US2580603A - Straight bar knitting machine - Google Patents

Straight bar knitting machine Download PDF

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Publication number
US2580603A
US2580603A US110060A US11006049A US2580603A US 2580603 A US2580603 A US 2580603A US 110060 A US110060 A US 110060A US 11006049 A US11006049 A US 11006049A US 2580603 A US2580603 A US 2580603A
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United States
Prior art keywords
yarn
bars
operating
carrier
driving
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
US110060A
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English (en)
Inventor
Saunders Alfred Percy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wildt and Co Ltd
Original Assignee
Wildt and Co 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 Wildt and Co Ltd filed Critical Wildt and Co Ltd
Application granted granted Critical
Publication of US2580603A publication Critical patent/US2580603A/en
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D37/00—Circular looms
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/64—Thread guides for straight-bar knitting machines

Definitions

  • This invention relates to straight bar knitting machines. and has reference particularly to the mechanism incorporated in such a machine for selecting and operating the. yarn carriers when producing shaped garments .or parts thereof, or articles such as fully fashioned stocking blanks.
  • the invention has ,reference particularly to yarn carrier driving ⁇ mechanism of 'the kind wherein the yarn carriers are traversible to variable extents, determined by stops, by reciprocable driving means having a constant stroke.
  • the primary object of the present invention is to provide an improved, compact and efficient yarn carrier driving mechanism of the kind referred to' designed to enable the overall width of the machine to be reduced to a minimum, and to maintain the required variations in the extents of travel of the yarn carriers Without engendering unnecessary friction against the driving mechanism at the appropriate times.
  • a particular aim is the provision, in a-straight bar knitting machine, of a yarn carrier driving arrangement which is located remote from, and hence quite clear of, the knitting head of the machine, thereby enabling the spaceadjoining 14 claims. (c1. ets- 126) the head more easily to accommodate -and render accessible other mechanisms. r
  • the yarn carriers are traversible through the medium of reciprocable operating members which, together ⁇ with the housing in which they reciprocate, are
  • the construction ⁇ and arrangement being such that Wheneverl an operating member and its housing are selected Aand brought into the range of, and the operating member is acted upon by, the driving means, traverse oi the corresponding yarn carrier is effected until arrested by the appropriate stop at which time the said operating member is automatically disengaged lfrom the driving means thereby enabling the latter to reciprocate to the full extent of their constant stroke.
  • the operating members are mounted for movement in a path substantially at right angles to that in Which the yarn carriers are traversible.
  • the yarn carrier selecting and driving arrangement comprises, in combination, a plurality of slides fitted with yarn carriers and mounted for reciprocation to various extents along yarn carrier bars disposed parallel to the straight needle bed, further bars fulcrumed to the yarn carrier bars and disposed substantially at ⁇ right angles thereto, slides with attached operating members which are movable up and down the operating slide bars, the slides associated with the yarn carrier bars being connected with the slides associated with the operating slide bars by reciprocable flexible members housed Within the bars, and continuously reciprocable driving means having a constant stroke for ⁇ action on a selected operating member or members.
  • a reciprocable. flexible connecting member is'meant onewhich is capable, when moved in a reciprocatory manner, of maintaining its form, and hence its eilicacy for the intended purpose, irrespective as to whether it is pulled or pushed.
  • the operating slide bars constitute the aforementioned housings for the operating members and are movable, selectively, about their fulcrum points to bring the corresponding operating members into and out of the range of the driving means according to requirements.
  • an operating slide bar is turned angularly towards or away from the driving means, it moves Without affecting the corresponding flexible connecting member.
  • Figure 1 is a plan View of the said mechanism
  • Figure 2 is a general perspective View showing one of the yarn guides with its associated operating slide and the means for selectively operating the same
  • Figure 3 is a detail front elevational view of one of the'yarn carrier slides, the corresponding operating member slide and the flexible member connecting the two,
  • Figure 4 is a detail transverse sectional view taken on the line IV--IV of Figure 2,
  • Figure 6 is a fragmentary front view illustrating the fulcrum between one of the yarn carrier bars and the corresponding operating slide bar
  • Figure 7 is a vertical sectional View of the continuousgly .reciprocable driving ⁇ means f shown in relation fte one i' of .the operating slide .driving members,
  • Figures 3-14 inclusive are diagrams illustrating successive stages in the actua-bionet.oneofmthe operating slide driving members bythe' continuously reciprocable driving means, u
  • Figure is an elevational viewoii therconnections through which the continuously reciprocable driving means are drivenfromtthemain cam shaft of the machine, and
  • At 21 is represented aichainincludedzinxthe :continuouslyreciprocable drivingameans.
  • the i mechanism includes a plurality of T-sec-tion slides I1 to thefgfronts -of-which-the Vyarn carrier vplates vi5 are-.secured ley-'means of e screws 18,. these slides being mounted for;Y reciprocationtoY various extents'within :the barsi.
  • each bar 5 has.formed.therein.-:a longitudinal recess I 9 :to receive the-corresponding slide l1 andthe latter is-retainedrin position within the recessby 'vertically Lspacedffguide.v rails ...20 vriveted to the front int-the saidffbar. .Two fixed outsideY stops., i., e. rghtf'han'dastopz' 8 andra left-,hand-stop. are; screwed position uponthe front of each yarn carrier bar 5.
  • Each ofuthe ⁇ substantially ⁇ verticali ⁇ 'slide bars I I isf.conne'cted rat.r its upperfend tothe. left-'hand end of.
  • the left-hand end of the T-shaped slot 2Q m 'ieachiyarn carrier bar"5 isextendedat 29a (see ... Figure 6) ina curve which is'concentric with respect to the axis of the fulcrum screw I5, thereby 1o ,enabling the length of chain 21 properly to peruforn'nits, function of transmitting motion from the operating member to the yarn carrier 1, ,thisiunction beingjn no-wise adversely' affected .:by movementof; the operating slide bar II about.
  • the damping devices operate 'Spy ..frictionalzicontact with .the bars'f5 and.' Il.
  • pad 33 imduntedlina
  • Aholder 34- which is mounted ina cslide-piecei35 .attached. by; screws '3S to therback :fof the plate. :Compression springs 31,'thepressure of which is variable. by screws 38, Vare inter- 4u:posed betweenthe holder 34 and. the slide-piece 1135.
  • l'Acompression spring 43 is housed within the boss 242i and ⁇ arranged to exert a light pressure upon the holder 40 and, through the medium of th-e leather pad 39, upon the bar II.
  • Thea carrier .51 is; mounted upon 'a' verticalislide irod'58for Imovement upand down,Y adjacentlto the operating slide bars II, atthe leftrhand'side at the back of the machine.
  • each single yieldable driving element 53 is controlled by a pair of axially opposed spring-loaded plungers 62 which normally function to maintain the said element in the horizontal driving position indicated in Figures 7. 8, 9, l1, 12, 13, 14 and 16.
  • the plungers 62 are of a greater width than the slots in which the associated yieldable driving elements 53 are pivotally mounted, so that downward movement of the upper plungers, 'effected by springs 63, is limited by contact with the top face of the cut bar 56, whilst the upper movement of the lower plungers, eiected by springs 64, is limited by contact with the L underside of the bar 56. Consequently, when?
  • the screwed bushes 65 are formed with enlarged heads 66 which are peripherally notched for ⁇ coless chain 69 mounted upon chain sprockets ⁇ 1 As shown in Figure 115, the chain 69 derives its motion from an oscillatory segment gear 1
  • This gear is arranged in mesh with a ⁇ driving pinion 82 on the main cam shaft of the machine.
  • cam bracket 83 is attached extends parallel to the yarn carrier bars 5, whilst the portion 59a of the said chain to which the carrier 51 is attached extends parallel to the slide rod SBV-fand the guide bar 59. In this way accuracy ofjthe positioning of the yarn carriers 1 in relation to "the slur cam 84, in both directions of knitting,
  • control drum I2 ⁇ is iitted with a rack wheel 81 (see Figure 1), adapted to be racked round by conventional racking means (not shown).
  • the drum i2 is racked to effect selection of a desired operating slide bar Il irrespective of which end of its stroke the corresponding operating member 25 has been left at a previous selection.
  • the operating slide bar Il a fragmentary portion of which is depicted therein, has been selected to bring the corresponding operating member 25, together with its two projected yieldable dogs 44 and 45, ⁇ into the range of the relevant yieldable driving element 53.
  • the said element 53 is in the course of being moved upwards and is about to act on the lower dog 44.
  • the element 53 is shown in contact with the dog 44, these parts remaining in the same relative position until the appropriate portion of the plate 6 of the corresponding yarn barrier 1 comes into contact either with the movable outside stop 32 o1' the fixed outside Vstop 8, as the case may be.
  • the element 53 yields upwardly against the action of theplunger 62 controlled by the spring 64 and is disengaged from the dog 45.
  • the element 53 is formed with a lug 53h adapted for engagement with the dog 45 suchWise as momentarily to depress the latter.
  • yarn carrier driving mechanism comprising. in combination, reciprocatory yarn carriers, stops for determining the ⁇ extents to which the said yarn carriers are traversible, reciprocable operating members, spring-controlled dogs fitted in the said operating members, bars in which the operating members reciprocate, means for transmitting motion between the operating members and the yarn carriers, continuously reciprocable driving means having a constant stroke, and including yieldable elements for co-operation with the aforesaid dogs, and means for selectively moving the operating members and their bars into and out of the :range :offthesaid driving means, the yconstrucftiontand.arrangementgbeing such that whenever 7zan -operatingfrmemberiand vits bars are selected eandzbroughtcnto the range of the drivingcmeans :ithefrelevant yieldablexdriving element acts upon vthe dogs'of'the appropriate pair alternately and so :effects traverses of the corresponding yarn carrier in opposite directions and the extents of ⁇ Vwhich, are determined by arrest of
  • f. carrier driving mechanism comprising, in combi- .,nation, reciprocatory yarn carriers, stops for deter'mining .theextents to which the said yarncari ,riers are ilraversible,” reciprocable opera-ting'memleerse-,mounted for movement-ina path at right angles tothatin which the yarn carriers are traversiblegspring-controlled dogs fitted in the said operating-members and normally.v projectedfrom l1 ⁇ the lattenunder the spring action, slides to which ⁇ .theyarn carriers are ttedfurther slides serving aftdcarrythe operating members, flexible members forfirconnecting and transmitting motion between thetwosets of slides, the said iiexible connecting members functioningfboth when pulled or pushed, 4bars-inwhich ⁇ the slides -carrying the operating ⁇ members, reciprocate, continuously lreciprocable drivingmeans having a constant stroke andincludingyieldable Aelements for co-operation with
  • incom- A-bination a horizontally disposed. straight needle bed, -yarn ycarriers fon supplying yarns to: needles Vin said.; ⁇ bed, a plurality ofreciprocable'slidesto .which the yarn-carriers are tted, yarn carrier :bars'disposed parallel tothe straight needle.bed
  • VYarn carrier driving ⁇ mechanism according vto claimfZ, .wherein the iiexible connecting ,members,A consist of, lengths of chain.
  • a straight bar knitting machine in comvbination, a horizontally disposedl straight needle bed, yarn carriers for supplyingr yarns to needles in said bed, a plurality of reciprocable slidesto which the yarn carriers are tted, yarn carrier bars'disposed parallel to the straight ⁇ need1ebed and uponwhich the said slidesare mounted for reciprocation, the said bars including guide-rails so spaced as to provide slots betvveenthem, stops crumed to the yarn carrier bars and aredisposed.
  • these vertical lbars also including vr ,guide, rails spaced ,toA provide slots.
  • a straight bar knitting machine in combination, a straight needle bed, yarn carriers for supplying yarns to needles in said bed, a plural-4 ity of reciprocable slides to which the yarn carriers are fitted, yarn carrier bars upon which the said slides are mounted for reciprocation, stopsA for determining the extents to which the yarn carriers reciprocate, further bars articulated to the yarn carrier bars, yslides movable along the said further bars, operating members attached to Y said last mentioned slides, a pair of spaced and oppositely directed spring-controlled dogs on each operating member, reciprocable ilexible members for connecting the slides on the yarn carrier bars with the slides on the further bars.
  • the said ilexible connecting members being housed within the bars and capable of being both pulled and pushed, continuously reciprocable driving means having a constant stroke and furnished with yieldably mounted elements for cooperation with the pairs of spring-controlled dogs on the operating members, means for selectively moving the aforesaid further bars so as to bring desired operating members into and out of the range of the driving means, whereby, ⁇ whenever i either dog on aY selected l*operating member is acted upon by a yieldable element included in the Vdriving means, traverse of the corresponding yarn carrier is effected until arrested by the appropriate stop' at which time the said operating member is automatically disengaged from the.
  • a straight bar knitting machine in combination, a horizontally disposed straight needle bed, yarn carriers for supplying yarnsto needles in said bed, a plurality of reciprocable slides'to which the yarn carriers are tted, yarn carrier bars disposed parallel to the straight needle bed and upon which the said slides are mounted for reciprocation, stops Vfor determining the extents to which the yarn carriers reciprocate, further bars which are fulcrumed tothe yarn carrier bars and are disposed vertically, ⁇ slides movableV up and down the vertical bars, operating members attached to said lastmentioned slides, a

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US110060A 1948-09-01 1949-08-13 Straight bar knitting machine Expired - Lifetime US2580603A (en)

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GB2580603X 1948-09-01

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US (1) US2580603A (fr)
DE (1) DE814198C (fr)
FR (1) FR993692A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321807A (en) * 1978-12-29 1982-03-30 William Cotton Limited Draw mechanism for straight bar knitting machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1059139B (de) * 1952-12-22 1959-06-11 Cotton Ltd W Mehrfonturige flache Kulierwirkmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1982991A (en) * 1932-02-04 1934-12-04 Wildman Mfg Co Full-fashioned knitting machine
US2002070A (en) * 1931-01-26 1935-05-21 Celanese Corp Knitting machine
US2006694A (en) * 1932-12-21 1935-07-02 Wildman Mfg Co Straight knitting machine
US2353973A (en) * 1941-12-31 1944-07-18 Mellor Bromley & Co Ltd Knitting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2002070A (en) * 1931-01-26 1935-05-21 Celanese Corp Knitting machine
US1982991A (en) * 1932-02-04 1934-12-04 Wildman Mfg Co Full-fashioned knitting machine
US2006694A (en) * 1932-12-21 1935-07-02 Wildman Mfg Co Straight knitting machine
US2353973A (en) * 1941-12-31 1944-07-18 Mellor Bromley & Co Ltd Knitting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321807A (en) * 1978-12-29 1982-03-30 William Cotton Limited Draw mechanism for straight bar knitting machines

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Publication number Publication date
DE814198C (de) 1951-09-20
FR993692A (fr) 1951-11-05

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