means for controlling opening and closing of throttle {HEAD ~ means} regulating {TAIL ~ supply} of fuel to said reciprocating internal combustion engine 
regulating
means for controlling opening and closing of throttle { HEAD ~ means } regulating { TAIL ~ supply } of fuel to said reciprocating internal combustion engine
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH