| 摘要 |
<p>A sewing machine is described comprising a mechanism arranged to convert movement signals generated by a decoder unit into movements of a feed dog for the fabric with the main characteristic of the machine being that said mechanism comprises a plurality of levers; a selector unit which is controlled by the decoder unit and selects one of said levers, to place this latter in a working position; a member angularly coupled to a control shaft for the dog and angularly positionable in a predetermined angular position by the selected lever; and a dragging element controlled by said decoder unit and arranged to move the member from its predetermined angular position towards an angular reference position.</p> |
