Looper thread take-up apparatus of a sewing machine

A looper thread take-up apparatus of a sewing machine, the sewing machine comprising a housing including:

• (a) a machine bed having a first side adjacent to an operator, a second side opposite to the first side, a third side connected between two ends of the first side and the second side and a fourth side one end of which is connected with the other end of the first side, a lower driving shaft being disposed in one end of the machine bed, a lower knotting hook being disposed in the machine bed near the other end thereof;
• (b) a machine column erecting on one end of the machine bed and being close to the third side thereof;
• and
• (c) a machine arm one end of which is connected with upper end of the machine column, the machine arm suspending and extending from the machine column toward upper side of the fourth side of the machine bed, the sewing machine further comprising a looper thread take-up apparatus which cooperates with the lower knotting hook to loosen the looper thread, the looper thread take-up apparatus including a thread take-up cam and thread guide plates supported on two sides of the cam, said looper thread take-up apparatus being characterized in that the looper thread take-up apparatus is mounted near the second side of the machine bed and is adjacent to the lower knotting hook, the looper thread take-up apparatus further including a rotary shaft, one end of the rotary shaft being driven by the lower driving shaft, the other end of the rotary shaft being coupled with the thread take-up cam.