two automatic warehouses a1 and a2 are arranged in parallel to each other as shown in fig1 the automatic warehouses a1 and a2 house all the materials necessary for practicing the present system such as wood plate pallets loaded with the materials or jigs which will be shortly referred to as 34 pallets 34 or numerically controlled machine pallets set with the materials or jigs which will be shortly referred to as 34 nc pallets 34 in a variety of modes each warehouse is composed of a plurality of housing blocks b1 b2 b3 bi and so on which are independent of one another the lowermost rack of the front second warehouse a2 is partially allotted for warehousing and delivering stations s and s 39 and for standby stations b1a and b1b b2a and b2b b3a and b3b and b6a and b6b such that the warehousing and delivering stations and the standby stations are constructed of paired two right and two left blocks s and s 39 and b1a and b1b and so on moreover the aforementioned respective pairs of blocks s and s 39 and b1a and b1b etc allow the materials to be inserted or extracted from both their front and back whereas the remaining blocks allow the insertion or extraction of the materials to be effected only from the side of a first stacker crane c1 the aforementioned warehousing and delivering stations s and.