Arrangement for delivering predetermined quantities of liquid and solid material

Claim 1

Arrangement for delivering a predetermined amount of a freely running material which comprises a measuring chamber having a first conically shaped valve seat beneath an upper inlet opening connected to a supply chamber for the free running material and a second conically shaped valve seat above a lower outlet opening for the free running material, and a control member comprising a first elastic sealing disc adapted to flexibly cooperate with the first conically shaped valve seat and a second elastic sealing disc adapted to flexibly cooperate with the second conically shaped valve seat, said first and second sealing discs united in fixed position by a rod member, said control member adapted to be actuated from outside the measuring chamber and to reciprocate within the measuring chamber between a first position wherein the second elastic sealing disc seals the outlet opening and the inlet opening is held open, a second position wherein the first elastic sealing disc seals the inlet opening and the outlet opening is held open, and an intermediate position wherein both the elastic sealing discs are held in sealing abutment with their respective conically shaped valve seats.