Patent ID: 7686753

Claim:
A bottom finishing station for a cup making machine comprising: a mandrel for holding a sidewall blank and a bottom blank such that a flap portion of the sidewall blank is folded around a lip of the bottom blank; a seam clamp positioned adjacent and movable relative to the mandrel, the seam clamp being engageable with overlapped edges of the sidewall blank to form a side seam; and a clamp ring selectively movable into engagement with a bottom end of the seam clamp, the clamp ring including an annular wall forming a recess for receiving a rotatable tool which presses against the flap portion and the lip to form a bottom seal, wherein part of the seam clamp protrudes into the clamp ring, and part of the clamp ring protrudes into the seam clamp to form a bridge acting against the overlapped side seam at the top of the lip, and the clamp ring includes a cam roller assembly located thereon and engageable with a lower portion of the seam clamp that acts against the side seam at the top of the lip wherein the cam roller assembly is mounted on a bracket held by fasteners to a peripheral edge of a planar top surface of the clamp ring and includes a cam roller engageable with an adjustable bolt threaded into a member on the lower portion of the seam clamp.