Two levers pivotally mount the pressing roller on a housing which, in turn, is detachably mounted on a support, the housing being extremely flat and bounding {HEAD ~ a chamber} which has {TAIL ~ an open end} 
Two levers pivotally mount the pressing roller on a housing which , in turn , is detachably mounted on a support , the housing being extremely flat and bounding { HEAD ~ a chamber } which has { TAIL ~ an open end }
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 HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL