Abstract: A core or shell blow (shoot) machine, equipped with a quick core-box change device, makes it possible to carry out a quick core-box change in just a few minutes, thereby reducing down time. For this purpose, the core-box change device consists of a twin carrier which is swung hydraulically in a horizontal plane about a vertical axis. The care-box in the machine, after picking up the cope and the cope ejector plate, is lowered by the lift table into the carrier, after hydraulic clamps between the table and the core-box bolster have been released. The core-box change device is then rotated 180.degree., which swings the old core-box out of the machine and, simultaneously, swings the new core-box stack-up into the machine over the lift table. In the meantime, the old blow-plate is removed from the sand magazine, outside of the machine, using the blow-plate removal device.

Abstract: The invention relates to a device for the dumping of shells, having a dumping station and pattern carriers in which the dumping station is combined with several pattern carriers transported in a circle and their pattern device. By means of this device, it is possible to carry out the dumping of shells without non-productive times, that is, without taking into account the hardening times of the shells and without stoppage of the machine, which results in a considerable saving in time.