Record track cutting equipment on record disc - has pick-up head and three separate motors to rotate data record pick-up unit and recorded video track

摘要

The equipment comprises a data record disc (1) driven by a driving motor (M1) with a radially moving pick-up (3) along a track (2) parallel with the radius. This operates limit switches by means of a cord belt drive moved by a second motor. (M2). Signals from the pick-up contacts pass to an ANO Gate (11) to a relay (C) with associated contact (c). This energises or deenergises a third motor (M3) which rotates the body (G) under operation by a work-tool (5). The latter is typically a diamond cutter and may be moved backwards and forwards several times during the cutting process.