US3026696A - Device for delivering yarn for knitting purposes - Google Patents

Device for delivering yarn for knitting purposes Download PDF

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Publication number
US3026696A
US3026696A US663972A US66397257A US3026696A US 3026696 A US3026696 A US 3026696A US 663972 A US663972 A US 663972A US 66397257 A US66397257 A US 66397257A US 3026696 A US3026696 A US 3026696A
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Prior art keywords
yarn
riders
spool
engaging members
plates
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Expired - Lifetime
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US663972A
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English (en)
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Markert Willi
Steudten Werner
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles

Definitions

  • This invention relates to a method and device for delivering yarn for knitting purposes, and refers more particularly to a method and means for the relieving of yarn tension as it is being fed to knitting implements of cotton type machines and similar machines.
  • An object of this invention is the provision of a method and device for delivering yarn for knitting purposes, wherein the drawbacks of prior art constructions are effectively eliminated.
  • the yarn engaging members which pull the yarn from the yarn spool are located in such large numbers next to each other that they can be operated in groups in such manner that one or several of the groups remaining in the operative position, due to the resistance exerted upon the yarn which at the time extends in a zig-zag fashion, form a lock, preventing any undesired removal of the yarn.
  • the necessity of using the yarn brake is eliminated.
  • the yarn engaging members are preferably operated in groups in such manner that while the yarn is pulled off by the knitting elements, one or more groups have returned to their initial positions of rest after the yarn waves have been formed and deposited upon the support, while adjacent groups are located in their effective end positions and the remaining groups are still located in their initial positions of rest and are actuated only after the removal of the yarn delivered by the first mentioned groups.
  • a second surface is placed at a short distance from the yarn supporting surface.
  • the two surfaces form a slit in which the yarn is deposited.
  • the surfaces can be made of any desirable material, such as sheet metal, plastic or glass, and they can be formed of individual component parts; for example, they may consist of wires, threads or rods which are placed one next to the other, which may be round or profiled, and which are located close to each other.
  • the two surfaces are hinged so as to facilitate the threading of the yarn prior to the operation of the machine and make it possible to place the yarn without difficulty.
  • the upper surface may be provided with a threading slot.
  • the surfaces receive the yarn engaging members in slots which are formed in these surfaces, so that the members can be reciprocated in these slots. If the surfaces are formed by a plurality of adjacent wires, threads, rods, or the like, then the slots for the yarn engaging members are formed by providing sufficient spaces for the members between the adjacent wires, threads, rods and the like.
  • the yarn engaging members consist of riders which are mounted upon reciprocating elements, such as rods and wires or cables. The riders are so placed that in the course of their movements in one direction they engage the yarn and pull it with them, thereby removing it from the yarn spool. During the return movement of the riders the yarn is relieved of tension and lies quietly upon the supporting surface. Thus the yarn has no oscillations of its own and cannot transmit any detrimental strains or movements to the following operation step.
  • the yarn lies substantially in the form of a straight line between the riders.
  • the riders are so set in relation to each other that one rider is located upon one side of the yarn, while the following rider is located upon the opposite side of the yarn.
  • the thread is placed wave-like, substantially in the form of a sinecurve, between the plates.
  • the riders can be replaced by other yarn withdrawing elements, such as wires, tensioned threads, hooks or the like.
  • this procedure can be accomplished by a properly directed stream of gas, such as compressed air, or by an electrical charge effective in conjunction with suitably arranged electrical fields.
  • the riders are driven mechanically through a combination of rigid and bendable elements such as rods and wires.
  • rigid and bendable elements such as rods and wires.
  • driving means which are completely rigid, or by using only bendable or elastic elements, such as wires or chains.
  • the drive for the operative movement of the riders can take place pneumatically, hydraulically, elcctro-mechanically, electrically or electromagnetically.
  • a mechanical drive for the riders, they can be reciprocated by an automatic actuating device.
  • the drive can also take place in such a manner that when a rider is moved in one direction, a spring or some other elastic element is tensioned and is used to move the rider back to its original position after the initial movement has been completed.
  • the movement of the rider is caused advantageously by known technical means such as cams, eccentrics, tumbler discs or the like.
  • the operation can be carried out in a particularly simple and etfective'manner by electromagnetically reciprocating the riders which are mounted upon rods, whereby the magnets are actuated in the desired operational rhythm by a current divider which is driven by the machine.
  • FIGURE 1 is a diagrammatic perspective view of the device of the present invention with yarn engaging elements and means for actuating them.
  • FIGURE 2 is a top view of the top plate used for forming a wave-like supply of yarn.
  • FIGURE 3 is a perspective bottom view on an enlarged scale and broken otf, illustrating the bottom plate of the device of the present invention.
  • FIGURE-4 is a diagrammatic plan view illustrating a portion of the eccentric driving the yarn engaging members.
  • FIGURE 5 is a side view of the device shown in FIG- URE 4.
  • FIGURE 6 is a diagram illustrating the method of providing a supply of yarn when the yarn engaging means are used in several groups.
  • FIGURE 7 is a diagrammatic perspective view illustrating the device of the present invention along the portions of a standard knitting machine.
  • FIGURE 1 illustrates a yarn P which is pulled from a yarn cone or a spool Y (FIG. 7).
  • the yarn supporting device includes two plates, namely, an upper plate P1 and a lower plate P2 which are separated by a narrow slot or space a.
  • the yarn F emerges from the other side of theplates P1 and P2 and extends to a yarn guide G and thence to the sinkers T of the knitting machine.
  • the section of the yarn extending between the plates P1 and P2 is located between pins or riders R1, R2 etc., which constitute the yarn engaging means; these riders are mounted upon rods Z Z etc., which are connected to and actuated by cables or wires L1, L2 etc.
  • the rods Z Z etc. are resiliently engaged at one of their ends, namely, in the example illustrating they are connected with draw springs.
  • the riders R1, R2 etc. slide in transverse slots S1, S2 etc., which extend through the plates P1 and P2.
  • the narrow slot a formed between the plates P1 and P2 is provided by suitable spacers or inserts which are not shown in the drawings.
  • the wires L1 and L2 of adjacent riders R1 and R2 are attached to arms H1 and H2, which are rigidly connected with each other by a sleeve-like member carrying a roller 0.
  • the roller 0 slides upon an edge of a cam or eccentric E1 which is mounted upon a driving shaft W. It is apparent that other riders are connected with similar devices in a similar manner.
  • the riders are preferably actuated at the moment when the yarn guide G has assumed its position of rest, that is, before the formation of a course of stitches.
  • the spring of one of the rods Z is under ten sion while the spring of the adjacent rod is devoid of tenson.
  • cam drum Only one cam drum is required for each machine.
  • the ratio of the number of cams in relation to the riders is 1:2, two riders being actuated by one cam surface by means of two rods.
  • a slotted double plate P1, P2 belongs to each yarn spool Y.
  • a single cam drum can be used for actuating all riders of all double'plates of one machine.
  • eccentrics can be replaced by other actuating means such as cams, tumbler discs or the like. Furthermore, if necessary a plurality of eccentrics can be used.
  • FIGURES 1 and 6 illustrate a position of rest of the riders in which the lever arm H1 connected to the rod Z is in its lowermost position.
  • the spring engaging the rod Z is under tension.
  • the lever arm H2 is in its uppermost position and the spring connected to the rod Z is devoid of tension.
  • the yarn inserted into the threading slot SF extends substantially along a straight line (not shown in FIG. 1) and is located between riders, the positions of which are alternately shifted in relation to each other.
  • a cotton type machine usually requires for the formation of stitches of one row about 140 of the entire rotation of the machine, and during this period no yarn is withdrawn from the yarn spool Y. During this time period the following operations take place in the described mechanism, whereby it has been assumed that a double plate is used for a total of 36 riders and 18 cam surfaces:
  • the riders R1 and R2 which are mounted upon the rods Z and Z are moved within their slots S1 and S2 from their illustrated inoperative initial positions. They will move through the threading slot SF and will engage and pull the yarn F, thereby withdrawing an additional length of yarn from the yarn spool Y. Depending upon the position of the cam surfaces, this procedure is repeated consecutively by the riders R3 and R4, R5 and R6, R7 and R8 etc.
  • the cam surfaces are of such length that the riders R1 and R2 remain in their operative end posi tions until the riders R7 and R8 have reached these extreme operative positions.
  • the riders R1 to R8 belonging to the cams E1 to E4 will remain in the operative end positions and thus prevent any undesired withdrawal of the thread.
  • the yarn guide G carries out its movement for which it has available 220 of the rotation of the machine.
  • the supplyof yarn lying loosely in the form of waves is now withdrawn by the stitch-forming elements T.
  • the cams E9 to E18 continue to operate and to provide loose waves of yarn which are available to the yarn guide G in a completely loose state, which is devoid of tension.
  • FIGURE 6 shows the manner in which yarn is withdrawn by a mechanism having 36 riders.
  • FIGURE 6 illustrates the continuing formation of waves in the withdrawn yarn which takes place in groups, and which corresponds to the operational rhythm of the machine.
  • the yarn is introduced to the plates at X and leaves the plates at Y to extend to the yarn guide.
  • the yarn between the riders R1 to R8 extends in loose untensioned waves, since these riders have already returned to their initial inoperative positions.
  • the riders R9 and R10 in the position shown in FIGURE 6, are in the process of moving to their initial positions and have not passed as yet the slot SF between the plates.
  • the riders R11 to R16 are located in their operative end positions and prevent the pulling of the yarn in the undesired direction.
  • the riders R17 and R18 are moving toward their operative positions.
  • the riders R19 to R36 are as yet located in their initial positions in front of the yarn which extends between them in the form of a straight line.
  • the operation of the device is not limited to the described ratio of :220.
  • the operation of the riders may be varied by suitably setting the cams E1, E2 etc. and thus adapted to different requirements and conditions.
  • the desired dead angle can be provided with other means known in the art.
  • the plates P1 and P2 between which the yarn is located are made of a transparent material, thereby facilitating the supervision of the operation of the device.
  • An important advantage of the described invention resides in the fact that the formation of the stitches, particularly in the knitting of stockings, is made uniform. A further advantage is the possibility of using higher operational speeds without endangering delicate yarn.
  • Stockings knitted by the device of the present invention when leaving the machine have the same length and are completely symmetrical, which is particularly effective for the proper formation of high heels of stockings.
  • a device for withdrawing yarn from said yarn spool and delivering said yarn to said stitch forming means comprising two plates located one above the other, one of said plates having a surface for supporting yarn withdrawn from said yarn spool, the other one of said plates having a plurality of parallel slots, yarn engaging members movable in said slots, and means connected with said yarn engaging members for reciprocating pairs of said yarn engaging members in succession in said slots to cause said yarn engaging members to withdraw yarn from said yarn spool and place it in wave-like formation upon said surface, said yarn extending from said surface to said stitch forming means.
  • a device for withdrawing yarn from said yarn spool and delivering said yarn to said stitch forming means comprising two plates located one above the other, one of said plates having a surface for supporting yarn withdrawn from said yarn spool, the other one of said plates having a plurality of parallel slots, yarn engaging members movable in said slots, and means connected with said yarn engaging members for reciprocating pairs of adjacent yarn engaging members in opposite directions in said slots and reciprocating said pairs in one-by-one succession in said slots to cause said yarn engaging members to withdraw yarn from said yarn spool and place it in wavelive formation upon said surface, said yarn extending from said surface to said stitch forming means.
  • a device for withdrawing yarn from said yarn spool and delivering said yarn to said stitch forming means comprising two plates located one above the other, one of said plates having a surface for supporting yarn withdrawn from said yarnspool, the other one of said plates having a plurality of parallel. slots, yarn engaging members movable in said slots, and means connected with said yarn engaging members for reciprocating groups of yarn en gaging members simultaneously and reciprocating said groups in one-by-one succession in said slots to cause said yarn engaging members to withdraw yarn from said yarn spool and place it in wave-like formation upon said surface, said yarn extending from said surface to said stitch forming means.
  • a device for withdrawing yarn from said yarn spool and delivering saidyarn to said stitch forming means comprising two plates located one above the other, one of said plates having a surface for supporting yarn withdrawn from said yarn spool, the other one of said plates having a plurality of parallel slots, yarn engaging members movable in said slots, and means connected with said yarn engaging members for reciprocating groups of yarn engaging members in one-by-one succession and reciprocating pairs of yarn-engaging members of each group in succession in said slots to cause said yarn engaging members to withdraw yarn from said yarn spool and place it in Wave-like formation upon said surface, said yarn extending from said surface to said stitch forming means.
  • a device for withdrawing yarn from said yarn spool and delivering said yarn to said stitch forming means comprising two plates located one above the other, one of said plates having a surface for supporting yarn withdrawn from said yarn spool, the other one of said plates having a plurality of parallel slots, yarn engaging members movable in said slots, and means connected with said yarn engaging members for reciprocating pairs of said yarnengaging members in succession in said slots while maintaining other yarn-engaging members in opposite ends of the slots to cause a withdrawal of yarn from said yarn spool and place it in wave-like formation upon said surface, said yarn extending from said surface to said stitch forming means.
  • a device for withdrawing yarn from said yarn spool and delivering said yarn to said stitch forming means comprising two plates located one above the other, one of said plates having a surface for supporting yarn withdrawn from said yarn spool, the other one of said plates having a plurality of parallel slots, yarn engaging members movable in said slots, rods carrying said yarn engaging members, wires connected with said rods, arms connected with said wires, rollers connected with said arms, cams actuating said rollers and a single driving shaft carrying said cams, said cams actuating said rollers to cause pairs of adjacent yarn engaging members to reciprocate in opposite directions in said slots and to reciprocate said pairs in one-by-one succession in said slots to cause said yarn engaging members to withdraw yarn from said yarn spool and place it in wave-like formation upon said surface, said yarn extending from said surface to said stitch forming means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US663972A 1956-06-11 1957-06-06 Device for delivering yarn for knitting purposes Expired - Lifetime US3026696A (en)

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Application Number Priority Date Filing Date Title
DE848098X 1956-06-11

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US3026696A true US3026696A (en) 1962-03-27

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US663972A Expired - Lifetime US3026696A (en) 1956-06-11 1957-06-06 Device for delivering yarn for knitting purposes

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US (1) US3026696A (enrdf_load_html_response)
BE (1) BE558261A (enrdf_load_html_response)
DE (1) DE1073674B (enrdf_load_html_response)
FR (1) FR1176651A (enrdf_load_html_response)
GB (1) GB848098A (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396558A (en) * 1964-11-12 1968-08-13 Ratby Engineering Company Ltd Yarn feeding mechanisms for flat bed knitting machines
US3921335A (en) * 1973-10-24 1975-11-25 Overhead Door Corp Air operated door opener

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1142531A (en) * 1914-08-22 1915-06-08 Vernon Royle Tension device.
US1397069A (en) * 1921-11-15 Knitting-machine and fabbic
US1762476A (en) * 1925-12-29 1930-06-10 John M Houghton Tension device
US2083333A (en) * 1934-02-03 1937-06-08 Hemphill Co Knitting machine
US2117412A (en) * 1936-11-10 1938-05-17 Goodrich Co B F Tension device
US2199263A (en) * 1938-08-19 1940-04-30 Scott & Williams Inc Strand-feeding device for knitting and like machines
US2223914A (en) * 1938-05-24 1940-12-03 Du Pont Thread production
US2268313A (en) * 1939-11-09 1941-12-30 Start Harry Wilfred Straight-bar knitting machine
US2273052A (en) * 1940-09-20 1942-02-17 Scott & Williams Inc Strand feeding mechanism
US2283771A (en) * 1940-04-24 1942-05-19 George Blackburn & Sons Ltd Hethod of kntting on straight-bar knitting machines
US2378947A (en) * 1944-01-25 1945-06-26 Charles L Page Method of knitting
US2378946A (en) * 1942-05-26 1945-06-26 Charles L Page Sinker
US2491438A (en) * 1947-08-25 1949-12-13 Cocker Machine And Foundry Com Beam warper accumulator or storage rolls
US2534459A (en) * 1945-04-23 1950-12-19 Scott & Williams Inc Strand feeding mechanism
US2558033A (en) * 1947-05-08 1951-06-26 American Viscose Corp Beaming apparatus
US2571678A (en) * 1947-08-23 1951-10-16 Eastman Kodak Co Yarn tensioning device
US2618444A (en) * 1950-07-28 1952-11-18 Charlotte C Taggart Yarn tensioning
US2842259A (en) * 1955-08-04 1958-07-08 Masland C H & Sons Yarn feed for needling or knitting or the like

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR590477A (fr) * 1924-12-15 1925-06-17 Ryo Catteau Sa Ets Dispositif de dévidage continu du fil de trame dans les métiers à tisser
FR56442E (enrdf_load_html_response) * 1944-07-13 1952-10-07
BE503274A (enrdf_load_html_response) * 1950-05-18

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1397069A (en) * 1921-11-15 Knitting-machine and fabbic
US1142531A (en) * 1914-08-22 1915-06-08 Vernon Royle Tension device.
US1762476A (en) * 1925-12-29 1930-06-10 John M Houghton Tension device
US2083333A (en) * 1934-02-03 1937-06-08 Hemphill Co Knitting machine
US2117412A (en) * 1936-11-10 1938-05-17 Goodrich Co B F Tension device
US2223914A (en) * 1938-05-24 1940-12-03 Du Pont Thread production
US2199263A (en) * 1938-08-19 1940-04-30 Scott & Williams Inc Strand-feeding device for knitting and like machines
US2268313A (en) * 1939-11-09 1941-12-30 Start Harry Wilfred Straight-bar knitting machine
US2283771A (en) * 1940-04-24 1942-05-19 George Blackburn & Sons Ltd Hethod of kntting on straight-bar knitting machines
US2273052A (en) * 1940-09-20 1942-02-17 Scott & Williams Inc Strand feeding mechanism
US2378946A (en) * 1942-05-26 1945-06-26 Charles L Page Sinker
US2378947A (en) * 1944-01-25 1945-06-26 Charles L Page Method of knitting
US2534459A (en) * 1945-04-23 1950-12-19 Scott & Williams Inc Strand feeding mechanism
US2558033A (en) * 1947-05-08 1951-06-26 American Viscose Corp Beaming apparatus
US2571678A (en) * 1947-08-23 1951-10-16 Eastman Kodak Co Yarn tensioning device
US2491438A (en) * 1947-08-25 1949-12-13 Cocker Machine And Foundry Com Beam warper accumulator or storage rolls
US2618444A (en) * 1950-07-28 1952-11-18 Charlotte C Taggart Yarn tensioning
US2842259A (en) * 1955-08-04 1958-07-08 Masland C H & Sons Yarn feed for needling or knitting or the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396558A (en) * 1964-11-12 1968-08-13 Ratby Engineering Company Ltd Yarn feeding mechanisms for flat bed knitting machines
US3921335A (en) * 1973-10-24 1975-11-25 Overhead Door Corp Air operated door opener

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BE558261A (enrdf_load_html_response)
DE1073674B (de) 1960-01-21
GB848098A (en) 1960-09-14
FR1176651A (fr) 1959-04-14

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