{HEAD ~ A collapsible trailer} to be towed by a bicycle has front and rear U shaped members pivotally mounted on {TAIL ~ an axle} to the ends of which wheels can be attached 
{ HEAD ~ A collapsible trailer } to be towed by a bicycle has front and rear U shaped members pivotally mounted on { TAIL ~ an axle } to the ends of which wheels can be attached
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH