a circular tank (1) placed on a cylindrical and hollow body (2) placed on a supporting table, which tank (1) communicates with the body (2) by means of a large opening (4), which body (2) has its rear end closed by a circular piece (5) possessing a shoulder and comprising a center hole (6) for the passage of a shaft (8), which carries inside the body (2) a piston (7) and further forward an ejecting piston (9), which shaft (8) passes on the outside through a coil spring (26), and has its rear end which carries a spring retainer (25), on which moves a sheath 34, which limits the forward movement of the ejecting piston (9), characterized by that a chamber (3) of the body (2) is defined in the back by the ejecting piston (9) and in the front by a measuring piston (15), which moves back into a jacket (13) under the pressure of the dough which accumulates in said chamber (3), and the rearward movement of the measuring piston (15) triggers by means of a pilot valve (16) the entry of compressed air through an opening (19) placed in the back of the body (2) in a chamber (20), which causes a forward displacement of the piston (7) of the shaft (8) and of the ejecting piston (9), which ejecting piston (9) detaches a dough portion, then pushes it into a passage (17), the latter being freed from the measuring piston (15), which is carried along by the rearward movement of the body of a jack (18) which follows the movement of its support (22) driven by a bar (23), which connects a mobile assembly positioned in the back of the body (2) and by the rearward movement of the piston rod (54) of the same jack (18), both movements adding their speed.