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6900728 |
System to detect user entry into a defined danger zone
A system and method for detecting user entry into a defined danger zone surrounding a saw blade includes a non-conducting member defining an opening therein for receiving a saw blade. The...
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6720873 |
Method and apparatus for testing magnetic proximity detectors on ski lifts
A device for testing a cable deroped magnetic proximity detector positioned adjacent a cable sheave or sheave assembly on a cable operated ski lift. A sleeve of non-ferromagnetic material is...
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6708731 |
Method for monitoring weft yarn run/stop conditions
A method of monitoring the weft yarn run/stop conditions during each insertion cycle in a shuttle-less weaving machine like a rapier or projectile weaving machine by means of an electronic weft...
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6653943 |
Suspension rope wear detector
A wear detector for a suspension rope having a plurality of load bearing strands covered by a sheath includes a sensor at a surface of the sheath. The sensor senses a characteristic of the rope...
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6303938 |
Method and device for detection of untextured yarn sections in textured filament yarns
A method for detecting untextured or defectively textured yarn segments in textured filament yarns during the texturing process, in which the textured yarn is continuously measured by the...
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6110403 |
Method of producing a synthetic yarn
A method of producing a synthetic yarn, wherein a yarn is spun and wound in a continuous process. For monitoring the quality, several process parameters are continuously measured. From measured...
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6087934 |
Velocity-discriminating cable motion transducer system
A system for monitoring motion includes a cable-encoder combination to create an electrical signal indicating distance and a microprocessor monitoring system to provide time measurement in...
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6014991 |
Method of monitoring the function of a stop motion arrangement in an air jet loom
In an air jet loom including a stop motion arrangement with first and second light beam sensor devices for detecting the presence of an inserted weft thread, the functionality of the sensor devices...
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5844494 |
Method of diagnosing errors in the production process of a synthetic filament yarn
Method of diagnosing failures in a production process of a synthetic filament yarn, in which a first process parameter dependent on the process control is continuously measured and evaluated, and...
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5721533 |
Cable deployment monitoring arrangement
An arrangement for monitoring the deployment of cable from a cable supply includes reflective tape disposed on the exterior of the cable at longitudinally spaced locations. Light having a...
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5718854 |
Detection of broken filaments
Individual broken filaments in a running threadline, e.g., freshly-melt-spun filaments, may be detected and recorded by a novel piezoelectric film sensor device.
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5682146 |
Method of monitoring an advancing yarn
Method of monitoring the quality of an advancing yarn by continuously measuring the yarn tension, which includes determining the progression of the yarn tension upon occurrence of a defined failure...
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5525915 |
Electrical conductivity tester for ropes
A tester is provided for measuring the dielectric integrity of a rope, on a continuous basis. The device incorporates a pair of rope contact and retention members, that may comprise pair of...
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5469149 |
Method and apparatus for producing a wound package of an endless thermoplastic material
A method and apparatus for continuously producing an endless thermoplastic material, such as yarn or tape, and winding the material into a package. A physical parameter of the package, such as its...
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5440870 |
Method and apparatus of monitoring the quality of a false twist textured yarn
A method and apparatus for monitoring the quality of the yarn processed on a false twist texturing machine is disclosed, and which includes sensing the tension of the advancing yarn at a location...
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5432502 |
Method and apparatus for monitoring signals from transducers and optical encoders
An apparatus and method for monitoring the incoming transducer signal or synchronizing signal from an optical encoder in real time and display the degree of stability. The incoming transducer...
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5424723 |
Apparatus and methods for checking the presence of yarns on a textile machine
The presence of yarns of a tentered yarn layer on a textile machine is checked by traversing a feeler transversely across a row of the threads to deflect the yarns. A pressure sensor of the feeler...
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5365222 |
Method and detector for detecting surface roughness or defects on coated wire or cable
A method and detector are provided for accurately and continuously detecting surface roughness or oversize defects on coated wire or cable, such as magnet wire. This is achieved by passing the wire...
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5270951 |
Method and apparatus for storing error signals
A method of storing in a memory having a predetermined number of storage spaces signals representative of deviations in the tension continuously monitored in a plurality of strands of yarn running...
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5205327 |
Electrostatic weft detector
The weft break stop motion (1) detects without contact a potential displacement in the feeler (5a) effected by a weft thread moving past by means of a plate-like layered sensor element (2). With...
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5164710 |
Method of obtaining a thread running signal
In a method of obtaining a thread tension signal a sensor in the form of a piezofoil is attached to a thread guide or to its mounting and delivers a signal which reflects, amongst other things, the...
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5055829 |
Method and apparatus for monitoring yarn tension
In monitoring the yarn tension at each of a plurality of yarn processing stations, the mean value of the monitored tension is continuously determined at each station, and the differential between...
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5043708 |
Apparatus for detecting single-yarn breakage in a two-for-one twister
As yarn travels toward a take-up device after having passed a ballooning area, the travelling course thereof is bent through contact with a pressure sensor. An alarm device generates an alarm when...
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5019780 |
Method and apparatus for monitoring optical fibers during payout
The turns of an optical fiber paid out from a canistor are counted, and the signature of the optical fiber is measured, by monitoring the electromagnetic field of the charge on the optical fiber as...
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5017911 |
Method and apparatus for measuring the tension of an advancing yarn
A method and apparatus measures the tension of an advancing yarn which is subject to interruptions of the yarn path, resulting for example from the severance of the yarn. During such interruptions,...
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4951030 |
Monitoring system
A thread motion monitoring system wherein the presence or absence of thread motion for discrete threads is detected and signals developed in terms of the failure, non-thread motion, of selected...
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4924406 |
Optical slub catcher, particularly suitable for openend process
An optical slub catcher, particularly suitable for open-end process weaving machines, comprises a special optical head for the measurement of yarn diameter, the analog signal of which is cleaned of...
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4909027 |
Multi-spindle textile machine monitoring process and apparatus
Successive groups of thread paths in multi-spindle textile apparatus are equipped with individual monitoring systems. In each system, a joint monitoring element (S,E,L) is provided which has a...
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4888944 |
Process and apparatus for production and quality control in multi-spindle textile machines
A common monitoring system with a light beam is provided for a group of two or more production units arranged in a row. The beam passes through the thread balloon formed by the moving thread of...
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4881062 |
Yarn break detector for spinning and weaving machines
A device for detecting break of any of a plurality of yarns arranged closely to each other in a spinning or weaving machine such as loom, knitting machine, warping machine, etc., includes sensor...
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4873511 |
Device for forecasting breakage cables in an industrial robot
An industrial robot and a device for forecasting breakage of cables, which is capable of predicting the time of breakage of cables provided between a control section and arm drive sections in the...
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4860558 |
Monitoring circuit for a knitting machine
A monitoring circuit for a knitting machine with at least one yarn feeding arrangement comprises two yarn monitoring devices which are provided with switches and connected via a first rectifier...
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4841784 |
Method and apparatus for monitoring the tensile force on a thread
A device for monitoring the tension on a thread comprises a frame for retaining the thread; a leaf spring on the frame for bearing against the thread and being displaced thereby as a function of...
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4827216 |
Differential triple-coil tester for wire rope with periodic lay effect cancellation
An electrical coil driven by an alternating current develops an alternating magnetic field. A segment of a wire-rope specimen is placed next to and on the axis of the coil, but perpendicular to the...
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4827090 |
Device for monitoring yarn reserve on yarn spools
A device for monitoring a yarn reserve on a stationary yarn spool from which the yarn is being pulled off, including a feeler applied to the end face of the yarn package and coupled to a swinging...
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4825158 |
Method of detecting conductive material contained in glass fiber by detecting changes in amplitude and frequency of an oscillator and detecting apparatus therefor
A method and apparatus for detecting conductive material contained in glass fiber, in which it is possible to detect fine conductive material contained in glass fiber under the condition that the...
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4817678 |
Broken warp thread locator
The location of a warp thread break in a weaving loom using electrically conductive drop wires bridging an electrode pair upon occurrence of a warp thread break includes applying opposing known...
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4814633 |
Yarn storing device
A yarn storing device (1) comprises a storage drum (2) and a sensor (5) arranged at the withdrawal end (3) of the storage drum (2). The sensor (5) has the form of an eyelet (6) for guiding the yarn...
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4807829 |
Combined yarn tensioning control and stop motion unit
A combined ball tension control and stop motion unit in which the exit opening of the ball housing of the ball tension control component is mounted to the stop motion component. An interior yarn...
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4797662 |
Wire prebreak/break detector
A wire prebreak/break sensor is disclosed for use in a low cost verbal annunciator system for use in monitoring a wire fabrication process. Wire exiting a drawing machine is accumulated and has its...
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4774673 |
Method for monitoring yarn quality on a textile machine
Method for the simultaneous monitoring of yarn quality on a number of similar monitoring points of a textile machine, in which each monitoring point uses one measuring element together with the...
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4764876 |
Profile analyzer for filamentary materials
A device for analyzing the characteristics of filamentary material while the filamentary material moves at high speed, and a method for using the device. The material is moved past a sensing array...
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4720702 |
Method and apparatus for monitoring the tension of an advancing yarn
The yarn tension at each of a plurality of yarn processing stations is continuously monitored, while continuously determining the mean value of the monitored tension at each station, and while also...
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4713655 |
Method of monitoring the quality of a package of thread
Logic signals corresponding to a detected thread break and/or thread loop in a package being wound on a bobbin are evaluated within a logic circuit to communicate the quality of a thread package....
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4710646 |
Thread movement sensor
The invention relates to a thread movement sensor comprising an arm with at least one thread guide. The invention solves the problem of sensitivity of the sensor to the vibrations of the machine by...
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4695830 |
Wire runtogether sensor
A runtogether sensor comprising a balanced beam having a plurality of tines for insertion between a plurality of parallel wires in motion for sensing a pair of stuck together wires by means of a...
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4656465 |
Method and arrangement for evaluating the performance of a yarn processing machine
An arrangement for evaluating the performance of a yarn processing machine including a plurality of yarn processing stations that are individually operatable and each of which includes a monitoring...
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4635046 |
Wire tangle sensor
A wire tangle sensor is disclosed for sensing tangled wire in a wire fabrication process prior to being fed into a wire drawing machine so that a tangled wire signal may be sent to a verbal...
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4582968 |
Needle thread-break monitor for embroidery machines
The needle thread-break monitor for embroidery machines comprises a double-armed rocking lever acting as a switch in an electrical circuit of an alarm system. The rocking lever is mounted on a...
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4571582 |
Fault pre-warning device for use in carpet manufacturing machines
A fault pre-warning device for use in tufting machines has a switching strip (11) over which the carpet web is guided in such a way that the switching strip (11) is acted on by a defined force in...
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