{HEAD ~ A dispenser} 9, in which the traction member forms a fork comprising two branches that are interconnected via {TAIL ~ a common web} 
{ HEAD ~ A dispenser } 9 , in which the traction member forms a fork comprising two branches that are interconnected via { TAIL ~ a common web }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL