| 摘要 |
<p>A feed roller 5 which rotates about a supporting shaft 50 extending in parallel with a needle plate 3 is supported by a presser base 21 attached to a lower end of a presser bar 2. The feed roller 5 descends by fall of the presser bar 2, sandwiches cloth for sewing between itself and a driven roller 30 provided in a corresponding position of the needle plate 3, intermittently rotates, and feeds the cloth for sewing. Repeated rotation of a feed drive shaft 40 is transmitted to the feed roller 5 via a swinging arm 43, an upper link 46, a feed transmission shaft 44, a lower link 47 and a transmission bracket 48, and the feed roller 5 rotates only while the feed drive shaft 40 rotates in one direction.</p> |
