US2495872A - Circular knitting machine of the independent needle type - Google Patents

Circular knitting machine of the independent needle type Download PDF

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Publication number
US2495872A
US2495872A US788260A US78826047A US2495872A US 2495872 A US2495872 A US 2495872A US 788260 A US788260 A US 788260A US 78826047 A US78826047 A US 78826047A US 2495872 A US2495872 A US 2495872A
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Prior art keywords
cam
dial
cams
circular knitting
pinions
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Expired - Lifetime
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US788260A
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English (en)
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Stibbe Edward Victor
Smith Bert
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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
    • D04B15/32—Cam systems or assemblies for operating knitting instruments
    • D04B15/327—Cam systems or assemblies for operating knitting instruments for stitch-length regulation

Definitions

  • This invention relates to circular knitting machines of the independent needle type, and is applicable to multi-feed machines wherein there are adjustable cams in the cam systems for effecting knitting adjustments.
  • the invention is intended for application primarily to cam systems which are concerned with the control and operation of the needles and include circular series of adjustable came provided for the purpose of regulation of the length of loops or stitches, for example, to produce knitted fabric of a required quality, or/and as may be required according to the count of the yarn to be used, but the inventionis not necessarily limited in this respect as it may be applied to cam systems for producing movements of other loop forming instruments, or instruments which cooperate with the needles in. loop formation, such, for example, as loop forming sinkers or holdingdown sinkers or web holders, in respect. of which adjustment of cams is requiredfor purposes well knownintheart. Therefore the expression cam systems is used. in a generic sense.
  • cams comprising knocking-over cams and associatedretaining cams in a sixteen feed machine of the cylinder and dial type adapted to produce interlock fabric. Consequently separate adjustment of the cams in a complete circular series is a slow and laborious procedure since the, cams are. usually attached toscrews adapted. to be turned by a screw driver, or. other suitable hand tool, and a scale or gradnation is provided, in conjunction with an index, for each screw, to which the operator has to work.
  • the presentinvention comprises an improvement the object of which is to reduce the time and workrequiredfor cam adjustment to a minimum, as will be hereinafter described.
  • the invention comprises, in a multi-feed. circular knitting, machine, the combination with a cam system including anumber ofladj'ustable cams, asa'foresaid, of mechanism adapted forv effecting multiple, adjustments simultaneously,
  • Figure -1 is a vertical-sectional view of so much of the head of the said machine, showing more particularly the inner and outer dials and the associated dial: cam cap, as is necessary .to illustrate the application of the invention thereto,
  • Figure is an underside plan view-of a few of the adjoining dial camcap sections, showing adjustable knocking-over .cams and associated adjustable retaining cams of the inner and outer dial cam systems.
  • Figure 3 is-ageneral perspective View of one of thesaid dial camcap sections, as .viewed from theunderside. thereof, showing more clearly the mannerinwhich.therknocking-over cams andthe associated retaining cams of the twosystems are adjusted,
  • Figure 9 is a detail plan view of portions of the dials, with the door section of the dial cam cap removed to show the adjusting pinion in mesh with an annular indexing gear or toothed ring by means .of which and pinions on the adjustable cam. slides thelatter are geared together,
  • Figure 10 is aperspective View of the main adjusting pinion and a fragmentaryportion of the indexing gearor toothed ring
  • Figure 1-1 v is aplan view of a portion-of the said gear or ring
  • Figures-1 2 and 13 are two detail, part-sectional views showing alternative'forms of friction spring means for preventing the cam slide pinions from over-running.
  • the sections S. of the dial cam cap I are attached, by means of screws 2, to a central dial cap hub 3" by which the entire cap is rigidl secured to a fixed central column '(not shown).
  • the reference numeral '4 indicates the rotary dial carrier plate which is centrally bossed at 5 and recessed to receive an outer dial slotted to receive inserted trick wall elements such as I, and a radially tricked inner dial 8, the said two dials being adapted to receive two respectively difierent and independently operable sets of dial needles as is conventional practice in a cylinder and dial machine of the interlock type.
  • the periphery of the dial cam cap is recessed to receive a dial needle guard 9, and each of the sections S has attached thereto a feeder bracket iii. The l.
  • the dial cam cap I comprises eight of the adjoining sections S and also a smaller and removable door section S
  • An inverted plan view of a few of the said sections, including the door section S is shown in Figure 2.
  • the door section is secured to the hub 3 by a thumb screw II and is furnished with a milled knob [2 to facilitate its removal and insertion.
  • the rotary needle cylinder of the machine is indicated in dot-and-dash lines at I 3 in Figure l, the cylinder cam box being shown at [4 and one of the cam posts at l5.
  • Each section S of the dial cam cap I carries on its lower face a knocking-over cam !6, a companion guard cam 11 and a retaining cam l8 incorporated in the outer dial cam system for action on the butts of dial needles accommo dated in the outer dial 6, and a knocking-over cam IS, a guard cam and a retaining cam 2i incorporated in the inner dial cam system for similar action on the butts of dial needles in the inner dial 8.
  • the various cams just specified ar attached to longitudinally movable slides 22 which 3 are mounted for adjustment radially inwards and outwards within guide channels 23 cut in the underside of the sections S, and are furnished with radially disposed adjusting screws 24 to the inner ends of which are secured pinions 25 arranged in mesh with an annular indexing gear or toothed ring 25.
  • the undersides of the adjustable cam slides 22 are longitudinally channelled at 2'! to receive complementarily shaped ribs 28 formed on the cams accurately to locate the latter laterally with respect to the said slides.
  • certain of the fixed dial cams adjoining the radially adjustable knocking-over, guard and retaining cams may, where convenient, be
  • each ad justable cam slide 22 is formed with a lateral lug 29 which is tapped to receive the corresponding adjusting screw 24.
  • the leading end of each such screw, i. e. the end thereof remote from the relevant pinion 25, is arranged to make contact with a portion of the dial cam cap as clearly shown in Figures 2 and 3.
  • Each cam slide 22 is controlled by a compression spring 30 which, as shown in Figure l, is interposed between the back of an upstanding projection 3
  • the adjustin screws and pinions on one only of the dial cam cap sections S have been shown in Figure 2.
  • the adjustable cam slides 22 will be supported and held up within the guid channels 23 by fixed dial cams attached to the underside of the dial cam cap: but in cases where there are insufficient or even no fixed cams underlying a cam slide, then that slide may be retained in its guide channel 23 by a retaining screw, such as 33 (see the right-hand side of Figure 1) which is screwed into a tapped hole formed to receive it in the upstanding projection 31 on the top of th slide.
  • the limit of the outward movements of the adjustable cam slides is determined by the sectional dial needle guard 9.
  • a wheel or knob may be adopted, this being milled or knurled for engagement directly by hand, or formed with holes to receive a tommy bar.
  • the nut 38 or other single member is normally covered by the removable door section S of the dial cam cap which is cut away at 39 (see Figures 2 and 8) to clear it.
  • the pinion 31 and the associated nut 38 are mounted for rotation upon a plain portion of a screw which is screwed into the hub 3 as shown in Fi ure 8.
  • a relevant portion of the indexing gear or toothed ring 25 has formed therein an endmilled recess 40, the bottom of which is graduated and stamped or otherwise marked with numbers accurately disposed in relation to the roots of the teeth 26
  • these numbers are used, in relation to a zero mark or index 4
  • This part is recessed, as shown at 42 in Figures 9 and 10, to reveal a few, e. g. three, only of the numbers. Numbers to the right of the zero mark are used to give an on adjustment Whilst those to the left of the said mark give an off adjustment, it bein understood that the numbers bear a relation to and indicate predetermined degrees of adjustment of the cams.
  • the thumb screw H is first taken out, to permit removal of the door section S by means of the milled knob l2, whereupon the main adjusting pinion 31 is turned by the application of a spanner to the associated nut 38 so as to eflect a answerer turning' movement' tothe desired extent-wattle indexing gear or toothed ring-2f6 .lo'yiwhicli and thie i pinions-25 the"-a;d'justing-screws 24 are geared t'ogetl'feraspreviously explaiiredfi Toi-prevent thwpihi-nonsZS frommVer-run'riing or tending to move When not required to do so;
  • friction spring 'or equivalent*means are-arranged posedpi-nions 25E
  • the pinions of each successive pairthroughout" the circular-series are similarly controlled'xbyga'; doublet-ended blade” spring? alternative and more.
  • simple: form of friction spring is shown atddinFigurelB.
  • each loiltheaforementioned guard cams is adjustable radially in company with'its associated:knockingeover cam;
  • each guard cam is. rigidly attachedto :thBvSildBcZZ ta-which the corresponding knocking-over cam is attached, so that at all times and even upon-adjustment of the slide the two cams-will bear the 'same relatiorr'to each other; This isan' importantfeature'andin contradistinction to customary'practice in which',
  • An embodiment of the invention similar to that described may alternatively be applied to the cylinder cam system, or both to the dial cam system and the cylinder cam system of a machine of the cylinder and dial type adapted to produce interlock fabric.
  • an externally toothed ring may be located in a vertical recess in the inner face of the cam box or shell, and the adjusting screws may be mounted vertically in the box or shell with their pinions disposed horizontally in engagement with the external teeth of the ring, for vertical adjustment of the cams.
  • an index for use in conjunction with the teeth or graduations on the gear or the ring, as already described is provided adjacent to the master adjusting unit, or an independent scale with an index may be adopted, to facilitate adjustment of the cams to the required degree.
  • the invention is advantageous in that the possibility of inequalities attendant upon individual adjustment of cams and corresponding variations in the quality of the knitted fabric is practically eliminated.
  • the collective adj ustment of the se lectedcams may be errected "automatically; at-iaz required: time; operationfrom a convene lent power driven member of: the machine, e; g. on the control shaft, or" from the.
  • Wh'ilatheinvention is applicable: primarily: tomulti fed' 'circular knitting machines of the cyl inde'r and dial typefor producinginterlock fab ric; and employing' numerous adjustable cams in the knitting- 0am" systems, it" may be applied to machines ofth'e same 'type for producing ordinary rib fabric; to multi-feed circular plain k nitting machines, and to multi feed ma'chines of-the 'double-axially pposedneedle cylinder type; for-"example; those equipped with'superimposed needle” cylinders and double end'ed' needles operatedthrough the" medium of sliders; all of "which ma”-- chines are adapted 'for producing body fabric: for" manufacture subsequently into articles of clothing, or for producing body garments or garment lengths.
  • the invention is also capable of application to smaller multi-feed machines for producing stockings and like articles, wherein cam adjustment to give definite, or variations in, stitch length may be a
  • cam systems act directly on the needles and co-operative elements, if pro vided, Whereas in others the cam systems act through the medium of jacks, to produce the knitting movements, and that the invention accordingly is applicable to both cases.
  • a series of independent loop forming instruments in combina tion, a series of independent loop forming instruments, a multiplicity of angularly spaced feeds, a cam system including at least one adjustable cam at each of said feeds for effecting movements of the said loop forming instruments, members to which said cams are attached, screws for adjusting the said members, pinions on the screws, a common annular indeXing gear with which the said pinions are arranged in mesh, means for turning the said indexing gear and thereby effecting simultaneous adjustment of the aforesaid cams, and an index for use in conjunction with the teeth of the indexing gear to facilitate adjustment of the cams to the required degree.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US788260A 1946-12-02 1947-11-26 Circular knitting machine of the independent needle type Expired - Lifetime US2495872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35626/46A GB642374A (en) 1946-12-02 1946-12-02 Improvements in or relating to circular knitting machines of the independent needle type

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US2495872A true US2495872A (en) 1950-01-31

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US788260A Expired - Lifetime US2495872A (en) 1946-12-02 1947-11-26 Circular knitting machine of the independent needle type

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US (1) US2495872A (enrdf_load_stackoverflow)
FR (1) FR956111A (enrdf_load_stackoverflow)
GB (1) GB642374A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756574A (en) * 1952-02-15 1956-07-31 Mellor Bromley & Co Ltd Cam system of knitting machines
US2775107A (en) * 1952-02-18 1956-12-25 Mellor Bromley & Co Ltd Circular rib knitting machine
US3959994A (en) * 1974-01-07 1976-06-01 Nuova San Giorgio S.P.A. Circular knitting machine cam arrangement
US4331007A (en) * 1977-05-18 1982-05-25 Giovanni Marchisio & C. S.A.S. Circular knitting machine with a device for adjusting the stroke of the cylinder needles
US4996853A (en) * 1988-06-30 1991-03-05 Mec-Mor S.R.L. Knitting machine with a device for adjusting the stitch density and for offsetting the stitch cam with respect to adjacent knitting cams
USD954113S1 (en) * 2019-06-12 2022-06-07 Santoni S.P.A. Textile machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218260U (enrdf_load_stackoverflow) * 1975-07-25 1977-02-09
IT1049112B (it) * 1975-10-06 1981-01-20 Matec Spa Perfezionamento nel gruppo delle camme di discesa operanti l abbassamento degli aghi.nelle macchine da maglieria ed in particolare nelle circolari da calze
GB2299346A (en) * 1995-03-28 1996-10-02 Monk Dubied Limited Multifeed circular knitting machine
CN115161864B (zh) * 2022-06-22 2023-12-22 绍兴宽裕机械股份有限公司 一种单面小圆机针筒及加工工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416488A (en) * 1889-12-03 Machines
US864496A (en) * 1903-05-29 1907-08-27 Robert w scott Circular-knitting machine.
US1158072A (en) * 1914-04-03 1915-10-26 Henry W Niermeyer Rib-knitting machine.
US2043852A (en) * 1934-09-20 1936-06-09 Wildt & Co Ltd Knitting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US416488A (en) * 1889-12-03 Machines
US864496A (en) * 1903-05-29 1907-08-27 Robert w scott Circular-knitting machine.
US1158072A (en) * 1914-04-03 1915-10-26 Henry W Niermeyer Rib-knitting machine.
US2043852A (en) * 1934-09-20 1936-06-09 Wildt & Co Ltd Knitting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756574A (en) * 1952-02-15 1956-07-31 Mellor Bromley & Co Ltd Cam system of knitting machines
US2775107A (en) * 1952-02-18 1956-12-25 Mellor Bromley & Co Ltd Circular rib knitting machine
US3959994A (en) * 1974-01-07 1976-06-01 Nuova San Giorgio S.P.A. Circular knitting machine cam arrangement
US4331007A (en) * 1977-05-18 1982-05-25 Giovanni Marchisio & C. S.A.S. Circular knitting machine with a device for adjusting the stroke of the cylinder needles
US4996853A (en) * 1988-06-30 1991-03-05 Mec-Mor S.R.L. Knitting machine with a device for adjusting the stitch density and for offsetting the stitch cam with respect to adjacent knitting cams
USD954113S1 (en) * 2019-06-12 2022-06-07 Santoni S.P.A. Textile machine

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Publication number Publication date
FR956111A (enrdf_load_stackoverflow) 1950-01-26
GB642374A (en) 1950-08-30

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