Single Pointed Member Patents (Class 227/35)
  • Patent number: 4376504
    Abstract: A machine for the attachment of buttons provided with shanks to articles provided with buttonholes, having a lower tool which holds a button upper part and moves relative to the lower tool towards the latter. A device is disposed in front of the upper tool for widening the buttonhole to approximately the clear width of the shank to be seated through the buttonhole onto the underlying layer of material.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: March 15, 1983
    Assignee: Firma Schaeffer-Homberg GmbH
    Inventor: Herbert Birkhofer