Web lapping apparatus

• US 3,338,575 A
• Filed: 03/10/1965
• Issued: 08/29/1967
• Est. Priority Date: 03/10/1965
• Status: Expired due to Term

• Current Assignee: Daniel Nystrand Ernst, Harvey J. Spencer
• Original Assignee: Daniel Nystrand Ernst, Harvey J. Spencer
• Inventors: DANIEL NYSTRAND ERNST, Spencer, Harvey J.
• Application Number:
  US04/438,560
• Time in Patent Office: 902 Days
• US Class Current: 270/59
• CPC Class Codes: B65H 29/243 Suction rollers
• CPC Class Codes: B65H 29/6618 upon transfer from a first conveyor to a second conveyor advancing at slower speed
• CPC Class Codes: B65H 35/08 from or with revolving, e.g. cylinder, cutters or perforators
• CPC Class Codes: B65H 45/24 Interfolding sheets, e.g. cigarette or toilet papers

Claims

1. APPARATUS FOR WEB LAPPING, COMPRISING A FRAME, A CUTTING ROLL ROTATABLY MOUNTED ON SAID FRAME, SAID CUTTING ROLL BEING EQUIPPED WITH LONGITUDINALLY-EXTENDING VACUUM PORT MEANS IN THE SURFACE THEREOF FOR ADVANCING A WEB WITH SAID CUTTING ROLL IN PARTIAL WRAPPING ENGAGEMENT THEREWITH, KNIFE MEANS ON SAID FRAME OPERABLY ASSOCIATED WITH SAID CUTTING ROLL FOR TRANSVERSELY SEVERING SAID WEB ALONG LONGITUDINALLY SPACED-APART LINES TO PROVIDE A SUCCESSION OF DISCRETE SHEETS, A RETARD ROLL ROTATABLY MOUNTED ON SAID FRAME IN PARALLLEL, SIDE-BY-SIDE RELATION TO SAID CUTTING ROLL, SAID RETARD ROLL BEING EQUIPPED WITH LONGITUDINALLY-EXTENDING VACUUM PORT MEANS IN THE SURFACE THEREOF FOR TRANSFERRING SAID WEB SHEETS FROM SAID CUTTING ROLL, AND VACUUM MEANS INTERPOSED ADJACENT THE PATH OF A SHEET BEING TRANSFERRED FROM SAID CUTTING ROLL TO SAID RETARD ROLL FOR DISPLACING THE TRAILING PORTION OF SAID SHEET, AND MEANS FOR ROTATING SAID RETARD ROLL AT A SURFACE SPEED SLOWER THAN THE SURFACE SPEED OF SAID CUTTING ROLL.