US3888094A - Drive unit for operating and cutting out the additional thread supplies and associated thread guides on dual cylinder circular knitting machines - Google Patents

Drive unit for operating and cutting out the additional thread supplies and associated thread guides on dual cylinder circular knitting machines Download PDF

Info

Publication number
US3888094A
US3888094A US431091A US43109174A US3888094A US 3888094 A US3888094 A US 3888094A US 431091 A US431091 A US 431091A US 43109174 A US43109174 A US 43109174A US 3888094 A US3888094 A US 3888094A
Authority
US
United States
Prior art keywords
gear wheel
levers
disc
annular element
tooth
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
US431091A
Other languages
English (en)
Inventor
Francesco Lonati
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.)
Construzioni Meccaniche Lonati Di Lonati Francesco & Figli (ettore Fausto Tiberio)snc
LONATI COST MECC
Original Assignee
LONATI COST MECC
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 LONATI COST MECC filed Critical LONATI COST MECC
Application granted granted Critical
Publication of US3888094A publication Critical patent/US3888094A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/54—Thread guides
    • D04B15/58—Thread guides for circular knitting machines; Thread-changing devices

Definitions

  • ABSTRACT Drive unit for dual cylinder circular knitting machines, The unit comprises a shaped in juxtaposed relationship with a gear wheel rotably restrained with the rotating members of the dual needle cylinder. A tooth is formed on the shaped disc.
  • a rocking lever is pivoted to the shaped disc and carries small jacks acting and stepwise rotably driving the control cams for operating and cutting out the additional thread supplies and associated thread guides of the circular knitting machines to which said unit is applied.
  • This invention relates to a drive unit for connecting and disconnecting the additional thread supplies and associated thread guides on dual cylinder, circular knitting machines of the type having two or more supplies.
  • a device comprising a gear rotating in synchronism with the dual cylinder of the machine, on one face of which a rocking lever is pivoted for selectively engaging two angularly spaced apart teeth on a disc carrying a displacement connecting rod for a set of levers cooperating with cam discs for operating and/or cutting out the additional thread supplies and thread guides associated therewith.
  • the connecting rod disc is engaged by braking means for stabilizing its position and preventing any angular displacement thereof both in forward and rearward directions during the change of operation for the rocking lever from one tooth to the other of said disc.
  • braking means for stabilizing its position and preventing any angular displacement thereof both in forward and rearward directions during the change of operation for the rocking lever from one tooth to the other of said disc.
  • this conventional device there are however such disadvantages restricting its functionality and efficiency.
  • a brake there is in said device a high possibility of phase displacement for the whole assembly of the machine supply members relative to the dual cylinder, thereby resulting in an alteration of the regular sequence of knitting with possible relevant failures in the affected members.
  • the brake as made at present is of poor durability and requires frequent adjustments to its braking force, other-wise completely failing in its effectiveness.
  • Still further objects are to provide a unit, as above specified, which is of simple design and construction, reliable and unchangeable in time and capable of being mounted on dual cylinder machines also for replacing the conventional units, thereby without altering or modifying the structure of the machine.
  • a drive unit for operating and cutting out the additional thread supplies and associated thread guides on dual cylinder, circular knitting machines comprising a gear wheel rotably restrained to a drive wheelwork for the dual cylinder, a disc idly mounted on the shaft of said gear wheel, having connected thereto the small end of a connecting rod which in turn is restrained to a plurality of levers acting on a set of cam discs for controlling the additional thread supplies and associated thread guides, is characterized in that on the face of said idle disc facing said gear wheel an annular element is secured, having at least one peripheral tooth, selectively engaging two rocking spring levers pivoted to said gear wheel for rotably restraining said connecting rod disc with said gear wheel.
  • FIG. I is a front schematic view showing a portion of a machine carrying thereon a drive unit according to the present invention, the elements comprising the unit being shown at the position corrisponding to the release of a rocking lever which is part of the unit;
  • FIG. 2 is a side view of the unit shown in FIG. 1;
  • FIGS. 3 and 4 are two fragmentary sectional views, as taken along line A-A of FIG. 2, showing the positions of a gear wheel relative to an idle connecting rod disc as said disc is driven by first and second rocking levers, respectively.
  • the drive unit comprises a gear wheel 1 carried on a shaft 2 (fast with a stationary frame 20) and driven in the direction of arrow F of FIG. 1 by the drive wheelwork 3 for rotation of the dual needle cylinder (not shown) of the circular knitting machine.
  • a disc 4 is idly carried on the shaft 2 of said gear wheel I, to which the small end of a connecting rod 6 is restrained on a pin 5, the opposite end of the connecting rod 6 being engaged on a pin 7, to which a plurality of thrust levers 8 are restrained and act upon cam discs 9 carried on a pin 21 and in a per se known manner designed to control through members, also per se well known and therefore not shown for simplicity, the operation of the additional supply or supplies of the machine and the thread guides associated with said additional supplies.
  • cam set 9 the members firmly secured thereto, and the assembly of the operating levers 8 for said cams are of a per se well known structure, whereby a detailed description thereof will not be given herein.
  • annular element 10 On the inner face of said disc 4, and between the latter and the gear wheel I, an annular element 10 is at tached and has thereon a peripheral tooth or notch I 1, two rocking levers 12, 13 selectively cooperating therewith and being rotable on pins carried by said gear wheel 1.
  • Each of the levers 12, 13 are connected to a spring 14 and 15, respectively, for maintaining one end of said lever adhering to the periphery of the annular element 10, so as to engage said tooth 11 when meeting the same and rotably drive the disc 4 and connecting rod 6.
  • rocking levers l2, 13 are angularly spaced from each other on the gear wheel 1 and, adjacent the travel or path thereof, an element I6 is provided as movable in either direction on a fixed spoke 22 and positionable upon command at either levers l2, 13 to cause the rotation on the pin carrying each of the levers, when required to be released from the tooth of the annular element 10.
  • two auxiliary notches l7, 18 are formed on said element 10, the notches being oriented in opposite direction of that of said tooth 11, a spring pawl 19 engaging thereon, which is also piv oted to the gear wheel 1 and having the purpose of preventing any uncontrolled movements of said disc 4 and connecting rod 6.
  • the described unit is completely avoid of the conventional brake, and in said unit the drive for the disc 4 and connecting rod 6 is feasible by the two rocking levers l2, l3 selectively acting on the same tooth ll of the annular element 10.
  • the disc 4 and connecting rod 6 are rotably driven according to an accurate angular orientation relative to the gear wheel 1 and accordingly with respect to the dual needle cylinder of the machine to which said wheel 1 is restrained, and this to control predetermined knitting operations.
  • said disc 4 and connecting rod 6 are driven by the second lever 13 (see FIG. 4), said disc and gear wheel 1 will take instead a different mutual angular positioning, with controls corresponding thereto for accomplishing further operations in other areas of the dual needle cylinder.
  • the two rocking levers l2, l3 similarly control, although at different times, the disc 4 and connecting rod 6 so as to provide two different driving positions for said connecting rod 6 relative to the gear wheel 1 and needle cylinder, thereby performing two different controls for the cam disc unit in connecting and disconnecting the additional supplies and associated thread guides to provide the possible operation thereof at different areas on the dual cylinder of the circular knitting machine.
  • a drive unit for operating and cutting out the additional supplies and associated thread guides on dual cylinder, circular knitting machines comprising a gear wheel rotably restrained to a wheelwork controlling said dual cylinder, and a disc idly carried on the shaft of said gear wheel, thereto being connected the small end of a connecting rod which in turn is restrained to a plurality of levers acting on a set of cam discs control ling the additional thread supplies and associated thread guides, wherein on said disc and connecting rod facing said gear wheel there is secured an annular element having at least one peripheral tooth, and on the face adjacent said gear wheel at least two driving rocking levers are pivoted, these levers being angularly spaced apart and selectively acting on said tooth of said annular element to restrain said annular element to said gear wheel, each of said levers being connected to a spring constantly retaining it adherent to the periphery of said annular element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US431091A 1973-02-08 1974-01-07 Drive unit for operating and cutting out the additional thread supplies and associated thread guides on dual cylinder circular knitting machines Expired - Lifetime US3888094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5107/73A IT976501B (it) 1973-02-08 1973-02-08 Gruppo di comando dell attivazione e dell ensclusione delle alimenta zioni supplementari e dei relati vi guidafili in macchine circola ri per calze a doppio cilindro

Publications (1)

Publication Number Publication Date
US3888094A true US3888094A (en) 1975-06-10

Family

ID=11117615

Family Applications (1)

Application Number Title Priority Date Filing Date
US431091A Expired - Lifetime US3888094A (en) 1973-02-08 1974-01-07 Drive unit for operating and cutting out the additional thread supplies and associated thread guides on dual cylinder circular knitting machines

Country Status (5)

Country Link
US (1) US3888094A (de)
CS (1) CS162645B2 (de)
DE (1) DE2401257A1 (de)
GB (1) GB1433956A (de)
IT (1) IT976501B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844903A1 (de) * 1977-10-21 1979-04-26 Lonati Cost Mecc Steuereinrichtung fuer fadenzufuehr- und wechselvorrichtungen bei rundstrickmaschinen, insbesondere doppelzylinder- strumpfrundstrickmaschinen
CN102373569A (zh) * 2011-09-25 2012-03-14 冯发泉 多功能剪纱器
CN104911800A (zh) * 2015-06-05 2015-09-16 佛山市晋新机械有限公司 一种变色头及其角度调整固定装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828617A (en) * 1955-05-18 1958-04-01 Burdett Henry Sidney Circular knitting machines
US2959040A (en) * 1957-08-23 1960-11-08 Wildt & Co Ltd Circular knitting machines of the superimposed needle cylinder type
US3108461A (en) * 1963-10-29 Zahradka

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108461A (en) * 1963-10-29 Zahradka
US2828617A (en) * 1955-05-18 1958-04-01 Burdett Henry Sidney Circular knitting machines
US2959040A (en) * 1957-08-23 1960-11-08 Wildt & Co Ltd Circular knitting machines of the superimposed needle cylinder type

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844903A1 (de) * 1977-10-21 1979-04-26 Lonati Cost Mecc Steuereinrichtung fuer fadenzufuehr- und wechselvorrichtungen bei rundstrickmaschinen, insbesondere doppelzylinder- strumpfrundstrickmaschinen
US4233826A (en) * 1977-10-21 1980-11-18 Construzioni Meccaniche Lonati S.P.A. Control device for striper units in circular knitting machines
CN102373569A (zh) * 2011-09-25 2012-03-14 冯发泉 多功能剪纱器
CN102373569B (zh) * 2011-09-25 2013-05-08 冯发泉 多功能剪纱器
CN104911800A (zh) * 2015-06-05 2015-09-16 佛山市晋新机械有限公司 一种变色头及其角度调整固定装置

Also Published As

Publication number Publication date
DE2401257A1 (de) 1974-08-15
IT976501B (it) 1974-09-10
CS162645B2 (de) 1975-07-15
GB1433956A (en) 1976-04-28

Similar Documents

Publication Publication Date Title
US3888094A (en) Drive unit for operating and cutting out the additional thread supplies and associated thread guides on dual cylinder circular knitting machines
US3587253A (en) Circular knitting machines
US3086378A (en) Control and braking device for pincarrying drums of circular knitting machines and the like
US3306118A (en) Process timers
US3783640A (en) Mechanism for the control of reversible step-by-step rotation of selector drums of circular knitting machines
US3101601A (en) Operating mechanism for the yarn carriers of circular knitting machines
US2382757A (en) Pattern drum operating mechanism
US4233826A (en) Control device for striper units in circular knitting machines
US2534724A (en) Controller
US1160208A (en) Controlling device for use in sheet-feeding and like machines.
US3350901A (en) Guide bar lapping mechanism for warp knitting machines
US3485064A (en) Pattern mechanism for knitting machines
US3218830A (en) Racking means for circular knitting machines
US1236770A (en) Striping attachment for knitting-machines.
US3126851A (en) Anti-rebound device for sewing machines
US2868002A (en) Control device for circular knitting machines
US3766753A (en) Control apparatus for resetting pattern drums
US3406541A (en) Yarn feed indexing apparatus
US4069689A (en) Racking mechanism for double-cylinder revolving cam-box circular knitting machine
US3911697A (en) Pattern device for circular knitting machines
GB1432958A (de)
US3384211A (en) Cycle control mechanism for business machines
US3472047A (en) Thread alternating device for flat knitting machines
US3487661A (en) Safety stop mechanism for straight bar knitting machine
US1381034A (en) Jacquard mechanism