The stapelblock: A novel technique for manufacturing highly reliable ferrite core memory stacks

In an effort to arrive at highly reliable ferrite core storages of low weight, small dimensions, and high mechanical strength under dynamic loads, a new technique has been developed for the manufacture of the so-called Stapelblock. In contrast to conventional designs, the matrix planes are glued one on top of the other and the whole stack is attached to a single common base plate. This solidly bonded sandwich is an extremely compact unit of high inherent mechanical stability. Each matrix plane consists of a thin plate to which the cores are bonded elastically. Those drive wires which link all planes are threaded-in during the manufacturing process as single lengths of wire. It has, therefore, been possible to eliminate the frames usually required for accommodating the wire terminals as well as all internal matrix connections.