poppet head

poppet head

n
(Mining & Quarrying) the framework above a mining shaft that supports the winding mechanism
References in periodicals archive ?
THE OLD DAYS: A Ravenswood street scene around 1900, probably photographed from the London North poppet head.
For greater efficiency, the rMAXTM is engineered with contoured valve seats, operating with specially-shaped poppet heads to provide maximum flow through the valve seat and guard.
For greater efficiency, the valve is engineered with contoured valve seats, operating with specially-shaped poppet heads to provide maximum flow through the valve seat and guard.