Two pairs of like bracing members hold the end supports of the support rollers, the bracing members of each pair having one end pivoted to a respective hydraulic cylinder for the pistons and {HEAD ~ the end supports} of the other support roller being detachably fixed to {TAIL ~ the other bracing member ends} 
Two pairs of like bracing members hold the end supports of the support rollers , the bracing members of each pair having one end pivoted to a respective hydraulic cylinder for the pistons and { HEAD ~ the end supports } of the other support roller being detachably fixed to { TAIL ~ the other bracing member ends }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL