Abstract: A Data Storage Pack is disclosed which contains in the same housing (a) a plurality of analog data storage units such as video tape arranged in a two dimensional matrix and (b) a RAM data storage unit. The data in RAM identifies and locates the video data by tape unit in the matrix and location on the tape. The RAM memory units of a plurality of these packs are connected to a central processing unit to permit merger of the digital identification data and thus more efficient use of the RAM space. Pairs of these data storage packs may be stacked spaced from one another. A robot arm and a tape player positioned between the stacks are under control of the RAM data to select and play the desired analog information from the appropriate portion of the appropriate tape in the matrix involved.

Abstract: An engine which can convert thermal energy into mechanical energy by making use of the expansion in the volume of a liquid, such as water, when it freezes, and a corresponding decrease in the volume when the frozen material returns to its liquid state. A cylinder containing the liquid with a piston positioned above the liquid is placed in a large container through which a repetitive succession of cold fluids and hot fluids are passed. The cold fluid entering the container freezes the liquid in the cylinder. The volume of the liquid increases raising the piston. The cold fluid is then removed from the container and hot fluid applied to defrost the frozen material in the cylinder returning it to its liquid state. The volume then decreases causing a lowering of the piston. The reciprocating movement of the piston is applied to an output which can then be amplified to produce greater displacement.