Apparatus for cutting an enveloped body

An apparatus for shaping an enveloped body comprising:

• a housing having a plurality of edges defining an opening having a central portion;
• a plurality of cutting members slidably disposed on said housing, each of said plurality of cutting members comprising:
• opposing upper and lower surfaces;
• a planar side surface slidably disposed against one of the plurality of edges of the housing adjacent the opening;
• a convex side surface adjacent the planar side surface and facing the opening, the convex side surface having a convex cross-section defining a central high part;
• a beveled side surface formed between said planar side surface and said convex side surface, said beveled said surface being formed at an angle relative to said planar side surface and said convex side surface;
• and
• a concave side surface adjacent the convex side surface and opposite said planar side surface and having a concave cross-section complementary to the convex cross-section of said convex side surface, defining a central low part;
• wherein the convex side surface and the convex side surface form ridgelines with said convex side surface, the convex side surface and the concave side surface defining top and bottom edge points at the intersection of the upper and lower planar surfaces and the convex side surface and the concave side surface;
• wherein the convex side surface of each of a plurality of cutting members abuts the slides against the concave side surface of an adjacent one of the plurality of cutting members when the planar side surface of each of said plurality of cutting members slides against one of the plurality of edges so as to open and close the opening to cut the enveloped body passing therethrough, and
• wherein the central high part of all the plurality of cutting members abut each other when the plurality of cutting members slide against each other to close the opening, and the upper and lower edge points of all the plurality of cutting members abuts each other when the cutouts of all the plurality of cutting members abut their corresponding edges of the housing.