In an X-ray photography apparatus of this invention, an X-ray tube and an image receiving device are attached to two tilting members which are each rockably supported on the distal end portion of a traveling support frame telescopically protruding parallel to a horizontal main axis from a rotating base...http://www.google.com/patents/US4412346?utm_source=gb-gplus-sharePatent US4412346 - X-Ray photography apparatus
