looping-the-loop

"The huge looping-the-loop machine, empty, but going full blast over his head in this dead section of the fair, suggested some huge evil spirit, screaming in its lonely hell, its limbs writhing, smiting the air like flails of paddlewheels. (...)
'-Mistair. Money money money.' 'Mistair! Where har you go?'

M. Lowry, Under the Volcano