De materia trientali scapos quattuor, duos transversarios interpositos, quanta longitudo scapi fuerit, complectet et conpeget et ferreos cnodacas uti subscudes in capitibus scaporum inplumbavit et armillas in materia ad cnodacas circumdandos infixit; item bucculis tigneis capita religavit; cnodaces autem in armillis inclusi liberam habuerunt versationem tantam; ita, cum boves ducerent subiuncti, scapi versando in cnodacibus et armillis sine fine volvebantur.
He framed together four wooden pieces of four-inch timbers: two of them being cross-pieces as long as the stone column. At each end of the column, he ran in iron pivots with lead, dovetailing them, and fixed sockets in the wood frame to receive the pivots, binding the ends with wood cheeks: thus the pivots fitted into the sockets and turned freely. Thus when oxen were yoked and drew the frame, the columns turned in the sockets with their pivots and revolved without hindrance.
final_alignments\Vitruvius_Architecture_Book_10.json