Pulley systems with weights and a beamed roof
Rope, weight and pulley arrangements above a square timber-framed roof
The upper sheet sets out several pulley arrangements, each hoisting a bell-shaped weight labelled 88, with the note explaining that the study concerns rope, weight and pulleys. The labelled points a-b, c-d and m-n identify the pulley pairs. Below, a small plan shows a square roof carried on a wooden frame of crossed beams.
On this page
Rope-and-pulley weight systems (a-b, c-d, m-n)
A row of pulley arrangements each suspends a weight marked 88, contrasting single and compound sheaves. The note states that the study treats of rope, weight and pulleys, tagging the pairs a - b, c - d and m n.
Square roof on a timber frame
A small plan shows a square roof carried on a wooden frame, the diagonals marking the crossed beams. The caption explains it is a roof supported on a square wooden frame, that is, of beams.