US2611253A

US2611253A - Pattern device for circular knitting machines

Info

Publication number: US2611253A
Application number: US753515A
Authority: US
Inventors: Diem Hans
Original assignee: Edouard Dubied et Cie SA
Current assignee: Edouard Dubied et Cie SA
Priority date: 1943-02-15
Filing date: 1947-06-09
Publication date: 1952-09-23
Anticipated expiration: 1969-09-23
Also published as: CH237611A; GB591269A; FR900941A

Description

'Sept. 23, 1952 H. DIEM 2,611,253

PATTERN DEVICE FOR CIRCULAR KNITTING MACHINES Filed June 9, 1947 I 6 Sheets-Sheet 1 13 fig-.

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Patented Sept. 23, 1952 PATTERN DEVICE FOR CIRCULAR KNITTING MACHINES Hans Diem, Neuchatel, Switzerland, assignor to Edouard Dubied & Cie, Societe AnonymaNeuchatel, Switzerland Application June 9, 1947, Serial No. 753,515 In Germany February 15, 1943 Section 1, Public Law 690, August'8, 1946 Patent, expires February 15, 1963 8 Claims.

The present application is in the nature of a continuation in part of my earlier copending application Serial No. 522,472 filed on February 15, 1944 which is now abandoned.

Pattern mechanisms comprising pattern wheels or'tapes, are generally used in circular knitting machines for manufacturing fancy looped fabrics. Such pattern mechanisms either are disposed at each feeder or patterning station, in which case they may be called partial pattern mechanisms, or one mechanism only is provided for all the said feeders or stations.

My invention relates to a pattern mechanism for the needles of multi-feeder circular knitting machines, which comprises a plurality of partial pattern mechanisms each associated with a feeder. A wide variation of patterns is afforded in that selector means disposed in the pattern wheels, are adjusted by pattern means.

In accord with my present invention I provide a pattern tape common to all the feeders, by means of which selectors disposed in the pattern wheels, are adjusted according to the pattern at hand, are maintained in their selective or working position, respectively, during at least one revolution of the pattern wheel, and thus act continuously on to the needles .or jacks of the machine respectively until thepattern tape gives origin to another-selective position of the selectors.

In the accompanying drawing two forms of invention .are illustrated, partially schematically, as applied to a circular knitting machine, having a single set of needles and a rotary cylindrical bed, a jack being associated with each selector in the first example, but not in the second example. In the drawings- Fig.1 shows a first example in vertical section through a partial pattern mechanism, on line I-I of Fi 2, v

Fig. 2 a top plan view of Fig. 1,

Fig. 3 an elevation and section on line III-III of Fig. 2,

Fig. 4 schematically, a top plan view of the machine having twelve feeders or partial pattern mechanisms respectively, with a pattern tape common to all the feeders,

Fig. 5 a selector jack of different design,

Fig. 6 a pattern wheel in vertical section on line VIVI of Fig. 2,

Fig. 7 a partial view in direction of the arrow A in Fig. 2,

Fig. 8 a top plan view'of Fig. 1 in which, however, the operative state of the partial pattern mechanism is different from that shown inFig. 2,

Fig. 9 a vertical section through the pattern wheel on line IX -IX of Fig. 8,

.Fig. 10 a vertical section of the second example, through a partial .pattern mechanism on line .XX of Fi 12,

Fig. 11 a selector of different design,

Fig. 12 a top plan view of Fig. 10, a cover plate provided with control cams, being omitted,

Fig. 13 the portions of a composite controlstructure, developed about point B of Fig. 12, in workingposition and as seen from 'the inside, and appurtenant actuating elements, and

Fig. 14 a view in direction of the arrow D in Fig. 12.

In the first example (Figs. l-9) i-l2 (Fig, 4) designate a partial pattern mechanism each of a jacquard circular knitting machine comprising twelve feeders, Hi the base of such partial pattern mechanism, rigidly secured to the table top I4 (Figs. 1, 4), 15 (Fig. 1) the rotatable needle cylinder comprising the toothed rim l6 for actuating the gear wheel I! of each partial pattern device. The needles l8 of cylinder I5 are hingelike engaged to a jack or pusher l9 each. Numeral 29 indicates a stud rigidly secured to gear Wheels and intermittently engaging a pinion 2| for the purpose of turning same for one tooth division at each revolution of gear wheel ll.

Numerals

22 and 23 indicate the pivots of pinion 2| and pattern wheel 30 respectively which are rigidly secured in base 13, pattern wheel 30- being rigidly mounted on gear wheel IT. A plate 24 is rigidly secured to pivot 22, and comprises the pivot 25 of a bell- .crank lever 26.

Numeral 21 indicates a cam or guide groove in .pinion 2| for engaging a stud 28 of bell-crank lever 26 for the purposeof setting the jacks 31 which are disposed radially displaceable on pattern wheel 38, each jack coacting with a selector 32. Numeral 29 designates one of the cams secured to the conventional cam-box, known per se, at each feeder, which brings all the jacks 19 into working position (see Fig. 1 in dash and dot) before same are brought into their position of rest, as defined by thepattern, by means of the selectors 32.

A leaf spring 33 is rigidly secured to pivot '23, for the purpose of bringing the selector 32 disposed in pattern wheel into their initial posi- 3 of

perforations

36, and 31, 38 (Fig. 3) are cuts in pattern tape 35.

At each feeder, a cam or stop 39 (Figs 3, 8) is secured to the conventional cam-box. The pattern-tape casing is designated by 40 (Fig. 4), and the guide rolls for the pattern tape 35 by 4|.

Three positions are envisaged for the selectors 32, viz. the position of rest and the working position, as shown in Fig. 1 in the left hand and the right hand portions respectively of pattern wheel 30, as well as the initial position shown in Fig. 6.

The machine operates as follows:

Each partial pattern mechanism |-|2 is rotated in the same direction by means of the gear wheels I! meshing with toothed rim l6 of needle cylinder l5, which latter continuously rotates in a direction indicated in Figs. 2, 4, and 8 by an arrow. The endless pattern tape 35 is continuously moved along by the guide pins 34 provided in pattern wheels 30, the said tape being, as known, spirally wound and unwound in casing 40. At the start of the operation, all the selectors 32 are adjusted as required, during the first revolution of pattern wheels 30 by means of pattern tape 35 and the jacks 3|. In Fig. 1, in the left hand portion of the pattern wheel 30, the jack 3| and the selector 32 are shown in the position of rest, assuming that pattern 35 at the respective point does not present a cut 31 to the jack 3|, so that the latter, and thus the respective selector 32, are moved by pattern tape 35 toward the center of pattern wheel 30. In this depressed position of parts 3| and 32, the lower lug of selector 32, when turning pattern wheel 30, is outside the range of cam or stop 39.

Jack 3| and selector 32 remain in such latter position during at least one revolution of pattern wheel 30, until they are moved (according to Fig. 2) again into their initial position (shown in Fig. 6) and thus into the range of pattern tape 35. When selector 32 is in the position of rest, its top lug is outside the range of jack I9, and the needle I8 coupled to the latter remains in working position, in that jack l9 in cylinder |5 is not depressed into its guide groove, and its lug thus is within the range of the cams. In Fig. 1, in the right hand portion of pattern wheel 30, the jack 3| is in working position, and also the selector 32; the pattern tape 35 at the corresponding point has a cut 31 so that jack 3| and selector 32 are not moved by the pattern tape 35 toward the center of pattern wheel 39, i. e. jack 3| and selector 32 are not depressed. When pattern wheel 30 rotates, the lower lug of selector 32- comes within the range of the stop 39, whereby selector 32 is vertically lifted and brought into the position shown; when the lower selector lug has moved out of range of stop 39, jack 3| according to Fig. 8 is slid toward the center of pattern wheel 30 by bell-crank lever 26 which coacts with its lower lug, and thus, according to Fig. 9, underneath selector 32. Jack 3| and selector 32 remain in such latter position until the former is moved by bell-crank lever 26, and the latter (as shown in Fig. 2) by a skew face of spring 33 back into the initial position (Fig. 6) and thus into the range of pattern tape 35. In the corresponding vertical and raised position of selector 32 (Figs. 1, 9), its upper lug engages that of jack IS, in order to bring needle |8 coupled therewith, into the position of rest, in which jack |9 is depressed into its groove by the top lug of selector 32, and thus into a position outside the range of the cams 29. v

The number of jacks 3| and selectors 32 disposed in pattern wheel 30, corresponds to a fraction of the number of needles |8 of cylinder I5; and the spacing of pattern wheels 30 corresponds to the length of a series of

cuts

31 and 38 respectively, of pattern tape 35, which series brings about the adjustment of the selectors 32 provided on the pattern wheel 36. In the present example, the number of selectors 32 for each pattern wheel 30 amounts to one-twelfth of the number of needles so that each pattern wheel 30, therefore, rotates twelve times during one revolution of cylinder l5 and pattern tape 35, for the purpose of selecting the jacks l9 and thus the needles l8. During eleven revolutions of each pattern wheel 30, the adjustment of the selectors 32 by the pattern tape 35, effected during the first revolution of wheel 30, remains intact. During the thirteenth revolution of each pattern wheel 30, all the selectors 32 and jacks 3| are pushed, as will be explained more fully later, by bell-crank lever 26 (Fig. 2), and spring 33, which latter is provided with an inclined guide face, into theinitial position shown in Fig. 6 so that jacks 3| subsequently coact with a series of cuts 31 of pattern tape 35 to again move the selectors 32 into the selective position.

Bell-crank lever 26 is engaged and disengaged, at any desired time intervals or respectively after a certain number of revolutions of the respective pattern wheel 30, by means of control groove 21 of pinion 2|. Stud 20 secured to gear wheel l1, during each revolution is engaged in aninterdental gap of pinion 2| and turns the latter, in the present example, by a tooth division. After each twelfth actuation, bell-crank lever 25 is swung, during a revolution of pattern wheel 30 and by means of stud 28 sliding in control groove 21, into the working position according to Fig. 2 so that the jacks 3| or selectors 32 respectively, may mesh with pattern tape 35.

During the first revolution of pattern wheels |--|2, the pattern tape 35 acts onto the jacks 3| or selectors 32 respectively, which are to be selected. After such first revolution of pattern wheels |--|2, the jacks 3|, according to Fig. 8, are held out of range of the pattern tape by bellcrank lever 26 during the other eleven revolutions, whereas the selectors 32 remain in their working position according to Fig. 9.

By virtue of such engaging and disengaging of the jacks 3| taking place at predetermined time intervals, one attains a continuous uniform movement of the endless pattern tape 35. In order to ensure a reliable and positive selection of jacks 3|, the

cuts

31 and 38 in pattern tape 35 are so spaced and disposed, that each group of

cuts

31 and 38 respectively may act only unto the lacks 3| of a certain partial pattern mechanism. To such end, the horizontal lug of jacks 3 I ,which have to be brought into mesh with pattern tape 35, are correspondingly staggered in two consecutive partial pattern mechanisms. Fig. 5'shows a jack 3| having a horizontal lug which isfstaggered with respect to that of the jacks 3| shown in Fig. 1 etc. l

In the second example (Figs. 1014), like parts and portions are designated by like numerals as in the first example, jack and selector, however, being formed by a single working element which is correspondingly adapted.

Two cams or stops 42 and 43 (Fig. 12) are rigidly secured to the toothed rim l6, to coact with stud 44 of a latch 45, and an arm 46 is pivoted to latch 45 on pin 4'! (Fig. 14), which arm serves for coupling latch 45 with aslide 48 in order to automatically actuate element '50 which is pivoted onpin '49 (Fig. 12) in the pedestal support 55 for the pattern wheel having a supporting eye 55', and a Supporting wall 55-".

An actuating element (Figs. 12, 13) is pivoted on pin 52 in a bearing block of support '55, and is actuated by the studs 54 mounted on the slide members '53. The cover plate 55 is mounted on base I3. The numeral51 indicates the butt, 58 and59 the lugs, and 60 the stem top portion ofselector 66. Numeral 5! indicates a cam disc, and 62 the cams which are rigidly mounted to the underside of cover plate 56 and serve for coercively guiding the selectors 56 which are in their operating position. A segment 53 is provided'for guiding the studs 54, and a bush 64 having an upper control rim (Fig. 14); bush 64, segment 63 and support 55 form a single structure. Numeral 55'indicates a control structure comprising four portions, each latter being secured on a slide member '53 guided displaceable in pattern wheel Such latter partial pattern mechanism for a jacquard circular knitting machine having a plurality of feeders, operates as follows: I

At each feeder, pattern wheel of a partial pattern mechanism is continuously rotated by the toothed rim l6 of needle cylinder 15, by means of gear wheel H, in the direction indicated in Fig. 12; at the Sametime the endless pattern tape is moved continuously by means of th guide pins 34 provided in pattern wheel 30.

During the first revolution of pattern wheel 30, the control structure 65 which comprises four portions first moves all the selectors 66 into the initial position. To such end, 1atch'45 (Fig. 12) is displaced, when turning toothed rim 16, by the cam or stop 42 which acts on the stud 44, and thus also slide 48 which is coupled to latch 45 by means of arm 45. Slide 48 thus is swung to the right, with respect to Fig. 12, and element 50, therefore, is rocked from its horizontal position (shown in full lines in Fig. 13) into the oblique position indicated by dotted lines. The studs 54, guided on the curved control rim'of bush 54, then slide underneath element 50 in a path indicated by a dot-and-dash arrow. The control structure 65, as well as all the selectors 66 disposed in pattern wheel 30, thus are moved from the operative position (shown in Fig. 12 at point C, and in Fig. 10 in the right-hand portion of the pattern wheel) into the initial position (shown at point B in Fig. 12, and in Fig. 10 in the left-hand portion of the pattern wheel). The bottom butt 5! provided on each selector 66, serves for displacing the selector by means of the control structure 65 from the selective into the operative position, and from the latter into the initial position. The said butt 5'! further serves for locking selector 65 in its operative position by control structure 65. Under the action of the camming curves formed by disc 61 and cams 62, onto the correspondingly adapted stem top portion 50 of selector 66 (which is in operating position) the latter is continuously subjected, as shown in Fig. 10 (right hand portion of the pattern wheel) to a certain coercive tilting movement, which permits of attaining a positive selection of needles l8, or, respectively, the jacks IS on jacquard circular knitting machines of any diameter and division. To such end, further, the selector B6 is provided with the head lug 59 for depressing jack IS in needle cylinder I5 (vide Fig. 10, right-hand portion of pattern wheel 6 35) and thus moving same outrof range of'rthe feeders.

At point B (Fig. 12) the selectors asere sesame 10)., whereby also all-the selectors .66 which have been depressed into 1 the selective 1pOsit1onJby-pat-J tern tape 35, :are moved into the operative-position. Upon completing a revolution of pattern wheel 130, all of :the selectors v(iii have been adjusted, asrequired, by pattern tape 35 and control structure .65. .Latch 45,;slide 48'and actuating element thenagainare brought into the initial position (shown in Fig. 13) under action of cam :or Ste-p43 on stud 44. Theporti'ons or components of control structure 65and the .selectors 56 actu ated by the latter, therefore, remain'ror the time being,:in operating position, i. e. until'anew selection of the selectors is taking place, inthe manner provided .for and after a predetermined time interval. .It is possible, however, either-to change the selectiveposition of the selectors con tinuously, i. e. after each revolution .ofpattern wheel .30, orito maintain .thesaidselective position by disengagingslide 48 from latch-45 by means :of

arm 46. i

The individual control portions orcomponents produced by subdividing control structure 65, are actuated by element 50 andiby the curved top controlrim of bush .64 .in accurately deter-- mined time intervals, and the selectors 65 .asso ciated'therewith thus also are-positively adjusted without'theneed of any intermediate position.

In order to ensure a reliable :selectionof :the selectors 66, the

cuts

31 and 38 in pattern tape 35 are so punchedin tworrows that :a group "of cuts each isdestined for the selectors of one certain partial pattern mechanism only. To such end, the lugs 58 of selectors 66 which have to be brought to mesh with pattern tape 35. are staggered in two consecutive partial pattern mechanisms. The selector 66 shown in Fig. 11 possesses a lug 53 which is ofiset or staggered with respect to the selector 66 shown in Fig. 10 said lug being engaged by pattern tape 35.

What I claim and desire to secure by Letters Patent is:

1. A pattern mechanism for controlling the needles of a circular knitting machine of the class described and including a plurality of partial pattern mechanisms continuously operated by gear means, each mechanism being associated with a feeder or working station, comprising a single pattern tape, a base, a pattern wheel for each said feeder or station pivoted on said base, a plurality of selectors mounted radially and longitudinally displ-aceable in each pattern wheel, means for moving the said selectors in sequence into an inoperative, an initial, and an operative or working position respectively, according to the pattern punched into the said pattern tape, means for holding each said position during at least one revolution of the respective pattern wheel to permit of correspondingly and continuously controlling the needles on the rotary cylindrlcal needle bed of the machine until the said pattern tape will bring about another operative position of said selectors.

2. In a pattern mechanism set forth in claim 1, a partial pattern mechanism, comprising a selector and associated jack for each needle to be selected, a pinion pivoted to the said baseand adapted to be turned by .one tooth space at each revolution ofsaidpattern wheel, ja guide groove provided on the top face'of said pinion, a plate secured to the head of the pivot onwhich the said pinion rotates, a bell-crank lever pivoted to and guided by said plate and provided with a cam groove for engaging the said selector jacks, a stud rigidly secured to said bell-crank lever for engagement in said guide groove to radially displacesaidselectorjacks during each revolution of the pattern wheel from the inoperative into the initial position, a cam box having a cam adapted to raise said. selectors into the operative position and a leaf spring rigidly secured to the top of the pattern wheel and adapted to depress the said selectors from the operative into the initialposition; the whole in such combination as. .to move the selectors into the said positions either individually or collectively.

3. In a pattern mechanism as setforth in claim 1, a single pattern tape having a plurality of rows, openings therein arranged according to a desired pattern, each of said rows of openings being positioned to set only selectors of certain definite partial pattern mechanisms.

4. In a pattern mechanism set forth in claim 1, a partial pattern mechanism, comprising a. pattern wheel, a plurality of selectors to be selected and mounted in the pattern wheel, slide members guided displaceably in the pattern wheel, a control structure secured to one of the said slide members and adapted to move the latter for the purpose of actuating the selectors and the knitting needles, cam means for engaging and moving said slide members vertically, and latching means for locking the moved selectors in their adjusted position.

5.. In a pattern mechanism set forth in'claim 1,- a jack for each needle, a partial pattern mechanism, comprising a selector each adapted to directly move the jack of each needle to be selected, and means for adjusting according to a predetermined pattern all the selectors 'in the pattern wheel by means of the pattern tape.

6. In a-pattem mechanism set forth in claim 1, a jack for each needle, 9. partial pattern mechanism, comprising a selector each adapted to directly move the jack of each needle to be selected, means for adjusting according to a predetermined pattern all the selectors in the pattern wheel by means of the pattern tape, latch means for locking the selectors in the operative position, slide means for displacing th selectors from the initial into the operative position, and a butt on each selector for efi'ecting the said looking and displacing operations and adapted to co-operate with said control structure.

7. In a pattern mechanism set forth in claim 1, a jack for each needle, a partial pattern'mechanism, comprising aselector each adapted to directly move the jack of each needle to be selected, means for adjusting according to a predetermined pattern all the selectors in the pattern wheel by means of the pattern tape, latch means for locking the selectors in the operative position, slide means for displacing the selectors from the initial into the operative position, a butt on each selector for effecting the said looking and displacing operations and adapted to co-operate with saidcontrol structure, a lug on the head of each selector and adapted to engage the needle jack.

g 8. In a pattern mechanism set forth in claim 1, a jack for each needle, a partial pattern mechanism, comprising a selector each adapted to directly move the jack of each needle to be selected, and means for adjusting according to a predetermined pattern all the selectors in the pattern wheel by means of the pattern tape, the latter including a plurality of portions mounted displaceably in the pattern wheel for the purpose of adjusting said selectors.

HANS DIEM.

No references cited.