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US3609995A - Patterning mechanism for knitting machines - Google Patents

Patterning mechanism for knitting machines Download PDF

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Publication number
US3609995A
US3609995A US797168A US3609995DA US3609995A US 3609995 A US3609995 A US 3609995A US 797168 A US797168 A US 797168A US 3609995D A US3609995D A US 3609995DA US 3609995 A US3609995 A US 3609995A
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US
United States
Prior art keywords
patterning
drum
selector levers
butts
bluffing
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
US797168A
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English (en)
Inventor
Denis John Harris
Peter Michael Findlay
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.)
BENTLEY MACH DEV CO
BENTLEY MACHINE DEVELOPMENT Co LTD
Original Assignee
BENTLEY MACH DEV CO
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 BENTLEY MACH DEV CO filed Critical BENTLEY MACH DEV CO
Application granted granted Critical
Publication of US3609995A publication Critical patent/US3609995A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
    • D04B15/74—Pattern drums

Definitions

  • FIGS. 1 A first figure.
  • a patterning device in a circular knitting machine having a rotary pattern controlling member fitted with interchangeable patterning means and driven at a constant speed suitably related to the speed of rotary knitting, selector levers associated with the said patterning means to act on butts of instruments associated with the needles, and means for bluffing different groups of selector levers as and when required, said blufling means being selected for actuation at appropriate times from a control drum or chain of the machine.
  • This invention is for improvements in patterning mechanism for knitting machines and is concerned more particularly with mechanism such as is used in circular knitting machines, for example in machines used for the production of ladies hose.
  • a known form of patterning device is used in machines for knitting ladies hose is a patterning drum having set out in predetermined arrangement around its periphery rows of pins or pattern bits for the control of patterning levers associated with the needle cylinder and indexed by a racking mechanism during operation of the machine.
  • Such patterning devices are not altogether suitable for use on machines operated at high speeds since they would require rapidly succeeding increments of movement in the racking action which would set up considerable reaction and tend to limit the speed of operation.
  • re-arrangement of the pins or pattern bits in the drum is required and this is a time-consuming procedure.
  • the invention seeks to provide a patterning means which is particularly applicable for use with machines operated at high speed, and also one in which some or all of the aforementioned disadvantages are largely or wholly circumvented.
  • a patterning device comprising a rotary pattern controlling member fitted with interchangeable patterning means, means for driving said rotary member and patterning means at a constant speed suitably related to the speed of rotary knitting, selector levers associated with the patterning means of the rotary member for acting on butts of instruments associated with the needles, and means for blufiing diiierent groups of selector levers as and when required, said blufling means being adapted for selective actuation at appropriate times from a sequence control means (e.g. a control drum or chain) of the machine.
  • a sequence control means e.g. a control drum or chain
  • the patterning means on the rotary member is formed by an assembly of interchangeable superposed patterning discs each provided at appropriate positions with peripheral projections.
  • the selector levers may be provided each with two angularly offset followers one of which cooperates with a related pattern disc and the other of which is acted on by the blufling means.
  • the arrangement may be such that deflection of each selector lever by a projection on its patterning disc moves it against the action of a return spring away from co-operation with instrument butts provided at the level of that lever.
  • the blufiing means deflects a selector lever similarly it will hold the lever out of engagement with its pattern disc.
  • the blufiing means comprises a drum set up with longitudinally extending plates or bars for co-operation with followers on the selector levers for the purpose of bluffing their action, such plates or bars being cut away a the levels of selector levers which are not required to be blutfed when the particular plate or bar is moved into position to co-operate with the selector levers.
  • the drum carrying such plates or bars may be provided with racking means which is controlled, e.g. blutfed or unblufied, from a main control means on the machine at appropriate times when a change of patterning selection is needed.
  • Other forms of blufiing means may however be employed for example electronically operated means which may serve to act on the selector levers in any convenient manner.
  • FIG. 1 is a plan view partly in section showing the patterning mechanism in position adjacent to the needle cylinder
  • FIG. 2 is a cross-sectional side view of some of the rlrlrecllilanism shown in FIG. 1 taken on the section line
  • FIG. 3 is a developed view of part of the needle cylinder showing a typical selector butt set-out, and
  • FIG. 4 is a diagrammatic plan view showing a modification.
  • the pat terning means is used to cause needles to follow tracks suitable for knitting, for tucking and for floating.
  • Such needle selection is not only used for the creation of pattern effects but is also used for certain fundamental manufacturing requirements such as needle selection for the make-up courses or to provide a picot edge to the welt.
  • An article of hosiery may require one needle selection for make-up, another for a picot edge, a different selection for a garter band, and a still further selection of needles for micromesh or other decorative knit, tuck or float patterns.
  • FIG. 3 A typical set-out of needle selector butts is shown in the developed view, FIG. 3.
  • the two bands of butts D1 and D2 are for a garter band.
  • the butts E in the single line are to cause interlacing of yarn ends when making yarn change.
  • Butts F1 and F2 are for micromesh patterns and the single row of butts G is to produce a one and one miss and knit selection for the make-up.
  • Other rows of butts are shown which serve to produce certain eiTects which need not be described in detail.
  • selector levers 12 Acting on these butts to depress them from non-knitting, or not to depress them for knitting or tucking at the next knitting station, are selector levers 12, FIG. 1, which have cam followers 12b and 12c. These selector levers are stacked to align one with each height of butts on the selecting instruments.
  • the lever followers 120 are acted upon by pattern discs 11a, the stack of pattern discs being clamped together to form a drum 11 and gear driven in timed relationship to the needle cylinder.
  • the other lever followers 12b are acted upon to bluff out of action some or all of the selector levers.
  • the bluffing mechanism comprises a small, vertically slotted, cylindrical, rack driven drum 15, the vertical slots being fitted with suitable bluffing bars 14. The drum commences and ceases racking upon suitable control signals from the main control drum or chain of the machine.
  • the selector levers 12 are therefore controlled by two drums, drum 11, which takes the place of the usual pin drum, and drum 15 which has an overriding effect on the selector levers to cancel (or blank out) sections of drum 11.
  • drum 11 which takes the place of the usual pin drum
  • drum 15 which has an overriding effect on the selector levers to cancel (or blank out) sections of drum 11.
  • the selector levers 12 are pivotally mounted on a post 25 and the drums 11 and 15 are rotatably mounted on posts 2 6 and 27 respectively, all of the posts 25, 26 and 27 being fixed to the support bracket 1.
  • a gear which drives the pattern disc assembly through a chain of gears 6, 7, 8, 9 and '10.
  • the pattern discs 11a lift individual selector levers 12 into inoperative position (shown dotted) or allow them to drop into operative position (shown in full lines).
  • the selector levers are urged by springs 23, 23a into operative position, just clear of the needle cylinder, and are located clear of the cylinder by an adjustable stop plate 13 which engages with faces 12a on the selector levers 12.
  • the springs 23 act on alternate ones of the selector levers at positions displaced one way from the pivot post 25 while the springs 23a act on the intervening selector levers at positions displaced the other way from said post.
  • Springs 23 and 23a extend respectively from anchorage posts 28 and '29 fixed to support bracket 1. This alternate arrangement of springs extending opposite ways allows the selector levers to be positioned with the required degree of proximity to one another.
  • Followers 12b of the selector levers are acted upon by the bluff bars 14 (which are located in vertical slots in the drum 15), in order either to swing groups of selector levers 12 out of operative position or to allow predetermined groups of selector levers to move under the action of their under springs into operative position.
  • a rack wheel 16 Attached to the bottom of the bluff drum 15 is a rack wheel 16 which is racked by a racking lever 17 acted on by a spring 30 and pivoted by shoulder screw 18 to a lever 19. Nose 19a of the lever 19 is urged by spring 20 onto an eccentric cam 21 which is adjustably attached to gears 6 and 7.
  • patterning mechanism is easily accessible on the knitting machine a quick and easy pattern change can be effected by changing pattern discs and bluffing bars.
  • pattern discs 11a are provided with more than one keyway so that identical discs may be'used at different levels but with their lobes in various angular relationships to each other.
  • FIG. 4 shows such a modified arrangement having a drum sector 31 replacing the blufling drum 15 and fitted with seven blufiing plates 14 to cooperate with the levers 12.
  • the drum sector 31 is pivoted on the post 27 and has an operating arm 32 coupled by an anchorage 33 to one end of a Bowden cable 34 having a sheath 35.
  • the other end of cable 34 is coupled to an anchorage 36 to one arm 37 of a double armed lever 37, 38 pivoted to a fixed post 39.
  • the other arm 38 of the lever 37, 38 forms a cam follower to engage with cams 40a, 40b and 40c of different heights on a main control drum 41.
  • a tension spring 42 acting on arm 32 maintains the cable 34 taut and the follower 38 in engagement with the cams.
  • a circular knitting machine having a rotatably mounted needle cylinder equipped with needles and related patterning instruments having butts operable to perform a rotary knitting operation, and main control means; the combination of a pattern controlling drum mounted for rotation about an axis and comprising interchangeable patterning elements, means for continuously rotationally driving said pattern controlling drum and its patterning elements in timed relationship With said needle cylinder, 2.
  • said patterning elements comprise an assembly of interchangeable superposed patterning discs each provided at appropriate positions with peripheral projections engageable with said first arms of corresponding said selector levers.
  • a combination according to claim 4 including spring means acting individually on said selector levers to urge them into said active position for cooperation with said butts of said patterning instruments, said projcetions of said patterning discs being engageable with said first arms of said selector levers to move said levers to inactive position against the action of said spring means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US797168A 1968-02-10 1969-02-06 Patterning mechanism for knitting machines Expired - Lifetime US3609995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB672468 1968-02-10

Publications (1)

Publication Number Publication Date
US3609995A true US3609995A (en) 1971-10-05

Family

ID=9819625

Family Applications (1)

Application Number Title Priority Date Filing Date
US797168A Expired - Lifetime US3609995A (en) 1968-02-10 1969-02-06 Patterning mechanism for knitting machines

Country Status (6)

Country Link
US (1) US3609995A (de)
CS (1) CS153494B2 (de)
DE (1) DE1906567A1 (de)
ES (1) ES363462A1 (de)
FR (1) FR2001701A1 (de)
GB (1) GB1251646A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973415A (en) * 1973-12-22 1976-08-10 Wildt Mellor Bromley Limited Pattern mechanism

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630050A (en) * 1970-04-01 1971-12-28 North American Rockwell Patern mechanism for knitting machines
IT1070400B (it) * 1976-08-30 1985-03-29 Micheletti Fabrizio Congegno programmatore per macchine circolari da calze e simili
DE3018964C2 (de) * 1980-05-17 1982-12-23 Karl 7298 Loßburg Hehl Schaltschrank
DE3222744C2 (de) * 1982-06-18 1986-01-23 Terrot Strickmaschinen GmbH, 7000 Stuttgart Vorrichtung zur Selektierung von Stricknadeln bei einer nach der Drei-Weg-Technik arbeitenden, mehrsystemigen Strickmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973415A (en) * 1973-12-22 1976-08-10 Wildt Mellor Bromley Limited Pattern mechanism

Also Published As

Publication number Publication date
FR2001701A1 (de) 1969-09-26
DE1906567A1 (de) 1969-11-13
ES363462A1 (es) 1970-12-16
CS153494B2 (de) 1974-02-25
GB1251646A (de) 1971-10-27

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