| 摘要 |
<p>1382167 Strand winding; tension control LEESONA CORP 18 Feb 1972 [23 Feb 1971] 7532/72 Headings DID and D1J Strand 10 is forwarded by driven roll 12, passed around pulley 14 on dancer arm 16, and is traversed by guide 20 onto package 22. Motor 38, driving guide-traversing cam drum 26 and package drive roll 24, is controlled by the pivoting of arm 16 to maintain thread tension constant. Alternatively, the cam drum may be in driving contact with the package, and the running thread may be supported on an air cushion to even out tension peaks.</p> |
