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1. 发明授权

US4599957A Looper actuating device for sewing machines 失效
标题翻译：缝纫机驱动装置
公开(公告)号：US4599957A
公开(公告)日：1986-07-15
申请号：US756175
申请日：1985-07-18
申请人： Ulderico Marcandalli
发明人： Ulderico Marcandalli
IPC分类号： D05B57/32 , D05B57/02 , D05B1/06 , D05B57/04
CPC分类号： D05B57/02
摘要： A looper operating device for sewing machines in which the looper is provided with forward movement and the machine's needle possesses work feeding movement which is synchronized and caused to perform its intended function simultaneously with the machine's feed dog. The device includes a lever member having an upper fulcrum to which actuating linkage for the looper are connected. The opposite end of the lever member includes a lower fulcrum 25 connected to a lever element mounted on a shaft that is operatively connected to and simultaneously actuates both the feed dog and needle. This lever element is stationary when the stitch length is zero or is oscillating with an amplitude proportional to the stitch length. The lever member includes an intermediate fulcrum 27 connected to an oscillating member of constant amplitude which is equivalent to the oscillation of the looper whereby for a zero stitch length, the start of the arc defined by the tip of the looper is fixed, and when increasing the stitch length, the start of the arc is proportionally moved from the vertical that passes through the lower dead point of the needle and occurs in a reverse manner when the stitch length is reduced.
摘要翻译：一种用于缝合机的活套装置操作装置，其中活套具有向前运动，机器针具有同步的工作进给运动，并使其与机器的进给狗同时执行其预期功能。该装置包括具有上部支点的杠杆构件，连杆的作用联动装置连接到上支点。杠杆构件的相对端包括连接到安装在轴上的杠杆元件的下支点25，该杠杆元件可操作地连接到并同时致动进给爪和针。当针迹长度为零或振幅与针迹长度成正比的振幅时，该杠杆元件是静止的。杠杆构件包括连接到恒定振幅的摆动构件的中间支点27，其相当于弯针的振动，由此针对零针迹长度，由弯针的尖端限定的电弧的起始点是固定的，并且当增加针迹长度，电弧的起始部分从穿过针的下死点的垂直线成比例地移动，并且当针迹长度减小时以相反的方式发生。

2. 发明授权

US4616585A Device providing for three sewing machine needle strokes 失效
标题翻译：设备提供三台缝纫机针针
公开(公告)号：US4616585A
公开(公告)日：1986-10-14
申请号：US793824
申请日：1985-11-01
申请人： Ulderico Marcandalli
发明人： Ulderico Marcandalli
IPC分类号： D05B55/14 , D05B3/02
CPC分类号： D05B3/02 , Y10T74/2179
摘要： A needle bar actuating device for double chain stitch and/or overlock sewing machines provided with a driving crank, one crank pin of which has three angularly differentiated reference surfaces in order to define an equal number of positions and lengths for said driving crank with respect to its axis of rotation; to each of said positions and lengths corresponding a different predetermined stroke length of the needle bar.
摘要翻译：一种用于双链式针迹和/或包缝缝纫机的针杆致动装置，其具有驱动曲柄，其一个曲柄销具有三个有角度分化的参考表面，以便相对于所述驱动曲柄限定相等数目的位置和长度其旋转轴; 每个所述位置和长度对应于针杆的不同的预定行程长度。

3. 发明授权

US4178864A Looper control apparatus for sewing machines 失效
标题翻译：缝纫机Looper控制装置
公开(公告)号：US4178864A
公开(公告)日：1979-12-18
申请号：US840084
申请日：1977-10-06
申请人： Ulderico Marcandalli
发明人： Ulderico Marcandalli
IPC分类号： D05B3/02 , D05B57/02 , D05B3/00 , D05B57/32
CPC分类号： D05B57/02
摘要： An apparatus for controlling movement of a looper while forming zig-zag stitches in a sewing machine. The apparatus is provided with a first drive device for moving and maintaining the looper in alignment with the machine's needle and a second drive device for causing the looper to travel in planes which are parallel when moving to cooperate with the needle in each of its stitch forming positions.
摘要翻译：一种用于在缝纫机中形成锯齿形针迹的同时控制弯针的运动的装置。该装置设有第一驱动装置，用于移动和保持打针器与机器的针对齐;第二驱动装置，用于使得弯针在平行的平面中移动以在每个针迹形成中与针配合时，行进职位

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