Nutcracker has cylindrical case, in which piston is mounted which is pushed down to crack nut, spacer rings fitted on piston allowing length of its stroke to be regulated according to type of nut being cracked

摘要

The nutcracker has a cylindrical case (1), in which a piston (3) is mounted which is pushed down to crack the nut. Spacer rings (6, 6") fitted on the piston allow the length of its stroke to be regulated according to the type of nut being cracked.