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公开(公告)号:US3913508A
公开(公告)日:1975-10-21
申请号:US53194774
申请日:1974-12-12
发明人: BOSER RONALD J
CPC分类号: D05B55/16
摘要: A pneumatically actuated needle bar mechanism for use in a twoneedle sewing machine of the vertical hook lockstitch type is disclosed. The pneumatically actuated needle bar mechanism selectively controls the position of either or both needles and positively locks either or both needles in either the sewing (engaged) position or the non-sewing (disengaged) position. The mechanism is controlled by pedal operated remote pneumatic valves.
摘要翻译: 公开了一种用于垂直钩状平缝型双针缝纫机的气动针杆机构。 气动致动的针杆机构选择性地控制一个或两个针的位置,并且在缝合(接合)位置或非缝合(脱离)位置中肯定地锁定任一个或两个针。 该机构由踏板操作的远程气动阀控制。