IPC Engine Fig 64c - Piston/Drum Assembly Isometric Schematic Drawing

This document is an untitled, unlabeled line-art engineering illustration, apparently one figure ('Fig 64c') from a multi-page set of engine-concept drawings uploaded alongside other 'IPCengine' figures and pages of a Chatterton patent (GB988378) on hyper-expansion engines. The drawing shows, in isometric view, a large cylindrical component with several ring grooves around its circumference — resembling a piston or drum — attached at its center hub to a shaft fitting. Behind it sits a large faceted (octagonal-edged) housing or block, and multiple stepped cylindrical rods or pins project outward from the face of the housing around the drum. There is no text of any kind: no title block, dimensions, part numbers, torque specs, legend, or applicability statement. A reader can learn only the general geometry and arrangement of this mechanical assembly; without labels, the exact function of each element must be inferred from the accompanying figures in the same album. The document contains no year, make, model, or engine identification and therefore neither confirms nor contradicts the uploader's attribution to a 1969 Ford Fairlane.