Molding terminology

[Carl S Zimmerman]

As I understand the history of European bellfounding, it has always 
been the tradition that the inside of the bell has been molded to be 
perfectly smooth. And until very recent years, essentially all 
bellfounders have molded the exterior profile with circumferential 
ridges formed by notches of various shapes in the strickle board. 
Indeed, the number and placement of these ridges have often been part 
of each bellfounder's distinctive style, as much so as the shape of 
the bell itself.

My question is this: What terminology has been used by English 
bellfounders and English-speaking bell historians to identify and/or 
describe these circumferential ridges? Are there words for this 
purpose which were used in the past but are now considered obsolete, 
or at least obsolescent? And if so, what words are currently in use 
for this purpose?