Abstract: A jack and upper needle dial for circular knitting machine for fabricating double-knitting plush fabric includes an outer and inner curl sinker plate, an upper needle dial for holding the outer and inner curl sinker plate and a jack, and a sinker ring. The sinker ring may drive the outer and inner curl sinker plate to couple with a knitting needle to perform tucking and sinking loop operation for generating loop effect at both sides of the plush fabric. The outer and inner curl sinker plate may be moved smoothly in the jack without hitting the sinker ring and may prevent the sinker ring and outer and inner curl sinker plate from damaging.

Abstract: An improved structure of press ring and steel ring for adjusting steel ring wearing to enable a circular knitting machine to function normally. The transmission mechanism of the circular knitting machine includes a frame, a lower transmission gear, a steel ring set, a press ring, a needle drum seat and a spindle. The frame has an adjustment element located therein and a bulged ring at the outer side. The press ring is located above the bulged ring and with a washer interposed therebetween. The adjustment element may be unfastened to release pressing force of the press ring against the steel ring set for replacing the washer with a new and thinner washer, then the adjustment element may be fastened again to press the steel ring set to eliminate the gaps between the steel ring set and the frame, lower transmission gear and press ring whereby the spindle may drive the lower transmission gear smoothly for the circular knitting machine to operate normally.

Abstract: An improved structure for adjusting the gap between an anchor seat and a needle drum seat of a circular knitting machine, and particularly an anchor seat coupled with a cam, has a fine tune bore and a positioning bore formed in the anchor seat, and a slide trough formed at the bottom side of the anchor seat for housing a slide block. A positioning bolt is provided to fasten the slide block to the anchor seat, and a fine tune bolt is provided to fasten the anchor seat and slide block to a lower lozenge ring. Through a lightly tapping on the anchor seat and fastening and unfastening the fine tune bolt and positioning bolt, the gap between the anchor seat and needle drum seat may be adjusted precisely thereby to prevent the needles located in the needle drum seat from hitting the cam or dropping, and enable the circular knitting machine to perform knitting operation smoothly and precisely.

Abstract: A computer-controlled ground mesh jacquard knitting machine. The machine includes a set of yarn feeders supported on the machine base, a set of needles mounted on a needle cylinder, a set of first needle jacks respectively coupled to the needles, a set of second needle jacks respectively coupled to the first needle jacks, a lifting cam device controlled to lift the needles and the first needle jacks. The lifting cam device includes needle lifting guide blocks and flat guide blocks and needle descending guide blocks respectively arranged in an outertrack thereof, and the needle lifting guide blocks are arranged in an inner track thereof, and a needle selector is mounted below the lifting cam device, wherein the needle selector is controlled to selectively drive the second needle jacks when the needles and the first needle jacks are moved by the lifting device causing the needles to achieve a ground mesh jacquard knitting operation.

Abstract: A needle selection structure used in a rib knitting machine or interlocking knitting machine, which includes a computer-controlled needle selection unit arranged on a cover plate above a needle dial, and controlled by an external computer to move selection jacks, enabling plate needles to be selectively extended out to act with cylinder needles in knitting a yarn into a ribbed or interlocking fabric.

Abstract: A double-loop towel may be knitted in either a pile loop or non-pile pattern by a circular knitting machine having an inner pile jacquard mechanism which includes a selector and a selection jack for controlling the knitting operation.

Abstract: In a circular knitting machine shut-down positioning and needle/feeder position control method, two signals of 90.degree. phase difference are obtained from an encoder and then processed through a pulse generator for controlling the positioning of the forward/reverse rotation of the needle signal for controlling the positioning of the forward/reverse rotation of the needle cylinder and the value of the distance between the point of origin of the needle cylinder and the point of origin of the encoder are inputted into a needle position processing circuit for processing into a control signal, permitting the control signal thus obtained to be inputted into a main control circuit of the circular knitting machine for determining the real position of the first needle and the first feeder of the circular knitting machine.

Abstract: A needle position detecting system for a circular knitting machine inputs the needle position to a computer which controls the needles to perform jacquard knitting. The knitting machine includes a needle cylinder carrying a plurality of needles, a driven gear fixedly mounted on the needle cylinder and driven to turn it by a motor driven gear. An optical encoder coaxially connected to the drive gear counts the number of rotations of the drive gear and the needle cylinder and sends a signal to the computer for calculating a respective needle position.

Abstract: A jacquard mechanism mounted in a circular knitting machine for knitting a jacquard fabric, including a fixed selector cam for guiding a knitting needle in a fixed track, a needle selector controlled to raise the knitting needle into a tucking track for a jacquard knitting operation, a movable selector cam moved in a sliding slot in the fixed selector cam to open/close the tucking track, and a driving mechanism controlled to move the movable selector cam in the sliding slot of the fixed selector cam.

Abstract: A needle selection device including a plurality of push jacks respectively mounted in the needle slots of the needle cylinder of a circular knitting machine, a plurality of lifting bars respectively mounted in the needle slots and selectively driven by the push jacks to lift respective needles, and an electromagnetic device mounted on the cam of the circular knitting machine and moved by it to pass from one lifting bar to another, wherein each lifting bar is balanced in one needle slot on a fulcrum at its center and moved by the electromagnetic device between a first position in which the lifting bar will be driven by the respective push jack to lift the respective needle, and a second position in which the lifting bar will not be driven by the respective push jack to lift the respective needle.

Abstract: A selecting mechanism for a circular knitting machine, including a hollow base, which holds pairs of selecting jacks at different elevations, and a selecting jack pushing-up device detachably fastened to the hollow base to hold pairs of pushing-up plates, wherein each pushing-up plate has a nose turned about a respective pivot between two alternative positions for controlling the positions of the pairs of selecting jacks for a full-stitch, half-stitch, or plain-stitch operation.

Abstract: A water level detector and indicator system includes a water level detector and a water level display controlled by the water level detector to give a respective output signal when the level of water changes from one position to another. The water level detector can be a mechanical type which uses a float to control a multi-step switch causing a series of indicator lamps to give light respectively. The water level detector can be an electronic type which uses metal probes to detect the change of water level, and a controller driven by the metal probes to control buzzers and indicator lamps to work.

Abstract: A circular knitting machine striper control system for controlling the operation of the stripers of a circular knitting machine in changing yarns for patterns automatically. The control system includes a controller carried on a rotary table, having a plurality of swinging plates respectively controlled by solenoids to drive striping fingers of either fixed striper in moving respective striping feeders to change yarns for patterns. A striping finger is not triggered by the respective swinging plate during the rotary motion of the rotary table as the respective solenoid does no work, when yarn changing operation is not needed.