US3494310A - Process and device for casting-on of weft and warp-knit goods on needle plates - Google Patents

Process and device for casting-on of weft and warp-knit goods on needle plates Download PDF

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Publication number
US3494310A
US3494310A US701260A US3494310DA US3494310A US 3494310 A US3494310 A US 3494310A US 701260 A US701260 A US 701260A US 3494310D A US3494310D A US 3494310DA US 3494310 A US3494310 A US 3494310A
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United States
Prior art keywords
goods
casting
needles
needle
warp
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Expired - Lifetime
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US701260A
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English (en)
Inventor
Eberhard Merkle
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WILHELM BLEYLE KG
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WILHELM BLEYLE KG
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B7/00—Linking machines, e.g. for joining knitted fabrics

Definitions

  • Casting-on devices have also been proposed that are intended to act on the goods along side or between the needles in a stroke action synchronized step-by-step with the rotation of the annular plate. Such proposals, however, have not generally assumed any practical importance.
  • the problem is solved in that the action of the casting-on device upon the goods, slipped on the tips of the needles of the plate manually,
  • the construction of the casting-on device be such that a stirrup, two prongs of which straddle the needle plate, with skid-like contact contour, that is, tapered in an arcuate manner on its surface contacting the goods and optionally rising in the direction of introduction of the goods, is connected to an oscillating magnet generating the vibration.
  • the prongs of the stirrup oscillate substantially parallel to the axes of the needles, immediately to either side of the needles, upon the goods to be thrust down with a vibration comparable to a gentle hammering.
  • a further elaboration of the invention consists of the casting-on means being connected to the rotary armature of an oscillating magnet generating the vibration.
  • the contact contour has at least two convexities and the one first engaging the goods to be pushed down protrudes a. lesser amount than the following convexities.
  • the construction of the casting-on device be such that to either side of the needle plate, eccentrics having at least one maximum point are mounted perpendicular to the plane of the plate, on a driven shaft, of a high speed rotary drive source.
  • the protruding maximum points of the eccentrics exert vibration impacts of high frequency directly on the goods to be thrust down.
  • each stitch slipped on aneedle of the plate is struck by a large number of very rapid vibration impacts.
  • the pressure thus exerted on the casting-on device itself may be comparatively slight in comparison to known methods, so that the shape of the needle plate is not impaired and the castingon can be done easily and continuously with considerable speed.
  • An essential advantage of the invention moreover is that the hands are thereby freed for slipping the goods on the tips of the needles, and that this operation is not interrupted by that of thrusting down the goods which involves a reverse action and requires exertion and great skill.
  • FIGURE 1 is a cross-sectional view of the cylinder of a circular looping machine with a casting-on device according to the invention in position;
  • FIGURE 2 is another view thereof, viewed in the direction of arrow A of FIGURE 1;
  • FIGURE 3 is a cross-sectional view of an alternative embodiment of a casting-on device according to the invention with an edge roller associated therewith;
  • FIGURE 4 is another view thereof, in the direction of arrow A of FIGURE 3;
  • FIGURE 5 is a top view thereof
  • FIGURE 6 is a sectional view of a further embodiment of a casting-on device in accordance with the invention.
  • FIGURE 7 is another view thereof, viewed in the direction of arrow A of FIGURE 6.
  • rotary motion of the top of the machine is not produced as has been past practice by pushing it along with the hands or by turning the substructure with the feet. This is accomplished by a power drive which the operator can control, for example, by means of a knee lever, thus avoiding any lost motion in the looping operation.
  • the oscillating magnet 1 is mounted by an arm 2 on a circular looping machine, optionally circularly adjustable about the latter and capable of being swung clear.
  • the vibration generated by oscillating magnet 1 is transmitted by way of a bar 3 to the two prongs of a stirrup 4 of U-shaped cross section which extends with one prong on each side of the needle-cylinder 5 to act upon the goods 6 slipped on the latter.
  • a plurality of needles are straddled at any one time.
  • the prongs of stirrup 4 have a skid-like contact contour 7, this is tapered in an arcuate manner on its surface contacting the goods, rising in the direction of motion of cylinder 5, with the anterior end of the contour engaging with the goods imposed on the tips of the needles, and the most remote protuberance of the contour corresponding to the desired depth of thrusting the goods 6 down on the stems of the needles.
  • the mode of operation is as follows. The goods are slipped on the tips of the needles by hand and drawn by the motion of the cylinder between the prongs of stirrup 4. The stirrup vibration generated by oscillating magnet 1 then thrusts it on the stems of the needles without further manual assistance. It may only be necessary to adjust the depth manually.
  • the vibration can be transmitted from oscillating magnet 1 to stirrup 4 by interposition of some transmission means, for example, the hydraulic or pneumatic type, depending on the design of the machine.
  • the prongs of stirrup 4 have two convexities 7a and 7b.
  • Convexity 7a anterior in the direction of motion of cylinder 5, protrudes to a lesser depth than convexity 7b arranged at the posterior end of contract contour 7.
  • Stirrup 4 is fixedly mounted on extended shaft 8 of the rotary armature of an oscillating magnet. Shaft 8 rests in tube 9, fixedly attached to the housing of the oscillating magnet.
  • Oscillating magnet 1 is attached to swinging arm 2 of the looping machine. The rotary oscillation of stirrup 4 on shaft 8 first thrusts the goods 6 on the tips of the needles of cylinder 5 through the deflection of the anterior convexity 7a.
  • the casting-on operation is completed by the wider oscillation of the posterior convexity.
  • more convexities may be provided on contact contour 7, those farther back in the direction of motion of the cylinder protruding ?arther than the preceding.
  • the multi-stage casting-on operation that can be per- ?ormed with this embodiment has the advantage that the goods 6 are thrust down on the needles at a rather flat angle. They are thus protected from distortion by avoiding my excess stretching of the loops.
  • FIGURES 6 and 7 represent a further elaboration of he invention.
  • the vibration is generated by an :ccentric and rapid rotation, acting directly on the goods.
  • the eccentric 11, 12 driven by an electric motor or similar .ource of power, and having its plane of rotation parallel o the needle plate, is so arranged as to act directly on the goods to be thrust down.
  • the eccentric according to the nvention consists preferably of an eccentric disc 11, -12 tcting on one side or of two acting on both sides next to he needle plate.
  • the maximum xoints of the eccentrics will bear down along side the needles to the desired depth to which the goods are to be pushed, while a minimum point lies substantially on level with the points of the needles or above, so that the goods laid upon them can readily be introduced underneath the eccentric.
  • the eccentrics may be in the form of a simple eccentric, or, to generate higher frequencies of oscillation, in the form of cams with more than one maximum point.
  • the eccentrics are mounted directly on the drive shaft of a preferably noiseless electric motor or equivalent source of power, preferably capable of being swung clear.
  • eccentrics 11 and 12 are directly mounted eccentrically on driven shaft 13 of electric motor 14. Their maximum points 15 act on either side of the needles of cylinder 5 on the goods 6 to be cast-on, while the minimum point 1 6 of the eccentrics 11 and 12 are, when facing the goods 6 to be cast-on, about on level with the tips of the needles of cylinder 5, enabling the goods 6 to be introduced.
  • Electric motor '14 will swing or rotate on pivot 17 and is arranged on an arm 2 attached to the column of the circular looping machine. The high frequency vibration generated by the rapid rotation of eccentrics 11 and 12 thrusts the goods onto the stems of the needles to the depth determined by the maximum points 15 of eccentrics 11 and 12.
  • eccentrics 11 and 12 may be in the form of cams with more than one maximum point.
  • the casting-on device according to the invention may be equipped with suitable interchangeable indicating and control means, for example guide rails or edge roller 10 (FIGURES 3, 4, and 5) in front of stirrup 4 or eccentrics 11 and 12 automatically laying down the goods, or facilitating this operation as the cylinder moves along under the device.
  • suitable interchangeable indicating and control means for example guide rails or edge roller 10 (FIGURES 3, 4, and 5) in front of stirrup 4 or eccentrics 11 and 12 automatically laying down the goods, or facilitating this operation as the cylinder moves along under the device.
  • the arrangement of the edge roller 10' is such that more than one thickness of goods can be cast-on at once, if desired.
  • the field of operation can be illuminated by a source of light running parallel with the casting-on device according to the invention and optically magnified by means carried along a similar manner.
  • Either accessory may, if desired, be attached to arm 2 or to tube 9.
  • markings may be provided on a stationary part of the casting-on device for exact identification of the needle points.
  • the device according to the invention is not confined to cylindrical and flat looping machines, but may be applied with equal advantages to the transfer frames of fiat-warp knitting machines. For special applications, it may also be expedient to employ the device according to the invention as a hand tool with no suspension.
  • Casting-0n apparatus adapted for the casting on of weft and warp-knit goods on a knit-goods machine having a needle plate with a plurality of aligned needles on at least one side of the needle plate, said casting-on apparatus comprising: vibrating means mounted on a supporting structure, and casting-on means connected to said vibrating means and adapted to be positioned adjacent the needle plate of a knit-goods machine so that said vibrating means will cause said casting-on means to vibrate in a diretcion substantially parallel to the axes of the needles on the needle plate and will thrust the goods down on the needle stems on at least one side of the needle plate.
  • the casting-on means includes a stirrup having two prongs with a tapered arcuate configuration on thesurface thereof which contacts the goods, said stirrup straddling the needle plate, and said stirrup and said vibrating means including an oscillating magnet connected thereto, the tapered arcuate contact surface rising in the direction of the end of said stirrup where said goods are introduced to be passed thereunder, and a transmission means on said vibrating means to transmit the vibrations generated by said magnet to said stirrup.
  • the casting-on means includes a stirrup having two prongs of a contour having at least two convexities on the surface thereof contacting the goods, the convexity first engaging the goods to be thrust down protruding less than the following convexities, and said stirrup being arranged on the rotary armature of an oscillating magnet of said vibrating means generating the vibration thereof.
  • the casting-on means includes at least one eccentric having at least one maximum point and being arranged on at least one side of the needle plate, said at least one eccentric being mounted on a driven shaft perpendicular to the plane of the plate of a high-speed rotary drive source.
  • control means are associated with said casting-on means for laying on the goods before being thrust down on the needle plate, the control means having an edge roller, and markings are provided on a stationary part of said casting-on device for exact indication of the needle points.
  • a process for casting-on of weft and warp-knit goods on a needle plate of a knit-goods machine by use of a casting-on means connected to a vibrating means comprising: positioning said casting-on means adjacent to and on at least one side of said needle plate, and vibrating said casting-on means by activating said vibrating means so that said casting-on means vibrates substantially parallel to the axes of the needles on said needle plate so that the goods are thrust down on the stems of the needles by said casting-on means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
US701260A 1967-02-08 1968-01-29 Process and device for casting-on of weft and warp-knit goods on needle plates Expired - Lifetime US3494310A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEB0091082 1967-02-08
DEB0092942 1967-06-10
DEB0095985 1967-12-22

Publications (1)

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US3494310A true US3494310A (en) 1970-02-10

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US701260A Expired - Lifetime US3494310A (en) 1967-02-08 1968-01-29 Process and device for casting-on of weft and warp-knit goods on needle plates

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US (1) US3494310A (de)
AT (1) AT315620B (de)
CH (1) CH503145A (de)
FR (1) FR1552710A (de)
GB (1) GB1141786A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732832A (en) * 1970-02-17 1973-05-15 Protasoni Calzificio Attaching binding strips to knitwear on linking machines
US3738291A (en) * 1970-01-17 1973-06-12 R Spagnuolo Device and method for linking tubular borders to a fabric edge
US5058241A (en) * 1989-05-31 1991-10-22 Caipo Engineering System S.R.L. Method and apparatus for combining fibres formed into slivers for supply to textile machinery
CN110565273A (zh) * 2019-09-25 2019-12-13 北京卓文时尚纺织股份有限公司 一种羊毛衫用缝盘机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1672021A (en) * 1927-07-21 1928-06-05 Abraham L Stoumen Machine for attaching reenforcing strips to knitted fabrics
US2889789A (en) * 1955-08-29 1959-06-09 Saul O Sidore Looping machine attachment
US2943585A (en) * 1957-01-18 1960-07-05 George B Crocker Loop guide for dial looper
US3340834A (en) * 1963-04-09 1967-09-12 Rosso Giuseppe Method of and apparatus for knitting and linking articles of wear

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1672021A (en) * 1927-07-21 1928-06-05 Abraham L Stoumen Machine for attaching reenforcing strips to knitted fabrics
US2889789A (en) * 1955-08-29 1959-06-09 Saul O Sidore Looping machine attachment
US2943585A (en) * 1957-01-18 1960-07-05 George B Crocker Loop guide for dial looper
US3340834A (en) * 1963-04-09 1967-09-12 Rosso Giuseppe Method of and apparatus for knitting and linking articles of wear

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3738291A (en) * 1970-01-17 1973-06-12 R Spagnuolo Device and method for linking tubular borders to a fabric edge
US3732832A (en) * 1970-02-17 1973-05-15 Protasoni Calzificio Attaching binding strips to knitwear on linking machines
USRE29492E (en) * 1970-02-17 1977-12-13 Rosso Pietro & C. S.P.A. Fixing binding strips to knitwear on linking machines
US5058241A (en) * 1989-05-31 1991-10-22 Caipo Engineering System S.R.L. Method and apparatus for combining fibres formed into slivers for supply to textile machinery
CN110565273A (zh) * 2019-09-25 2019-12-13 北京卓文时尚纺织股份有限公司 一种羊毛衫用缝盘机
CN110565273B (zh) * 2019-09-25 2021-07-27 北京卓文时尚纺织股份有限公司 一种羊毛衫用缝盘机

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Publication number Publication date
GB1141786A (en) 1969-01-29
FR1552710A (de) 1969-01-03
CH503145A (de) 1971-02-15
AT315620B (de) 1974-06-10

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