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