METHOD OF FORMING CAVITIES IN MOULDING SAND Russian patent published in 1995 - IPC

FIELD: foundry practice. SUBSTANCE: a juxtaposition of cavities is successively formed in the sand fed onto the conveyorized mould of a casting machine, whereby each succeeding pattern is inserted before the preceding one is withdrawn. The above order of things when each succeeding pattern is introduced while the preceding one remains static in its place ensures high quality of each mould cavity, having no signs of deformation or damage. EFFECT: guaranteed quality of castings. 3 cl, 5 dwg