Bobbin for rotatable, releasable attachment to identical bobbins

A bobbin for winding and dispensing filamentary material and adapted for releasable, side-by-side connection to identical bobbins on each side, said bobbin comprising:

• a) a substantially flat disc having a central axis, an outer perimeter and first and second sides;
• b) substantially cylindrical wall means extending outwardly from said disc first side to a first free end and having an outer surface tapering inwardly from a first diameter at said first end toward said disc;
• c) substantially cylindrical hub means extending outwardly from said disc second side to a second free end and having an inner surface tapering inwardly from a second diameter at said second end toward said disc;
• d) drum means extending outwardly from said disc second side in spaced, surrounding relation to said hub means, said drum means having a substantially cylindrical, outer surface inwardly of said disc outer perimeter upon which said filamentary material may be wound;
• and
• e) said second diameter being slightly smaller than said first diameter to provide snap-fit engagement means on said wall means of a first bobbin and said hub means of a second, identical bobbin for releasable engagement upon axial movement of said first bobbin with said second bobbin coaxially aligned therewith and said first side of said disc of said first bobbin facing said second side of said disc of said second bobbin.