Abstract: Apparatus for trimming away the open end of an untrimmed can body using a plurality of can trimming apparatuses mounted on a rotating turret wherein each can trimming apparatus has a rotatable first shaft having a radially outer or inner knife and a knurling roller mounted thereon for rotation therewith and a second rotatable shaft having a radially inner or outer knife and a knurling segment mounted thereon for rotation therewith and wherein, for each complete revolution of the turret, the first shaft makes three complete revolutions and the second shaft makes one complete revolution. Also, an arrangement of gears is provided for rotating the firs and second shafts.

Abstract: The invention is directed to the punch on the reciprocating ram of a can body making machine wherein the punch is mounted on one end portion of the reciprocating ram so that the punch is capable of rotational movement relative to the reciprocating ram.

Abstract: Apparatus and method for trimming away a portion of the open end of an untrimmed can body to form a trimmed can body and a trimmed away portion using a plurality of can trimming apparatuses which are mounted on a turret which is secured to a main drive shaft for rotation therewith. Each of the can trimming apparatus has mechanisms for cutting the untrimmed can body to form a trimmed can body and a trimmed away portion; for separating the trimmed can body from the trimmed away portion by moving both in one axial direction and then only the trimmed can body in the opposite axial direction; for loading untrimmed can bodies onto each can processing apparatus and for unloading trimmed can bodies therefrom and for cutting, knurling and disposing of the trimmed away portions.

Abstract: A collapsible mandrel for use in holding a can body in a process wherein a portion of the can body having uneven edges on the open end thereof is trimmed away is provided and comprises a hollow support member having a longitudinal axis and mounted at a relatively fixed location and having a plurality of axially and radially outwardly extending resilient fingers integral therewith and an elongated hollow member mounted on the hollow support member to provide for linear movement therebetween. The elongated hollow member has a bearing surface in contact with the resilient fingers so that movement of the elongated hollow member varies the radially outwardly extent of the resilient fingers so that can bodies having inner peripheral surfaces of differing inner diameters may be readily moved over the resilient fingers but wherein the resilient fingers will exert a sufficient force thereon so that the can body will rotate with the resilient fingers.