| CPC B65D 90/08 (2013.01) [B60P 3/221 (2013.01); B60P 3/2225 (2013.01); B65D 88/127 (2013.01); B65D 90/024 (2013.01); B65D 88/06 (2013.01); B65D 90/16 (2013.01)] | 14 Claims |

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1. An apparatus for manufacturing an obround shell, the apparatus comprising:
a cradle comprising a first set of ring segments, each ring segment of the first set of ring segments having a semi-annular shape, wherein the first set of ring segments are rigidly mounted on at least one longitudinal frame member to longitudinally space and align concentrically the first set of ring segments to form a semi-cylindrical frame;
a second set of ring segments, each ring segment of the second set of ring segments having the semi-annular shape, the second set of ring segments corresponding respectively pairwise to the first set of ring segments;
for each ring segment of the first set of ring segments, alignment guides extending from respective outer edges of end faces of the ring segments; and
constricting means provided at and operable to couple and to variably space respectively opposable ends of the corresponding pairs of the first set of ring segments and the second set of ring segments to form an obround frame.
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