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    • 11. 发明授权
    • Presser bar guide
    • 压条指南
    • US4323024A
    • 1982-04-06
    • US141879
    • 1980-04-21
    • Gary D. JonesManfred R. LaidigWilliam Weisz
    • Gary D. JonesManfred R. LaidigWilliam Weisz
    • D05B29/00D05B29/02
    • D05B29/02
    • A hollow bushing (22 or 54) that guides a presser bar (21) to move in a longitudinal direction is threaded at one end (29 and 30). The outer surface of that end is round and, below the thread (59), fits closely but rotatably in a channel (32) in the head (16) of a sewing machine. The bushing is not fixedly held in place in the channel (32). Instead, a tension spring (33) screwed onto the threaded end and onto a threaded member (37) attached to the end of the presser bar (21) within the head (16) pulls the presser bar downwardly so that its foot (24) normally presses against the work (46) and simultaneously pulls the bushing (22 or 54) toward the head (16). A shoulder surface (27 or 58) at a certain location on the bushing (22 or 54) acts as a stop to limit the extent that the cylinder can be drawn into the head. The spring (33) is fully screwed onto the threaded sleeves (30 and 36) until the ends of the spring butt against surfaces (34 and 40), eliminating operator-adjusted presser foot pressure and simiplying the presser foot pressure mechanism.
    • 引导压杆(21)沿纵向移动的中空衬套(22或54)在一端(29和30)处是螺纹的。 该端部的外表面是圆形的,并且在线(59)下方紧密但可旋转地配合在缝纫机的头部(16)中的通道(32)中。 衬套没有固定地保持在通道(32)中的适当位置。 相反,拧在螺纹端上并连接到头部(16)内的压杆(21)的端部上的螺纹构件(37)上的拉伸弹簧(33)将压脚向下拉,使得其脚部(24) 通常压靠工件(46)并同时将衬套(22或54)拉向头部(16)。 在衬套(22或54)上的某个位置处的肩部表面(27或58)用作止挡件,以限制气缸能够吸入头部的程度。 弹簧(33)完全旋拧到螺纹套筒(30和36)上,直到弹簧的端部对接表面(34和40),消除了操作者调节的压脚压力并且使压脚压力机构变形。
    • 12. 发明授权
    • Interposer hook drive for sewing machines
    • 插入式挂钩驱动缝纫机
    • US3949690A
    • 1976-04-13
    • US612816
    • 1975-09-12
    • William Weisz
    • William Weisz
    • D05B57/14D05B57/36
    • D05B57/36D05B57/143
    • This disclosure relates to means for providing adjustment of the needle to hook point relationship in a sewing machine without disturbing the proper mesh and timing of the gears used in the drive mechanism for the hook. The hook includes a shaft supported in a bushing which has a bore having an axis eccentric to the axis of the bushing body. An interposer member is operatively connected to the drive mechanism and is disposed coaxially with the hook shaft for transmitting driving motion to the hook shaft. The hook point is adjustable relative to the needle by means of rotation of the hook bushing about its axis which thereby changes the relative position of the hook and its shaft without causing any change in the relative driving relationship of the interposer and the drive mechanism thereby unaffecting the timing of the hook drive mechanism.
    • 本公开涉及用于在缝纫机中提供针对钩点关系的调节的装置,而不会干扰用于钩的驱动机构中使用的齿轮的适当的网孔和正时。 钩包括支撑在衬套中的轴,其具有具有偏心于衬套主体的轴线的轴的孔。 内插器构件可操作地连接到驱动机构,并且与钩轴同轴设置,用于将驱动运动传递到钩轴。 钩点可以通过钩套筒绕其轴线的旋转而相对于针可调节,从而改变钩及其轴的相对位置,而不会引起插入器和驱动机构的相对驱动关系的任何变化,从而不受影响 挂钩驱动机构的时机。