| 摘要 |
A device for simultaneously obtaining the tapering and the flanging of the bodies of metal cylindrical cans, comprising in combination one pair of spindles symmetrically located on a common axis, capable of revoluting about said axis and destined to slide along said axis in order to enter into the worked body and to issue from the body itself when the operation is ended, a negatively shaped surface on the inner ends of said spindles reproducing the shape to be obtained in said cylindrical body, a pair of shaping collars idly mounted on said spindles and provided in their inner surface with the positive shape corresponding to that of the spindles, means for holding centered said collars and for allowing a progressive radial displacement thereof, so as to deform the said interposed cylindrical body, according to the aforesaid shape.
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