Jacquard pattern control arrangement for circular knitting machines

Claim 2

A control mechanism for a circular knitting machine having a plurality of similar knitting systems, a rotatable needle cylinder, needle-receiving channels in said cylinder, and knitting needles in said channels, comprising two sets of different types of needle jacks in said channels, said different types of jacks being disposed in pairs, each such pair of jacks having contiguous jacks of different types, and two control selection stations for each knitting system of the knitting machine, at least of one of said stations affording the selection of both needle jack types, the needle jacks being capable of limited swinging, each needle jack being provided with a radially outwardly facing lower working foot and with at least one radially outwardly facing control foot, a cam at each knitting system with which the working feet of the needle jacks selectively coact, a Jacquard control mechanism having a driven pin drum, means cooperating with the pin drum to control the needle jacks by coaction with the control feet on the jacks, the needle jacks being provided with radially outwardly facing upper working feet, the upper working feet of the two different types of needle jacks being of different widths axially of the needle cylinder, the needle jacks of one type having an axially brOad upper working foot while the needle jacks of the other type have an axially narrow upper working foot, the upper edges of all of the upper working feet of both types of needle jacks lying at the same distance from the upper ends of the needle jacks, one of said types of needle jacks having an additional, radially inwardly facing foot, and cam means coacting with said additional, radially inwardly facing feet to rock the jacks carrying said additional feet radially outwardly.

Claim 3

A Jacquard control mechanism according to claim 1, comprising a cam-carrying mantle surrounding the needle cylinder, a cam system for each knitting system, each cam system having a first radial cam for the swinging of the needle jacks, in the operation of the apparatus the first radial cam working upon needle jacks of both types, said cam means being disposed at each cam system and consisting of a second radial cam.

Claim 4

A control mechanism for a circular knitting machine having a plurality of similar knitting systems, a rotatable needle cylinder, needle-receiving channels in said cylinder, and knitting needles in said channels, comprising two sets of different types of needle jacks in said channels, said different types of jacks being disposed in pairs, each such pair of jacks having contiguous jacks of different types, two control selection stations stations for each knitting system of the knitting machine, at least one of said stations affording the selection of both needle jack types, the needle jacks being capable of limited swinging, each needle jack being provided with a radially outwardly facing lower working foot and with at least one radially outwardly facing control foot, a cam at each knitting system with which the working feet of the needle jacks selectively coact, a Jacquard control mechanism having a driven pin drum, means cooperating with the pin drum to control the needle jacks by coaction with the control feet on the jacks, the needle jacks being provided with radially outwardly facing upper working feet, the upper working feet of the two different types of needle jacks having different widths axially of the needle cylinder, and intermediate jacks through which the needle jacks work upon the needles, there being provided two types of intermediate jacks corresponding to the different needle jacks, the two types of intermediate jacks having radially outwardly facing working feet which are distinguished from each other by a different positioning of such working feet, a cam-carrying mantle surrounding the needle cylinder, a cam system for each knitting system, each cam system having radial cams for the swinging of the needle jacks in the operation of the apparatus, one of said types of needle jacks having an additional, radially inwardly facing foot, first and second radial cams, the first radial cam working upon needle jacks of both types, and the second radial cam working upon the needle jacks bearing such additional, radially inwardly facing foot only through such additional foot on such needle jacks.

Claim 5

A control mechanism for a circular knitting machine having a plurality of similar knitting systems, a rotatable needle cylinder, needle-receiving channels in said cylinder, and knitting needles in said channels, comprising two sets of different types of needle jacks in said channels, said different types of jacks being disposed in pairs, each such pair of jacks having contiguous jacks of different types, two control selection stations stations for each knitting system of the knitting machine, at least one of said stations affording the selection of both needle jack types, the needle jacks being capable of limited swinging, each needle jack being provided with a radially outwardly facing lower working foot and with at least one radially outwardly facing control foot, a cam at each knitting system with which the working feet of the needle jacks selectively coact, a Jacquard control mechanism having a driven pin drum, means cooperating with the pin drum to control the needle jacks by coaction with the control feet on the jacks, the needle jacks being provided with radially outwardly facing upper working feet, the upper working feet of the two different types of needle jacks having different widths axially of the needle cylinder, and intermediate jacks through which the needle jacks work upon the needles, there being provided two types of intermediate jacks corresponding to the different needle jacks, the two types of intermediate jacks having radially outwardly facing working feet which are distinguished from each other by a different positioning of such working feet, a cam-carrying mantle surrounding the needle cylinder, a cam system for each knitting system, each cam system having radial cams for the swinging of the needle jacks in the operation of the apparatus, one of said types of needle jacks having an additional, radially inwardly facing foot, first and second radial cams, the first radial cam working upon needle jacks of both types, and the second radial cam working upon the needle jacks bearing such additional, radially inwardly facing foot only through such additional foot on such needle jacks.