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| Number | Title | Issue Date |
| 5247184 | Photoelectric bobbin sensor with retroreflective filament presence detection Photoelectric sensing apparatus is operative for sensing the absence of filament at a particular point on a supply bobbin wherein several strands of filament will still be present on the bobbin. The sensing apparatus includes a light source which directs ... | 09/21/1993 |
| 5212389 | Apparatus for recognizing residual yarn remaining on textile bobbins after unwinding utilizing a sensing device comprising a photooptic detector with a receiver lens The presence of residual yarn on textile bobbins is recognized by a device capable of optically sensing and distinguishing yarn from a supporting bobbin or tube, which device is movable lengthwise along the bobbin or tube to perform a sensing operation. T... | 05/18/1993 |
| 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 (4) and generates a signal during the withdrawal of yarn ... | 03/21/1989 |
| 4276910 | Photoelectrical bobbin feeler A photoelectrical bobbin feeler, in particular weft bobbin feeler, comprises one light source and two light sensors, or vice versa, two light sources and one light sensor. At least one polaroid filter is arranged in front of the one light source, or one l... | 07/07/1981 |
| 4237807 | Thread monitoring device for the thread supply of a rotary hook of a sewing machine A thread monitoring device for monitoring the thread supply in a sewing machine, having a rotary hook, comprises, a hook body with a thread bobbin having thread thereon which is connected to a rotatable shaft for rotation thereby. The hook includes a stat... | 12/09/1980 |
| 4221242 | Optical filling or weft bobbin feeler An optoelectrical filling or weft bobbin feeler on a shuttle weaving machine, provided with a light source and a light sensor located in a casing which comprises at least one wall mounted in parallel relationship to the shuttle race. Light source and ligh... | 09/09/1980 |
| 4188545 | Yarn processing, method and apparatus The present invention relates in general to yarn processing and in particular to a method and apparatus for detecting unwanted yarn wraps on rotating rolls and consequently severing the supply yarn to prevent further wraps being wound.... | 02/12/1980 |
