with a packer head serving as a sliding mould or provided with guiding means for feeding the material

Full Title

Methods or machines specially adapted for the production of tubular articles > by casting into moulds > using compacting means > using rotatable mould or core parts > using compacting heads, rollers, or the like > with a packer head serving as a sliding mould or provided with guiding means for feeding the material

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