Abstract: The invention relates to a method for producing a nonwoven fiber composite for the manufacture of filters in the tobacco industry, wherein the method feeds separated fiber materials to a fluidized bed and the separated filter material inside the fluidized bed are transported to a rod-forming device, essentially by a transport air flow flowing in the direction of the rod-forming device and the filter material is compiled on the rod-forming device prior to forming the compacted fiber filter elements.

Abstract: A roller for a device for processing a filter material ribbon in the tobacco-processing industry. The roller comprises a roller core and a covering for the roller core. The roller has at least one wear indicator operatively arranged for indicating wear of the covering.

Abstract: The invention relates to a method for producing a nonwoven fiber composite for the manufacture of filters in the tobacco industry, wherein the method feeds separated fiber materials to a fluidized bed and the separated filter material inside the fluidized bed are transported to a rod-forming device, essentially by a transport air flow flowing in the direction of the rod-forming device and the filter material is compiled on the rod-forming device prior to forming the compacted fiber filter elements.

Abstract: The invention relates to a method for processing filter material for use in the manufacture of tobacco industry filters wherein a mass of finite fibers is feed to a separating device wherein finite fibers are separated into essentially individual separated fibers and then transported to a continuous rod machine.

Abstract: A method and machine produces a continuous filter rod. At least one type of finite, essentially completely separated fibers is transported with transport air to a conveyor. A fiber nonwoven is formed on one surface of the conveyor to result in the fibers at least partially contacting one another. The fiber nonwoven is deposited onto a wrapping material web. The fiber nonwoven is then wrapped a material web.

Abstract: A method for producing a nonwoven for the manufacture of filter rods in the tobacco industry includes separating fibers of at least one type of filter material in at least one separating device having at least one separating element rotating about a rotational axis. The separated fibers are fed to a conveyor moving in a conveying direction such that the separated fibers form the nonwoven.

Abstract: The invention relates to a method for producing a nonwoven fiber composite for the manufacture of filters in the tobacco industry, wherein the method feeds separated fiber materials to a fluidized bed and the separated filter material inside the fluidized bed are transported to a rod-forming device, essentially by a transport air flow flowing in the direction of the rod-forming device and the filter material is compiled on the rod-forming device prior to forming the compacted fiber filter elements.

Abstract: A roller for a device for processing a filter material ribbon in the tobacco-processing industry. The roller comprises a roller core and a covering for the roller core. The roller has at least one wear indicator operatively arranged for indicating wear of the covering.

Abstract: A tow of fibrous filter material for tobacco smoke is transported lengthwise through a so-called finger which is an elongated channel wherein the cross-sectional area of the tow is gradually reduced to that of the rod-like filler in the wrapper of a filter rod. The homogeneity of the tow is enhanced by introducing a compressed gas into longitudinally spaced apart gas admitting portions of the channel and by providing the channel with sets of openings for the evacuation of gas downstream of each gas admitting portion. The channel discharges a continuous homogenized tow into a wrapping mechanism wherein the tow is draped into a web of cigarette paper or the like, and the thus obtained filter rod is severed to yield a file of filter rod sections of unit length or multiple unit length.

Abstract: Fragments of plastic fibers, such as cellulose acetate fibers, forming part of mouthpieces of filter cigarettes or like rod-shaped smokers' products tend to become separated from the respective filter mouthpieces at the end faces which develop in response to the making of cuts across filter rod sections of double unit length between pairs of plain cigarettes to obtain filter cigarettes of unit length. The fragments of fibers which tend to become separated and to contaminate the area around the filter cigarette making machine are either bonded (e.g., by heat and/or by a solvent) to the respective mouthpieces, or are removed by suction and/or by resorting to electrostatic precipitation. It is also contemplated to cause smoke-permeable layers of filter material to overlie the end faces of the mouthpieces.

Abstract: The treatment of a tow of filamentary filter material for tobacco smoke prior to draping of the resulting filler into a web of wrapping material is followed by advancement of the filler in a plane and single or multiple deflection of successive increments of the filler from and transversely of the plane. The deflected increments are returned into the plane and are advanced into the draping unit. Deflection of successive increments of the filler reduces the likelihood of the so-called towsplit which denotes the separation of partially bonded and gathered filaments from each other.

Abstract: Fragments of plastic fibers, such as cellulose acetate fibers, forming part of mouthpieces of filter cigarettes or like rod-shaped smokers' products tend to become separated from the respective filter mouthpieces at the end faces which develop in response to the making of cuts across filter rod sections of double unit length between pairs of plain cigarettes to obtain filter cigarettes of unit length. The fragments of fibers which tend to become separated and to contaminate the area around the filter cigarette making machine are either bonded (e.g., by heat and/or by a solvent) to the respective mouthpieces, or are removed by suction and/or by resorting to electrostatic precipitation. It is also contemplated to cause smoke-permeable layers of filter material to overlie the end faces of the mouthpieces.

Abstract: An apparatus for processing one or more tows of filamentary filter material for tobacco smoke between one or more bales and the inlet of a filter rod making machine defines for each tow an elongated path having a substantially U-shaped or V-shaped part. Successive increments of the tow are stretched at least while advancing downwardly along one one leg of the U-shaped or V-shaped part of the path, and successive increments of the tow are gathered while advancing upwardly along the other leg of the U-shaped or V-shaped part of the path. A unit which serves to spray a plasticizing agent against the filaments of the tow is adjacent the substantially horizontal portion between the lower ends of the legs of the U-shaped part or is adjacent the lower region of the other leg of the V-shaped part of the path. The length of the one leg of the U-shaped or the V-shaped part of the path need not exceed 1200 mm, and the maximum width of the tow need not exceed 150 mm.

Abstract: A machine vise is provided with a body having a fixed jaw and a movable jaw which may be moved toward the fixed jaw by means of a tractively acting hollow screw spindle. A force amplifier is arranged below the fixed jaw and is operable by a pushing rod shiftably inserted in the hollow screw spindle. A common driving device rotates the screw spindle into and away from its clamping position. Upon a predetermined clamping force being exceeded the force amplifier is activated by the pushing rod. The movable jaw may be split in upper and lower portions.

Abstract: A machine vice with force amplifier comprises a base member (1) with an upwardly open, elongated recess (2), a fixed jaw (4) arranged at one end (1a), which is unitary with the base member (1). A movable jaw (5) is slidably mounted on the base member (1) and bears on its under side a unitary projection extending into the recess (2), with a spindle nut (7). A tightening device (8, 9) is arranged in the recess (2), consisting of a screw spindle (8) with force amplifier engaging in the spindle nut (7), which are adapted to be driven by a common handle (15). On the other end (1a) of the base member (1) a reaction plate (11) is fixed by a plurality of screws (12) on a fixing surface (14) ewxtending perpendicular to the spindle axis (A), against which plate the tightening device (8,9) abuts. The base member (1) comprises a second fixing surface ( 14a) for the reaction plate (11) at its one end (1a) and corresponding threaded bores (13a) for its screws (12).

Abstract: The mechanical amplifier has a wedge-shaped primary member. The primary member is displaceable between two pairs of rollers which are arranged in mirrorimage with respect to a plane of symmetry. All rollers are arranged with their axes parallel, are freely movable, and lie against the wedge-shaped primary member. Two rollers which lie against each other are provided on each side of the wedge member, of which rollers one bears against a stationary abutment surface and the other bears against a co-operating bearing surface of a secondary member. At least one of said bearing surfaces includes with the plane of symmetry an angle of inclination which is less than 90.degree.. A spring assembly which acts on the secondary member causes the rollers and their bearing surfaces to be held in continuous engagement against each other.

Abstract: A circular brush having two mutually intertwined wire sections serving as a bristle carrier, wherein the bristles of the brush are fixedly clamped between the intertwined wire sections in a helical- or spiral-like manner. A tubular element coaxially surrounds the wire sections. This tubular element is provided with openings at its jacket surface or shell and through such openings there extend towards the outside the ends of the bristles.

Abstract: A mechanical power amplifier for a vise having housing means and a primary member and a secondary member mounted therein. At least the primary member is movable in the housing and transmits a force to force amplifying and transmitting structure also mounted in the housing to effect both an amplification of the force transmitted thereto as well as a transfer of the force from the primary member to a force transmitting member. The force amplifying and transmitting structure includes a pair of bell-crank levers arranged in a mirror-image manner relative to the center axis of the housing. Each bell-crank lever has a long lever arm with a wedge surface thereon and a short lever arm. The wedge surface engages a cam surface on the primary member and is movable laterally in response to a movement of the primary member. A pair of laterally spaced rollers are positioned on opposite sides of the center axis of the housing and engage the short lever arm and an abutment surface on the secondary member.

Abstract: A screw spindle drive comprising a spindle with one or more thread grooves of circular cross-section, a nut with a complimentary groove or grooves, and a closed ring of balls in each raceway formed by a groove in the spindle and a corresponding groove in the nut has the pitch of each raceway less than the product of the ball diameter and the number of raceways. The thread grooves have a radius of curvature equal to that of the balls but their depth is less than this radius. A return groove in the nut has only to be deep enough to allow the balls to ride over the ridge between turns of the thread groove. The balls can be held by permanent or temporary cages for ease of assembly.