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公开(公告)号：US3654883A
公开(公告)日：1972-04-11
申请号：US3654883D
申请日：1970-05-14
发明人： REIMER GEORGE M , KLOSE FREDERICK M
CPC分类号： D05B47/00
摘要： This disclosure relates to a thread control mechanism for sewing machines which will permit the machine operator to adjust the tightness of the stitch in accordance with the requirements of the particular work being sewn. The needle thread control mechanism includes a bracket plate which is conveniently mountable on a conventional sewing machine frame and which has mounted thereon an eyelet assembly for movement along a predetermined path and selected positioning thereof along such path so as to vary the extent of a thread loop which is formed between a thread tensioning device and the needle lever thread eyelet of the sewing machine, thereby controlling the tightness of the stitch being formed.
摘要翻译： 本公开涉及一种用于缝纫机的线程控制机构，其允许机器操作者根据正在缝制的特定工作的要求来调整针迹的紧密度。 针线控制机构包括支架板，该支架板可方便地安装在传统缝纫机框架上，并且其上安装有用于沿着预定路径移动的孔眼组件，并沿着该路径选择定位，以便改变螺纹环的程度 其形成在缝纫机的线张紧装置和针杆螺纹孔之间，从而控制正在形成的线圈的紧密性。
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公开(公告)号：US3623441A
公开(公告)日：1971-11-30
申请号：US3623441D
申请日：1969-11-21
发明人： SCHOIJ EDGAR , KLOSE FREDERICK M
IPC分类号： D05B29/00
CPC分类号： D05B29/00
摘要： This disclosure relates to a low-inertia adjustable stroke presser foot for sewing machines which is operable to feed the uppermost ply of superimposed plies being sewn to compensate for the drag exerted by the presser foot sole upon the upper ply. The presser foot is automatically driven through its cooperation with the feed dog and effects the feeding of the upper ply at the termination of the work feeding action of the feed dog. The presser mechanism is adjustable to vary the work feeding movement of the presser foot in accordance with the requirements of the fabric being sewn.
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