Winch-drums on stands and the loose bore for a turning weight
Two drum-and-cord apparatuses over a basin, with a note that the hole 'a' must be wide to let a weight spin
The lower half of the sheet shows two related apparatuses in which a cord-wound drum on a tall stand hangs a weight over a shallow basin. A caption explains that for the weight to spin on its own axis the hole marked a must be 'latino', that is, wide or loose. Scholarly tags note that here a single cord bears a doubled load and that the load is distributed over two cords. A large toothed-and-sprung mechanism across the top of the leaf is drawn but not transcribed.
On this page
A wide bore (hole a) lets the suspended weight rotate
The apparatus at lower left is labelled a. The note states that if one wants the weight to turn on itself, the hole marked a must be 'latino', that is, wide, so the shaft can spin freely within it.
Load carried and shared by the drum's cords
The paired drum-and-cord rigs over the basin study how the hung weight loads its supporting cords. The sheet's tags observe that the cord feels a doubled load, weight plus resistance, and that this load is distributed across two cords.