Abstract: A tape wound coil is provided, for use in magnetic repulsion punching, that has a plurality of slits therein which allow circulation of coolant therethrough. This coil is made of thin copper foil, or the like that is treated with an epoxy, for electrical insulation between the windings, and then wound around a center post. The face of the coil is machined smooth, whereas a counter bore is machined into the back of the coil such that a portion of the center post and the inner most windings are removed. Radial slits are then machined into the back of the coil, which will allow for the coolant flow. Thus, a coil for use in magnetic repulsion punching is provided which maximizes the capacity for carrying electrical current and increases the winding density exhibited by conventional M-R coils. Further, the coil of the present invention will withstand high repetition mechanical shear forces created as a result of the large amount of electrical current pulsing through the windings.

Abstract: Disclosed is an alignment assembly for accurately aligning separate sets of documents being inserted into the assembly from transversely oriented feed paths, the alignment assembly including a pivotally mounted document gate which provides not only guide passageways for documents entering the assembly, but also an alignment edge for accurately positioning and aligning documents within the assembly in document clamps adapted to transport the documents from the alignment assembly to a print station and thereafter to an exit transport assembly. The movement of documents inserted in the alignment assembly is effected by a document aligner assembly comprising cooperating vibratory document transporters and pivotally mounted back-up rollers for simultaneously urging the documents into the clamps and against the alignment edge of the document gate.

Abstract: Disclosed is document feed apparatus including a cooperating roller assembly for separating and feeding individual documents from a stack to utilization apparatus, the roller assembly including rotatably powered separator, restraint, and picker rollers, the picker roller being mounted to pivot out of and into engagement with the document stack. Control means responsive to each document passing through the roller assembly lifts and drops the picker roller from and into engagement with the stack, the momentum of the dropping picker roller assembly effective to switchably actuate motive means for incrementally elevating a vertically movable document support platform to continually reposition the top of the document stack in alignment with the roller assembly.