Cylindrical sewing machine, especially for curved leather goods, has drive to transport horn positioned to reduce distance from needle to support

摘要

A cylindrical sewing machine has a lower material support column (7) with a needle opening (8) and toothed ring (9). A reciprocating horn is driven through the hollow column (7) by an oscillating shaft, which carries a radially projecting fork that engages a follower connected to the horn. The angular position of the drive fork is modified so that the distance between the needle opening (8) and the cover (10) is reduced.