US1917763A - Knitting machine - Google Patents

Knitting machine Download PDF

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Publication number
US1917763A
US1917763A US501723A US50172330A US1917763A US 1917763 A US1917763 A US 1917763A US 501723 A US501723 A US 501723A US 50172330 A US50172330 A US 50172330A US 1917763 A US1917763 A US 1917763A
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United States
Prior art keywords
yarn
feeder
trapper
needles
feeders
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Expired - Lifetime
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US501723A
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English (en)
Inventor
Holmes Henry Harold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wildt and Co Ltd
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Wildt and Co Ltd
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Publication date
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Publication of US1917763A publication Critical patent/US1917763A/en
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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
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices

Definitions

  • the presence of the Wale-threads even when extending in their idle position inside the needle-circle, prevents an additional yarn-feeder such, for instance, as a splicing yarn-feeder, from being moved towards the needles from the interior of the needle-circle as is customary in some forms of feeding mechanism.
  • the yarn-feeder is generally moved right across the needle-circle to bring the new yarn into the hook of the needle by which it is to be first taken.
  • the present invention obviates these difiiculties in a simple and effective manner.
  • yarnfeeding means comprises in combination one or more feeders each adjustable from an idle position wherein the yarn (the free end of which will be held by a trap er) is held by the delivery eye of the feedbr outside the needle-circle and clear of the needles, to a position closer to the needle-circle, and a yarn-projector movable towards and away from the needles, which, when it is moved towards the-needles, will engage a newlyintroduced yarn at a position between the trapper and the feeder that has thus introduced the yarn and will bring the yarn into a position to be taken by the needles.
  • a yarn-feeder and a yarn-trapper therefor and a yarn-projector are disposed at a position above another yarn-feeder or feeders.
  • the loyyenone may, for instance, be a feeder for aground-thread, while the upper one may serve to introduce a splicing thread.
  • a yarnfeeder is to be considered as being above another when it is farther away from the base of the. needle considered in the lengthwise direction of the latter.
  • a ledge or platform is provided at a position above the relatively lower feeder or feeders and the trapper serves to grip the yarn supplied by the top feeder against the ledge or platform.
  • the latter may be formed in the latch-ring or may be present as a separate member.
  • the yarn-projector within the scope of the present invention may be in the form of a finger or of any other shaped member which can be moved into and out from engagement with the yarn for the purpose above specified.
  • Figure 2 is a plan of the parts shown in Figure 1;
  • Figure 3 is a side elevation of the trapper and cutter for the grouml-thread or I like yarns, looking in the direction of the arrow 3 in Figure 2;
  • Figure 4 is a side elevation of the yarnprojector and adjacent parts of the mechanism, looking also in the general direction of the arrow 3;
  • Figure 5 is a section on the line 55 of Figure 4.
  • F igure 6 is a detailed view of the catch for the splicing yarn-feeder looking from to show more clearly their operation.
  • a yarn-feeder for a splicing yarn is shown at 15 and this is projectable through a gap 16 at the upper edge of the latch-ring.
  • the gap itself may afford a ledge or platform to co-operate with a trapper-arm 17 or, alternatively, an additional platform 18 may be provided which projects into the gap 16.
  • the yarn-trapper 17 is in the form of a finger or lever pivoted at 19 in a-fixed bracket 20 and is arranged to swing upwardly and downwardly away from and on to the platform 18.
  • yarn-feeder 15 there is also a yarnprojector 21 which, in this case, is movable in company with the feeder15.
  • yarnprojector 22 which is formed separately from, and movable independently of, the yarn-feeders.
  • a trapper and cutter for the yarn-feeders 10, 11 and 12 is indicated as composed of a plate 24, jaws 25 and 26 respectively which can be raised from, or lowered towards, the plate 2 1 and light strip springs 27.
  • the cam mechanism is such that when the splicing yarn is to be introduced the needles will be raised somewhat in the manner indicated in Figure 8, and the yarn-feeder 15 with its associated projector 21 will be moved from an idle position into the active position shown in Figure 8. In this position the yarn-projector 21 moves sufficiently forward to press a portion of the bight of the yarn extending between the feeder 15 and the trapper-arm 17 under a descending needle and the position at which the projector crosses the needle-circle is such that the needle will have been drawn downwardly by a needleopcrating cam sufiiciently rapidly to avoid fouling the projector 21.
  • the ground-thread-feeder 10 is shown as supplying its yarns to the needles. ⁇ Vhen it is desired to introduce another yarn, for example, to replace the yarn that is being fed from the feeder 10, another feeder is brought into an active position and this is represented at Figure 9 where the feeder 11 has been not only moved nearer to the needlecircle but has been slightly raised so that its feeding eye is above the tops of the needles:
  • the interchangeable yarn-feeders 10, 11 and 12 are slidingly mounted in an inclined guide 31.
  • the guide 31 consists of a channel wide enough to receive the three yarn-feeders 10, 11 and 12 side by side, and in order to ensure a steady guiding of each of them each yarnfeeder is grooved on one side, and on its other side has a rib, such as 32, which enters the corresponding groove in the adjacent yarn-feeder.
  • the outermost feeders engage fixed bracket 37,
  • a projection extends upwardly from the tail of each feeder and is engaged with a jaw at the end of an arm 34 of a bellcrank 34, 35.
  • a notch 38 at the tail end of each yarn-feeder can, projected fully towards the needle-circle, by actuation of the appropriate bellcrank, be engaged by the nose of a catch 39.
  • each yarnfeeder There will be three such catches, one for each yarnfeeder, and the nose of each is held pressed towards its yarn-feeder by means of a spring 40 so that immediately a feeder has been projected sufiiciently forward the nose will enter the notch 38 to hold the yarn-feeder projected.
  • Each bellcrank 34, 35 is pulled by a spring 4] anchored atone end to a fixed bracket 42 and at the other end to a tailpiece 43 extending in line with the arm 34.
  • the effect of a spring 41 is normally to tend to move its bellcrank so that the arm 34 retracts the associated yarn-feeder.
  • the yarn-projector 22 is slidingly mounted in a grooved side wall of the guide or bracket 31 so that it is movable towards and away from the needles in a substantially radial direction. It is held in the groove by means of a guard-plate 44 and above it slides a control abutment 45 having a downwardly-projecting tail 46. From the abutment 45 projects a lateral pin 47 which engages in a slot 48in a swinging lever 49 pivoted at 50, and normally pulled rearwardly by means of a spring 51.
  • the free end of the lever 50 has another slot 52 which is engaged by a pin 53 extending outwardly from the yarnprojector 22 so that as the abutment 45 is moved inwardly or outwardly the projector will also be moved inwardly or outwardly, butithrough a greater distance owing to the mo iement-magnifying effect of the swinging lever 49.
  • the abutment (or another, if preferred) will engage the tail 46 of the sliding abutment'45 to move the yarn-projector 22 forwardly, that is to say, from the full-line positions shown in Figures 2 and 4, to the dotted line position, thus passing the yarn, which up to that moment extended between the feeder and the trapper, positively into the hook of a descending needle shown at 122 in Figs. 4 and 5.
  • the feeder 10 can be retracted by another abutment which engages the outer end of the pivoted catch 39 to disengage the nose of that catch from the notch 38 of the yarn-feeder 10.
  • the trapper and cutter comprises a fitting which can be attached by means of screws 54 and comprises a plate 24, a light strip spring 27, and two side jaws 25 and 26 whereof the latter are interconnected by a yoke 55 so as to move simultaneously.
  • the two jaws are both pivoted on a pin'56 so that pressure on the top of the yoke-piece 55 will raise both jaws above and clear of the plate 24.
  • This pressure is imparted by the sloping face 57 of a slider 58, the tail portion 59 of which is in the path of an external abutment which may be the same as that which operates on the bellcrank arms 35 and the tailpiece 46 of the slider 45, or it may be another abutment controlled in well known manner from a pattern-chain or equivalent patternc ontrol mechanism.
  • the slider 58 is normally held in its retracted or outward position by means of a spring 60 anchored at one end to the slider, and at the other to a fixed pin 61 secured in a bracket 62 which forms a guide wherein the slider 58 can move.
  • the jaw 25 acts as a means to hold the yarn between it and the plate 24, whereas the jaw 26 serves as a cutter knife to sever the trapped yarn.
  • the distance between the trapper and the projector 22 is made extremely small so that the loose end of yarn which will extend from the needle that first takes the yarn will always remain on one side of the fibre (the inner side of the finished fabric) and will only be a very short length.
  • the same remarks apply to the relative positions of the feeder 15 and projector 21 for the splicing yarn.
  • the splicing yarn feeder is in the form of a slider guided in a slot in a fixed bracket 63 and has at its'outer end a tail-piece 64 to be engaged by an external and adjustable abutment that is controlled by a pattern-chain or equivalent mechanism.
  • the splicing yarn feeder is spring-urged into its feeding position by means of a coiled spring 65 anchored at one end at 66 on the bracket 63 and at the other end to a projection 67 fastened to the slider near the tail-piece 64.
  • a pivoted lever 68 ( Figures 5, 6 and 7) having a slot 69 at its upper end to engage a pin 70 extending laterally from the yarn-feeder 15 and pivoted intermediate its two ends at 71 in a relatively fixed part.
  • the lower end of the lever 68 terminates in an abutment 72 which can be engaged by a cam 73 attached to a stationary part of the machine, e. g. the sinker ring.
  • the trapper for the splicing yarn is shown as a base-plate 18 above which the yarnfeeder slides and on to which the trapper 17 can press.
  • the bracket 20 carrying the trapper mechanism is pivotally mounted by means of a screw 177 on a main bracket 78 which carries all the parts above described so that the trapper mechanism can be swung out from the position shown in Figure 1 to allow the latch-ring to be swung upwardly,
  • Two means are provided for actuating the trapper 17, one is by means of a lever 79 pivoted at 80 in a pillar 81 extending from a part'of the bracket 31.
  • the lever 79 has a tail 82 for engagement wit-h an adjustable abutment operated from the pattern mechanism.
  • the forward end of the lever 79 engages beneath the trapper 17 so that when the tail end 82 is pressed inwardly the lever 79 will be raised in order to lift the trapper.
  • abutment 83 is hinged to the trapper so that on the return movement of the lever 68 the arm 82 can pass into the position shown in Figure 7 by swinging the abutment without raising the trapper.
  • the cam 73 In order to withdraw the splicing yarn the cam 73 is brought into engagement with the abutment 72 to swing the lever 68 so as to withdraw the yarn-feeder, and in so doing the trapper 17 will be raisedby means of the arm 82 momentarily to permit the yarn to enter between the trapper and the plate 18 and immediately the yarn has thus entered into a position to be trapped the lever 82 will move clear of the abutment 83 and the trapper will drop.
  • the invention so far as it applies to a splicing yarn is particularly useful in introducing a high-splicing yarn in a hose machine in which vertical Wale-threads are knitted by the needles in addition to a ground-thread or threads.
  • the invention is applicable to the mechanism described in prior British Patent No. 327,958, in which there is a Wale-thread for every needle. It is also applicable to the machines described in British Patents Nos. 328,026, 327,987 and 327,988, but is not limited to these particular applications.
  • a knitting machine, yarn-feeding means comprising a plurality of yarn feed eyes and a yarn-trapper associated with at least one of them, the said yarn-trapper and its associated feed eye being disposed at a position above the feed eye of another yarn-feeder.
  • a knitting machine, yarn-feeding means comprising a plurality of yarn feed eyes and a yarn-trapper associated with at least one of them, the said yarntrapper and its associated feed eye being disposed at a position above the feed eye of another yarn-feeder, and a ledge or platform cooperating with the yarn-trapper and situated also above the said other yarn-feeder.
  • a knitting machine, yarn-feeding means comprising a latch-ring having in its two apertures one above the other, yarn-feeders presented in the two apertures and a yarntrapper associated with at least one of them, whereof the yarn-feeder presented in the upper aperture is a splicing yarn-feeder.
  • yarn-feeding means comprising a latch ring having in it two apertures one above the other. yarnfeeders presented in the two apertures and a yarn-trapper and a yarn-projector associated with the feeders presented to one at least of the apertures.
  • yarn-feeding means comprising in combination a plurality of feeders at one level, a yarn-trapper associated with those feeders, and at another level a splicing yarn-feeder, a yarn-projector additional to the feeder and a yarn-trapper therefor.
  • yarn-feeding means comprising in combination a plurality of feeders atone level, a yarn-trapper associated with those feeders, and at a higher level a splicing yarn-feeder, a yarn-projector additional to the feeder and a yarn-trapper therefor.
  • yarn-feeding means comprising in combination a plurality of feeders at one level, a yarn-trapper and a yarnprojector associated with those feeders, and at another level a splicing yarn-feeder, a yarn-projector additional to the feeder and a yarn-trapper therefor.
  • yarn-feeding means comprising in combination a plurality of yarn-feeders each movable towards and away from a feeding position and each slidingly engaged by interfitting portions with a neighboring feeder.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US501723A 1929-12-14 1930-12-11 Knitting machine Expired - Lifetime US1917763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38371/29A GB344937A (en) 1929-12-14 1929-12-14 Improvements in or relating to knitting machines

Publications (1)

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US1917763A true US1917763A (en) 1933-07-11

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Application Number Title Priority Date Filing Date
US501723A Expired - Lifetime US1917763A (en) 1929-12-14 1930-12-11 Knitting machine

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US (1) US1917763A (de)
DE (1) DE600726C (de)
GB (1) GB344937A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549701A (en) * 1949-04-15 1951-04-17 Supreme Knitting Machine Co In Apparatus for knitting striped fabric

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207035B (de) * 1960-03-11 1965-12-16 Mayer & Cie Maschinenfabrik Fadeneinlegevorrichtung fuer Ringelapparate an Doppelzylinder-Rundstrickmaschinen
DE1273113B (de) * 1961-09-08 1968-07-18 Hans Mantel Fadenschneidvorrichtung an Rundstrickmaschinen
DE1230166B (de) * 1961-10-07 1966-12-08 Morat Gmbh Franz Fadenwechselvorrichtung fuer Rundstrickmaschinen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549701A (en) * 1949-04-15 1951-04-17 Supreme Knitting Machine Co In Apparatus for knitting striped fabric

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DE600726C (de) 1934-07-30
GB344937A (en) 1931-03-16

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