The assembly 5 in which the latch member cannot be disengaged without raising one wheel of each set off the ground by pressing the lever {HEAD ~ means} into {TAIL ~ said fulcrumming engagement} 
into
The assembly 5 in which the latch member can not be disengaged without raising one wheel of each set off the ground by pressing the lever { HEAD ~ means } into { TAIL ~ said fulcrumming engagement }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL