{TAIL ~ at least one reinforcing frame rib}, attached to said stationary cylindrical casing between said pair of {HEAD ~ opposite gables}, 
{ TAIL ~ at least one reinforcing frame rib } , attached to said stationary cylindrical casing between said pair of { HEAD ~ opposite gables } ,
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH