US2580620A - Knitting machine jack holder - Google Patents

Knitting machine jack holder Download PDF

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Publication number
US2580620A
US2580620A US25066A US2506648A US2580620A US 2580620 A US2580620 A US 2580620A US 25066 A US25066 A US 25066A US 2506648 A US2506648 A US 2506648A US 2580620 A US2580620 A US 2580620A
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US
United States
Prior art keywords
jacks
slurcock
spring
jack
springs
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
US25066A
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English (en)
Inventor
Vaclavik Jaroslav
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Individual
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Individual
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Filing date
Publication date
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Publication of US2580620A publication Critical patent/US2580620A/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
    • D04B11/00—Straight-bar knitting machines with fixed needles

Definitions

  • the present invention relates to Cotton knitting machines and more particularly .to a device in Cotton lknitting machines for holdingthe jacks and ,sinkers in their sinking position by means of va. spring ⁇ carrying bar or comb upon termination of the ⁇ sinking operation.
  • the primary objects of the invention are to provide a jack and spring construction in which the springs are positioned to engage a cooperating face on the jacks toward the end of the motion of the ⁇ jacks to sinker advancing position to assist the finalmovement and effectively retain the jacks and ⁇ sinkers in advanced position and further to provide means for relieving the pressure of the springs onthe jacks so as to remove any frictional drag 'between springs and jacks during the major'portion of the movement of the latter.
  • the relief -of frictional drag on the jacks is accomplished 'by providing a spring lifting member, preferably in the form of a roller carried by the slurcock carrier ⁇ and positioned so as to lift the jack springs successively in coordination with engagement of the jacks by the slurcock so that the springs are held out of engagement with jacks -until just before completion of their motion,the springsupon release dropping down on the inclined face of the projection to assist in the flnalmotion -of 4the jacksvand thereafter to retain 4them and the sinkers against retraction due to the Atension of the thread.
  • the roller is mounted on a ⁇ switch vmount and means are provided'to switch it into correct operative relation with respect tothe advancing or working face of the slurcock as each pass is completed.
  • Fig. l is a side view in section showing the spring carrying bar or comb and the jack head in position ⁇ after termination of the movement of the jack andsinker to sinking position;
  • FIG. t2 is a fragmentary plan View showing the action of the slurcock on the sinkers
  • Fig3 isa Asectional view on the line 3-3 of Eig. l and is. related to Fig. 2 to show the coordinated laction vof the spring lifting roller and the Ycarri lface o'f the slurcock; ⁇
  • Fig. 4 is a partial side view showing the inoperative position of the springs with the jacks in position ⁇ just 'prior to the back stroke of the Vcatch bar;
  • Fig. 5 is a partial side view illustrating the action of the spring lifting roller vduring the sinking operation
  • Fig. 6 is a fragmentary detail illustrating the engagement of the spring end with the jack as the latter approaches the end of its travel to sinking position.
  • the references A, B denote jacks I mounted pivotally on a rod 2 and acting for a limited time on sinkers 3.
  • Rocking movement is imparted to the jacks by means of a slurcock 4 which is fastened in a carrier 5 and travels over the backs of the jacks in the direction of the needle row.
  • Each jack is provided with a projection 6 having an inclined face I co-op-erating with the free end S of a spring 9, the other end of the spring being fastened in the spring carrying bar or comb Iii.
  • the spring carrying bar or comb is mountedin ,2. manner known per se between the side plates I i of the jack head I2.
  • Rocking movement is irnparted to the spring bar or comb I in a Inanner known per se by a lever system I3, Hl and a roller (not shown) from a cam (also not shown) on the main shaft of the machine.
  • the slurcock carrier has fastened thereon a, holder l5 carrying a lever I1 mounted pivotally about a pin IB (Fig. 3) on the holder.
  • the lever Il carries on its one end a, freely rotatable roller: I8 having a, rounded periphery which acts for a time, and successively, on the stems of the springs 9.
  • the end positions ofthe lever I'I and roller I8 are determined by a stop pin or screw I9 fastened in the holder I5.
  • the lever I1 and roller I8 are switched over automatically, before the end of the path of the slurcock 4 along the edge of the needle row is reached, by impact ⁇ of a pin 20 carried by the lever I1 against a stationary
  • the device as described operates in the following manner: l
  • the deflected jack I Prior to the sinking of a fresh row the deflected jack I is in the position A shown in dotted lines.
  • the spring bar or comb I ll occupies with its springs 9 the upper position C shown in dotted lines in Fig. 1 and in full lines in Fig. 4.
  • the slurcock carrier 5 has slidably mounted thereon the roller I8 which travels together the slurcock 4 in. a longitudinal direction shown by the arrow in Fig. 3.
  • InV a fiat knitting machine of the type de; scribed including a horizontally disposed series of sinkers, a series of upstanding jacks pivoted at th-e lower end and having a sinker engaging upper end adapted to engage and advance' the sinkers to loop-forming position, a slurcock carrier and a slurcock carried thereby for successively engaging and swinging said jacks to sinker advancing position, a.
  • a knitting machine in which the means for engaging the jack springs comprises a roller carried by the slurcock carrier in position to coordinate the engagement and disengagement of the jacksprings Athereby with the advancement'of the jacks by the slurcock. 4. A knitting machine according to claim 3 in which a switch mounting is provided for the spring engaging roller to position the samei'n correct cooperative relation with either operating face of the slurcock and means is provided for switching the roller mounting at the end of each pass of the slurcock carrier to position the same incorrect operative relation to the operating face of the Slurcock which is the working face forv the next pass. n'

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US25066A 1947-05-08 1948-05-04 Knitting machine jack holder Expired - Lifetime US2580620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS265493X 1947-05-08

Publications (1)

Publication Number Publication Date
US2580620A true US2580620A (en) 1952-01-01

Family

ID=5451619

Family Applications (1)

Application Number Title Priority Date Filing Date
US25066A Expired - Lifetime US2580620A (en) 1947-05-08 1948-05-04 Knitting machine jack holder

Country Status (4)

Country Link
US (1) US2580620A (de)
CH (1) CH265493A (de)
FR (1) FR966109A (de)
GB (1) GB676354A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722815A (en) * 1954-02-12 1955-11-08 Hosemaster Machine Company Ltd Straight bar knitting machine
US2770959A (en) * 1952-06-23 1956-11-20 Cotton Ltd W Straight bar knitting machines
US4172371A (en) * 1977-09-17 1979-10-30 William Cotton Limited Jack bar assemblies

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE964431C (de) * 1953-01-18 1957-05-23 Wirkmaschb Karl Marx Stadt Veb Flache Kulierwirkmaschine mit schwenkbar angeordnetem Federstock fuer die Schwingen
DE1045033B (de) * 1955-09-23 1958-11-27 Wirkmaschb Karl Marx Stadt Veb Flache Kulierwirkmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1817822A (en) * 1930-06-12 1931-08-04 Hofmann Alfred Knitting machine
US1830718A (en) * 1929-04-11 1931-11-03 Richter Arthur Jack motion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1830718A (en) * 1929-04-11 1931-11-03 Richter Arthur Jack motion
US1817822A (en) * 1930-06-12 1931-08-04 Hofmann Alfred Knitting machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770959A (en) * 1952-06-23 1956-11-20 Cotton Ltd W Straight bar knitting machines
US2722815A (en) * 1954-02-12 1955-11-08 Hosemaster Machine Company Ltd Straight bar knitting machine
US4172371A (en) * 1977-09-17 1979-10-30 William Cotton Limited Jack bar assemblies

Also Published As

Publication number Publication date
FR966109A (fr) 1950-10-02
CH265493A (de) 1949-12-15
GB676354A (en) 1952-07-23

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