Patent ID: 6260331
Filing Date: 2001-07-17
Classification: B29C,B65B

Abstract:
In an apparatus for making a series of pocketed springs individually contained in pockets defined between two plies of a strip of sheeting by the spaced transverse seaming of said plies, wherein the apparatus includes:a support,closely spaced walls on said support defining between said walls a planar path for the movement of said strip longitudinally thereof through the apparatus along said path,drive means on said support engageable with said strip to advance the strip along said path,a spring inserter on said support for inserting axially compressed springs between the plies of said strip with their axes perpendicular to said plies and in spaced relation longitudinally of said strip,longitudinal seaming mechanism on said support for joining the edges of said plies together upstream of said drive means to form a sleeve about said compressed springs, andtransverse seaming mechanism on said support for defining said pockets within said sleeve between successive transverse seams,the improvement whereinthe drive means comprises a pair of rolls engaging opposite faces respectively of said strip at the exiting end of said planar path to draw said strip forward along said path to release said compressed springs for axial expansion against said plies within said sleeve,said transverse seaming mechanism being located a predetermined distance downstream from said pair of drive rolls and oriented to make said transverse seams perpendicular to the plane of said path so as to include therein the longitudinal seaming of the sleeve between the ends of the transverse seams, and between the ends of the expanded spring captured in the pocket formed around each expanded spring by successive transverse seams.