Machine for operating on workpieces.

摘要

An automatic sewing machine, e.g. for shoe uppers, comprises workpiece supporting means operating instrumentalities (40,42) mounted at opposite sides of the supporting means to operate on a workpiece supported on the supporting means and drive means (124,160) for the supporting means arranged to move the supporting means and a workpiece supported by the supporting means (30) substantially in a plane relative to the operating instrumentalities (40,42). First motor means (19) rotate the instrumentalities (40,42) about axes (A,B) which are coaxial and extend generally transversely to the plane (30) to adjust the position of the instrumentalities (40,42) about the axes (A,B), assuming desired orientations relative to the direction of movement of work moved by the workpiece supporting means. Second motor means (6), mounted on the first carriage (16), and third motor means (28) mounted on the second carriage (27), are controlled by control means to operate in a synchronous relationship with one another. <IMAGE>