Sewing machine having needle bar oscillating mechanism, needle bar interrupting mechanism and thread tension releasing mechanism

A sewing machine, comprising:

• a needle bar having a lower end to which a needle with an eye is attached;
• a needle bar up/down moving mechanism that moves a needle bar up and down;
• a needle bar horizontally moving mechanism that moves the needle bar in a predetermined horizontal direction;
• a needle bar interrupting mechanism that interrupts the needle bar up/down moving mechanism from moving the needle bar up and down;
• a needle thread supply source that supplies a needle thread;
• a thread tension adjusting mechanism that adjusts a tension of the needle thread in a path extending from the needle thread supplying source to the eye of the needle;
• a tension releasing mechanism that allows the thread tension mechanism to release the tension of the needle thread;
• an actuator that gives a driving force;
• and
• a driving mechanism that transmits the driving force of the actuator to the needle bar horizontally moving mechanism, the needle bar interrupting mechanism, and the tension releasing mechanism.

A sewing machine, comprising:

• a needle bar having a lower end to which a needle with an eye is attached;
• a needle bar up/down moving means for moving a needle bar up and down;
• a needle bar oscillating means for oscillating the needle bar in a lateral direction perpendicular to a feeding direction of a work cloth;
• a needle bar interrupting means for interrupting the needle bar up/down moving means from moving the needle bar up and down;
• a needle thread supply source that supplies a needle thread;
• a thread tension adjusting means for adjusting a tension of the needle thread in a path extending from the needle thread supplying source to the eye of the needle;
• a tension releasing means for allowing the thread tension adjusting means to release the tension of the needle thread;
• actuating means for giving a driving force;
• and
• driving means for transmitting the driving force of the actuating means to the needle bar oscillating means, the needle bar interrupting means, and the tension releasing means.