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    Electromotive variable-speed and control drive particularly for use in industrial sewing machines
    1.
    发明授权
    Electromotive variable-speed and control drive particularly for use in industrial sewing machines 失效
    电动变速和控制驱动，特别适用于工业缝纫机

    公开(公告)号：US4709794A

    公开(公告)日：1987-12-01

    申请号：US836258

    申请日：1986-03-05

    申请人： Karl Lengsfeld ,  Erich Link ,  Adolf Martin ,  Hilmar Wittler

    发明人： Karl Lengsfeld ,  Erich Link ,  Adolf Martin ,  Hilmar Wittler

    IPC分类号： D05B69/12 ,  F16D67/06 ,  H02K7/112

    CPC分类号： H02K7/1125 ,  D05B69/125 ,  F16D67/06

    摘要： An electromotive variable-speed and control drive particularly for use in industrial sewing machines and comprising a coupling coil casing radially surrounding a coupling-brake disk and a brake coil casing radially relocated towards the center. Both are positioned in the brake end shield. In order to avoid a sticking of the coupling-brake disk with high alternations and a delay of the break-down and build-up of the magnetic fields, a brake coil casing has been relocated radially so near to the center that it is situated within the brake pad in front of the armature ring. On the other hand, there is an undercut and a recess at the coupling coil casing and a recess at the disk flywheel which assures that no axial forces can occur at the radial gaps.

    摘要翻译： 一种电动变速和控制驱动器，特别用于工业缝纫机，并且包括径向围绕耦合制动盘的耦合线圈壳体和朝向中心径向重新定位的制动器线圈壳体。 两者均位于制动端盖中。 为了避免高度交替的联结制动盘的粘附和磁场的分解和积聚的延迟，制动盘管壳体被径向地定位在靠近其位于的中心附近 电枢环前面的刹车片。 另一方面，在耦合线圈壳体处存在底切和凹陷，并且在盘形飞轮处存在凹部，其确保在径向间隙处不产生轴向力。

    Convertible bed for sewing machines
    3.
    发明授权
    Convertible bed for sewing machines 失效
    缝纫机敞篷床

    公开(公告)号：US4009671A

    公开(公告)日：1977-03-01

    申请号：US671807

    申请日：1976-03-30

    申请人： Hilmar Wittler ,  Adolf Martin

    发明人： Hilmar Wittler ,  Adolf Martin

    IPC分类号： D05B73/00 ,  D05B73/10

    CPC分类号： D05B73/00

    摘要： A convertible sewing machine bed which includes a base having a longitudinally extending cylinder bed and a spring biased work supporting panel that is movable in one direction with respect to the arm and simultaneously shiftable in another direction with respect to the cylinder bed. The shifting movement is effected by the camming action of a single latch detent being moved into and out of a latch seat. The single latch detent and the latch seat, when in engaging relation, also serve to hold the support member in a work supporting position contiguous to the cylinder bed.

    摘要翻译： 一种可转换缝纫机床，其包括具有纵向延伸的气缸床的底座和弹簧偏压的工作支撑面板，所述基座可相对于所述臂在一个方向上移动，并且可相对于气缸床在另一方向上移动。 移动运动通过单个闩锁棘爪移动进入和离开闩锁座的凸轮动作来实现。 当处于接合关系时，单个闩锁止动器和闩锁座也用于将支撑构件保持在与气缸床相邻的工件支撑位置。

    Electric motor regulating and control drive having a clutch-brake unit
    4.
    发明授权
    Electric motor regulating and control drive having a clutch-brake unit 失效
    具有离合器制动单元的电动机调节和驱动

    公开(公告)号：US4823926A

    公开(公告)日：1989-04-25

    申请号：US94147

    申请日：1987-09-08

    申请人： Hilmar Wittler ,  Adolf Martin ,  Herbert Palloch

    发明人： Hilmar Wittler ,  Adolf Martin ,  Herbert Palloch

    IPC分类号： D05B69/12 ,  F16D27/112 ,  F16D65/00 ,  F16D67/06 ,  H02K7/112 ,  F16D69/04

    CPC分类号： H02K7/1125 ,  D05B69/125 ,  F16D27/112 ,  F16D65/0006 ,  F16D67/06

    摘要： In an electric motor regulating and control drive, especially for industrial sewing machines, a clutch-brake disk is mounted for co-rotation on an output shaft and has a clutch facing which can be brought into engagement with a clutch surface of a flywheel of the corresponding motor, and has a brake facing which can be brought into engagement with a brake surface of a brake-bearing plate. In order to achieve by simple means an effective suppression of impact noises when a braking action is initiated, at least the brake facing is mounted with damping with respect to the armature ring of the clutch-brake disk. It is preferably thrust against the armature ring by means of at least one annular spring.

    摘要翻译： 在电动机调速驱动中，特别是对于工业缝纫机而言，离合器制动盘安装成在输出轴上共同旋转，并且具有可以与离合器制动盘的离合器表面接合的离合器 相应的电动机，并且具有能够与制动支承板的制动表面接合的制动器。 为了通过简单的手段实现当制动动作开始时有效地抑制冲击噪声，至少制动器面板相对于离合器 - 制动盘的电枢环安装有阻尼。 优选通过至少一个环形弹簧推靠在电枢环上。