Abstract: Operation conditions of a knitting machine for respective courses are marked on predetermined columns of a program sheet and are thus stored, the program sheet is rotated in the normal direction or reverse direction by one pitch per course, and marks are read out at every step of the program sheet by a mark reader to operate the knitting machine under conditions indicated by the read marks. In the apparatus for saving instuctions of a program sheet according to the present invention, when the operation of a knitting machine is continuously conducted under the same conditions, the stepwise advance of the program sheet is stopped and when the operation of the knitting machine is repeated according to a certain operation cycle, the program sheet is rotated in the normal direction or reverse direction according to said operation cycle.

Abstract: The present invention relates to a photoelectric reading type control system for a flat knitting machine, in which a single program sheet having marks at predetermined positions is verified by a photoelectric mark reader and selection of needles, change of threads and other operation are performed according to information verified by the mark reader.In the present invention electromagnets disposed on a groove of the same pitch as that of a needle groove are independently actuated so that a selector is moved and a batt of a jack necessary for needle selection is shifted in the vertical direction with respect to a wing cam, thereby to enable optional selection of needles, and an automatic control system, especially a photoelectric reading type control system, is disposed so that selection of the jack and other operations are performed according to information obtained by verification of a single program sheet having marks at predetermined positions by a photoelectric mark reader.