| 摘要 |
A modified sub-needle with associated actuation elements for circular stocking machines, which is constituted by a lower sub-needle provided with a selection heel and by an intermediate sub-needle provided with an upper heel and a lower heel; the top of the lower sub-needle has a lower external region and an upper internal region for the resting of the base of the intermediate sub-needle; there is provided a first bolt cam for lifting the lower heel of the intermediate sub-needle which is adapted to selectively move the oscillating base of the intermediate sub-needle so that it rests in the lower external region or in the upper internal region of the lower sub-needle; and there is provided a second bolt cam for lowering the upper heel of the intermediate sub-needle; the selections and longitudinal movements performed by the intermediate sub-needle being suitable to reduce the longitudinal strokes required of the sub-needles and the angular extent of the bolt cams and of the selection cams.
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