| 摘要 |
<p>A sensing roll (10) particularly useful for detecting breakage and absence of running filament yarn ends (44). The roll (10) comprises a housing (14) seated upon a center post (12) such that it rotates relative to the center post (12) in a first direction to activate a signal device (28) when a yarn end breaks or is missing. When a yarn end (44) frictionally engages the housing (14), it rotates in a second direction and deactivates the signal device (28).</p> |
