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公开(公告)号:US3602457A
公开(公告)日:1971-08-31
申请号:US3602457D
申请日:1969-11-17
申请人: JOHN W NICHOLS , ILA L NICHOLS
发明人: NICHOLS JOHN W , NICHOLS ILA L
CPC分类号: B65H49/26 , B65H2701/31
摘要: Apparatus for vertically supporting a spool or cylinder wound with thread such as used for crochet work in such manner that the thread can be unwound smoothly and continuously without tangling or snarling or tugging of any kind.