US2016870A - Knitting machine - Google Patents

Knitting machine Download PDF

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Publication number
US2016870A
US2016870A US612688A US61268832A US2016870A US 2016870 A US2016870 A US 2016870A US 612688 A US612688 A US 612688A US 61268832 A US61268832 A US 61268832A US 2016870 A US2016870 A US 2016870A
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United States
Prior art keywords
knitting
core
cam
speed
loops
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
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US612688A
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English (en)
Inventor
Meiwald Franz
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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
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/42—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration
    • D04B9/44—Circular knitting machines with independently-movable needles specially adapted for producing goods of particular configuration elongated tubular articles of small diameter, e.g. coverings for cables
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/225—Elongated tubular articles of small diameter, e.g. coverings or reinforcements for cables or hoses
    • 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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • 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
    • D04B15/88—Take-up or draw-off devices for knitting products
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B9/00—Circular knitting machines with independently-movable needles
    • D04B9/02—Circular knitting machines with independently-movable needles with one set of needles
    • D04B9/025—Circular knitting machines with independently-movable needles with one set of needles with stitch-length regulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Definitions

  • My invention relates to improvements in devices for producing tubular coverings such as are used for instance for electric conductors or other strand elements.
  • the loops then form, between adjacent Wale rows, the cords for a cylindrical surface formed by the spiral rows of wales, and these loops therefore lie lower than the wale rows, so that the latter become undesirably prominent.
  • variable functions which ijustment of, the speed ratio between the core readily may upset'the desired effect of vsuch fixed l (o1. fia-s) feed andthe production of the knitted fabric which may be readily varied at will to suit the prevailing knitting conditions and by which any desired clcse or loose fitting of the knitted covering to the core can be attained.
  • the particular speed ratio control atrangement between the core speed and the knitting speed shown may be applied without change in principle to the ordinary single thread knitting of acovering around a core in which case 15 it is likewise important to maintain the proper speed ratio.
  • Figure-1 discloses one of the designs which represents, according to the invention one of the 20 different possible bonds of loops, knitted around a core.
  • Figure 2 shows diagrammatically the knitting devices with the needle cylinder andthe corresponding cam rings for producing covering for a core according to Figure 1.
  • Figure 3 rep- 25 resents diagrammatically the knitting machine, with the knitting head cooperating with the device over which the objectA passes which is to be surrounded with a tubular covering.
  • Figure 4 represents an end elevation of the shea've I3 of 30 Figure 3.
  • Figure 5 represents a view Ipartly in longitudinal section and in larger scale, of the type of knitting head shown'in Figs. 2 and 3 provided with two cam rings.
  • Figure 46 is a top view of one han of lthe knitting head, Figure 5, 35
  • the core advances the length of a. loop at each revolution of the needle cylinder or cam ring.
  • the core advances for each rotation ot the needle cylinder as many times the length oi' a loop unit as there are threads distributed on the periphery o! the core.
  • FIG 3 which shows the' core speed control device ahead ot the knitting head.
  • I2 denotes the central core to be provided with a tubular covering.
  • 'I'he core to be covered passes over a sheave Il and through the knitting-device Il '33, is provided with a fine thread device is preferably disposedA several timos around sheave I3 to secure a better 5 gril@D
  • the knittinghead is shown partly in section in Figure 5.
  • 25 denotes the needle cylinder
  • 26 the knitting needles
  • 2l the upper and
  • 2B the lower cano ring.
  • the position of both cam rings is 10 adjustable with the aid of the shoulder screws 2E, tif 'taking into the upper earn ring 21, and 305, 3i taking into the lower cam ring 2E through Vertical slots on opposite sides of the casing 34.
  • This provides for the rough verticali adjustment l5 of the com. rings.
  • Circumierential adjustment of the rings is possible by the saine means, for instance for cam 2l, by removing shoulder screws 25 and 3l suilioiently to disengage the cam ring, whereupon the latter may be turned 20 and the screws' 2Q and 3l be reinserted and. tightened/la With, the number of diametrica-lly opposed screw holes/,in the cani rings spaced suitable peripheral distances apart, the cam rings may thus be conveniently periphernlly adjusted. 25
  • the needle cylinder is rotatably mounted in cani ringe 2 and 28 and vertically supported on its hcllowdriving shaft 32 with which it is removably coupled. by means ci a square end.i 32.
  • a coil spring 25u is provided on the lower, slender portion of the cylinder, which spring is in engagement at its lower end with the lower cylinder 35 portion., and, abuts at its upper end through a ball bearing 46 against a shoulder provided in the interior of the cam ring housing 34'.
  • This 40 latter shaft is journalled in a stud 49 which forms part Vof the machine frame (not shown) and which thus rotatably supports the entire knitting head.
  • Thecasing 34' which contains the cam rings 45 has a suitable drive connection with the sleeve 33 of a cam ring driving gear 33, the latter being also rotatably supported on the previously mentioned machine frame stud 49 by means of ball bearing vI8, so that it can rotate independently 5o of the needle cylinder.
  • cam ring gear 33 is driven by the same bevel gear, Il which operates shaft 32 of the needle cylinder, but at the desired speed ratio with respect to the shaft 32, produced by gear train 50 in Fig. 3.
  • a bayonet joint ring 35 within which adjustment sleeve 34 can be turned for adjustment in the manner shown in Fig. 5.
  • This ring 35 is provided with two diametrically oppositely disposed circular slots 36, of which one is clearly shown in Fig. 6, and in each of which one of the thumb screws 3l is located. These screws are threaded into a ring 38 which is socketed on and suitably attached to sleeve 33 of gear 33.
  • This knitting head and the core feeding mechanism as described and shown may serve for any suitable form of knitting, for instance such as is shown in Figures 1 and 2, the two separate cam rings 2l and 28 representing in particular 'the cam arrangement of Figure 2, except for the separation of the rings in Figure 5, which as appears from the foregoing description merely facilitates the( relative positioning of the cams.
  • the cam system operates as shown in and described with respect to Figure 2, and produces the knitting shown in Figure l.
  • a further suitable design of thegnachine consists in designing the cam ring for the operation of the knitting needles with diie'rent angles of the needle advancing and retracting groove portions With respect to the central axis of the system.
  • the cam groove is so designed that the angle of inclination of the needle retracting groove branch to the axis of rotation of the knitting device is smaller than the inclination of the angle of the needle advancing groove branch to the same axis.
  • This design of the cam groove has the advantage that more cam elements may be accommodated within a given peripheral .length of the cam cylinder than ⁇ has hitherto been possible, so that the number cit/'operations for a needle is increased accordingly, which renders the system most eicient; If one is, however, not bound to the diameter of the cam ring cylinder, its diameter, while maintaining the output, may be .decreased in accordance with the steepness of the angle of the needle retracting groove branch. In this way, a decrease of the weight of the knitting head is brought about which effects on the one hand a saving in material, so that lighter supporting members may be provided, and on the other hand advantages are attained in operation, Vowing to the reduced weight of the gyrating masses.
  • the invention is applicable to knitting machines of every description, for instance to machines with two or more systems of cam grooves.
  • the invention is equally 5 applicable to other textile machines with cam groove controls.
  • FIG. v'7 shows the development of a cam 10 groove in the plane of the drawings.y
  • the cam groove 42 has four needle advancing paths and ⁇ four idling paths.
  • the cam ring moves in the direction of the arrow 43.
  • the ⁇ angle of the needle advancing groove branch to the horizon- 15 tal line amounts to 42 and the angle of the needle retracting groove branch amounts to 52.
  • the needles will, consequently, advance slowly and retract rapidly.
  • Central cores such as electric conductors, cables 20 y with or without lead sheaths, flexible cores for telephones, rubber tube insulated co-nductors, cab-tire metal sheathed wires may be provided with a tubular covering on the above-described knitting machine: f f
  • the knitted tubular covering applied to the insulation of the -conductor may be according to the invention improved by calendering and treating it with conventional dressing agents such as gelatine, solutions' of starch, sugar or the like, by 30 machines not shown here, as soon as it leaves the knitting machine.
  • the knitted tubular covering is thus an excellent substitute for a braided tubular coveringl with dressing, since in the present case the dressing agent penetrates the com- 35 for operating said needles, means positively 45 geared to said knitting head for moving said core through the knitting head in xed speed relation to the operating speed of the head, and means for adjusting in axial direction the distance between said cam ring and the top rim of said 50 needle cylinder for adjusting the eifective length of the looping stroke of. said needles to correlate the speed at which the knitted covering is produced to the core speed.
  • a knitting head including a needle cylinder having needles and axially spaced cam rings surrounding said cylinderfor operating said needles, means positively geared to said knitting head for moving said core through the knitting 60 head in fixed speed relation to the operating speed ofthe head, and means for adjusting in axial direction the distance between said cam rings and the top rim of said needle cylinder, for adjusting the effective length of the looping 65 stroke of said needles to correlate the speed at which the knitted covering is produced to the ing said core through the needle cylinder in nxed 75l ⁇ ting head, and means for adjusting said cam rings in axial direction with relation to one another and to the top rini oi said needle cylinder, said means comprising a cam ring carrier supported within said base and set screws in said rings adapted to be tightened against said carrier for coarsely adjusting said rings :in axial direc-- tion, and a sleeve finely threaded onto said carrier for supporting said carrier
  • a knitting head including a base, a. needle cylinder disposed within said base and having needles and axially spaced cam rings surrounding said cylinder for operating said needles, means positively geared to saidf knitting head for feeding said core through the needle cylinder in ilxed speed relation to the operating speed of the knittingA head, and means for adjusting said cam rings in axial direction 4with relation to one an- ⁇ other and to the top rim of said needle cylinder, said means comprising a cam ring carrier supported within said base and set rscrews in said i rings adapted to be tightened against said carrier'v for coarsely adjusting said rings in axial direcno1 6,870 l speed relation to the operating speed of the knittion, and a sleeve finely threaded onto said carrier for supporting said carrier on said hase, and for axially displacing said carrier with rel-ation to the top rim fol said needle cylinder, to coarsely and iinely
  • a knitting head consisting of a needle cylinder having needles and cam rings surrounding said cylinder foroperating said needles, a housing :for said cam rings, a supporting stud 'for rotatably supporting said needle cylinder and 15 said housing and a spring between said cylinder .and said housing for maintaining the desired relation between said two elements in axial direction, means positively geared to said needle cylinder and to said cam ring housing for moving said 20 core through the knitting head to correlate the core ieed to the operating speed of 'the head, and means for coarsely and nely adjusting said cam rings in axial direction with respect to the top rim of said needle cylinder for setting the efl'ec- 25v tive length of the looping stroke of the needles, topermlt-adjustment of the knitting speed of the knitting head with relation to the core speed, and means for locking said axial cam ring adjustments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US612688A 1931-08-07 1932-05-21 Knitting machine Expired - Lifetime US2016870A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT2016870X 1931-08-07

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US2016870A true US2016870A (en) 1935-10-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US612688A Expired - Lifetime US2016870A (en) 1931-08-07 1932-05-21 Knitting machine

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US (1) US2016870A (fr)
FR (1) FR736507A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201954A (en) * 1962-02-19 1965-08-24 Singer Co Method and apparatus for reinforcing flexible hose
US3257828A (en) * 1963-10-01 1966-06-28 Singer Co Multi-feed knitting machine for reinforcing flexible hose or the like
US3421344A (en) * 1965-12-22 1969-01-14 North American Rockwell High-speed knitting machine
US3901051A (en) * 1973-01-20 1975-08-26 Fletcher Brothers Engineers Li Cord knitting device
US4532781A (en) * 1981-03-03 1985-08-06 Memminger Gmbh Knitting machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201954A (en) * 1962-02-19 1965-08-24 Singer Co Method and apparatus for reinforcing flexible hose
US3257828A (en) * 1963-10-01 1966-06-28 Singer Co Multi-feed knitting machine for reinforcing flexible hose or the like
US3421344A (en) * 1965-12-22 1969-01-14 North American Rockwell High-speed knitting machine
US3901051A (en) * 1973-01-20 1975-08-26 Fletcher Brothers Engineers Li Cord knitting device
US4532781A (en) * 1981-03-03 1985-08-06 Memminger Gmbh Knitting machine

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Publication number Publication date
FR736507A (fr) 1932-11-24

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