Illustrated Companion to the Latin Dictionary/Trochlea

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

TROCH'LEA (τροχιλέα). A contrivance for the multiplication of mechanical power in raising weights, consisting of a case with a set of blocks or pullies (orbiculi) fitted into it. (Vitruv. x. 2. 1. Cato, R. R. iii. 5. Lucret. iv. 903.) See the illustration s. TRISPASTOS, which exhibits a case furnished with three pullies.