Abstract: A system for collecting and removing leaking anesthesia or analgesia gas from an anesthesia apparatus in an operation theater or the like includes a vacuum source (1) and an anesthesia mask (5) adapted to be placed onto the face of a patient and connected to the anesthesia apparatus by at least one supply and removing device, through which the patient is supplied with a mixture of anesthesia or analgesia gas and air and through which air-gas mixture exhaled by the patient is removed, and a vacuum line (4) connected to the anesthesia mask for removing leaking gas to the vacuum source. A T-shaped joint (10) is connected in the vacuum line (4) and has one opening connected by a branch line (11)to the supply and removing device for removing exhaled gas-air mixture via the vacuum source. A noise damping or reducing device (18) is arranged in the vacuum line to reduce disturbing noise as far as possible.

Abstract: An apparatus for removing polluting matter arising in flame cutting and like operations. In this apparatus a suction hood is associated with each cutter unit of a cutting assembly and connected to a suction device, an upwardly facing suction box disposed beneath the cutting table extends transversely of the width of the cutting table and is movable along it. The suction box is connected to the suction device and displaceable together with the cutting assembly with the aid of a device operable by sensing means sensing the position of the cutting assembly so that the suction box will be located beneath the working area of the cutting assembly. The movable suction box is provided with means for reducing the speed of jets directed from the flame cutters toward the interior of the suction box and laden with gases, fumes, dust, minute particles and like polluting matter.