Abstract: An improved magnetic pattern control system for circular knitting machines. Each system includes a bar forming a bearing surface. Selector elements of the knitting machine are adapted to be tipped or pivoted about the bar as they pass the bar to move corresponding knitting needles into a knitting or non-knitting position. The bar extends in the direction of travel of the selector elements. A plurality of electromagnets are mounted at each selection station of the circular knitting machine. Each electromagnet has a pair of polar surfaces. The midpoint between all pairs of polar surfaces coincide with respect to each other and these coinciding midpoints are therefore equidistant from the bar forming the bearing surface.

Abstract: An arrangement for producing synchronization pulses for pattern control of the knitting needles of a circular knitting machine. The arrangement includes a plurality of control units mounted on, for example, the cam housing, which units coact with the butts of the knitting needles mounted on the needle cylinder. The number of control units per knitting system is equal to (n) which corresponds to the number of different types of selector elements. A raster system, forming part of a ring which rotates with the needle cylinder, coacts with a pick-up unit mounted on the cam housing. The pick-up unit includes a plurality of pick elements which emit signals in accordance with the scanning of the raster system.

Abstract: An improvement in multi-feed circular knitting machines wherein the knitting needles are adapted to assume knitting and non-knitting conditions and whereas the jacks are suspended in the knitting needles in an articulated manner. The cam clyinder is provided with a needle lowering cam at each cam system. Each jack has at least one butt adapted to be engaged by the needle lowering cam when the corresponding jack has been swivelled on to the cam cylinder. The improvement comprises the construction and the manner of interaction of the butts and the needle lowering cam. The butts are arranged on the swivellable jacks and are selectively adapted to be pivoted away from the cam cylinder by means of a special pivoting device in each system when the corresponding needle is to misknit, that is in advance of the needle lowering cam of the system and are adapted to be swivelled back to their original position by special means immediately after having passed the needle lowering cam.