A jogger having {TAIL ~ a jogger plate} is floatingly supported by a four bar linkage swingably mounted upon {HEAD ~ a support post} 
A jogger having { TAIL ~ a jogger plate } is floatingly supported by a four bar linkage swingably mounted upon { HEAD ~ a support post }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD