A second set of sprags on {HEAD ~ the intermediate member cooperates} with clutch teeth on a fixed member to prevent {TAIL ~ retrograde movement} 
A second set of sprags on { HEAD ~ the intermediate member cooperates } with clutch teeth on a fixed member to prevent { TAIL ~ retrograde movement }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL