Into the axle is mortised a toothed drum , whose teeth are fixed in the side of the rim . These teeth turn a second drum of rundles , which are made of very hard material . This drum surrounds an iron axle which has a pinion at the bottom and revolves in an iron cup in a timber . At the top of the…
e-rara · Eisenbibliothek Schlatt · No known copyright restrictions. Free to use for anything.
![An illustration from M. Vitrvvii viri svae professionis pertissimi De architectvra libri decem, ad Avgvstum Cæsarem accuratiss. conscripsit & nvnc primvm in Germania qva potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati (1543)](https://img.insideoutlibrary.com/img/200/ia-mvitrvviivirisva00vitr-294-98.webp)
