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    • 2. 发明授权
    • Bobbin thread tensioning device for a sewing machine
    • 缝纫机绕线机张紧装置
    • US4331090A
    • 1982-05-25
    • US152577
    • 1980-05-23
    • Susumu HanyuYoshinobu TonomuraHideaki TakenoyaMasanori Hara
    • Susumu HanyuYoshinobu TonomuraHideaki TakenoyaMasanori Hara
    • D05B63/00D05B47/04
    • D05B63/00
    • A device for automatically adjusting the tension of a lower thread, which comprises a lower thread bobbin arranged on a bottom plate of a bobbin carrier turnably carrying the bobbin, a loop taker mounted on a magnetic shaft, and an energizing coil arranged around the magnetic shaft and providing together with said bottom plate and magnetic shaft a path of magnetic flux. The device is further provided with a detector detecting the consumed amount of the bobbin thread and a control circuit for energizing the coil when the lower thread is wound to the maximum capacity of the bobbin, interrupting the light of the detector. The detector operates the control circuit to decrease the amount of electric current applied to the energizing coil so as to set the lower thread tension back to its initial predetermined value.
    • 一种用于自动调节下线张力的装置,包括一个布置在可转动地承载线轴的筒管架的底板上的下线筒管,一安装在磁轴上的环形接收器,以及设置在磁力轴周围的通电线圈 并与所述底板和磁轴一起提供磁通的路径。 该装置还设置有检测底线消耗量的检测器,以及当下线缠绕在线轴的最大容量上时对线圈通电的控制电路,中断检测器的光。 检测器操作控制电路以减少施加到通电线圈的电流量,以将下线张力设置回其初始预定值。
    • 3. 发明授权
    • Apparatus for writing and using embroidery information on magnetic tape
    • 用于在磁带上书写和使用刺绣信息的装置
    • US4290375A
    • 1981-09-22
    • US81321
    • 1979-10-03
    • Yoshinobu TonomuraToshio FujimuraMasanori HaraHideaki Takenoya
    • Yoshinobu TonomuraToshio FujimuraMasanori HaraHideaki Takenoya
    • D05B21/00
    • D05B21/00
    • An automatic embroidery machine is driven by information recorded on magnetic tape and utilizes a fixed sewing machine and a movable embroidery frame. An input apparatus registers user-selected points on a coordinate analysis panel, which points form embroidery patterns to be sewn, and causes embroidery information to be recorded upon magnetic tape for subsequent use in the automatic embroidery machine. The automatic embroidery machine and the input apparatus are so designed that after a continuous part of an embroidery pattern has been sewn, the embroidery frame will be moved to a next continuous part of a pattern and the automatic embroidering machine will stop, providing an opportunity for a user to change thread. The automatic embroidering machine cannot be restarted unless the user operates a controller, ensuring safe operation.The automatic embroidery machine is provided with a temporary memory, into which embroidery information is written while the magnetic tape is being read, and from which embroidery information is read out while the automatic embroidering machine is embroidering patterns. The input apparatus is so designed that when an amount of embroidery information corresponding to the predetermined capacity of the temporary memory has been recorded on the magnetic tape, a blank signal is next recorded thereon. The magnetic tape is repeatedly started and stopped, so that embroidery information is transferred in packets into and out of the temporary memory. This operation allows temporary memory capacity to be minimized, reducing cost.
    • 自动绣花机由记录在磁带上的信息驱动,并使用固定缝纫机和可移动绣花框架。 输入装置将用户选择的点记录在坐标分析面板上,该点指向要缝制的绣花图案,并且将刺绣信息记录在磁带上以供随后在自动绣花机中使用。 自动绣花机和输入装置的设计使得在绣花图案的连续部分被缝合之后,刺绣框架将移动到图案的下一个连续部分,自动绣花机将停止,为 用户更改线程。 除非用户操作控制器,否则无法重新启动自动绣花机,确保安全操作。 自动绣花机设有一个临时存储器,在读取磁带的同时写入刺绣信息,并且在自动绣花机绣花图案的同时从中读出刺绣信息。 该输入装置被设计成当与临时存储器的预定容量相对应的刺绣信息的数量已被记录在磁带上时,下一个记录空白信号。 磁带被重复地启动和停止,使得刺绣信息被分组传送到临时存储器中和从临时存储器传出。 该操作允许临时存储器容量最小化,从而降低成本。
    • 5. 发明授权
    • Sewing machine with thread-tension control system
    • 缝纫机带线张力控制系统
    • US4289087A
    • 1981-09-15
    • US80070
    • 1979-09-28
    • Hideaki TakenoyaKazuo WatanabeTamotsu NakagawaYoshinobu Tonomura
    • Hideaki TakenoyaKazuo WatanabeTamotsu NakagawaYoshinobu Tonomura
    • D05B47/00D05B47/04
    • D05B47/00
    • The tension of the sewing machine's upper thread is varied automatically, in a variety of ways not requiring conscious participation on the part of the user of the machine. When one of a set of selectable stitch-patterns is selected by the user, an appropriate thread-tension value is automatically established, although the user retains the ability to adjust the automatically established tension value if he wishes. When the user swings the presser-foot lever of the machine up, to raise the cloth presser foot up from the cloth, e.g., for basting work, the thread tension is automatically lowered to a predetermined value suitable for basting, although still adjustable by the user if he thinks necessary. Where a stitch-pattern is implemented using an addressable ROM, tension command data for each stitch of the stitch-pattern may be stored in the ROM, for variation of thread tension from constituent stitch of the pattern to the next. Alternatively, the ROM stores no tension control data per se, and instead a calculating circuit calculates, from the mere stitch-control data presented by the ROM, distance-dependent values dependent upon the distances between successive needle-penetration locations of the stitch-pattern, and from those derives appropriate tension command signals.
    • 缝纫机的面线的张力自动变化,不需要意识地参与机器的使用者的各种方式。 当用户选择一组选择性针迹图案中的一个时,自动建立适当的线张力值,尽管如果用户希望,用户保留调整自动建立的张力值的能力。 当使用者向上摆动机器的压脚时,将布压脚从布上抬起,例如用于烘烤工作时,线张力自动降低到适合于烘烤的预定值,尽管仍然可以通过 如果他认为必要的话。 在使用可寻址ROM实现针迹图案的情况下,针迹图案的每个针迹的张力指令数据可以存储在ROM中,用于将线张力从图案的构成线圈变化到下一个。 或者,ROM不存在张力控制数据本身,而是由计算电路根据由ROM提供的单纯缝合控制数据计算取决于针迹图案的连续针刺位置之间的距离的距离相关值 ,并从那些获得适当的张力指令信号。