Lifting control for slidable presser foot
    1.
    发明授权
    Lifting control for slidable presser foot 失效
    可滑动压脚的起重控制

    公开(公告)号:US5596941A

    公开(公告)日:1997-01-28

    申请号:US608253

    申请日:1996-02-28

    申请人: Jan-Olof Landen

    发明人: Jan-Olof Landen

    CPC分类号: D05B29/02 D05B29/12

    摘要: An arrangement in a sewing machine including a fabric feed dog (14; 44) for feeding a fabric to be sewn, and a vertically movable presser bar (12; 42) having a presser foot (13; 43; 63) and a presser spring (23; 53). The presser bar is actuatable by a power-driven actuator(19; 49) connected to the presser spring and slidable in parallel with the presser bar. The actuator is movable relative to the presser bar to adjust the presser foot pressure and operatively connected to the presser bar to raise and lower the presser foot during the sewing procedure in accordance with a predetermined program. In one embodiment, the presser foot (13, 43) is slidable to follow the fabric during the feeding step. In another embodiment, the presser foot (63) is provided with a top feed ruffler (69, 70) for forming tucks or pleats in the fabric being sewn.

    摘要翻译: 一种缝纫机中的布置,包括用于供给要缝制的织物的织物进给爪(14; 44)和具有压脚(13; 43; 63)的可垂直移动的压杆(12; 42)和压脚弹簧 (23; 53)。 压杆可通过连接到压脚弹簧的动力驱动致动器(19; 49)致动,并可与压杆平行滑动。 致动器可相对于压杆移动,以调节压脚压力,并可操作地连接到压脚杆,以根据预定程序在缝纫过程期间升高和降低压脚。 在一个实施例中,在进给步骤期间,压脚(13,43)可滑动以跟随织物。 在另一个实施例中,压脚(63)设置有用于在正在缝制的织物中形成褶皱或褶皱的顶部进料浮子(69,70)。

    Sewing machine having presser foot lifting device for adjusting a
presser foot between first, second, and third positions
    2.
    发明授权
    Sewing machine having presser foot lifting device for adjusting a presser foot between first, second, and third positions 失效
    具有用于在第一,第二和第三位置之间调节压脚的压脚提升装置的缝纫机

    公开(公告)号:US5461997A

    公开(公告)日:1995-10-31

    申请号:US227669

    申请日:1994-04-14

    申请人: Jan-Olof Landen

    发明人: Jan-Olof Landen

    IPC分类号: D05B29/02

    CPC分类号: D05B29/02

    摘要: A sewing machine of the type having an electronic control unit is provided with an arrangement comprising a needle mechanism with a needle bar, a presser bar (12) provided with a presser foot (13) and actuated by a resilient means (22) to provide a controllable presser foot pressure on the cloth (28) to be sewn, and a lifting device for adjusting the presser foot between its operative position and an inoperative position spaced from the cloth. According to the invention, the lifting device comprises a power driven lifting lever (15) coacting with the presser bar (12) for adjusting the presser foot (13) between said two positions and a third, operative position, in which the presser foot pressure is relieved, and the lifting lever (15) is operatively connected to said resilient means (22) for controlling the presser foot pressure.

    摘要翻译: 具有电子控制单元的类型的缝纫机设置有包括具有针杆的针机构的装置,设置有压脚(13)并由弹性装置(22)致动的压杆(12),以提供 可缝制的布(28)上的可压缩压脚;以及用于在其操作位置和与布隔开的不工作位置之间调节压脚的提升装置。 根据本发明,提升装置包括与压杆(12)共同作用的用于调节所述两个位置之间的压脚(13)的动力提升杆(15)和第三操作位置,在该位置中,压脚压力 卸载,并且提升杆(15)可操作地连接到所述弹性装置(22),以控制压脚压力。