US1713353A - Pattern control means for knitting machines - Google Patents

Pattern control means for knitting machines Download PDF

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Publication number
US1713353A
US1713353A US30570A US3057025A US1713353A US 1713353 A US1713353 A US 1713353A US 30570 A US30570 A US 30570A US 3057025 A US3057025 A US 3057025A US 1713353 A US1713353 A US 1713353A
Authority
US
United States
Prior art keywords
yarn
pawl
pattern
lever
idling
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
US30570A
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English (en)
Inventor
Charles B Barnes
Charles J Mcdermott
Harrison G Reynolds
Albert E Page
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.)
Scott and Williams Inc
Original Assignee
Scott and Williams Inc
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
Priority to FR604251D priority Critical patent/FR604251A/fr
Application filed by Scott and Williams Inc filed Critical Scott and Williams Inc
Priority to US30570A priority patent/US1713353A/en
Priority to DES80220D priority patent/DE495374C/de
Priority to GB6318/26A priority patent/GB248772A/en
Application granted granted Critical
Publication of US1713353A publication Critical patent/US1713353A/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
    • D04B15/665—Driving-gear for programme or pattern devices

Definitions

  • Our invention relates to knitting machines and more particularly to 'pattern 4control means therefor.
  • the invention is particularly useful in the making of stripes in stockings containing plated fabric, but it has many other applications.
  • One object of our invention is lto provide a machine which produces a long series of 'pattern changes progerly coordinated with the control of t e basic pattern movements; and another object of this invention is to provide improved mechanism which is capable of producing a large variety of patterns.
  • the machine .lncludes a ratchet and pawl-operated pattern control means, independent idling means, and other idling mechanism therefor havlng angular motion.
  • the invention w1ll be described in connection with the process and mechanism for producing plated horlzontal stripes in hosiery which forms the subject matter of the patent to said Robert W. Scott and Albert E. Page 1,666,794 dated April 17 1928 of which this is a division.
  • Fig. 1 is a side elevation in section through mg the yarn guides and the levers controlling them
  • Fig. 2 is a side elevation on a smaller scale of the pattern drums controlling the yarn guides;
  • Fig. 3 is a plan view of our yarn tensionchanging means
  • Fig. 4 is a front elevation of our yarn ten-A sion-changing ,means showing part of the wave of the needles; y
  • Fig. 7 is an elevation of the hook of a needle showinghow the yarns'are fed to the needles )art of the head of a knitting machine showwhen the Iyarn guides are in the positions shown in ig. 6;- :f 1
  • Fig. 8 is a view similar to Figure 7 taken when the arn guides are in the.position shownin ig.5;andv
  • Fig. 9 is a detail elevation of the mechanism controlling the movement of the striping pattern drum.: e
  • each plating yarn can be knit in yfirst on one side of the fabric and then on the other.
  • the needles are indicated at N and the throat plate at 559, while the yarn feeding lingers over the throat plate are indicated at F.
  • These yarn fingersV F are pivoted on a crosspin 554 set in the upright portion of the latch ring 550, the latter beingpivoted at a point 552 to the latch ring bracket 401.
  • a separate yarn 'nger is used or each plating yarn and these fingers are made free to reciprocate-radially to the needle circle vby passing'the crosspin through a slot s in each such'yarn finger -instead of the customary fitted hele.
  • the yarn fingers can be raised out of feedlng relation -to the needles by means of the customary thrust bars 460 acting on thel under side of the yarn fingers, Whenever a change of yarns is desired. These thrust bars 460 are controlled by some of the usual cams on the.
  • main pattern drum 120 in any well known manner. Y l.
  • Each lever bar is fastened at ⁇ its lower end to the upper arm of a bell crank lever 17 -pivoted on a stud 18 mounted on a bracket ml fastened to the frame of the machine. Also mounted on this bracket, near the stud 18 is a shaft 19 whichcarries rotating attern control means consisting of an auril-l lary or striping,l pattern drum 20. Also on the shaft 19 is a ratchet wheel 21, the drum and wheel being adjustably fastened together, but-free to turn on the shaft 19.
  • the striping pattern drum is tur'ped by a hook plate 23 on one end of a racklng pawl 23 engaging the teeth on theratchet wheel 21.
  • This racking pawl 23 is swivelled at its other 'end to a lever 24, pivoted on the frame of the machine.
  • This' lever 24 yand the racking 'pawl are reciprocated continuously b a heart shaped cam 25 located on the main drive shaft 32 beside the main bevel gear'31, the engagement between the camfand the lever 24 being meafns vof 'a roller 26 on one side of the end of the lever.
  • This roller is held on the surface of the cam by a spring 27 stretched parallel to the racking pawl between the pawl-and a guide plate 28 on the bracket m.
  • a spring 23b mounted on the guide plate 28 tending to hold the racking pawl in engagement with the ratchet wheel.
  • the racking pawlv 23 lies in a slot in the guide plate 28 and is free to be lifted.
  • the heart shaped cam 25 and the teeth'on the ratchet wheel 21 are so cut that ateach reciprocation of the racking pawl 23 the striping drum is advanced the length of one tooth on the ratchet wheel.
  • the cams 22 on the striping pattern drum can be Inadecf any desired length, and since the main shaft 32 turns once for ievery revolution of the needle-cylinder, it
  • an idling lever 530 is mounted loose. on the shaft 19.
  • the foot of this lever overlies the main pattern drum 120 and is adapted to be lifted by the cams 501 and 502.
  • ProJecting upward from this lever to a point just below the-racking pawl 23 is an adjustf able arm 531.
  • this arm 531 is adapted to lift the racking pawl so that the platef23 will not engage any of the teeth on ratchet wheel 21.
  • This cam is lower than cam 501 with the result that the racking pawl 23 will continue advancing the ratchet wheel- 2 1.unti1 it comes to the low tooth over which it idles until it 'is desired to again make striped work This results in always starting the striped pattern at the beginning of its cycle.
  • Thisv construction pro-' vides independent idling means which can suspend rotation ofthe pattern drum 20 at any point in .the latters cycle fixed by the ratchet wheel, and also at any point in that cycle designated by the idling means.
  • a toggle actuated by theusual quadrant or segment gear pivoted on a ⁇ .shaft 76 on whichthe main pattern drum 120 is mounted (see Fig. 9).
  • This quadrant is actuated from a main drive gear (not shown) by a pitman 70, vfastened tothe quadrant by a pin 71, and is used amongst' other things to actuate -the pattern chain. It is leared to make one complete reciprocation or every four revolutions of the needle cylinder.
  • Mounted on the quadrant is a pin 77 held by a set screw 77. On the end of this pin is fastened one end of a short bar 532 with a slotted link l533 -pivoted at the other end,- ⁇ this bar and link comprising the toggle.
  • the bar 532 swings the slotted link vup and when the pin 534 engages the bottom of the slot 533a the idling lever is raised and clears lthe racking pawl from the'teeth on the ratchet wheel.
  • The. racking pawl is'thus made to idle over the ratchet wheel for one or more courses. It will be apparent thatl by adj usting the position of the dead center of the e bar 532 and link 533 in the oscillation of the .n pivot point of those elementsy the racking bar can, for instance, bemadeto advance the ratchetfwheel one tooth and miss the next,
  • each yarn passes between two convex discs d-whose convex' sides face eachotherjust before it goes to the toe of its yarn finger (see Fig. 4).
  • Each pair of discs is mounted on a pin 7), passing through the centre of the discs and the discs 4are held together by acompression springl c. -whose degree of compression can be adjusted by a thumb-nut e, mounted on the pin b.
  • the discs are held from turning by apin Set in notches in the edge of the discs.
  • this arm When this arm is swung up, the slanting face resses against the edge of one convex disc an pushing-against the pressure of the compression springe, tips thls disc away from the other, opening a space between the two discsv on one side of the pin Z.A
  • the arn being between the discs on the side vofythe'discsth'us has the drag removed from it.
  • a wlre h is hooked into the arm g at a point above the pivot center of the arm.
  • the wire passes to the rear ofthe machine, where it passes through the stud 15 on the upper end of the lever bar 14.
  • the plating .reversing mechanism operates in the followinor manner, which ever yarn is actlng as the facing yarn being designated as y1 and the yarn actlng as the backing yarn as y2.
  • the striping pattern drum is broughtv include the possibility of using any numberl of facing and backing yarns.
  • the yarn finger whose bell crank lever 17 is on a cam 22 then assumes a position away from the needle circle, while the yarn finger whose bell crank lever is 'off its cam 22 goes to a forward position.
  • the lever bar 14 which is a drawn back pulls the wire h raising the arm g into engagement with the outer disc above 1t removing the drag on the backing yarn y, (see Fig. 4).
  • the backing yarn y2 after passing between its two separated discs d goes t r finger, diagonally over the throat plate, 559 to the corner of the throat 560 and at this oint the yarn y2 turns down to the, needles )il passing under the hooks of the 'needles beyond the throat plate in the direction of rotation of the needle circle.
  • the facing yarn however is put under tension by its two discs,
  • a circular knitting machine having main and auxiliary rotating pattern control means, a ratchet wheel having teeth of two heights and a pawl,said wheel and pawl being adapted to actuate said auxiliary pattern means, in combination with anA idling lever 'for said pawl and cams of two heights on said main pattern means adapted to cause said pawl to idle over -the low teeth or all the teeth on the ratchet wheel, substantially as described.
  • main and auxiliary rotating pattern control 3 In a circular knitting machine having means, a ratchet wheel having teeth of two heights and a pawl, said wheel and pawl being adapted to actuate said auxiliary pattern means, in combination with an idling lever for said pawl and cams of two heights on said main pattern means adapted to cause said pawl to idle over the low teeth or all the teeth on the ratchet wheel, substantially as described.
  • a main ⁇ pattern control means cams thereon adapted to raise said idling lever to idling position or to such level that the pawl will commence idling at some point in the cycle fof the firstmentioned pattern control? means determined by the latter, and another idling means having continuous angulary motion bearing timed relation to the Arevolutions of the needle cylinder and adapted to raise the idling lever intermittently to idling position.
  • a ratchet wheel and pawl adapted to actuate said auxiliary pattern means, and an idling lever for said pawl, in. combination with cams on the main pattern mers adapted to actuate the idling lever to suspend rotation of the auxiliary pattern means both at the completion ofthe latters'c cle and at any point in that cycle designate by said cams.
  • a quadrant and means fastened. thereon adapted to actuate the idling lever to cause intermittent idling ofthe pawl during part of the o cle of the quadrant; substantially as descri ed. i
  • rotating pattern control Ameans land continuously moving ratchet and pawl means therefor, in combination with means having continuous angular motion independent of vsaid ratchet means adapted to intermittently hold said pawl in idling position with relation toall the teeth on said pattern control means.
  • rotating pattern control means and continuously moving ratchet and pawl means therefor in combination with means havin continuous angular motion independent o said ratchet means adapted to pass over its closest approach toV contact with said pawl and back again and thereby intermittently hold the pawl in v v idling position.
  • a knitting machine having a quadrant, rotating pattern control means and ratchet means ada ted to actuate said pattern means, in com ination with mechanism being such that the pivot point of the link with the an ular means passes dead center during a cyc e of said an ular means.
  • a knitting mac ine having a quadrant, rotating pattern control means, and a ratchet wheel and pawl adapted to actuate said pattern means
  • a toggle comprising a short bar mounted on said uadrant and a slotted link pivoted to said s ort bar', and a lever adapted to cause vintermittent idling of the pawl, the oscillation ofthe pivot point of the short bar and the slotted link bein@r adjustable ⁇ with relation to dead center o' the toggle, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US30570A 1924-08-29 1925-05-15 Pattern control means for knitting machines Expired - Lifetime US1713353A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR604251D FR604251A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1924-08-29
US30570A US1713353A (en) 1924-08-29 1925-05-15 Pattern control means for knitting machines
DES80220D DE495374C (de) 1924-08-29 1925-07-15 Mustervorrichtung fuer Rundstrickmaschinen
GB6318/26A GB248772A (en) 1924-08-29 1925-07-17 Improvements in or relating to pattern control means for knitting machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73488824A 1924-08-29 1924-08-29
US30570A US1713353A (en) 1924-08-29 1925-05-15 Pattern control means for knitting machines

Publications (1)

Publication Number Publication Date
US1713353A true US1713353A (en) 1929-05-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US30570A Expired - Lifetime US1713353A (en) 1924-08-29 1925-05-15 Pattern control means for knitting machines

Country Status (4)

Country Link
US (1) US1713353A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE495374C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR604251A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB248772A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498092A (en) * 1946-04-17 1950-02-21 Scott & Williams Inc Pattern mechanism for knitting machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498092A (en) * 1946-04-17 1950-02-21 Scott & Williams Inc Pattern mechanism for knitting machines

Also Published As

Publication number Publication date
DE495374C (de) 1930-04-07
GB248772A (en) 1926-04-29
FR604251A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1926-05-01

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