Patent from 1965 by G. B. Blonsky et al. It is a schematic for a centrifuge. A large circle encompasses a ballast and a stretcher with a person strapped flat to it. The person is strapped at the head, legs and feet with legs wide. A net is over the pelvis. There is a control deck.
https://s3.masto.ai/media_attachments/files/110/938/919/088/592/852/original/3ac817426860195b.png