Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring

Full Title

Producing shaped articles from the material by using presses; Presses specially adapted therefor > wherein one or more rollers exert pressure on the material > Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

WORKING CEMENT, CLAY, OR STONE

Subclass:

SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER