Abstract: The invention relates to a method of producing an optical cable (1) or a modular unit for an optical cable. According to the inventive method, a metal strip that is drawn off a supply reel is gradually shaped to an open seam tube. At least one optical waveguide (2) is drawn off a second supply reel and introduced into the open seam tube. The longitudinal seam of the open seam tube is closed by welding and after welding an excessive length of the optical waveguide vis-á-vis the metal tube is produced in said metal tube. The welded metal tube (3) is crimped, dented or undulated (3b) to produce.

Abstract: In an apparatus for manufacturing an optical fiber cable that includes a metal tube (3) in which at least one optical fiber (2) is arranged in a viscous plastic mass, which apparatus includes a device continuously forming a metal strip (5) into a slit tube, a welding device (7), and a charging tool with at least one tube (22b) whose one end projects into the slit tube (22b), whereby the tube introduces the optical fibers (2) into the metal tube (3), the one tube (22b) has an indentation (22d) on its surface facing the welding device (7), which is covered toward the top and thus forms a channel (22f), and a coolant gas or protective gas is directed through this channel (22f).

Abstract: A device for making metal tubing comprises a tube forming device for shaping a continuously conveyed metal band into an open seam tube and a welding device for welding the longitudinal seam of the tube. The welding device is a laser welding device with a welding head which is inclined at an angle with respect to the vertical. Disposed after the laser welding head is a radiation trap for trapping reflected laser beams. The radiation trap (3) is composed of a metallic housing with water-cooled walls and an inner surface which is blackened. The radiation trap (3) is arranged relative to the laser welding head (1) in such a way that the reflected laser beams (1b) are guided into the inside of the housing.

Abstract: During the production of long metal tubes with small diameters, where a metal tape is drawn from an annular coil, is gradually formed into a tube with a longitudinal slot and the longitudinal slot is welded, the internally and externally located metal tape ends of a number of annular coils are interconnected by welding, and the annular coils are horizontally positioned on tension rings which are attached to a rotatable take-up drum. The metal tape with the welded ends is drawn off without interruption.

Abstract: In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.

Abstract: In a method and apparatus for manufacturing an optical fiber cable, a metal band is gradually shaped into a lengthwise slotted tube, the optical fibers are introduced into the still open slotted tube, the lengthwise slot of the tube is welded and the outside diameter of the welded tube is reduced. The welded tube with the reduced outside diameter is wound at least once around a take-up reel. A force provided on the reduced outside diameter welded tube as it is wound on the take-up reel causes an elastic strain of 0.1 to 0.6% on the tube. The strain is released on the take-up reel to produce an overlength of the optical fibers relative to the reduced outside diameter welded tube.

Abstract: A device (24) is provided for the electromagnetic braking and clutching of at least one storage spool (7). Each storage spool is located on a hollow shaft (5) and can rotate around its longitudinal axis (25). Each storage spool permits strand-shaped materials to be drawn therefrom and strand-shaped materials to be wound thereon when the storage spool (7) is driveably connected to the hollow shaft (5). The electromagnetic braking and clutching device includes a star-shaped support unit (31) that is securely affixed to the hollow shaft (5) and has a number of radially extending holding devices (37) distributed around its periphery. The support unit (31) holds at least one electrically excitable magnet coil (45) radially by using of a holding device (37), at a distance from the hollow shaft (5). The device is particularly suited for braking and clutching storage spools (7) with large outside diameters, which are located on a hollow shaft (5).

Abstract: In a method for producing a lengthwise welded metal tube with an outside diameter of 1 to 6 mm, whereby a metal band is shaped into a lengthwise slotted tube by a forming tool, and the lengthwise slot of the tube is welded by a laser welding installation, the tube to be welded passes immediately before and immediately after the welding point area through a guide that guides the surface of the tube to keep the edges of the band in contact with each other and keeps the welded seam stress-free. The jaws of a clamping tool grip the welded tube immediately downstream of the guide to keep it from twisting.

Abstract: In a device for welding thin metal sheets passing thereunder and, more particularly, a stationary, water-cooled welding device for welding the lengthwise edges of a metal band formed into a tube, under protective gas, with the aid of one or more non-fusing electrodes (10) located in the welding head, each electrode (10) is held by an electrode clamp (5) in a burner housing (1). The electrode clamp (5) is held in the burner housing by a clamp holder (3). A tube-shaped clamping rod (7) is located in a central passage of the clamp holder (3). The electrode (10) is held by a slotted end of the tube-shaped clamping rod (7). This enables the electrode (10) to be pulled upwards out of the clamp holder (3), together with the clamping rod (7).

Abstract: A method for manufacturing a coaxial cable is described, whereby a dielectric layer (2) is extruded over an inner conductor (1), a lengthwise incoming metal strip (3) is formed into a tube, having a lengthwise slot around the insulated conductor (1, 2). The tube (3) is welded along the slot to thereby form a welded seam (4), and the welded tube is drawn down onto the surface of the dielectric layer (2). A metal strip (3a) having a plastic coating (3b) at least on one of its major surfaces is used to form the tube (3), and its lengthwise edges are welded by a laser (19).

Abstract: A conveying device for transportation of extended line products such as cables or tubes has tension elements to exert a tension force on at least two tension chain wheels in the direction away from the driving chain wheels. A self-locking wedge prevents the tension chain wheels from moving back and forth. The automatic adjustment of the roller chains reduces wear of the conveying device and prevents speed changes during transportation of the extended line product.

Abstract: A device (1) is used for twisting rope-shaped material (15), particularly of a larger cross section, with changing twist direction (SZ), consisting of a rotor (4) that changes direction and/or RPM, with two opposing chain drives (7) for the material (15), which are parallel to the rotor axis along an endless path. The material is gripped, guided and subsequently released by collet chucks along a prescribed pathway determined by a pressure rail (16). The collet chucks (14) are additionally attached to the chain drives (7) outside of the pathway, and are force-guided along the endless path.

Abstract: A capstan draw apparatus that includes a plurality of split clamps; a plurality of support carriages each having one of the split clamps positioned thereon; an endless chain drive mechanism for concurrently pulling each of the support carriages; and an elongated guide frame mechanism for successively closing and opening the split clamps about an elongated member. The apparatus further includes an endless lateral guide frame mechanism including first and second oppositely disposed, parallel endless lateral guide frames that are spatially positioned parallel to the endless chain drive mechanism and extend on opposite sides of the plurality of support carriages for continuously supporting each of the carriages in a positively guided manner for uniform movement thereof throughout their entire endless paths of rotation.

Abstract: In a process for the continuous production of helical or annular corrugated, thin-walled, in particular longitudinally welded metal tubes, in which a freely rotating roller ring in a turntable corrugation head, which is eccentric with respect to the smooth metal tube, rolls against the smooth surface of the metal tube to produce the corrugation, and the metal tube is transported by a traction device that grips the smooth and/or corrugated metal tube, the force acting on the roller ring is constantly measured, and the rotation speed of the head is controlled as a function of the measured force.

Abstract: A device for attaching protective insulation to the end of an electric wire, having at least one lead to which a contact element has been attached, includes a carrier (1), equipped with at least three injection dies (3), which can rotate around an axis (A), and of at least one injection molding device (2, 10), located in the circumferential area of the carrier (1). A guide path, extending circumferentially around the carrier (1), is attached to a fixed part of the device. The guide path includes two portions of different radii, extending together nearly 360.degree., which are concentric to the axis (A) of carrier (1), and converge at one end through a transition piece in the guide path. The other ends of the guide path are located at the loading position level (I) of the injection dies (3). The movement of the injection dies (3) is guided by the guide path. The injection dies are closed in the small radius area of the guide path, and are open in the larger radius area.

Abstract: A cable stranding apparatus is described as having a plurality of stranding rotor units that are interchangeably coupled, in a locked manner, to a single rotor drive assembly of such apparatus. Each stranding rotor unit is designed to accommodate the dimensions of particular cable elements to be stranded. For this purpose, the stranding rotor unit for cable elements of a large cross-section has a plurality of large collets for accommodating the drawing of such large cable elements through the unit; while the cable stranding rotor unit for cable elements of a small cross-section has a plurality of smaller collets for drawing the smaller cable elements through such unit.

Abstract: A method for the continuous marking of elongated material (1) which is moved in its longitudinal direction, by which ring-shaped markings which are limited in axial direction are applied to the surface of the material (1) by means of ink jets (2). The ink jets (2) emerge under pressure from two nozzles (6, 7) which are arranged parallel to each other and swing continuously on a swing shaft (5). If only one nozzle (6) is to function, the other nozzle (7) is closed by a 3/2-way valve (20). At the same time, a bypass (18) is opened through which the quantity of ink intended for the disconnected nozzle (7) is conducted away. The ink jet (2) of the still functioning nozzle (6) is then retained without change.

Abstract: In combination with a spool upon which elongated stock such as ribbon, wire, thread etc. is to be wound and from which the elongated stock is to be unwound; an electromagnet with cooperating armature and a yoke; the device is to be selectively used as a brake and as a clutch. This is accomplished by a permanent air gap from 0.1 to 1.5 mm between the yoke and the armature to remain effective in the energized state. On application of a relatively high voltage to the electromagnet positive coupling obtains between the electromagnet and the armature and, therefore between a shaft connected to the electromagnet and the armature as thereafter being connected to the spool; for positive common rotation of these parts. Upon application of a lower voltage to the electromagnet, a brake force becomes effective between the electromagnet on one hand, plus armature and the spool subassembly on the other hand.

Abstract: There is disclosed a method and apparatus for fixing a predetermined spacial orientation of exposed end portions of plurality of optical fibers included within a conductor unit; extending such exposed end portions between two terminal blocks for maintaining an axial tension therein; and scratching a surface of each of such end portions held in tension in a common transverse plane for causing each of such end portions to break and form a new end face. After such breaking, the spacial orientation of the remaining exposed end portions of the optical fibers is continued during the individual welding thereto of aligned end faces of a plurality of optical fibers of a second conductor unit.

Abstract: An apparatus for color coding and dyeing or otherwise marking a light wave conductor optical fiber includes a dyeing stage and a drying stage; the conductor is unreeled from a spool for passing through the stages, the marked conductor is taken up by another spool or the like, and a downstream drive is coupled to the conductor for moving it at a particular speed through the dyeing and drying stages. An upstream drive mechanism is also coupled to the conductor upstream from the dyeing stage for pulling the same from the supply spool, and includes a drive controlled towards the same speed as the downstream drive and a compensating roller to ensure sufficient tension in the conductor so that the upstream and downstream speeds are similar.