Abstract: A machine tool equipped with a supporting body and at least one tool-holder spindle, rotatable about a respective axis, also has a built-in dust extraction device comprising an extractor hood located in close proximity to the spindle and presenting a suction port positionable near to a machining area, so as to extract chips and dust generated in the course of machining operations; the hood is capable of movement along a direction parallel to the axis of rotation, extended and retracted by the action of respective translating members operating in conjunction with sensors able to read the profile of a workpiece, in such a way that the suction port can be positioned to best advantage.

Abstract: A pack for tobacco products consists in at least one rigid packet (2) appearing as a container (3) presenting a bottom end face (4), surmounted by a hinged lid (5) presenting a top end face (6) and rotatable between a position in which the packet is open, and a position of interaction with an inner frame (9) anchored to the container (3), in which the packet is closed. The packet (2) presents at least two main faces of which a first face (14) appears flat and a second face (15) is composed of a substantially central flat portion (16) and two curved portions (17) by which the flat portion (16) is connected to the longitudinal edges (18) of the flat first face (14), so that when viewed in cross section the packet (2) presents a substantially semicircular shape, or that of a rounded isosceles trapezoid.

Abstract: On a fixture for electro-chemical machining for the production of long, curved cavities (11) in a component (12), the working electrode (3) of the electro-chemical machining tool (1) is connected to a guide body (1a) which moveably rests against the inner walls of the respective cavity by means of power-actuated guide elements (2), with the guide body being connected to a flexurally soft and torsionally stiff guide linkage (5) coupled to a feed and rotary drive. Control of the movement of the guide body is accomplished in dependence of at least one wall thickness measured with a measuring device (13, 14) during feed movement.

Abstract: On a compressor with compressor blades, a flow transition fixation mechanism (4) is provided on the suction side (2), approximately parallel to the leading edge (3) and upstream of the compression shocks acting upon the blade, which prevents the transition point from the laminar to the turbulent boundary layer flow from oscillating, thus suppressing oscillation of the compression shocks and their coupling effect with the natural frequencies of the compressor blades.

Abstract: An inexpensively manufacturable arrangement for the cooling of thermally highly loaded components, for example the combustion chamber of a gas turbine, comprises cavities (4) provided on the thermally loaded inner surface/air exit side (3) of the wall (1) of the component which are supplied with a cooling medium from the outer surface/air inlet side (5) via cooling air openings (6) and which are covered by a heat resistant wire mesh (7) of a certain permeability. The cavity, which acts as pressure accumulator, forms, in connection with the wire mesh, a uniform pressurized-air film (8) for the cooling and heat shielding of the wall surface.

Abstract: A strip of wrapping material is advanced by a feed unit that includes a gumming device composed of a gumming roller and a transfer roller contra-rotating about horizontal and parallel axes and in tangential contact one with another along an area coinciding with a straight line generator common to both.

Abstract: A tie rod jam nut includes a tubular body having an axial bore for receiving a tie rod. A locking portion at a first end of the body can engage the tie rod and a threaded portion of a connecting component attached to the tie rod to lock the connecting component to the tie rod as the locking portion is rotated in one direction and disengage the tie rod to unlock the connecting component when rotated in an opposite direction. An engagement portion is spaced distally from the locking portion toward a second end of the tubular body. The engagement portion can be rotated to remotely rotate the locking portion between the locked and unlocked positions.

Abstract: In a fault detection logic for an engine controller for the detection of too low or too high a thrust relative to an intended positive or negative acceleration, the positive or negative error of the engine pressure ratio and the positive or negative acceleration of an engine shaft are simultaneously compared with a specified threshold, with the simultaneously determined transgression of both thresholds safely identifying a loss of thrust control. Disturbances caused by engine surge or signal noise are eliminated.

Abstract: A supply unit and a user unit employed in the manufacture of tobacco products, typically cigarettes and the like, are linked by a duct along which a mass of the cigarettes is advanced from the outfeed of the supply unit toward the infeed of the user unit. The advancing mass of cigarettes is parted at an intermediate zone of the duct either by rods or by a pair of frames, in such a way as to create a void that will accommodate a trolley directed into the duct from a housing by an elevator; once inside the duct, the trolley proceeds to push the mass of cigarettes from the intermediate zone toward the inlet of a hopper in such a way as to empty the duct completely, for example when changing over from one brand of cigarette to another. To advantage, the trolley is composed of two articulated structures so that its geometry and dimensions can be varied to match the variations in geometry and depth of the duct.

Abstract: Tipping papers are cut from a continuous strip of material advancing along a set feed path by a unit comprising a suction roller and a roller equipped with blades, which combine to separate the single papers from the strip at a prescribed frequency; the tension of the advancing strip is varied cyclically by diverter elements associated with the suction roller and capable of movement at intervals coinciding with the frequency of the cutting stroke between two limit positions, one located externally and the other internally of the outer surface presented by the suction roller.

Abstract: A valve housing 1 with valve seat 10 incorporated in a fluid line features a closing element 2 with a valve disk 11 and a valve stem 12 extending through and sealed in the housing wall which, on the outer side, is locked by means of a locking pin 17 actuated by a solenoid. Owing to the geometry of the valve disk and the annular gap 20 as well as the action of a spring element 23, the inlet-side pressure acting upon the closing element 2 exceeds the outlet-side pressure, as a result of which the fluid flow via the annular gap is interrupted in only a few milliseconds merely by the permanently present, higher mechanical pressure if the valve stem is released merely by the movement of the locking pin effected by a small and lightweight solenoid 18, actuated on the basis of a signal indicating an event.

Abstract: A tube-type vortex reducer for the conduction of cooling air in a compressor 1 of a gas turbine with at least one radial secondary air tube 2 arranged in a disk interspace 3, includes a deflector arranged in a discharge area of the secondary air tube for the deflection of the secondary air flow into an axial direction or away from an axial direction.

Abstract: In a gas turbine, the compressor load is reduced and the turbine load is increased for controlled bearing load reduction by forming a low-pressure chamber (8) that is shielded from the compressor air at the compressor (1) and a high-pressure chamber (9) that is supplied with compressor air at the turbine along the high-pressure shaft (2). The pressures can be controlled within specific limits. Controlled bearing load reduction allows high speeds and a long service life of the bearings.

Abstract: A compressor blade for an aircraft engine includes a blade core made of a fiber compound material and a metallic enclosing structure. The enclosing structure is of a multi-part design and includes blanks (4, 5) attached to the blade core by a metallic weave (6) on the suction side and on the pressure side, with the two blanks being firmly connected at the aerodynamically shaped leading edge of the compressor blade by to a leading-edge former (3). Depending on the specific loads applied on the pressure side and on the suction side, welds attaching the blanks to the leading-edge former (8, 9) are offset relative to each other and the material thicknesses of the components of the enveloping structure are matched to each other.

Abstract: A pack of rigid type for tobacco products, substantially of prismatic geometry and presenting a plurality of side faces (15, 16, 17; 34, 35, 36, 37), comprises a container (3; 29; 40), a lid (5; 30; 41), and a coupon (24) inserted inside the pack (1), disposed in contact with at least one of the side faces (15, 16, 17; 34, 35, 36, 37). At least one of the side faces (15, 16, 17; 34, 35, 36, 37) of the pack (1) presents a window (25) serving to expose a predetermined area (27) of the inserted coupon (24) bearing advertisements, messages and written matter addressed to the consumer. Where the pack (1) has a reinforcing frame (20) positioned internally of the container (3; 29), the window (25) is afforded by a face (7) of the container occupied by the frame (20) and the frame itself affords a respective window (26) substantially coinciding with the window (25) in the container.

Abstract: A toolhead intended for a multi-axis machine tool incorporates a tool-holder rotatable about the tool axis and attached to the spindle of a spindlehead, also a stop cage element mounted slidably to the tool-holder, which is furnished with a collar presenting an active surface set transversely to the tool axis and offered to the surface of a workpiece. The stop cage element alternates between a first operating position in which the active surface of the collar is located forward of a countersink portion presented by the tool, considered in relation to the feed direction of the spindlehead as it approaches the surface of the work, and a second operating position in which the countersink portion will be located forward of the active surface, at least in part. The axial position of the stop cage element relative to the tool-holder is monitored continuously by a sensing system.

Abstract: A combustion chamber of a gas turbine includes starter film cooling of a combustion chamber wall 4 and several circularly arranged burners 7 with local maxima and minima in the intensity of the starter film 3 being provided around the circumference of the combustion chamber wall 4.

Abstract: Packets (2) of cigarettes are packed in multiples adopting a rigid carton (1) of parallelepiped shape presenting two end faces (11, 12) coinciding with the flanks (13, 14), and four side faces (3, 4, 5, 6) of which two coincide with the bottom (10) and the top (8).

Abstract: On a high-pressure turbine rotor wheel, where a blade neck interspace (14) exists between two adjacent turbine blades (4) which is defined by the disk lobe (2) and the opposite blade necks (5) and blade platforms (6), part of the air supplied by the high-pressure cooling channel (9) is passed via a diverter cooling channel (10) into the blade neck interspace (14) to effectively cool the blades and the disk rim (1) in this area and to simultaneously supply the low-pressure channels (12) with cooler air and displace the hot sealing air. Thus, the life of the turbine rotor wheel is increased with simple means.

Abstract: A high-pressure turbine of a gas-turbine engine provided with a turbine disk (1) carrying rotor blades (2) and with stator blades (3), and with a lateral wheel cavity (5) being formed between the turbine disk (1) and the stator ring (4), wherein a seal (8) is provided in axial direction between stator blade platforms (6) and rotor blade platforms (7) and which is arranged radially outwardly adjacent a main gas duct (9).