SCENERY LIFTING AND LOWERING DEVICE Russian patent published in 1994 - IPC

FIELD: scenery equipment. SUBSTANCE: device has bar for secured upper edge of scenery on it, ropes connected with counterweight and bar lifting members through pulleys, rope tie and drives for displacing scenery. Device is further provided with pocket and two rolls, which are disposed one above the other in the vicinity of zone, where scenery is received in the pocket. During stage action rolls are driven into rotation by chain drive. The rolls are engageable with scenery to provide friction displacement of scenery, which is facilitated by adhesion of scenery with resilient covering of rolls. EFFECT: enhanced reliability in operation. 2 dwg