{HEAD ~ The present machine} enables {TAIL ~ a single roofer} to distribute the plates and also to secure the plates in position as desired, without need for an additional worker to distribute the plates in a separate operation from the step of securing the plates 
enables
{ HEAD ~ The present machine } enables { TAIL ~ a single roofer } to distribute the plates and also to secure the plates in position as desired , without need for an additional worker to distribute the plates in a separate operation from the step of securing the plates
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH