The second transmission linkage has a degree of {HEAD ~ freedom} with respect to a bearing support which allows shifting due to deflections of the feeler roller mounted on the second transmission linkage as a result of a relative movement between the control cam and {TAIL ~ the feeler roller} 
The second transmission linkage has a degree of { HEAD ~ freedom } with respect to a bearing support which allows shifting due to deflections of the feeler roller mounted on the second transmission linkage as a result of a relative movement between the control cam and { TAIL ~ the feeler roller }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL