主权项 |
1. A guide adapted to be positioned for encirclement by a helical formation of rod rings free falling from the delivery end of a conveyor, said guide comprising:
a vertically projecting mandrel terminating at its upper end in a nose cone, said nose cone being non-rotatable and having a horizontal profile when viewed from above defined by a plurality of angularly spaced elements, each of said elements having an outer edge separated by a radial distance from a central axis of said mandrel; and adjustment means for changing said horizontal profile by increasing the radial distance of at least one of the said elements. |