Moulding line for moulding loose particle material into preliminary blanks destined to be pressed in a multiple tier press

Claim 1

A MOULDING LINE FOR MOULDING LOOSE PARTICLE MATERIAL INTO PRELIMINARY BLANKS TO BE PRESSED IN A MULTIPLE TIER PRESS, SAID LINE COMPRISING AT ITS INITIAL STAGE AT LEAST ONE MATERIAL FEEDING POINT, A PRESS AT A SUBSEQUENT STAGE, PRESSING PLATES ADAPTED TO MOVE TO SAID PRESS, TWO FIXED PARALLEL SIDE WALLS TO LIMIT THE WIDTH OF SAID BLANKS, AND FRONT AND REAR TRANSVERSE WALLS LIMITING THE LENGTH OF SAID BLANKS, MEANS TO SUPPORT SAID PLATES AND SAID SIDE WALLS, DRIVING MEANS FOR MOVING SAID TRANSVERSE WALLS ALONG BETWEEN THE SIDE WALLS FROM SAID MATERIAL FEEDING POINT TO SAID PRESS, SAID FRONT AND REAR TRANSVERSE WALLS CONNECTED IN PAIR BY FLEXIBLE CONNECTING MEANS, INDEPENDENT OF THE DRIVING MEANS, IN SUCH A FASHION THAT THE DISTANCE BETWEEN THE TRANSVERSE WALLS OF EACH PAIR REMAINS CONSTANT WHILE IT IS PASSED THROUGH THE MOULDING LINE, BUT EASILY CHAGEABLE WHILE IN OPERATIVE, AND RELEASABLE MEANS PROVIDED FOR ESTABLISHING A POSITIVE CONNECTION BETWEEN ONE TRANSVERSE WALL OF EACH PAIR OF TRANSVERSE WALLS AND THE SAID DRIVING MEANS.