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1. 发明授权

US4343256A Sewing machine 失效
标题翻译：缝纫机
公开(公告)号：US4343256A
公开(公告)日：1982-08-10
申请号：US150836
申请日：1980-05-19
申请人： Armin Neuweiler , Otmar Stillhard
发明人： Armin Neuweiler , Otmar Stillhard
IPC分类号： D05B69/26 , D05B69/22 , F16D13/02
CPC分类号： D05B69/22 , F16D13/025
摘要： A sewing machine having a torsion spring coupling between drive and machine shaft. An engageable catch pawl acts on a stop element connected to the drive, which stop element is connected to the drive side of the coupling spring of the drive. If the catch pawl is engaged with the machine in operation and the stop element is blocked, the coupling spring is released and hence the coupling disengaged. The motor may then run down while the motor shaft is stopped resiliently in a predetermined position via the coupling spring which simultaneously the coupling spring prevents excessive forces from occurring due to inertia and excess stressing. Hence this construction permits the motor to be stopped rapidly from full operation with simple means.
摘要翻译：一种缝纫机，其在驱动机和机轴之间具有扭转弹簧联接。可接合的卡爪作用在连接到驱动器的止动元件上，该止动元件连接到驱动器的联接弹簧的驱动侧。如果抓爪与操作中的机器接合并且止动元件被阻塞，则联接弹簧被释放，因此联接器脱离。然后马达可以在电动机轴通过联接弹簧弹性地停止在预定位置的同时下降，同时联接弹簧防止由于惯性和过度应力而产生过大的力。因此，这种结构允许电动机通过简单的手段快速停止全面操作。

2. 发明授权

US4183473A Mechanism for coupling a drive to a shaft 失效
标题翻译：将驱动器连接到轴的机构
公开(公告)号：US4183473A
公开(公告)日：1980-01-15
申请号：US858449
申请日：1977-12-07
申请人： Armin Neuweiler , Jakob Rickenbach
发明人： Armin Neuweiler , Jakob Rickenbach
IPC分类号： D05B69/34 , F16D1/06 , F16D19/00 , B65H54/18
CPC分类号： D05B69/34 , F16D1/06
摘要： A mechanism for coupling and uncoupling a driven rotatable drive wheel from a rotatable shaft, particularly, the arm shaft of a sewing machine from its associated drive wheel in order to spool up the lower thread, comprises a rotatable shaft which has an annular collar portion which is frictionally engageable by a drive wheel which is freely rotatable on the shaft. The drive wheel is continuously driven from a drive, such as a belt, and it may be urged into engagement with the collar by means of a nut which is threaded onto the end of the shaft. The arrangement includes a stop disc which has a cam surface which is engageable with a stop defined on the nut end face in a recess thereof. The cam surface and the stop define a cam structure which permits rotation of the nut so as to permit frictional engagement of the drive wheel with the shaft collar for driving the shaft and the disengagement thereof by rotation of the nut in a reverse direction. The amount of movement permitted to the nut is such to permit easy engagement or disengagement of the drive shaft without moving the nut to such a degree that, for example, it may cause the drive wheel to disengage from the frictional drive with another rotatable mechanism, such as a spooling device.
摘要翻译：用于将可驱动的可旋转驱动轮从可旋转轴，特别是缝纫机的臂轴从其相关联的驱动轮联接和解耦以便卷起下螺纹的机构包括可旋转轴，其具有环形套环部分，通过可在轴上自由旋转的驱动轮摩擦地接合。驱动轮从诸如皮带的驱动器连续驱动，并且可以通过螺纹连接到轴的端部上而被推动与套环接合。该装置包括止动盘，该止动盘具有凸轮表面，该凸轮表面可与限定在其凹部中的螺母端面上的止动件接合。凸轮表面和止动件限定凸轮结构，其允许螺母的旋转，以便允许驱动轮与用于驱动轴的轴环摩擦接合，并且通过螺母沿相反方向旋转而脱离。允许到螺母的移动量允许驱动轴容易地接合或脱开，而不会使螺母移动到例如可能导致驱动轮与摩擦驱动器与另一可旋转机构分离的程度，例如假脱机装置。

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