Abstract: The knitting machine includes a carrier, and a plurality of knitting-needle units, each comprised of a needle portion and a motion-transmitting portion mounted on the carrier for longitudinal reciprocation and movable between an operative position and a non-operative position. A motion-imparting arrangement, for example comprised of lifting and lowering cams, impats longitudinal motion to those of the motion-transmitting portions which are in the operative position. A selecting arrangement selects the positions of the motion-transmitting portions. The selecting arrangement includes a selecting cam arrangement which is movable between a first position in which the selecting cam arrangement engages the motion-transmitting portions and moves the latter to one of the positions thereof and a second position in which the selecting cam arrangement is not operative for so moving the motion-transmitting portions.

Abstract: A device for changing threads in circular knitting machines, the device having several thread-changing units each of which is assigned to a knitting system of the circular knitting machine. The units have several thread-changing fingers for guiding various threads which can be selectively led to a knitting zone. The thread-changing units have members which include devices for cutting and clamping threads. In accordance with the invention, the thread-changing member of each thread-changing unit is connected with an electrically operated preselector, and is mechanically operated in dependence upon this preselector.