DEVICE FOR FORMING CONCRETE ARTICLES Russian patent published in 1997 - IPC

FIELD: construction engineering. SUBSTANCE: device for forming small-size concrete articles has forming mechanism, composite made up of three rigidly interconnected walls secured on vibration table, and turning L-shaped interconnected wall and pan mounted on hinge located below working surface of pan. Rigidly fastened on vibration table are hollow-making inserts, and turning pan is provided with shaped holes for them. Longitudinal section of each hollow-making insert is not larger than cross section formed in crossing of two curves. One curve is obtained from rotation of radius around hinge axis equal to distance from this axis to opposite side of base of hollow-making insert. Other curve is mirror image of first curve location relative to vertical axis of hollow-making insert. Working surface of turning wall is undulated. EFFECT: high efficiency. 5 dwg