Mechanical studies: ribbed conical device and drum on a frame
A sheet of lightly worked device sketches; the transcription records the leaf carries no writing
The leaf is filled with mechanical sketches: a tall pronged rod, a ribbed conical structure suspended above the centre, and a cylindrical drum mounted on a slanted frame, surrounded by several small component studies, all laid over faint compass-drawn arcs. The editorial note records that the sheet bears no writing. The drawings are lightly worked and their exact purpose is not stated in the bundle.
On this page
Drum mounted on a slanted frame
A cylindrical drum or roller rests on an inclined frame at the lower right, with what appears to be a crank or winding element at one end. Smaller sketches nearby repeat parts of the same assembly.
Ribbed conical structure and pronged rod
Above the centre a tall rod with forked prongs rises over a conical, ribbed structure whose staves radiate from a hub. The form is drawn faintly against several compass-struck arcs.