| 摘要 |
A counterpiece (14) to support the cans (5) is located at the bottom of the housing (2). The housing itself is formed by four side walls (13), a smooth slopping bottom wall (6), a top opening, an aperture (4) in one side wall (13) for insertion of cans on to the bottom wall. When inserted, a section of the lower edge of the cans rests against the slopping bottom wall, whislt at the same time, the cans are maintained upright by the side walls. The bottom wall (6) slopes forwards towards the side wall aperture (4), and the piston (1) is a long solid body moved up and down in the housing through the upper opening, and has a length greater than the height of the housing. Its cross-section takes the form of a truncated V with two parallel side edges of different lengths. it also has two converging equal side edges, and its cross-section corresponds to that of the housing. The piston has a mooth lower striking surface (7) parallel with the inclined bottom wall (6). "iking surface (7) parallel with the |
