CA1045400A - Roll feed for circular knitting machine - Google Patents
Roll feed for circular knitting machineInfo
- Publication number
- CA1045400A CA1045400A CA273,628A CA273628A CA1045400A CA 1045400 A CA1045400 A CA 1045400A CA 273628 A CA273628 A CA 273628A CA 1045400 A CA1045400 A CA 1045400A
- Authority
- CA
- Canada
- Prior art keywords
- roller
- yarn
- lower roller
- rollers
- strands
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Knitting Machines (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An attachment for a knitting machine in the form of a roll feed device to maintain an even yarn tension to the needles to provide a smooth fabric since the needles will always recelve a conatant tension yarn from the roll feed. The roll feet includes a bottom rubber covered roller and a top steel roller through which the yarn passes with upper and lower guide eyelets being provided for the yarn and the lower rubber covered roller being driven at a positive, adjustable speed directly from the ring gear on the bottom of the circular knitting machine cylinder. By maintaining constant tension on the yarn to the needles, a more uniform fabric is produced.
An attachment for a knitting machine in the form of a roll feed device to maintain an even yarn tension to the needles to provide a smooth fabric since the needles will always recelve a conatant tension yarn from the roll feed. The roll feet includes a bottom rubber covered roller and a top steel roller through which the yarn passes with upper and lower guide eyelets being provided for the yarn and the lower rubber covered roller being driven at a positive, adjustable speed directly from the ring gear on the bottom of the circular knitting machine cylinder. By maintaining constant tension on the yarn to the needles, a more uniform fabric is produced.
Description
The present invention generally relates to circular knitting machine~
and more psrticularly a roll feed for such machines in which yarn being fed from supply cones to the needles i8 maintsined under constant tension between the roll feed and needles.
The feeting of strands of yarn to the knitting mechanism in a knit-ting machine, such as a circular knittin8 machine, has presented substantial problems in view of the non-uniformity of the yarn on the supply cones. For example, if the yarn is too tightly wound on the cone, it sometimes i8 difficult to unwind and, in effect, sticks to the cone thus resulting in excessive tension in the strands between such sticking cones and the needle receiving the strand of yarn therefrom. In other instances, the yarn on the cone may be underwound 80 that too little tension exists in the strand between the cone and neetle.
Non-uniform tension in the yarn strands results in a non-uniform fabric. This problem has been recognized in the knitting industry and efforts have been made to solve the problem. One example of such efforts is disclosed in prior U.S.
Pat. No. 3,243,974, issued April 5, 1966, in which a pair of side-by-side rollers receive the yarn strands therebetween with one of the rollers being spring biased toward the other in an effort to exert tension on the yarn strands which pass be-tween the rollers to the needles. Other prior patents relating to this inven-tion are:
424,295 March 25, 1890 1,947,958 February 20, 1934
and more psrticularly a roll feed for such machines in which yarn being fed from supply cones to the needles i8 maintsined under constant tension between the roll feed and needles.
The feeting of strands of yarn to the knitting mechanism in a knit-ting machine, such as a circular knittin8 machine, has presented substantial problems in view of the non-uniformity of the yarn on the supply cones. For example, if the yarn is too tightly wound on the cone, it sometimes i8 difficult to unwind and, in effect, sticks to the cone thus resulting in excessive tension in the strands between such sticking cones and the needle receiving the strand of yarn therefrom. In other instances, the yarn on the cone may be underwound 80 that too little tension exists in the strand between the cone and neetle.
Non-uniform tension in the yarn strands results in a non-uniform fabric. This problem has been recognized in the knitting industry and efforts have been made to solve the problem. One example of such efforts is disclosed in prior U.S.
Pat. No. 3,243,974, issued April 5, 1966, in which a pair of side-by-side rollers receive the yarn strands therebetween with one of the rollers being spring biased toward the other in an effort to exert tension on the yarn strands which pass be-tween the rollers to the needles. Other prior patents relating to this inven-tion are:
424,295 March 25, 1890 1,947,958 February 20, 1934
2,111,984 March 22, 1938
3,080,837 March 12, 1963 3,693,378 September 26, 1972 While such previous devices have operated with some degree of ~uccess, uneven yarn tension remains a problem in circular knltting machine~ even when conven-tional tape feed srrangements are employed or arrangements such as disclosed in the prior patents are employed.
An ob~ect of the present invention is to provide a roll feed for circular knitting machines which will maintain a substantially constant and equal tension on all strands of yarn bein8 "consumed" by the knitting needles with the roll feed incorporating a pair of rollers oriented in horizontal position with a ~045400 bottom roller being covered wlth rub~)er and an upper roller being constructed of steel, the lower roller being driven at a positive, adjustable speed by a direct driving connection with the ring gear on the bottom of the cylinder o the knitting machine.
Broadly speaking, the above object is met by the present lnvention which provides a roll feed for a circular knitting machine of the type having a needle cylinder receiving a plurality of yarn strands from supply cones, the roll feed comprising a pair of parallel rollers rotatably supported about horizontal axes with one roller being disposed above the other and in periperal contact with the lower roller, yarn strand guide means disposed above the upper roller for guiding strands of yarn downwardly into the nip between the rollers, yarn strand guide means aisposed below the lower roller and guiding strands of yarn from the roll feed to knitting needles on the machine, and drive means connected to the lower roller for driving the lower roller at a positive speed to maintain constant yarn tension between the roll feed and needles, the lower roller being pro-vided with a friction producing surface on the periphery thereof, the upper roller being floatingly mounted whereby the weight of the upper roller will exert nip pressure against the lower roller or maintaining frictional wrap around contact between the yarn strands and the lower roller.
The present invention will be described in greater detail with reference to the drawings wherein:
Figure 1 is a diagrammatic perspective view of a circular knitting machine with the roll feed of the present lnvention incorporated thereon.
Figure 2 is a plan view of the roll feed attachment of the present invention illustrating the slightly eccentric relationship of the roll feed to the cylinder.
Figure 3 is a side elevational view of the construction of Figure 2.
Figure 4 is a transverse, sectionAl view of the roll feed illustrat-ing the orientation of the rollers and eyelets for guidlng the yarn strands in relation to the rollers.
Figure 5 is a fragmental elevational view of the ends of the rollers.
Figure 6 is 8 fragmental view of the manner in which the supporting members are attached to the knitting machine.
Figure 1 illustrates diagrammatically a conventional, circular knit-ting machine 10 provided with the roll feed 12 of the present invention incor-porated thereon. The knitting machine 10 includes yarn supply cones 14 mounted on the usual pins on a supporting structure supported by a vertical post 16.
The knitting machine includes various guides and the like for the yarn strands which are removed from the individual cones 14 and are guided downwardly into the needle cylinder 18 which is rotated by a conventional motor drive unit and appropriate gearing including a ring gear (not shown). The circular knitting machine is conventional and the elements of the knitting machine previously recited are recognized by those skilled in the art and are commonly found in conventional circular knitting machines of the rotating needle cylinter type such as in U.S. patent Nos. 3,243,974 and 3,303,671.
The roll feed 12 of the present invention includes a pair of verti-cally superimposed rollers including a top cylindrical roller 20 constructed of steel and a larger dia~eter cylindrical lower roller 22 having a rubber covering 23 thereon. The axes of the rollers 20 and 22 are aligned with each other and the rubber covered roller 22 is substantially larger in diameter than the steei roller 20 as illustrated in Figure 4. For supporting the roll feed 12, a pair of vertical posts 24 are provided which are oriented approximately 3 inches laterally of the center of the machine as illustrated in Figure 2 so that the rollers will pass by the center post 16 which holds the conventional cloth spreader and air device. Each post 24 includes a reduced lower and upper end 26 with the lower end being received in a socket or recess 28 formed in the needle cylinder base 30 with the upper end of each post 24 being received in a recess or hole 32 in the creel ring 34, thus fixedly securing the vertical post~ between the machine base and creel ring casting with the weight of the creel ring being 1~45400 sufficient to hold the posts in positive position.
The bottom roller 22 is rotatably supportet by pillow bearing blocks 36 8upported by bracket structures 38 adjustably secured to the vertical post 24 by a clamp bracket 40. The steel roller 20 is supported by a flange bearing 42 on each end thereof by a bracket structure 44 secured to the post 24 with the flange bearing structure 42 enabling free floating movement of the roller 20 toward the roller 22 so that the weight of the roller 20 will exert the nip pressure on the yarn strands 46 which pass under the top roller 20 and over and around the outside of the bottom roller 22 as illustrated in Figure 4.
The lower roller 22 includes a shaft 48 received in the pillow block bearings 36 with one end of the shaft 48 being driven by a V-belt 50 and a V-belt pulley 52 mounted on the end of the shaft 48. The V-belt 50 is in driv-ing engagement with a drive pulley 54 driven from the ring gear on ehe knitting machine to provide a positive drive for the roller 22. The upper pulley 52 is a variable speed pulley and a variable speed ad~ustment mechanism is associated with the drive belt 50 in order to vary the speed of the rubber covered roller 22 in relation to the main gear. The vary speed pulley mechanism is conven-tional and enables ad~ustment in the rotational speed of the pulley 52 in relation to the drive pulley 54. A suitable hsusing 56 i8 provided for the variable speed mechanism and the housing may be provided with a manual control knob for ad~usting the speed of the lower roller 22 in a well known manner.
~ ounted above the top roller 20 is an upper eyelet strip 58 having a plurality of equally spaced eyelets 60 thereon with the eyelet strip 58 being secured to the center post 16 by a cLunp device 62. Mounted below the lower roller 22 is a lower eyelet strip 64 having a plurality of eyelets 66 equally spsced along the length thereof and being ad~ustably secured in place on the center post 16 by a clamp device 68. The eyelet strips are parallel to the rollers and the number of eyelets is determined by the number of feeds on the machine with each eyelet receiving a single yarn being fed into the machine with the eyelets being spaced apart approximately 3/8 to 1/2 inch in order to sepa-rate the yarns being fed between the rollers 20 and 22. The clamp mechanisms enable the eyelet strips to be vertically ad~usted by loosening the set~crew and raising or lowering the encircling ring on the center post 16. As illus-trated, the upper eyelet strip is offset 2-1/2 to 3 inches to the nip point of the rubber roller and steel roller which, combined with the position of the lower eyelet strip provides approximately a 50% friction wrap around of the yarn on the rubber roller 22. The yarn from the lower eyelet strip is fet to the stop motions or directly to yarn guides on the cylinder 18 whichever is preferable.
The roll feed of the present invention can be applied to almost any circular knitting m~chine and due to the simplicity of the device and the knit-ting problems which it helps to eliminate, less experienced knitting machine operators can knit top quality fabric since each yarn i8 evenly fed through the rollers to the needles with the same tension resulting in s oth, uniform knit-ted fabric. The stitch can be changed quickly with a simple knob adjustment snd the roll feed will maintain the stitch without variance until the operator changes it. Pulls on the yarn resulting from yarn sticking to the cone or being underwound will not affect the appearance of the fabric because the tension remain~ the same between the rollers and needles when the roll feed of the present invention is used. Since the roll feed of the present invention util-izes a minimum number of parts ant is of heavy duty construction, less service and less down time will occur. Further, no tapes such as employed in a conven-tional tape feed need to be replaced or repaired and no wax buildup will occur.In addition, there is no chance of running light ends in the fabric due to the tape being down or running in and out and the roll feet provides a greater range of stitche~ being obtained before changing the cylinder height. These and other factors contribute to a better quality fabric and materially simplifies opera-tion of the knitting machine and enables the operator of the knitting machine to more easily observe the yarn and rethreading time caused by yarn breakage will be greatly reduced.
An ob~ect of the present invention is to provide a roll feed for circular knitting machines which will maintain a substantially constant and equal tension on all strands of yarn bein8 "consumed" by the knitting needles with the roll feed incorporating a pair of rollers oriented in horizontal position with a ~045400 bottom roller being covered wlth rub~)er and an upper roller being constructed of steel, the lower roller being driven at a positive, adjustable speed by a direct driving connection with the ring gear on the bottom of the cylinder o the knitting machine.
Broadly speaking, the above object is met by the present lnvention which provides a roll feed for a circular knitting machine of the type having a needle cylinder receiving a plurality of yarn strands from supply cones, the roll feed comprising a pair of parallel rollers rotatably supported about horizontal axes with one roller being disposed above the other and in periperal contact with the lower roller, yarn strand guide means disposed above the upper roller for guiding strands of yarn downwardly into the nip between the rollers, yarn strand guide means aisposed below the lower roller and guiding strands of yarn from the roll feed to knitting needles on the machine, and drive means connected to the lower roller for driving the lower roller at a positive speed to maintain constant yarn tension between the roll feed and needles, the lower roller being pro-vided with a friction producing surface on the periphery thereof, the upper roller being floatingly mounted whereby the weight of the upper roller will exert nip pressure against the lower roller or maintaining frictional wrap around contact between the yarn strands and the lower roller.
The present invention will be described in greater detail with reference to the drawings wherein:
Figure 1 is a diagrammatic perspective view of a circular knitting machine with the roll feed of the present lnvention incorporated thereon.
Figure 2 is a plan view of the roll feed attachment of the present invention illustrating the slightly eccentric relationship of the roll feed to the cylinder.
Figure 3 is a side elevational view of the construction of Figure 2.
Figure 4 is a transverse, sectionAl view of the roll feed illustrat-ing the orientation of the rollers and eyelets for guidlng the yarn strands in relation to the rollers.
Figure 5 is a fragmental elevational view of the ends of the rollers.
Figure 6 is 8 fragmental view of the manner in which the supporting members are attached to the knitting machine.
Figure 1 illustrates diagrammatically a conventional, circular knit-ting machine 10 provided with the roll feed 12 of the present invention incor-porated thereon. The knitting machine 10 includes yarn supply cones 14 mounted on the usual pins on a supporting structure supported by a vertical post 16.
The knitting machine includes various guides and the like for the yarn strands which are removed from the individual cones 14 and are guided downwardly into the needle cylinder 18 which is rotated by a conventional motor drive unit and appropriate gearing including a ring gear (not shown). The circular knitting machine is conventional and the elements of the knitting machine previously recited are recognized by those skilled in the art and are commonly found in conventional circular knitting machines of the rotating needle cylinter type such as in U.S. patent Nos. 3,243,974 and 3,303,671.
The roll feed 12 of the present invention includes a pair of verti-cally superimposed rollers including a top cylindrical roller 20 constructed of steel and a larger dia~eter cylindrical lower roller 22 having a rubber covering 23 thereon. The axes of the rollers 20 and 22 are aligned with each other and the rubber covered roller 22 is substantially larger in diameter than the steei roller 20 as illustrated in Figure 4. For supporting the roll feed 12, a pair of vertical posts 24 are provided which are oriented approximately 3 inches laterally of the center of the machine as illustrated in Figure 2 so that the rollers will pass by the center post 16 which holds the conventional cloth spreader and air device. Each post 24 includes a reduced lower and upper end 26 with the lower end being received in a socket or recess 28 formed in the needle cylinder base 30 with the upper end of each post 24 being received in a recess or hole 32 in the creel ring 34, thus fixedly securing the vertical post~ between the machine base and creel ring casting with the weight of the creel ring being 1~45400 sufficient to hold the posts in positive position.
The bottom roller 22 is rotatably supportet by pillow bearing blocks 36 8upported by bracket structures 38 adjustably secured to the vertical post 24 by a clamp bracket 40. The steel roller 20 is supported by a flange bearing 42 on each end thereof by a bracket structure 44 secured to the post 24 with the flange bearing structure 42 enabling free floating movement of the roller 20 toward the roller 22 so that the weight of the roller 20 will exert the nip pressure on the yarn strands 46 which pass under the top roller 20 and over and around the outside of the bottom roller 22 as illustrated in Figure 4.
The lower roller 22 includes a shaft 48 received in the pillow block bearings 36 with one end of the shaft 48 being driven by a V-belt 50 and a V-belt pulley 52 mounted on the end of the shaft 48. The V-belt 50 is in driv-ing engagement with a drive pulley 54 driven from the ring gear on ehe knitting machine to provide a positive drive for the roller 22. The upper pulley 52 is a variable speed pulley and a variable speed ad~ustment mechanism is associated with the drive belt 50 in order to vary the speed of the rubber covered roller 22 in relation to the main gear. The vary speed pulley mechanism is conven-tional and enables ad~ustment in the rotational speed of the pulley 52 in relation to the drive pulley 54. A suitable hsusing 56 i8 provided for the variable speed mechanism and the housing may be provided with a manual control knob for ad~usting the speed of the lower roller 22 in a well known manner.
~ ounted above the top roller 20 is an upper eyelet strip 58 having a plurality of equally spaced eyelets 60 thereon with the eyelet strip 58 being secured to the center post 16 by a cLunp device 62. Mounted below the lower roller 22 is a lower eyelet strip 64 having a plurality of eyelets 66 equally spsced along the length thereof and being ad~ustably secured in place on the center post 16 by a clamp device 68. The eyelet strips are parallel to the rollers and the number of eyelets is determined by the number of feeds on the machine with each eyelet receiving a single yarn being fed into the machine with the eyelets being spaced apart approximately 3/8 to 1/2 inch in order to sepa-rate the yarns being fed between the rollers 20 and 22. The clamp mechanisms enable the eyelet strips to be vertically ad~usted by loosening the set~crew and raising or lowering the encircling ring on the center post 16. As illus-trated, the upper eyelet strip is offset 2-1/2 to 3 inches to the nip point of the rubber roller and steel roller which, combined with the position of the lower eyelet strip provides approximately a 50% friction wrap around of the yarn on the rubber roller 22. The yarn from the lower eyelet strip is fet to the stop motions or directly to yarn guides on the cylinder 18 whichever is preferable.
The roll feed of the present invention can be applied to almost any circular knitting m~chine and due to the simplicity of the device and the knit-ting problems which it helps to eliminate, less experienced knitting machine operators can knit top quality fabric since each yarn i8 evenly fed through the rollers to the needles with the same tension resulting in s oth, uniform knit-ted fabric. The stitch can be changed quickly with a simple knob adjustment snd the roll feed will maintain the stitch without variance until the operator changes it. Pulls on the yarn resulting from yarn sticking to the cone or being underwound will not affect the appearance of the fabric because the tension remain~ the same between the rollers and needles when the roll feed of the present invention is used. Since the roll feed of the present invention util-izes a minimum number of parts ant is of heavy duty construction, less service and less down time will occur. Further, no tapes such as employed in a conven-tional tape feed need to be replaced or repaired and no wax buildup will occur.In addition, there is no chance of running light ends in the fabric due to the tape being down or running in and out and the roll feet provides a greater range of stitche~ being obtained before changing the cylinder height. These and other factors contribute to a better quality fabric and materially simplifies opera-tion of the knitting machine and enables the operator of the knitting machine to more easily observe the yarn and rethreading time caused by yarn breakage will be greatly reduced.
Claims (10)
1. A roll feed for a circular knitting machine of the type having a needle cylinder receiving a plurality of yarn strands from supply cones, said roll feed comprising a pair of parallel rollers rotatably supported about hori-zontal axes with one roller being disposed above the other and in peripheral contact with the lower roller, yarn strand guide means disposed above the upper roller for guiding strands of yarn downwardly into the nip between the rollers, yarn strand guide means disposed below the lower roller and guiding strands of yarn from the roll feet to knitting needles on the machine, and drive means connected to the lower roller for driving the lower roller at a positive speed to maintain constant yarn tension between the roll feed and needles, said lower roller being provided with a friction producing surface on the periphery there-of, said upper roller being floatingly mounted whereby the weight of the upper roller will exert nip pressure against the lower roller for maintaining fric-tional wrap around contact between the yarn strands and the lower roller, said friction surface on the lower roller being a rubber external surface to increase frictional contact between the lower roller and the yarn strands, said upper roller being a steel roller having a diameter substantially less than the diam-eter of the rubber covered lower roller, said drive means for the lower roller including means for varying the speed of the lower roller to vary the tension on the yarn strands, said upper yarn strand guide means including a plurality of equally spaced eyelets disposed above the upper roller and spaced laterally thereof for guiding the individual yarn strands downwardly into the laterally facing nip between the upper and lower rollers, and means vertically adjustably supporting said eyelets for varying the position thereof.
2. The structure as defined in claim 1 wherein the lower yarn strand guide means includes a plurality of eyelets receiving individual yarn strands from the lower roller, said lower eyelets being positioned generally in vertical alignment with the rotational axes of the upper and lower rollers whereby the yarn strands engage approximately one-half of the peripheral surface of the rubber covered lower, larger roller.
3. The structure as defined in claim 2 wherein said rollers are supported in bearing assemblies, vertical posts at diametrically opposed points on the circular knitting machine for supporting said rollers, the upper roller having bracket structures mounted on the vertical posts to enable vertical movement thereof whereby the weight of the steel roller forms the sole means biasing the steel roller against the rubber covered roller.
4. The structure as defined in claim 3 wherein the vertical posts are provided with reduced ends adapted to be received in recesses in the creel ring needle cylinder base of the circular knitting machine for mounting the roll feed between the creel ring ant needle cylinder base of the circular knitting machine.
5. The structure as defined in claim 4 wherein said upper and lower eyelet are mounted on strips adapted to be adjustably supported on a central vertical post providing a support for the creel ring on the circular knitting machine.
6. The structure as defined in claim 5 wherein said rollers are eccentrically arranged in relation to the center post on the circular knitting machine and the bracket structures connecting the ends of the rollers to the vertical posts being laterally disposed for enabling the rollers to be positioned alongside of the central vertical post in the circular knitting machine.
7. A roll feed device for maintaining predetermined tension on flexible elements being fed to a machine comprising a pair of horizontal rollers oriented in vertically superimposed relation with the lower roller being driven and the upper roller being floatingly supported whereby the weight of the upper roller will cause the upper roller to maintain contact with the lower roller, said lower roller including a friction surface thereon to frictionally engage flexible elements passing between the rollers, upper and lower guide means associated with the rollers to guide the flexible elements into the nip point between the rollers and to retain the flexible elements in substantial wrap around, friction contact with the lower roller whereby the friction surface on the lower roller will exert a predetermined drag on the flexible elements passing around a substantial portion of the periphery of the lower roller, said friction surface on the lower roller being in the form of a coating of resilient material thereon, said upper roller having a substantially smooth peripheral surface and being constructed with sufficient weight to retain frictional contact between the flexible elements ant the lower roller, said roll feed device adapted to be used on a circular knitting machine of the type having a creel ring with yarn supply cones located above a needle cylinder with the flexible elements being in the form of yarn strands passing from the plurality of supply cones on the creel ring to the needle cylinder on the circular knitting machine.
8. A roll feed for a circular knitting machine of the type having a needle cylinder receiving a plurality of yarn strands from supply cones, said roll feed comprising a pair of parallel rollers rotatably supported about horizontal axes with one roller being disposed above the other and in peripheral contact with the lower roller, yarn strand guide means disposed above the upper roller for guiding strands of yarn downwardly into the nip between the rollers, yarn strand guide means disposed below the lower roller and guiding strands of yarn from the roll feed to knitting needles on the machine, and drive means connected to the lower roller for driving the lower roller at a positive speed to maintain constant yarn tension between the roll feed and needles, said lower roller being provided with a high friction surface on the periphery thereof, said upper roller being floatingly mounted whereby the weight of the upper roller will exert nip pressure against the lower roller for maintaining fric-tional wrap around contact between the yarn strands and the lower roller, said friction surface on the lower roller being a resilient external surface to increase frictional contact between the lower roller and the yarn strands, said upper roller being a heavy roller having a smooth external surface lower roller, said upper yarn strand guide means including a plurality of equally spaced eyelets disposed above the upper roller and spaced laterally of the rotational axis thereof for guiding the individual yarn strands downwardly into tangential engagement with the upper roller and into the laterally facing nip between the upper and lower rollers, said lower yarn strand guide means including a plurality of equally spaced eyelets disposed below the lower roller for receiving individual yarn strands from the lower roller, said lower eyelets being positioned generally in vertical alignment with the rota-tional axes of the upper and lower rollers whereby the yarn strands engage approximately one-half of the resilient peripheral surface of the lower roller.
9. The structure as defined in claim 8 wherein said upper and lower eyelets are mounted on strips adapted to be adjustably supported on a central vertical post providing a support for the creel ring on the circular knitting machine.
10. A roll feed for a circular knitting machine of the type having a needle cylinder receiving a plurality of yarn strands from supply cones, said roll feed comprising a pair of parallel rollers rotatably supported about hori-zontal axes with one roller being disposed above the other and in peripheral contact with the lower roller, yarn strand guide means disposed above the upper roller for guiding strands of yarn downwardly into the nip between the rollers, yarn strand guide means disposed below the lower roller and guiding strands of yarn from the roll feed to knitting needles on the machine, and drive means con-nected to the lower roller for driving the lower roller at a positive speed to maintain constant yarn tension between the roll feed and needles, said lower roller being provided with a friction producing surface on the periphery thereof, said upper roller being floatingly mounted whereby the weight of the upper roller will exert nip pressure against the lower roller for maintaining frictional wrap around contact between the yarn strands and the lower roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA273,628A CA1045400A (en) | 1977-03-10 | 1977-03-10 | Roll feed for circular knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA273,628A CA1045400A (en) | 1977-03-10 | 1977-03-10 | Roll feed for circular knitting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045400A true CA1045400A (en) | 1979-01-02 |
Family
ID=4108117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA273,628A Expired CA1045400A (en) | 1977-03-10 | 1977-03-10 | Roll feed for circular knitting machine |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1045400A (en) |
-
1977
- 1977-03-10 CA CA273,628A patent/CA1045400A/en not_active Expired
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