San Francisco : Architect and Engineer, Inc · leaf 141
e loft block well over block A thence over sheave AA in headblock D. From the head block it goes to the pin rail. Since each linein the set has a separate set of sheaves it may be seen that each may beseparately controlled. This makes it possible to trim. Now the maximum span between each line is… … r,n 9
Architecture · Building
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Cosmographia Francisci Mavrolyci Messanensis Sicvli : in tres dialogos distincta, in quibus de forma, situ numerʹoq[ue] tam coelorum q[uam] elementorum, alijsq[ue] rebus ad astronomica rudimenta spectantibus satis disseritur (1543)](https://img.insideoutlibrary.com/img/200/ia-cosmographiafran00maur-177-0.webp)
