US2292287A - Warp knitting machine - Google Patents

Warp knitting machine Download PDF

Info

Publication number
US2292287A
US2292287A US313788A US31378840A US2292287A US 2292287 A US2292287 A US 2292287A US 313788 A US313788 A US 313788A US 31378840 A US31378840 A US 31378840A US 2292287 A US2292287 A US 2292287A
Authority
US
United States
Prior art keywords
needles
warp
needle
eccentrics
tongues
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 - Lifetime
Application number
US313788A
Other languages
English (en)
Inventor
Peel Robert
Morrison John Lamb Murray
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.)
F N F Ltd
FNF Ltd
Original Assignee
FNF Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by FNF Ltd filed Critical FNF Ltd
Application granted granted Critical
Publication of US2292287A publication Critical patent/US2292287A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies

Definitions

  • WARP KNITTING MACHINE Filed Jan; 15, 1940 7 Sheets-Sheet 6 In vcntor 'ETEEL Aug. 4 1942.
  • R. PEEL ETAL WARP KNITTING MACHINE Filed Jan. 13, 1940 7 Shets-Sheet 7 Fig. 12.
  • Such machines may be provided with needles arranged to co-operate with independent tongues and such a needle comprises a tubular or grooved shank having a hook at one end, the tongue being arranged to move to and fro relatively to the needle between a position in which the tip of the tongue covers the needle hook and a position in which the tip of the tongue is withdrawn into the groove or bore in the shank.
  • relative movement is usually efiected by imparting to-and-fro movement both to the needle and to the tongue.
  • These elements may be mounted to move in a vertical straight line path. In that event, the side of the needle on which the tip arcuate in the planes of the hooks.
  • the tongue is withdrawn from the hook, yarn is laid over the front of the tapered part.
  • the needle is withdrawn to draw the newly laid yam into a loop which is pulled through the previous loop as the latter is cast 01! over the end of the hook, while the hook is closed by the tip of the tongue overlapping the hook.
  • the tension on the loop of yarn being cast off over the tongue may be considerable and the tip of the tongue is unsupported between the time when it begins to emerge'from the groove or bore in the shank and the time when it overlaps the tip of the needle hook. Accordingly, if the tip of the tongue is thus unsupported when a loop is being cast off, the load due to' the yarn may bend the tip of the tongue to an undesirable extent. The result may then be that damage is :done by the tip of'the tongue colliding with the tip of the needle hook or that a flaw arises in the fabric due to the loop, which ought to be cast off, becoming caught on the tip of the needle hook or moving back into the hook.
  • a warp knitting machine is provided with mechanism for imparting to hook needles and to independent tongues, allocated respectively to the needles and arranged to cover the needle hooks when loops are cast off from the needles, to and fro motion such that the tongues undergo no substantial movement relatively to the needles, while covering the needle hooks,'throughout a substantial part of each of those strokes of the needles, that result in the casting off of the loops.
  • the tongues are arranged to overlap the.
  • the threads are laid or lapped on the needles by warp guides, and a warp guide in any one cycle of operation may be caused to pass between a pair of needles to the back thereof.
  • a warp guide in any one cycle of operation may be caused to pass between a pair of needles to the back thereof.
  • two or more warp needles from the back to the front and then the two warp guides are moved longitudinally in opposite directionsto lap their respective threads over different needles, or in the'same direction.
  • each bar carries a row of warp guides, and to effect the lapping, it is convenient to swing each bar about a longitudinal axis to bring the associated warp guides from the back to the front of the needles.
  • Each bar is then moved longitudinally so that the warp guides pass across the fronts of the needles.
  • the bars are swung to bring the warp guides from the front to the back of the needles.
  • the two or more warp guides passing between a pair of needles follow one another as they pass the needles.
  • the invention involves a warp knitting machine provided with mechanism for imparting to hook needles to-and-fro movement and with tongues allocated respectively to the needles and arranged to cover the needle hooks when loops are cast oil from the needles, in which the said to-and-fro movement includes a phase which is actually or substantially a dwell extending over the period starting when the warp guides are passing between the needles before lapping and ending when the warp guides are passing between the needles after lapping.
  • the dwell occurs when the needles are at the top of their stroke prior to drawing a new loop.
  • the needles need not be quite stationary during the dwell but may undergo slight movement.
  • whole of the needle movement is arranged to take place so that the accelerations are as small as possible consistent with the correct motions for knitting, and may be such that the movement consists of harmonic components which are not of high frequency in relation to the machine speed or include high frequency components of as small amplitude as possible. found advantageous to arrange the driving mechanism for the tongues so that these remain substantially stationary, or move quite slowly, while the warp guides lay the threads safely in the needle hooks without contact with the tips of the tongues.
  • the needle stroke must be greater than in the case where provision is made for the needles to dwell.
  • the tips of the tongues shall remain concealedin the needle shanks for a period starting when the newly formed loops are passing up the last portions of the taperedparts I of the needles and ending when the warp guides are passing between the needles after lapping.
  • the reason for this is that there are limits to the proportion of each knitting cycle that can be occupied by the lapping movement of the warp guides and in order to insure clear paths for the threads as they are laid on the needles, the tips of the tongues should not just momentarily be withdrawn into the needles shanks.
  • the movements of the tongues may consist of harmonic components, with accelerations as small as possible, which combine to give the necessary dwell.
  • the required movements can be imparted to th needles and tongues through the medium of cams. drive the needles or the tongues, when the movements of these elements are to include phases which are actually or substantially dwells, by In that event, two or more eccentrics acting in parallel and running at different speeds are used to drivethe needles, and
  • eccentrics When eccentrics are substituted for these cams, they can be manufactured from ordinary mild steel, because. the inertia forces at high speed can be distributed over the greater surface areas through the eccentric straps. Splash lubrication may be used, and accurate production is neither difficult nor expensive.
  • a particular feature of the invention consists in arranging the sinkers in a warp knitting machine to be operated by eccentrics acting in parallel and running at different speeds. It has been found that the somewhat elaborate motion required for the sinkers can be imparted simply and effectively by such an eccentric arrangement.
  • Figure 1 is a vertical section through part of a warp knitting machine
  • Figure 2 is a timing diagram showing the movements of the knitting elements in the machine
  • Figure 3 is a sectional elevation of parts for driving the knitting needles in the machine
  • Figure 4. is a sectional elevation of parts for driving the warp guides in th machine
  • Figure 5 is a sectional elevation of sinker mechanism in the machine
  • Figure 6 is a sectional elevation on the line VIVI in Figure 12 of part of another warp knitting machine
  • Figure 6A shows further details of the machine appearing in Figure 6.
  • Figure 7 is a sectional elevation of part of a third form of warp knitting machine
  • FIGS 8, 9, 10 and 11 show modifications of certain parts appearing in Figure 6;
  • Figure 12 is a sectional front elevation of the right hand half of the machine appearing in Figure 6.
  • the machine to be described with reference to Figures 1 to-5 has a row of knitting needles I, Figure 1, which are carried vertically and side by side by blocks 2. The latter are mounted side by side on a long needle bar 3 to which they are secured by clamp plates 4.
  • the needle bar 3 is supported at points distributed along its length by members 5 at the upper ends of vertical rods 6 which respectively extend upwards from casthe vertical movement is imparted by eccentrics 9 and I0 carried by shafts H and I2.
  • the shafts l I and I2 arethe main driving shafts of the machine and, during the operation of the machine,
  • Each needle I has a tubular shank which is tapered at its upper end la. and merges into the needle hook .lb.
  • the needles extend through the blocks 2 and a tongue 26 extends upwards into the shank of each needle.
  • are carried by blocks 22 secured to a long tongue bar 23 by clamp plates 24.
  • the tongue bar 23 is mounted at the top of rods 25. There are as many of these rods 25 as there are rods 6 supporting the needle bar 3, and the rods 25 pass respectively into the casings i. As viewed'in Figures 1 and 3, each rod 25 lies behind the associated rod 6.
  • the rods 25 are constrained to move up and down in a vertical direction in the same way asthe rods 6, and are driven by eccentrics on the shafts I! and i2.
  • to the rods 25 is similar to the mechanism connecting the rods to the eccentrics 9 and H].
  • the throws of the eccentrics associated with, the tongues and their phase relationship is such that the tongues move up and down in the manner shown by curve B in Figure 2. It will be seen that the tongues remain substantially stationary during 'the first 60 of the period of needle dwell and then during the remaining 60 of that period travel upwards a distance of about 0.14 inch.
  • the warp guides 26 ( Figure 1). There are two rows of these warp guides, the rows being carried respectively by guide bars 21. These guide bars are carried by a shaft 28 which is rocked to and fro about its axis. usual, can be moved longitudinally to and fro relatively to the rock shaft 28. In each cycle of operation of the machine the warp guides 26 are first swung so as to pass between .the needles from the backs to the fronts thereof. Figure 1 Furthermore, the guide bars, as'is shows the warp guides in the course of such movement.
  • the leading warp guides pass between the needles substantially at the point a in curve C of Figure 2 which represents the swinging motion of the warp guides in each cycle of operation.
  • the longitudinal movement of the warp guides is represented by a curve D in Figure 2, and the warp guides pass across the fronts of the needles between the instants c and :2.
  • the warp guides are swungback from the fronts of the backs of the needles, the leading warp guides passing between the needles in the vicinity of the instant b in Figure 2.
  • the timing of the needles and tongues in addition to enabling the warp guides to pass between the needles in the desired paths relatively to the needles, has further advantages in that it gives considerable latitude in the timing of the other knitting parts.
  • the oscillation of the warp guides about the axis of the shaft 20 takes place over a period of about 220 (between the instants 'e and Figure 2). If the needles did not dwell, this period would have to be shortened considerably or the needle stroke increased substantially.
  • the fact that the oscillation of the warp guides can take place over a period of about 220 means that the inertia loads due to operating the warp guides, when the machine is running at very high speeds,
  • warp guides can be oscillated by multi-eccentric mechanism and the advantages inherent in such mechanism can be obtained.
  • period between the points e and f (curve C) is substantially longer than the period during which the needles dwell, because the needles only have to dwell between the time when the warp guides are passing between the needles at the beginning of lapping and the time when the warp guides are passing between the needles at the end of lapping, and the warp guides move some distance in their oscillation about the axis of the shaft 20 before reaching the backs of the needles and after passing between the needles in their return movement.
  • the warp guides are oscillated through the medium of units each driven. by the pair of parallel horizontal shafts H and i2 ( Figure 4). These shafts respectively carry eccentrices 32 and 33.
  • the eccentrics are respectively embraced by straps 34 and 35 on eccentric rods 36 and 31.
  • the upper ends of these eccentric rods are respectively pivoted to the ends of a two-armed lever 38 pivoted at its mid-point at 39 to a rocker 4-2 pivoted about afixed axis 4!.
  • the rocker 40 is connected to the rock shaft 28 through the medium of a link pivoted at its upper end to an arm 42 ( Figure l) rigid with the rock shaft 28..
  • the eccentrics and mechanism immediately associ 'ated therewith are housed in a casing 43 and the link 4
  • a bellows connection 44 is provided between the link" and the opening.
  • the warp guides are oscillated in the manner shown by the aforementioned curve C in Figure 2, and it will be seen that, when the warp guides have undergone the oscillation necessary for positioning the threads in the needle hooks, the warp guides are inevitably moved back slightly towards the backs of the needles, the extremity of this backward movement being at the point g in curve C.
  • the guide bars are moved longitudinally by pat- 'tem wheels acting against return springs.
  • the line A represents the movement of the tip of each needle hook while the curve B represents the movement of the tip of the associated tongue. It will be seen that during the period that the threads are being laid on the needles, that is the period intervening between the instants a and b, the tongue is concealed within the shank of the associated needle, and during the major part of the downward stroke of the needle the tip of the tongue is overlapping the tip of the needle so that the tip of the needle hook supports the tongue while the loop is being cast off.
  • Such mechanism includes the shafts H and I2 respectively carrying eccentrics 52 and 53. These eccentrics are embraced respectively by eccentric straps 54 and 55 on eccentric rods 56 and 51. The upper ends of these eccentric rods are pivoted respectively at the ends of a two-armed lever 58 pivoted at 59 to a rocker 6U pivoted about a fixed axis 6
  • a link 62 connects the rocker 60 with an arm 63 fixed to a rock shaft 94.
  • the rock shaft 94 has arms 65 rigidly secured to it.
  • Each arm 95 forms part of a Watts parallel motion linkage including a member 31 pivoted at 98 to the arm 65 and at 68 to the upper end of a link 89 pivoted at its lower end about a fixed axis I0.
  • These linkages give straight line movement to sinkers 1
  • relatively to the needles I is indicated by chain lines in Figure 5.
  • the eccentric 53 is rotated at twice the speed of the eccentric 52, the shafts II and I2 being the main shafts of the machine.
  • the sinkers move as shown by the curve E in Figure 2.
  • Eccentric driving units for the sinkers may be distributed along the length of the rock shaft 64 or one such unit may be mounted towards each end of the rock shaft. Similarly, a unit such as that shown in Figure 4 may be mounted at each end of the rock shaft 28 for the guide bars.
  • the arrangement of the eccentrics to provide the motions shown in Fig. 2, the angular setting given for each eccentric being the angle between the upward vertical line through the centre of its shaft and the eccentric throw measured in the direction of rotation of the shaft at the instant represented by 0 in Figure 2 is as follows:
  • the latter has an upwardly extending arm 94 pivoted at 95 to a member 96 extending from the sinker bar 91.
  • the member 96 is also pivoted at 98 to a link 99, pivoted to the machine frame at I00.
  • each ro'd I02 carries a two-armed lever 81d, similar to the lever 81, pivoted at its ends to eccentric rods such as 85a, similar to the eccentric rods 85, 85, driven by a pair of eccentrics 83a and 840. respectively on-the shafts 80 and 8
  • Similar driving mechanism is provided for the tongues (see Figures 6A and 12), carried by the tongue bar I04, carried by rods such as I02a, similar to the rods I02.
  • Eachsuch rod I02a is pivoted at 8812 to the centre of a similar to the lever 81.
  • This lever is pivoted by connecting rods, such as 85band 851) ( Figure 6A), to a pair of eccentrics 83b and 84b respectively on the shafts 80 and 8
  • guides I05 are swung about the axis of a rock shaft I06 by further pairs of'eccentrics such as 830 and 840 ( Figure 12) respectively on the shafts 80 and 8 I.
  • Figure '1 shows a modified method of imparting the necessary to-and-fro motion to hook needles of the kind employed in the construction of Figure 6.
  • the motion of the needles is derived from eccentrics H0 and 011 respectively mounted on shafts III being arranged to rotate at twice the speed of the shaft III.
  • the eccentrics H0 and H011 impart to-and-fro motion respectively to eccentric rods H3 and H4 pivoted at their upper ends to the ends of a two-armed lever H5. The latter is pivoted at its centre both to a rocker II8 and to a link H1.
  • the rocker H6 is mounted to swing about a fixed axis 8 and the upper end of the link 1 is pivoted to one end of a two-armed lever II9 mounted to swing about a fixed axis
  • These eccentrics are connected by ec-' two-armed lever I38 and the ends of the lever I4I are pivoted retwo-armed lever 81b,
  • the warp and H2, the shaft II2 I20 The warp and H2, the shaft II2 I20.
  • the end of the lever H9 remote from the I link H1 is pivoted at I2I to a member I22 extendingdownwards from the needle bar I23.
  • the lower end of the member I22 is pivoted at I24 to a link I25 which in turn is pivoted at I25 about a fixed axis.
  • the linkage including the member I22, the two-armed lever I I9 and the link I25 provides a Watts parallel motion linkage, so that the needles I21 move in a path which is substantially a straight line.
  • the linkage is designed so that a straight line movement is imparted'to the lower ends of the needles at which the tongues I28 enter the needles.
  • the member I22 distributed along the length. of the needle bar I23, and each of these is associated with members similar to the lever H8, and with links similar to the link I25-
  • the associated tongues are carried by a bar which is moved up nism shown in respect of the needles.
  • FIG. 8 shows an alternative mechanism for driving the sinkers.
  • the sinker bar I28 carriesmembers I30, each pivoted at I3I to a link I32, which in turn is pivoted to the machine frame at I33.
  • the member I30 is pivoted also at I34 to an arm I35 fixed to a rock shaft I35, the latter also'carries an arm I31 connected by a, link I38 to a rocker I39 pivoted about a fixed axis I40.
  • I is-pivoted at I42 to the rocker spectively to the upper ends of eccentric rods I43 and I44. Straps at the lower ends of these eccentric rods embrace eccentrics I45 and I46 carried respectively by shafts I41 and I48. The shaft I48 rotates at twice the speed of the shaft I41.
  • the sinker bar I48 is carried by arms I50 secured to a rock shaft ISI.
  • This rock shaft carries an arm (not shown) such as the arm I31 in Figure 8 or the arm 82 in' Figure 6.
  • This arm is connected to driving mechanism such as that shown in Figure 8 or in Figure 6.
  • a warp knitting machine in combination, a plurality of hook needles mounted for toand-fro movement, a plurality of tongues allocated respectively to said needles and mounted for to-and-fro movement relatively to said needles to cover and uncover the hooks thereof, a plurality of warp guides operative to lap threads on said needles, mechanism adapted to impart to said needles to-and-rfro motion including a phase which is substantially a dwell and mechanism adapted to impart to saidtongues to-andfro motion including a phase which is substantially a dwell, said dwells occurring while said warp guides lay threads on said needles.
  • a warp knitting machine in combination, a plurality of hook needles mounted for toand-fro movement, a plurality of'tongues allocated respectively to said needles and mounted for to-and fro movement relatively to said needles to cover and uncover the hooksthereof, a plurality of warp guides operative to lap threads on said needles, and mechanism, including a plurality of eccentrics acting in parallel and arranged to rotate at different speeds, connected to impart to said needles to-and-fro movement including a phase which is substantially a dwell extending over. a period starting when said warp guides are passing between said needles at the beginning of lapping and ending when said warp guides are passing between said needles at the end of lapping.
  • a warp knitting machine in combination, a plurality of hook needles mounted for toand-fro motion, a plurality of tongues allocated respectively to said needles and mounted for toand-fro movement relatively to said needles to cover and uncover the hooks thereof, a plurality of warp guides operative to lap threads on said needles, and mechanism, including two eccenof said eccentrics is rotated at twice the speed of the other, to-and-fro motion including a phase I which is substantially a dwell extending over a ping and ending when said warp guides are passing between said needles at the end of lapping.
  • two eccentrics respectively mounted for rotation about parallel axes, two eccentric rods a1- located respectively to said eccentrics and each including an eccentric strap embracing its re,- spective eccentric, a lever pivoted at one point to one of said eccentric rods and at another point to another'of said eccentric rods, and a needle rod mounted for straight line reciprocation, hook needles supported by said needle rod, the latter being pivoted to said lever to receive therefrom, when one of said eccentrics is rotated at twice the speed of the other, to-and-fro motion including a phase which is a substantial dwell.
  • a warp knitting machine in combination, a plurality of hook needles mounted for toand-fro movement, a plurality of tongues allocated respectively to said needles and mounted for to-and-fro movement relatively to said needles, a plurality of warp guides mounted to swing to and fro about an axis, a rocker mountedto swing about a second axis and connected to said warp guides, two eccentrics, eccentric rods allocated respectively to said eccentrics and each including an eccentric strap embracing its respective eccentric, a lever pivotedrespectively at two points to said eccentric rods and at an intermediate point to said rocker, whereby said warp guides are swung first from the backs of said needles to the fronts thereof and secondly from the fronts thereof to the backs thereof, and
  • a warp knitting machine in combination, a plurality of hook needles mounted for toand-fro movement, a plurality of tongues allocated respectively to said needles to cover and uncover the hooks thereof, a plurality of warp guides operative to lap threads on said needles, and mechanism adapted to impart to said needles smooth to-and-fro movements alternating with substantial phases which are substantially dwells, a plurality of sinkers mounted for to-and-fro movement,,and two eccentrics mounted to act in -ed for 'to-and-fro movement and allocated respectively tosaid needles to cover and uncover the hooks thereof, a plurality of warp guides operative to lap threads on said needles and mounted to swing to and fro about an axis in performing said lapping operation, a plurality of sinkers mounted for to-and-fro movement, and four mechanisms allocated respectively-to said 'needles, tongues, warp guides and sinkers to impart said to-and-fro movements thereto, each said mechanism comprising a plurality of eccentrics mounted to
  • a plurality of hook needles mounted for toand-fro movement, a plurality of tongues mounted for to-and-fro movement and allocated respectively to said needles to cover and uncover 7.
  • a plurality of hook needles mounted for toand-fro movement, a plurality of tongues allocated respectively to said needles and mounted for to-and-fro movement relatively to said needles to cover and uncover the hooks thereof, a
  • plurality of warp guides mounted to swing about an axis and operativeto lap threadson said needles, mechanism including two eccentrics acting in parallel and operative, when one eccentric is' rotating at twice the speed of the other, to impart the swinging movements to said warp guidesin the thread lapping operation, and mechanism adapted to impart to said needles to-and-fro movement including a phase which is substantially a dwell extending over the thread lapping operation.
  • a warp knitting machine in combination, a plurality of sinkers mounted'for toandfro movement, and two eccentrics mounted to act in parallel and operatively connected to said sinkers to impart to same, when one said eccentric is rotating at twice the speed of other said eccentric, smoothto-and-fro movements 'alternating with relatively prolonged periods of dwell.
  • a warp knitting machine in combination, a plurality of sinkers, mounted for to-andfro movement, two eccentrics respectively mounted for rotation about parallel axes, eccentric rods allocated respectively to said eccentrics and each including a strap embracing its respective eccentric, a lever pivoted at one point to one of said eccentric rods and at anotherthe hooks thereof, a plurality of warp guides operative to lap threads on said needles and mounted to swing to and fro about an axis in performing said lapping operation, a plurality of sinkers mounted for to-and-fro movement, and four mechanisms allocated respectively to said needles,
  • each said mechanism comprising two eccentrics mounted to rotate about parallel axes and operative when one of said eccentrics is, 'rotating at twice the speed of the other.
  • a warp knitting machine in combination, a plurality of needle blocks, a plurality of substantially vertical hook needles secured parallel to each other in each block, a needle bar mounted for to-and-fro movement in a substantially vertical direction, a detachable clamp plate operative to secure said blocks to the top of said needle bar, a member adapted to secure said clamp plate .upon said needle blocks and arranged to pass through said needle bar 'to a point where said member is readily accessible,
  • a tongue bar mounted for to-and-fro movement
  • aplurality of needle blocks in combination, a plurality of substantially vertical hook needles secured parallel to each other in each-block and each said needle having'a tubular shank, a pluralityof tongues respectively arranged to slide to and fro.
  • a plurality of tongue blocks each carrying some of said tongues, a-needle bar, a detachable clamp plate operative to hold said needle blocks on top of said needle bar, a memberadapted to secure said clamp plate upon said needle'bmcks and arranged to pass substantially vertically through said needle bar to a point where it is readily accessible and a second detachable clamp plate operative to hold said tongue blocks on said tongue bar.
  • a plurality of hook needles having tubular shanks, a plurality of tongues allocated respectively to the needles and operative to slide to and fro in said shanks,.
  • a plurality of warp guides mounted to swing to and fro between the needles and operative to lap threads on same, means for moving said tongues to and fro and means for moving said needles to and fro, said two means being adapted to cause the tips of said tongues to overlap the needle hooks and then to withdraw into said tubular shanks fora period starting when said guides are passing between said needles before lapping and ending when said warp guides are passing between said needles after lapping.
  • a bar carrying said needles a plurality of tongues allocated respectively to said needles and mounted to slide to and fro in said hollow shanks, a bar carrying said tongues, mechanism including two eccentrics arranged to turn uniformly at different speeds for imparting to-and-fro motion to said needle bar and mechanism comprising two page,
  • a warp knitting machine in combination a plurality of book needles having hollow shanks, a plurality of independent tongues allocated respectively to said needles and mounted to undergo movement relatively to same and mechanism for imparting to-and-fro motion to said needle bar including two eccentrics mounted to rotate uniformly at different speeds, eccentric rods adapted to be moved to-and-fro respectively by said eccentrics, a link interconnecting said eccentric rods, said link being pivoted at a point intermediate to said rods to a vertical pillar carrying at its upper end said needle bar.
  • a warp knitting machine in combination, a plurality of hook needles, a bar carrying said needles, an arm fixed to said bar, a lever pivoted at one point to swing about a fixed axis and, at a second point to said arm.
  • pivoted arms supporting said sinkers, two eccentrics connected to rotate at difierent speeds, eccentric rods arranged to be moved to and fro respectively by said eccentrics and mechanism interconnecting said eccentric rods and one of said arms to move that arm to and fro about its pivotal axis.
  • a plurality of tongues allocated respectively to said needles and mounted for to-andfro movement relatively to said needles to cover and uncover the hooks thereof and mechanism operative to impart to-and-fro motion to said needles and to said tongues such that said ROBERT PEEL.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US313788A 1939-02-14 1940-01-13 Warp knitting machine Expired - Lifetime US2292287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4876/39A GB524969A (en) 1939-02-14 1939-02-14 Improvements in or relating to warp knitting machines

Publications (1)

Publication Number Publication Date
US2292287A true US2292287A (en) 1942-08-04

Family

ID=9785481

Family Applications (1)

Application Number Title Priority Date Filing Date
US313788A Expired - Lifetime US2292287A (en) 1939-02-14 1940-01-13 Warp knitting machine

Country Status (5)

Country Link
US (1) US2292287A (enrdf_load_stackoverflow)
BE (1) BE469889A (enrdf_load_stackoverflow)
DE (1) DE975841C (enrdf_load_stackoverflow)
FR (1) FR937829A (enrdf_load_stackoverflow)
GB (2) GB525255A (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428405A (en) * 1945-12-18 1947-10-07 Vanity Fair Mills Inc Knitting machine
US2461583A (en) * 1946-12-30 1949-02-15 Vanity Fair Mills Inc Knitting machine
US2476344A (en) * 1945-10-15 1949-07-19 Vanity Fair Mills Inc Knitting machine
US2508209A (en) * 1945-10-15 1950-05-16 Vanity Fair Mills Inc Knitting machine and method
US2562034A (en) * 1942-06-03 1951-07-24 Fnf Ltd Knitting machine needle motion
US2700285A (en) * 1955-01-25 Bellini
US2711092A (en) * 1952-07-05 1955-06-21 Peters Cora Lee Worthington Method of and machine for warp knitting
US2714811A (en) * 1952-09-18 1955-08-09 Vanity Fair Mills Inc Knitting machine needle structure and operating means therefor
US2733583A (en) * 1952-08-05 1956-02-07 Knitting machine
US2907192A (en) * 1955-01-25 1959-10-06 Textile Machine Works Sinker operating mechanism for knitting machines
US2957326A (en) * 1957-02-26 1960-10-25 Hobourn F N F Ltd Warp knitting machines
US2959948A (en) * 1955-02-04 1960-11-15 Hobourn F N F Ltd Flat warp knitting machines
US2984998A (en) * 1957-10-30 1961-05-23 Liebrandt Driving mechanism for warp knitting machines
US2986909A (en) * 1957-10-29 1961-06-06 Liebrandt Driving mechanism for knitting tools of warp knitting machines
US2988906A (en) * 1959-04-14 1961-06-20 Hobourn F N F Ltd Flat warp knitting machine
US3205684A (en) * 1961-03-25 1965-09-14 Jean Gusken Maschinenfabrik Ei Device for producing radial movement of guide bars in cut plush warp knitting machines
US20210340698A1 (en) * 2018-09-10 2021-11-04 Haining Wellington New Material Co., Ltd. Mop cleaning cloth and method for manufacturing same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB797215A (en) * 1955-06-21 1958-06-25 F N F Machinery Mfg Company Lt Improvements relating to warp knitting machinery
DE1265335B (de) * 1958-02-06 1968-04-04 Walter H Scheibe Verfahren zur Herstellung von gemusterter durchbrochener Kettenwirkware
CN104047111B (zh) * 2014-06-30 2015-12-02 常州市第八纺织机械有限公司 前梳栉摇架凸轮

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE378305C (de) * 1923-07-10 Hemphill Co Schiebernadel
FR668185A (enrdf_load_stackoverflow) * 1927-12-10 1929-11-08
DE489214C (de) * 1928-01-03 1930-01-20 Aug Niekamp Ringexzenterantrieb fuer die Nadelbarren von Wirkmaschinen, insbesondere Kettenwirkmaschinen
DE603270C (de) * 1931-02-27 1934-09-28 James Morton Maschine zur Herstellung von Kettenwirkware oder Maschenstaebchen
CH198104A (de) * 1936-02-21 1938-06-15 F N F Limited Kettenwirkmaschine.
DE666087C (de) * 1936-02-21 1938-10-13 F N F Ltd Kettenwirkmaschine

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2700285A (en) * 1955-01-25 Bellini
US2562034A (en) * 1942-06-03 1951-07-24 Fnf Ltd Knitting machine needle motion
US2476344A (en) * 1945-10-15 1949-07-19 Vanity Fair Mills Inc Knitting machine
US2508209A (en) * 1945-10-15 1950-05-16 Vanity Fair Mills Inc Knitting machine and method
US2428405A (en) * 1945-12-18 1947-10-07 Vanity Fair Mills Inc Knitting machine
US2461583A (en) * 1946-12-30 1949-02-15 Vanity Fair Mills Inc Knitting machine
US2711092A (en) * 1952-07-05 1955-06-21 Peters Cora Lee Worthington Method of and machine for warp knitting
US2733583A (en) * 1952-08-05 1956-02-07 Knitting machine
US2714811A (en) * 1952-09-18 1955-08-09 Vanity Fair Mills Inc Knitting machine needle structure and operating means therefor
US2907192A (en) * 1955-01-25 1959-10-06 Textile Machine Works Sinker operating mechanism for knitting machines
US2959948A (en) * 1955-02-04 1960-11-15 Hobourn F N F Ltd Flat warp knitting machines
US2957326A (en) * 1957-02-26 1960-10-25 Hobourn F N F Ltd Warp knitting machines
US2986909A (en) * 1957-10-29 1961-06-06 Liebrandt Driving mechanism for knitting tools of warp knitting machines
US2984998A (en) * 1957-10-30 1961-05-23 Liebrandt Driving mechanism for warp knitting machines
US2988906A (en) * 1959-04-14 1961-06-20 Hobourn F N F Ltd Flat warp knitting machine
US3205684A (en) * 1961-03-25 1965-09-14 Jean Gusken Maschinenfabrik Ei Device for producing radial movement of guide bars in cut plush warp knitting machines
US20210340698A1 (en) * 2018-09-10 2021-11-04 Haining Wellington New Material Co., Ltd. Mop cleaning cloth and method for manufacturing same

Also Published As

Publication number Publication date
BE469889A (enrdf_load_stackoverflow) 1947-01-31
FR937829A (fr) 1948-08-27
GB524969A (en) 1940-08-19
DE975841C (de) 1962-10-18
GB525255A (en) 1940-08-23

Similar Documents

Publication Publication Date Title
US2292287A (en) Warp knitting machine
US2155146A (en) Knitting machinery
US2339153A (en) Warp knitting machine
US3303670A (en) Multi-slide guide-bar
US5680777A (en) Device for inserting alternately-interposed wefts on a crochet galloon machine for warp weaving, and article of manufacture thus obtained
US4034579A (en) Continuous production of fringed textile articles
US2022448A (en) Guide needle lapping machine
US2750772A (en) Knitting machine needle device
US3205684A (en) Device for producing radial movement of guide bars in cut plush warp knitting machines
US2871686A (en) Warp knitting machinery
US2476344A (en) Knitting machine
US2921452A (en) Knitting machines and operating mechanism therefor
US3464236A (en) Knitting machine employing compensating motion for knitting effect thread
US2451498A (en) Flat warp knitting machine
US2482811A (en) Motion for warp knitting machines
US3410113A (en) Knitting machine having a chopper bar controlling mechanism
US3350901A (en) Guide bar lapping mechanism for warp knitting machines
US3355911A (en) Warp-knitting machine
US2686409A (en) Drive for the knitting tools of warp knitting machines
US2480175A (en) Knitting machine
US2014530A (en) Thread feeding mechanism for warp knitting machines
US2451499A (en) Warp knitting machine
US2978887A (en) Warp knitting machinery
US2470803A (en) Knitting machine
US2680364A (en) Straight bar knitting machine