Janome Sewing Machine Company Limited

Janome Sewing Machine Industry Co., Ltd.

Hidenori Sasako

Takeshi Kongo

Michio Hisatake

Yoshikazu Ebata

An automatic embroidering machine comprising a control apparatus which compares a limit line of movement of an embroidering frame to be used prior to starting embrodeiry with a range of a row of selected and stored embroidering letter, nullifies improper operation keys, and indicates by figures appropriate operations of the operation keys.

Automatic embroidering machine and method

An embroidery frame attached to an embroidering machine is shifted on a horizontal plane by means of a pair of pulse motors for changing relative position between a vertically reciprocating needle and a fabric supported within the embroidery frame. A phase sensor is arranged for continuously detecting a rotational phase of an upper drive shaft which governs a vertical position of the needle. The pulse motors are controlled such that a horizontal shift of the embroidery frame is prevented or discontinued in a particular circumstance for preventing breakage of the needle and/or damage of the fabric which would otherwise occur during the frame shift operation.

Control system for frame shift in embroidering machine

An automatic embroidering machine comprising a stitch forming unit including a vertically reciprocating needle, an embroidering frame for supporting a fabric to be stitched, a drive for effecting X-Y movement of the embroidering frame in accordance with vertical reciprocal movement of the needle, a first control unit for coordinating codes for embroidering patterns of the same color in sequence by comparing color changing codes included in embroidering data, and a second control unit for moving the embroidering frame to a coordinate with a color changing code of a different color to form patterns of different colors.

Automatic embroidering machine

An embroidering machine is provided with a display section which is retractable within a machine housing and can be pulled to an operational position when in use for select/input operation. Several kinds of select/input operation can be made with a single display means, by suitably changing and selecting the display mode. Select/input operation is made by plotting an appropriate portion seen in the display, reducing to a great extent erroneous operation with a visual support.

Embroidering machines having graphic input means

An embroidering system comprises a plurality of embroidering machine each connectable to a single control unit. Various characters or patterns are stored in a floppy disc installed in the contol unit, from which pattern data designating a desired pattern combination can be read out and transferred to a memory in the control unit responsive to key entry operation. By repeated key entry operation, plural series of stitch control data including the pattern data are in a lump stored in the memory. Among them, a specific series of the stitch control data can be read out in response to a pattern renewal signal which is generated by manual depression of a corresponding key arranged on the embroidering machine each time when the preceding embroidering operation has been completed.

Embroidering system

An embroidering machine includes RAM which stores temporally the embroidering data read out from a memory card; a device which detects attaching or detaching of the memory card; a buffer circuit which makes and breaks a power source and buses for the memory card; an indicator or warning device which indicates the circuit making and breaking; a device for double checking the data sent from the memory card to RAM; and a device which indicates to the operator the presence of a required card. In the detector of the memory card, determined detecting edge terminals of the memory card are made shorter, and when the card is detached the circuits of the detecting terminals are disconnected earlier than the remaining circuits. When the circuit of the detecting terminal is disconnected, the port of the circuit is rendered to be high impedance by the buffer circuit and the power source to the memory card is disconnected before the terminal of the power source and the bus of the memory card are disconnected, so that if the memory card is slipped out from the embroidering machine while processing 'ACCESS' of the memory card, the memory IC is not destroyed.

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Tokyo, Japan

Hidenori Sasako