{HEAD ~ An inclined ramp} is located on the loading station; a carrier is movably mounted on the ramp so as to be capable of being elevated from adjacent to the lower end of {TAIL ~ the ramp} to adjacent to the upper end of the ramp 
{ HEAD ~ An inclined ramp } is located on the loading station ; a carrier is movably mounted on the ramp so as to be capable of being elevated from adjacent to the lower end of { TAIL ~ the ramp } to adjacent to the upper end of the ramp
HEAD HEAD 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 TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH