Power may be applied to any of the crankshafts by a motor coupled to the crankshaft or power may be applied to any crankpin by {HEAD ~ a pitman} connecting {TAIL ~ the piston} of an internal combustion engine or fluid motor to the crankpin 
connecting
Power may be applied to any of the crankshafts by a motor coupled to the crankshaft or power may be applied to any crankpin by { HEAD ~ a pitman } connecting { TAIL ~ the piston } of an internal combustion engine or fluid motor to the crankpin
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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH