Of Moving Work Patents (Class 493/369)
  • Patent number: 4398903
    Abstract: A handle bag of a predetermined width is made from a synthetic-resin tube. This tube is fed at a predetermined feed speed through a cutting station where it is spanned over a cutting drum formed with an endless circumferentially extending and undulating cutting groove. A blade engages radially inwardly through this groove so that as the tube passes over the drum it is subdivided transversely into a pair of tube halves. The blade reciprocates back and forth transversely of the tube in the cutter groove by rotation of the drum at such a rate as to form on the confronting cut edges of the tube halves interfitting and staggered handle flaps. One of these tube halves is then detoured through a distance equal to an odd whole-number multiple of half of the bag width and then is realigned with the other tube half with the flaps in transverse alignment. The two tube halves are then seamed together simultaneously.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: August 16, 1983
    Inventor: Hans Lehmacher
  • Patent number: 4279184
    Abstract: At least three crosscutters for a web of corrugated board include a first crosscutter for the original width of the web and second and third crosscutters for crosscutting slit subwebs having reduced widths as compared to the original web width. A module formed by the second and/or third crosscutters with less power and drive requirements is located in the same vertical plane as the crosscutter rolls of the first crosscutter or laterally displaced therefrom.
    Type: Grant
    Filed: October 10, 1979
    Date of Patent: July 21, 1981
    Assignee: Universal Corrugated Box Machinery Holding AG
    Inventor: Cees J. Smolders
  • Patent number: 4247349
    Abstract: Panels of plastic film are delivered to a perforated vacuum drum which has a knife edged die mounted on its surface. Each panel is laid over the die and rotates with the drum into rolling contact with an anvil roll which firmly presses the film panel against the knife edge to cut the panel. After cutting, the film panel continues to rotate with the drum to a position wherein it registers with a blank having a cut-out opening therein which is covered by the film panel. The areas of the blank surrounding the cut-out opening are covered with an adhesive material which causes the film panel to remain adhered to the blank. The vacuum drum continues to rotate and, after bonding of the panel to the blank, the drum releases the vacuum draw on the panel. The cuts formed in the plastic film panels can be straight lines, lines of perforations, or cut-outs bounding areas which are removed from the panel.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: January 27, 1981
    Assignee: American Can Company
    Inventors: Robert M. Detert, Hubert J. Germiat, William M. Kelly, Jr.