Abstract: Apparatus for partially or wholly separating individual coils from batches of interengaged coils comprising supporting structure for receiving the batches of coils standing upright, columnar springs supporting the structure, vibrators fastened to the supporting structure, and controls for controlling the amplitude and frequency of vibration of the vibrators.

Abstract: A jaw for holding a coil in a coil transfer apparatus during movement from one position to another designed to permit the coil to be rotated about its longitudinal axis while held by the jaw.

Abstract: Apparatus for receiving a row of spaced coils in which the coils are at a predetermined spacing and transferring them to a coil assembly machine at a different spacing.

Abstract: Apparatus for separating coils from groups of coils and orienting them for presentation in-line correspondingly oriented about their longitudinal axes to a coil assembly machine, comprising in parallel relation a plurality of conveyors corresponding in number to the number of in-line coils to be presented to the assembly machine, for moving batches of interengaged coils along a predetermined path and for partially separating the coils as they travel therealong, and a gripper assembly associated with each conveyor arranged to successively grasp and complete separation of the leading coil of the group of coils while the remaining coils of the group are withheld, position it on a turntable for rotation about its vertical axis so that its knot is in a predetermined position of orientation, invert the separated coil after it has been rotated about its vertical axis and by such inversion present it to an assembly machine.

Abstract: A rotary knotting head for a wire tying machine containing an axial bore and radial slot to the bore for receiving the wire and a wire wrap surface spaced from the bore at the opposite side of the radial slot characterized in that wear resistant inserts are set into faces of the wrap surface and the side of the slot opposite the wrap surface which extend from the bottom of the radial slot radially towards the open end thereof and are of substantially the same area.