| 摘要 |
986,261. Sewing machines. MEFINA S. A. March 9,1964 [June 26,1963], No. 9794/64. Heading D1G. In a rotary hook sewing machine, a device adapted to effect the removal of the bobbin from the rotary hook is mounted on the machine head. As shown, a spindle 8 which journals a swinging gate 5 carrying the reciprocating needle bar 4, is hollow and receives in its lower end an extension of a finger 21. The latter may be drawn downwards manually, against the bias of a spring contained in spindle 8, to engage its split lower end 29 with the bore 18 or a bobbin 16 mounted in a vertical axis rotary hook 12. The bobbin rises with finger 21 when the latter is released. It is stated that the return spring would be omitted, that the control of the finger could be effected by means of a lever or any type of mechanical means, and that the finger could be replaced by a hook, a magnet, a suction disc or any device for extracting the bobbin. |
