Abstract: A multi-layer structure for shielding electromagnetic energy in a data processing equipment enclosure. The multi-layer structure includes a first layer formed of a first material having a first set of electromagnetic properties and a textured surface and at least one further layer stacked behind the first layer and formed of at least one further material having a second set of electromagnetic properties, the second set of electromagnetic properties being different than the first set. The first and further layer are configured to absorb the electromagnetic energy and dissipate the energy as heat within the multi-layer structure.

Abstract: An electrical device for propagating an electrical signal which emits radio frequency electromagnetic energy, the electrical device having a medium for propagating the electrical signal and a radio frequency electromagnetic energy absorbing material, radially surrounding a portion of the medium, for attenuating the radio frequency electromagnetic energy emissions generated by the signal.

Abstract: The machining apparatus includes a machine tool having a primary spindle slide with a transversely extending tool head support rail member thereon which is aligned successively with a tool head load rail mechanism and unload rail mechanism on a side of the machine tool by movement of the primary spindle slide to load or unload a multi-spindle tool head. When the tool head is loaded in operative position on the rail member, the spindles of the tool head are driven by the primary spindle through a gear train in the tool head. An overhead gantry robot conveys tool heads between the load and unlaod rail mechanisms and a stationary tool head storage unit on the side of the machine tool.

Abstract: A drive mechanism for an automatic transfer machine has a mechanical transfer drive including a motor driven gear box with an output shaft connected to a single, rotatable drive arm with cam follower means thereon selectively engageable with one or the other of a pair of spaced cam slots on a transfer buggy to define a linear geneva index for producing a harmonic motion, two stroke, transfer of the transfer buggy so as to produce improved start-stop-start-stop sequences of movement of pallets in a linear geneva operated transfer system.

Abstract: A machine tool control system adapted to provide automatic depth compensation for a cutting tool which controls the position of the tool in relation to a workpiece to hold the predetermined depth of a sleeve bore surface.