The use of partial information on weights in multicriteria decision problems

An improved apparatus for winding yarn or thread onto a bobbin to form a yarn package is described which comprises a support assembly for maintaining uniform pressure between the drive roll and yarn package during winding so that a yarn package having greater uniformity is produced. The described apparatus further includes an improved take-up roll having a braking means cooperating with a yarn package or bobbin release means, whereby the yarn package cannot be released from the take-up roll until the take-up roll has ceased rotation. Also described is a doffing mechanism associated with the winder for doffing yarn packages from the take-up roll after they are released by the package release means.