| 摘要 |
<p>Seaming head which essentially comprises a tubular head means (2) subjected to a downward axial motion promoted by hydraulic, pneumatic and the like means, an expansible pinching means comprised of arms (3), and a plunger means (7) which will be caused to seam a cap (9) when radial protusions (8) of this plunger means (7) are driven with the head (2) during the downward motion of the latter.</p> |
