Abstract: A machine tool driven by linear motors along a plurality of axes, and unusually robust and rigid, comprises a bed which defines at least a first axis, at least one column operably connected and supported only at one of its ends by said bed, for its guided movement along the first axis, said at least one column extending away from the bed to define a second axis, at least one saddle mount operably connected and supported by the at least one column, for its guided movement along the second axis, at least one main saddle supported by the saddle mount, for its guided movement along a third axis and supporting a spindle for the movement of a tool, wherein said at least one column comprises a portal structure having a first shoulder opposed to a second shoulder such as to define a window within which the saddle mount is arranged, and wherein, between said opposed shoulders and the saddle mount, linear motors are interposed such as to move the saddle mount along said second axis, producing an effect of attraction of

Abstract: A fixed tube of circular cross-section, which is common to several-spinning stations located side by side, is connected to a suction source and has, in each station, a suction slot which is located on the path of the bundle of fibres and is elongate along the direction of movement thereof. Each slot is enlarged in its portion which is located downstream, with reference to the direction of movement of the bundle of fibres.

Abstract: A condensing unit for condensing a bundle of textile fibers comprises a fixed tube of circular cross-section, which is common to several spinning stations located side by side, is connected to a suction source, and has a suction slot in each station. Filtering sleeves are mounted so as to be freely rotatable on the tube and have perforated portions which cover the corresponding slots. The tube has, in each spinning station, a recess which extends along an arc of the circumference of the tube. This recess has a pair of axially spaced-apart radial surfaces which cooperate with the sleeve in order to keep it in the correct axial position along the tube with the perforated portion over the slot.

Abstract: A fixed tube of circular cross-section, which is common to several spinning stations located side by side, is connected to a suction source and has, in each station, a suction slot which is located on the path of the bundle of fibers to be condensed and is elongate along the direction of movement thereof. In each spinning station, the tube has a second suction opening located proximate to each suction slot.

Abstract: A fixed tube of circular cross-section, which is common to several spinning stations located side by side, is connected to a suction source and has, in each station, a suction slot which is located on the path of the bundle of fibers to be condensed and is elongate along the direction of movement thereof. In each spinning station, the tube has a second suction opening located proximate to each suction slot.

Abstract: A condensing unit for condensing a bundle of textile fibers comprises a fixed tube of circular cross-section, which is common to several spinning stations located side by side, is connected to a suction source, and has a suction slot in each station. Filtering sleeves are mounted so as to be freely rotatable on the tube and have perforated portions which cover the corresponding slots. The tube has, in each spinning station, a recess which extends along an arc of the circumference of the tube. This recess has a pair of axially spaced-apart radial surfaces which cooperate with the sleeve in order to keep it in the correct axial position along the tube with the perforated portion over the slot.

Abstract: A fixed tube of circular cross-section, which is common to several spinning stations located side by side, is connected to a suction source and has, in each station, a suction slot which is located on the path of the bundle of fibers and is elongate along the direction of movement thereof. Each slot is enlarged in its portion which is located downstream, with reference to the direction of movement of the bundle of fibers.

Abstract: A demountable subassembly is provided for a series of compacting units of adjacent spinning stations. The subassembly includes a transverse tube with a series of longitudinal suction slots and a suction manifold connectable to the tube in the region of a central opening thereof and having first locking seats on opposite sides of the manifold. Two stopper-like locking elements are mounted at the ends of the tube with each having a second locking seat and two tensioning units are provided to be locked along the tube on opposite sides of the manifold. Each tensioning unit includes a plurality of tensioners for a corresponding plurality of flexible filter loops circulating about the tube over the slots, and tabs at the ends of each tensioning unit for locking in a first locking seat of the manifold and in a second locking seat of one of the stopper-like elements.

Abstract: A fixed tube of circular cross-section, which is common to several spinning stations disposed side by side, is connected to a suction source and has, in each station, a suction slot arranged on the path of a bundle of fibres to be compacted and along its direction of advance. A cylindrical sleeve is freely rotatable on the tube and has a perforated portion which extends around a corresponding slot. The sleeve is rotated about the fixed tube by a pressure roller which presses the bundle of fibres against the perforated portion of the sleeve. The sleeve cooperates with an axially stationary retaining element which is separate from the tube and is arranged to limit the axial movements of the sleeve along the tube.

Abstract: A fixed tube of circular cross-section, which is common to several spinning stations disposed side by side, is connected to a suction source and has, in each station, a suction slot arranged on the path of a bundle of fibers to be compacted and along its direction of advance. A cylindrical sleeve is freely rotatable on the tube and has a perforated portion which extends around a corresponding slot. The sleeve is rotated about the fixed tube by a pressure roller which presses the bundle of fibers against the perforated portion of the sleeve. The sleeve cooperates with an axially stationary retaining element which is separate from the tube and is arranged to limit the axial movements of the sleeve along the tube.

Abstract: A device for drafting and condensing of a roving before its transformation into yarn comprises a drafting unit which confers a predetermined draft on the roving and a condensing unit by the effect of suction on the fibres of the roving through a movable filtering surface reduces its dimensions increasing the cohesion and strength even before it receives the twist from the spinning machine.

Abstract: A locating frame for drawing and compacting units of a pair of adjacent spinning stations in a spinning machine where each drawing unit has a pressure roller which supplies the bundle of fibers to the compacting unit and which rotates a pressure roller of the compacting unit, by means of a belt transmission. The frame comprises: two pairs of seats for housing and keeping parallel and spaced apart two axles on which the pressure rollers of the drawing units and the pressure rollers of the compacting units of the two adjacent stations are mounted rotatably, longitudinal arms acting on the axles in order to keep the pressure rollers of the same spinning station aligned longitudinally, and transverse arms for keeping the transmission belts of the two adjacent stations, respectively, aligned with ring gears fixed for rotation with the pressure rollers.

Abstract: A locating frame for drawing and compacting units of a pair of adjacent spinning stations in a spinning machine where each drawing unit has a pressure roller which supplies the bundle of fibres to the compacting unit and which rotates a pressure roller of the compacting unit, by means of a belt transmission.

Abstract: The subassembly comprises: