Abstract: Methods, systems and locators for detecting faults in an insulation later of an insulated conductor buried beneath a ground surface are described. The locator comprises a magnetometer arranged to detect a magnetic field generated by the alternating current and to generate a current signal on the basis of the detected magnetic field, and an Alternating Voltage Gradient receiver comprising a pair of probes arranged to make electrical contact with the ground surface, which is arranged to generate a voltage signal indicative of a voltage between the pair of probes. A processor is configured to substantially synchronously sample the current signal and the voltage signal. This enables improved detection of faults in the insulation layer of the insulated conductor.

Abstract: Methods, systems and locators for detecting faults in an insulation layer of an insulated conductor buried beneath a ground surface are described. The locator comprises a magnetometer arranged to detect a magnetic field generated by the alternating current and to generate a current signal on the basis of the detected magnetic field, and an Alternating Voltage Gradient receiver comprising a pair of probes arranged to make electrical contact with the ground surface, which is arranged to generate a voltage signal indicative of a voltage between the pair of probes. A processor is configured to substantially synchronously sample the current signal and the voltage signal. This enables improved detection of faults in the insulation layer of the insulated conductor.

Abstract: Methods, systems and locators for detecting faults in an insulation layer of an insulated conductor buried beneath a ground surface are described. The locator comprises a magnetometer arranged to detect a magnetic field generated by the alternating current and to generate a current signal on the basis of the detected magnetic field, and an Alternating Voltage Gradient receiver comprising a pair of probes arranged to make electrical contact with the ground surface, which is arranged to generate a voltage signal indicative of a voltage between the pair of probes. A processor is configured to substantially synchronously sample the current signal and the voltage signal. This enables improved detection of faults in the insulation layer of the insulated conductor.

Abstract: In a particular embodiment, an air purifier assembly is disclosed and can include a housing assembly. The air purifier assembly can include a first fluid communication channel within the housing assembly. The first fluid communication channel can have an air inlet formed in a back of the housing assembly and an air outlet formed in a first side of the housing assembly. Further, the air purifier assembly can include a second fluid communication channel within the housing assembly. The second fluid communication channel can have an air inlet formed in a back of the housing assembly and an air outlet formed in a second side of the housing assembly, opposite the first side of the housing.

Abstract: Below a ring-spinning spindle, a clamping ring and a clamping sleeve have frustoconical surfaces, at least of one first textured to increase the grip on an underwinding thread. The clamping sleeve, for example, may be spring-biased to axially engage the clamp and force may be required to open the clamp.

Abstract: An underwinding thread clamp for a spindle of a ring spinning or ring-twisting machine has a clamping sleeve biased by a spring against and juxtaposed with a collar on the spindle. The juxtaposed surfaces of the spindle and collar have wavy contours so that, upon engagement of an actuating member with each collar, the latter is cammed into its open position to release the respective underwinding thread so that the latter, engaged when a full bobbin was removed, can be released. The clamping of the underwinding thread permits the thread to be wound on the newly mounted core sleeve.

Abstract: A single piece thread cutter for a ring spinning spindle has radially and axially extending lugs spaced apart about the periphery of the cup shaped sheet metal cylindrical or conical body. Where the lugs are formed by bending tabs, they may be doubled up to increase the stability and thickness.

Abstract: Along a row of spindles of a ring-spinning machine, an underwind-residue remover is displaceable by a belt whose belt stretches are horizontal and lie one above the other over the length of the machine. The underwined-residue remover has a shank guided along a rib at a track for the remover alongside a row of spindles and the track has a foot extending horizontally from the rib and overlain by the stretches of the belt. The stretches of the belt have loops connecting them at opposite ends and a roller arrangement about which the respective loop passes.

Abstract: A ring-spinning machine has a longitudinally extending row of spindles rotatable about parallel spaced axes on a frame, and a drive that has an endless flat belt tangentially engaging all of the spindles. A pair of deflector rollers between two of the spindles are rotatable about respective axes parallel to the respective spindle axes and spaced longitudinally apart along the belt. A drive wheel is rotatable about an axis parallel to and spaced transversely from the roller and spindle axes and the belt passes around one of the deflector rollers, around the drive wheel, and around the other of the deflector rollers. A motor rotates the drive wheel about the wheel axis.

Abstract: A spinning-machine spindle rotatable about an axis has an upper cop-holding region and a lower nonsmooth reserve surface. The reserve surface is formed as a substantially uniform array of tiny pits separated by a raised continuous land extending as a continuous grid over the surface. Normally the pits are of pyramidal shape and the land lies substantially on a surface of revolution centered on the axis.

Abstract: A four-part spindle brake has a support body and cover insertable through an opening in a wall of a spindle rail of a spinning machine and receiving between them a brake body whose two levers are joined centrally by film hinges and are formed as outwardly and downwardly-extending pins received in bearing bosses of the cover and the support body. An actuating plate suspended by horizontal pivot pins on the support body has a spreader engageable between the levers for causing the jaws of the brake body to close upon the spindle.

Abstract: A stiff mounting unit is formed by a pair of longitudinal main girders and support bars for a two sided spinning or twisting machine frame. Bridge pieces are connected to these bars and girders. The support rollers and pressing rollers of the drafting or feed units are mounted on the bars.

Abstract: A drive system has a fixed support, a textile spindle having a whorl and rotatable adjacent the support about a spindle axis, a continuously advancing drive belt tangentially engaging the whorl, and an elongated leaf spring extending generally parallel to the belt and having a portion fixed to the support and an outer end carrying a roller bearing toward the whorl on the belt. The spring is tensioned to press the roller against the belt and the belt against the whorl. A dimensionally stable plate extends generally parallel to the leaf spring, spaced along at least most of its length from the leaf spring. A layer of energy-absorbing material is provided between and bonded to the plate and spring along all of a region extending from the support to the roller so that as the spring and plate bend the layer is subjected to shear.