公开(公告)号：US4037548A

公开(公告)日：1977-07-26

申请号：US519243

申请日：1974-10-30

申请人： Tetsuro Hirayama ,  Kousuke Yuyama ,  Yoshihiko Matsuura

发明人： Tetsuro Hirayama ,  Kousuke Yuyama ,  Yoshihiko Matsuura

IPC分类号： D05B37/06 ,  D05B37/00

CPC分类号： D05B37/063

摘要： A knife operating device for sewing machines includes a needle stub pivotally mounted to the front part of a rocking arm. The rocking arm intersects with a needle stub guiding bar and is pivotally mounted and its rear end. A knife holder is, also, connected to the rocking arm and is guided so as to be movable with the needle stub.

摘要翻译： 用于缝纫机的刀操作装置包括可枢转地安装到摇臂前部的针短针。 摆臂与针针引导杆相交，并可枢转地安装在其后端。 刀架也与摇臂连接并被引导以便能够与针头一起移动。

公开(公告)号：US3967565A

公开(公告)日：1976-07-06

申请号：US551427

申请日：1975-02-20

申请人： Tetsuro Hirayama ,  Kousuke Yuyama ,  Yoshihiko Matsuura

发明人： Tetsuro Hirayama ,  Kousuke Yuyama ,  Yoshihiko Matsuura

IPC分类号： D05B27/08

CPC分类号： D05B27/08

摘要： A cloth feeding device for a sewing machine and a method of adjusting the differential ratio of feeding cloth, in any desired wide range, particularly, in an overlock sewing machine. There is disclosed herein a mechanism wherein a cloth feeding arm is engaged with a vertically feeding cam fixed to a main shaft and is further connected with an eccentric horizontally feeding cam. The feeding cam comprises a flanged cam member frictionally fixed to the main shaft and an internal surface cam externally fitting it through a link mechanism. The link mechanism comprises a horizontally feeding rocker arm and a horizontally feeding rod so that the horizontal feed of the cloth feeding arm may be simply and freely adjusted by varying the phase of the eccentric double cam with an operating piece which can be operated from outside the sewing machine frame. The present invention, also, also contemplates a method of obtaining a differential adjusting ratio of feeding cloth in a wide range by setting two of such adjusting mechanisms within a sewing machine frame so as to be able to be operated independently of each other and making the respective adjusted amounts correspond to each other by utilizing the possibility of the independent adjustment. Also disclosed is a device for achieving the method.

摘要翻译： 一种用于缝纫机的送布装置和一种在任何期望的宽范围内，特别是在包缝机中调整送布差速比的方法。 这里公开了一种机构，其中布料供给臂与固定到主轴上的垂直进给凸轮接合，并且还与偏心水平进给凸轮连接。 进给凸轮包括摩擦地固定到主轴的凸缘凸轮构件和通过连杆机构从外部装配的内表面凸轮。 连杆机构包括水平进给摇臂和水平进给杆，使得可以通过用可从外侧操作的操作件改变偏心双凸轮的相位来简单且自由地调节送布臂的水平进给 缝纫机架。 本发明还考虑通过在缝纫机框架内设置两个这样的调节机构以便能够彼此独立地操作而获得在宽范围内的送布的差动调节比的方法，并使 相应的调整数量通过利用独立调整的可能性彼此对应。 还公开了一种用于实现该方法的装置。