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    • 97. 发明专利
    • FREE ARM LENGTH SWITCHING DEVICE FOR SEWING MACHINE
    • JPH07328274A
    • 1995-12-19
    • JP14564794
    • 1994-06-03
    • JANOME SEWING MACHINE CO LTD
    • SANO YASUROKAWASATO TAKAYUKI
    • D05B73/06
    • PURPOSE:To enlarge the applying range of free arm sewing by extending the usable length of a free arm by moving a carriage for frame embroidery sewing to any prescribed position separated from a housing position when a long key is produced at the time of selecting normal sewing. CONSTITUTION:When a sewing machine is turned on, the program of a total controller 40 is started, both X and Y driving motors 24 and 26 are initially set, and a carriage 22 for frame embroidery sewing is moved through an X-Y driving mechanism 28 to the housing position. Next, when a normal sewing key 8 of a keyboard 4 is selected and the change mode of a free arm length is selected on the pattern selecting picture of the sewing machine on a display device 10, that picture is switched to a free arm length change picture displaying a free arm length change key composed of a long key 15 and a short key 16. Continuously, when the long key 15 is depressed, the carriage 22 is moved and set at the prescribed position separated orthogonally to the lengthwise direction of the free arm from the housing position just for the prescribed distance.