Verge Escapement Labelled

Autor:

Henry Evers

Credit:

Downloaded from Henry Evers (1874), A Handbook of Applied Mechanics, William Collins & Sons, London, fig.58, p.153 on Google Books

Krótki link:

https://www.plwiki.pl/b/9d9ef

źródło:

Wikimedia Commons

Wymiary:

373 x 368 Pixel (8618 Bytes)

Opis:

Drawing of verge escapement, used in antique clocks and watches. Invented in the 13th century, it was the mechanism used in all clocks and watches for 400 years, until about 1660. The labeled parts are: (c) crown wheel, (v) verge, (p,q) pallets. An error in the drawing is that the crown wheel is shown with 12 teeth; verge escapements must actually have an odd number of teeth to function. Alterations: Removed pendulum crutch. Erased upper pallet, which was drawn incorrectly parallel to the other pallet, and redrew pallet in correct position. Removed caption and part labels, replaced labels with new colored ones.

Licencja:

Public domain

Komentarz do licencji:

Public domain - author died more than 70 years ago.