US3774417A - Pattern mechanism for knitting machines - Google Patents

Pattern mechanism for knitting machines Download PDF

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Publication number
US3774417A
US3774417A US00221567A US3774417DA US3774417A US 3774417 A US3774417 A US 3774417A US 00221567 A US00221567 A US 00221567A US 3774417D A US3774417D A US 3774417DA US 3774417 A US3774417 A US 3774417A
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US
United States
Prior art keywords
chain
ratchet
main
pawl
auxiliary
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Expired - Lifetime
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US00221567A
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English (en)
Inventor
F Bini
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Bille SpA
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Bille SpA
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Publication date
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Publication of US3774417A publication Critical patent/US3774417A/en
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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
    • D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
    • D04B15/665—Driving-gear for programme or pattern devices

Definitions

  • the present invention relates generally to the art of knitting and more particularly to the chain control pattern mechanism of circular knitting machinesto reduce the length of the pattern chain.
  • the pattern control chain of circular knitting machines is made up of individual chain links certain of which have pattern indicia thereon in the form of cams or pins extending therefrom while otherof thechain links are plain with no pattern indicia thereon.
  • FIG. 1 is a side view, partly in section, of a portion of the frame of a circular knitting machine showing the pattern drum shaft, a main and an auxiliary ratchet on the shaft and main and auxiliary pawls to selectively advance the ratchets under pattern chain control, in accordance with the present invention.
  • FIG. 2 is a front view on an enlarged scale of a portion of FIG. 1 showing the control from the pattern chain to inactivate the main ratchet and pawl during plain knitting on the machine.
  • FIG. 3 is a front view of a portion of the link chain itself
  • FIG. 4 is a side view of the chain of FIG. 3 as disposed on the chain sprocket.
  • the main frame of the machine is indicated at 1 within which a conventional rotary shaft 3 is provided to conventionally turn the needle cylinder (not shown).
  • a conventional chain sprocket Disposed on a shaft 5 is a conventional chain sprocket and a chain 7 trained thereof as shown in outline form.
  • the chain 7 is provided with conventional radially extending cam shoulders 7A and 7B and laterally extending cam shoulders 7C, the elements 7A, 7B and 7C conventionally acting through suitable arms or feelers (not shown) to control the type of knitting on the machine.
  • laterally extending cam shoulders 7E which are disposed on those portions of the chain which also contains the cams 7A, 7B and 7C, the purpose of cams 7E will be understood as the invention is explained.
  • a lever 9 Suitably pivoted at 9B on the machine frame 1 is a lever 9 having a roller 9A at one end thereof for contact withthe cams 7E as the chain 7 is advanced.
  • the cable 11 extends through spring 118 and the other end of the cable is anchored at 11D on frame l.
  • a main ratchet 13' and an auxiliary ratchet 15 Supported on shaft 5 and operatively related to the chain sprocket to advance the same is a main ratchet 13' and an auxiliary ratchet 15, the angular pitch of the teeth of the former being twice that of the latter.
  • a rocking lever 19 Suitably pivoted on a pin 17 set in frame 1 is one end of a rocking lever 19 having a roller 19A at its other end.
  • Lever 19 is urged against a rotary cam 23 by a suitably anchored tension spring 21, the cam 23 turning in timed relation to the knitting machine rotation.
  • Pivotally mounted at 25 on lever 19 is a main pawl 27 the end 27A of which is adapted to engage the teeth of main ratchet l3 to advance the chain sprocket when permitted to do so by the pattern chain control.
  • auxiliary pawl 31 pivotally mounted at 29 on lever 19 is a second auxiliary pawl 31 the end 31A of which .is adapted to engage the teeth of auxiliary ratchet 15 to advance the chain sprocket when the main pawl 27 is inactive.
  • the movement of the former will advance the latter twice the angular distance than when the auxiliary ratchet advances the chain sprocket (with the main pawl inactive).
  • auxiliary pawl end 31A advances auxiliary ratchet 15 an angular pitch distance equal to half that of main pawl end 27A acting on main ratchet 13.
  • main pawl 27 It is desired to keep' main pawl 27 inactive so as not to advance the chain (and to let the auxiliary pawl 31 do so) when plain knitting takes place on the machine. During plain knitting no chain control is needed for the same so for this portion of the knitting the chain is formed of plain chain links. By advancing the chain sprocket by auxiliary pawl 31 during plain knitting the chain sprocket will be advanced half the distance it normally would have been moved by the main pawl 27,
  • a circular knitting machine having an indexable chain sprocket, a chain having at least one cam on said sprocket and movable therewith, a main ratchet operatively related to and movable with said sprocket, a main pawl to intermittently advance said ratchet a given distance thereby to intermittently advance said sprocket and said chain, an auxiliary ratchet operatively related to and movable with said main ratchet and said sprocket, an auxiliary pawl to intermittently advance said ratchets, said sprocket and said chain a distance less than said given distance, and means operable by said cam to prevent said main pawl from advancing said ratchet at predetermined times.
  • a circularknitting machine as in claim 1 wherein said means operable by said cam to prevent said main pawl from advancing said ratchet at predetermined times is operatively connected to said cam through a flexible cable.
  • a circular knitting machine as in claim 1 having a rocking lever and wherein said main and said auxiliary pawls are pivotally mounted upon said rocking lever for reciprocating movement therewith, the pivot point of said auxiliary pawl being located between the pivot points of said lever and of said main pawl.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US00221567A 1971-02-06 1972-01-28 Pattern mechanism for knitting machines Expired - Lifetime US3774417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT935571 1971-02-06

Publications (1)

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US3774417A true US3774417A (en) 1973-11-27

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ID=11128892

Family Applications (1)

Application Number Title Priority Date Filing Date
US00221567A Expired - Lifetime US3774417A (en) 1971-02-06 1972-01-28 Pattern mechanism for knitting machines

Country Status (5)

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US (1) US3774417A (index.php)
DD (1) DD95075A5 (index.php)
DE (1) DE2205662A1 (index.php)
ES (1) ES399208A1 (index.php)
FR (1) FR2127582A5 (index.php)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248065A (en) * 1978-09-11 1981-02-03 Brematex S.P.A Programming device for circular stocking knitting machines and the like
US4267708A (en) * 1977-12-16 1981-05-19 Macchine Tessili Circolari Matec S.P.A. Circular hosiery machine and the like, having simplified program control means
US4413483A (en) * 1979-10-01 1983-11-08 Bentley Engineering Company Limited Control mechanism for circular knitting machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683540A (en) * 1928-09-04 Island
US2243277A (en) * 1940-01-05 1941-05-27 Rk Leblond Machine Tool Co Chip control means
US2436468A (en) * 1946-02-21 1948-02-24 Scott & Williams Inc Pattern mechanism for knitting machines
US2841970A (en) * 1955-06-24 1958-07-08 Wildt & Co Ltd Control mechanisms for knitting machines
US2927447A (en) * 1956-02-01 1960-03-08 Fidelity Machine Company Inc Pattern drum indexing mechanism
US3054281A (en) * 1961-01-18 1962-09-18 Acme Mccrary Corp Apparatus for varying the number of courses in knitted articles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1683540A (en) * 1928-09-04 Island
US2243277A (en) * 1940-01-05 1941-05-27 Rk Leblond Machine Tool Co Chip control means
US2436468A (en) * 1946-02-21 1948-02-24 Scott & Williams Inc Pattern mechanism for knitting machines
US2841970A (en) * 1955-06-24 1958-07-08 Wildt & Co Ltd Control mechanisms for knitting machines
US2927447A (en) * 1956-02-01 1960-03-08 Fidelity Machine Company Inc Pattern drum indexing mechanism
US3054281A (en) * 1961-01-18 1962-09-18 Acme Mccrary Corp Apparatus for varying the number of courses in knitted articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267708A (en) * 1977-12-16 1981-05-19 Macchine Tessili Circolari Matec S.P.A. Circular hosiery machine and the like, having simplified program control means
US4248065A (en) * 1978-09-11 1981-02-03 Brematex S.P.A Programming device for circular stocking knitting machines and the like
US4413483A (en) * 1979-10-01 1983-11-08 Bentley Engineering Company Limited Control mechanism for circular knitting machine

Also Published As

Publication number Publication date
ES399208A1 (es) 1974-12-01
FR2127582A5 (index.php) 1972-10-13
DE2205662A1 (de) 1972-08-24
DD95075A5 (index.php) 1973-01-12

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