A ratchet wheel is connected to {HEAD ~ the spool} and is located {TAIL ~ adjacent the first sidewall} 
A ratchet wheel is connected to { HEAD ~ the spool } and is located { TAIL ~ adjacent the first sidewall }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL