US3802358A - Improvement for knitted fabric linking machine - Google Patents

Improvement for knitted fabric linking machine Download PDF

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Publication number
US3802358A
US3802358A US00259265A US25926572A US3802358A US 3802358 A US3802358 A US 3802358A US 00259265 A US00259265 A US 00259265A US 25926572 A US25926572 A US 25926572A US 3802358 A US3802358 A US 3802358A
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US
United States
Prior art keywords
work cylinder
sleeve member
cylinder
linking machine
machine
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Expired - Lifetime
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US00259265A
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English (en)
Inventor
L Anfruns
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Individual
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Individual
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Publication date
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B7/00—Linking machines, e.g. for joining knitted fabrics

Definitions

  • the present invention obviates these difficulties, and embodies a hollow cylindrical work holder having an axially extending set of points for engaging the fabric loops to be joined together.
  • the cylinder is mounted in a sleeve assembly having an inner concentric bearing member that rotatably supports the work cylinder through a friction fit arrangement.
  • the sleeve assembly further includes pawl means for engaging ratchet teeth on the cylinder to rotate the latter in a step-by-step manner, means for obtaining the quick release of the cylinder from the sleeve, and means for enabling the sleeve and cylinder to be automatically pivoted away from the machine needles upon the completion of each joining cycle.
  • the cylinderv permits the two garment sections being joined together to extend axially through the center of the annular opening through the cylinder, with the loops of both sections strung over a single set of points on the cylinder.
  • the invention therefore makes for more efficient production since multiple cylinders can be preloaded with garment sections to be joined and replaced quickly in the machine after each looping or sewing cycle, and produces a better seam since the tensions therwise introduced to the garment sections with the prior art discs are no longer present.
  • FIG. 1 is an elevational side view of the work cylinder and sleeve assembly of this invention in position for a sewing operation;
  • FIG. 2 is an end elevation view of the work cylinder and sleeve assembly, showing the pawl and ratchet arrangement
  • FIG. 3 is a partial sectional view of the work cylinder with the garment sections to be joined thereon;
  • FIG. 4 is a view similar to FIG. 1, with the sleeve and cylinder pivoted; and I FIG. 5 is a partial sectional view of the work cylinder and sleeve showing the cylinder being released from the sleeve after the sewing'operation.
  • the work cylinder 1 of this invention is provided at its front end 2 with points 6 for receiving the individual loops of the sections 3, 4 of a circular knitted garment, such as a stocking having toe pieces 5.
  • the cylinder is provided with ratchet teeth 11 the purpose of which will be explained below, and a tapered body portion la which decreases slightly in diameter towards the points 6.
  • the work cylinder 1 fits snugly within a cylinder supporting sleeve assembly 7 which, as shown in FIG. 5 includes an inner, concentric cylinder engaging sleeve member 8b rotatably supported with respect to the outer sleeve member 8a by means of roller bearings 8f or the equivalent.
  • the inner sleeve member 812 includes an inner surface 8g tapered to conform with the outer peripheral surface la of cylinder 1 whereby firm insertion of cylinder 1 into sleeve assembly 7 results in a close friction fit between the cylinder and inner sleeve member 8b, with the cylinder 1 then being rotatably supported by means of bearing member 8b with respect to outer sleeve member 8a.
  • the sleeve assembly 7 further includes a rotatable work cylinder indexing ring 70 which carries a work cylinder driving pawl 9 (FIG. '2).
  • a work cylinder noback pawl 10 is carried by outer sleeve member 8a, and a spring 10a connects the pawls for biasing them into engagement withthe ratchet teeth 11 of cylinder 1 when the cylinder and sleeve are assembled as shown in FIG. 1, for example.
  • a quick release means for separating cylinder 1 from sleeve member 8 at the end of a sewing cycle, the quick release means including a threaded ring 8c received in ring 7a and having a handle 8d attached thereto for enabling an operator to back the ring 80 our of ring 7 to force the cylinder 1 out of engagement with inner sleeve member 8b by reason of the mutual engagement of the ring 8: and cylinder 1 in the area indicated at 80 when ring is backed out of ring 7a.
  • the sleeve assembly 7 is mounted for pivotal movement on member 14 of sewing machine 20 (FIG. 2) whereby pivotal movement of the sleeve assembly positioning rod or lever arm 14b about axis 14a causes corresponding pivotal movement of sleeve assembly 7 and cylinder 1 about the same axis, as shown in FIG. 4.
  • a cam disc 13 having a female cam groove 15 and serrations 13a on its periphery is connected to rotate synchronously with the shaft 12 connected to the sewing machine needles (not shown) which extend into the upper area of points 6 when the machine is in the FIG. 1 operating mode.
  • cam groove 15 receives a cam follower on the opposite end of lever 14b from axis 14a in a conventional manner whereby rotation of cam disc 13 during the sewing operation causes the lever 14b to pivot between the positions illustrated in FIGS. 1 and 4.
  • a tripper or tab 23 on cam disc 13 engages microswitch 22 each revolution of the disc to stop the operation of the needles while the cylinder 1 and sleeve assembly 7 are pivoted in the position of FIG. 4.
  • the rod 16b is hinged centrally of its length to permit pivotal movement of sleeve assembly 7 without mechanical interference in the cylinder indexing linkage.
  • the sewing machine needles perform the stitching operation on the loops of the knitted garment sections to be joined in the area of points 6.
  • a linking machine for joining together circular knitted garment sections, the improvement comprising an annular work cylinder having a single, axially extending annular row of points thereon for engaging the loops of a pair of circular knitted garment sections to be joined together by sewing, the said work cylinder supporting at least portions of each of the garment sections to be joined substantially concentrically therein during the linking operation.
  • a linking machine including sewing needles for stitching together the loops of circular knitted garment sections to be joined
  • the improvement comprising an annular work cylinder having points for engaging the loops of the garment sections to be joined; the said work cylinder supporting at least portions of each of the garment sections to be joined substantially concentrically therewithin during the stitching operation, a pivotally mounted support means for mounting said work cylinder on said machine for both rotational motion about its longitudinal axis and pivotal movement about its transverse axis; and actuating means whereby said work cylinder can be pivoted about its transverse axis from a position where the points lie in proximity to the stitching area of the machine to a position where the points are inclined away from the stitching area.
  • said work cylinder support means further comprises a sleeve assembly for coaxially receiving and supporting said work cylinder within said assembly, said sleeve assembly comprising an outer sleeve member and a work cylinder engaging annular inner sleeve member, said inner sleeve member extending coaxially of said outer sleeve member and being pivotally supported for rotary motion about its longitudinal axis with respect to said outer sleeve member, said work cylinder extending axially through said inner sleeve member, said inner sleeve member further including means for engaging said work cylinder whereby the said work cylinder is supported for rotary motion with respect to said outer sleeve member, said outer sleeve member normally being held fixed against rotary motion on said linking machine.
  • said work cylinder includes a conical tapered outer peripheral area, the tapered periphery converging towards the points of the work cylinder, and said inner sleeve means for engaging said work cylinder includes an inner tapered surface corresponding to the tapered periphery of the work cylinder, the inner sleeve member receiving and engaging the work cylinder through an interference friction fit.
  • said work cylinder includes an annular row of ratchet teeth
  • said sleeve assembly further includes a work cylinder driving ring and a pawl connected thereto, said pawl engaging said ratchet teeth for causing intermittent, unidirectional rotary motion of said work cylinder when said pawl is driven in an oscillating manner through said driving ring, and means operating synchronously with the linking machine needles for actuating said driving ring in an oscillating manner.
  • said sleeve assembly further includes a work cylinder quick release means for enabling the work cylinder to be positively driven axially out of engagement with said inner sleeve member.
  • said actuating means for said work cylinder support means comprises a lever arm driven by a cam and follower means, the cam and follower means being driven synchronously with the linking machine needles whereby said lever arm is driven to cause said pivotal movement of said support means away from the needles once per linking cycle after each garment is completely joined.
  • the linking machine of claim 7 further including a microswitch means actuated by trip means associated with said cam and follower means, said microswitch being tripped to cause cessation of operation of the linking meachine needles when said work cylinder is pivoted away from the stitching area.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Knitting Machines (AREA)
  • Treatment Of Fiber Materials (AREA)
US00259265A 1971-06-08 1972-06-02 Improvement for knitted fabric linking machine Expired - Lifetime US3802358A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES392466A ES392466A1 (es) 1971-06-08 1971-06-08 Perfeccionamientos en la construccion de maquinas remalla- doras de prendas de genero de punto.

Publications (1)

Publication Number Publication Date
US3802358A true US3802358A (en) 1974-04-09

Family

ID=8458622

Family Applications (1)

Application Number Title Priority Date Filing Date
US00259265A Expired - Lifetime US3802358A (en) 1971-06-08 1972-06-02 Improvement for knitted fabric linking machine

Country Status (19)

Country Link
US (1) US3802358A (fr)
AR (1) AR196741A1 (fr)
AT (1) AT321081B (fr)
BE (1) BE784542A (fr)
BR (1) BR7203658D0 (fr)
CH (1) CH554438A (fr)
CS (1) CS161658B2 (fr)
DE (1) DE2227756A1 (fr)
ES (1) ES392466A1 (fr)
FR (1) FR2140468A1 (fr)
GB (1) GB1364611A (fr)
IL (1) IL39587A (fr)
IT (1) IT959044B (fr)
LU (1) LU65470A1 (fr)
NL (1) NL7207709A (fr)
PL (1) PL82676B1 (fr)
RO (1) RO68300A (fr)
SE (1) SE375563B (fr)
ZA (1) ZA723906B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111020891A (zh) * 2019-11-25 2020-04-17 杰克缝纫机股份有限公司 缝纫机、送料切换装置、送料切换控制系统和控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1026808A (en) * 1909-06-17 1912-05-21 Firm Of Julius Koehler Looping-machine.
US1966377A (en) * 1931-12-23 1934-07-10 Southern Textlle Machinery Com Looper machine
US2264234A (en) * 1939-01-12 1941-11-25 Walter J Horn Sewing or looping machine
US2862464A (en) * 1954-05-20 1958-12-02 Darandik Wilhelm Circular linking machine
US3292563A (en) * 1962-02-10 1966-12-20 Matthews & Birkhamshaw Ltd Linking machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1026808A (en) * 1909-06-17 1912-05-21 Firm Of Julius Koehler Looping-machine.
US1966377A (en) * 1931-12-23 1934-07-10 Southern Textlle Machinery Com Looper machine
US2264234A (en) * 1939-01-12 1941-11-25 Walter J Horn Sewing or looping machine
US2862464A (en) * 1954-05-20 1958-12-02 Darandik Wilhelm Circular linking machine
US3292563A (en) * 1962-02-10 1966-12-20 Matthews & Birkhamshaw Ltd Linking machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111020891A (zh) * 2019-11-25 2020-04-17 杰克缝纫机股份有限公司 缝纫机、送料切换装置、送料切换控制系统和控制方法

Also Published As

Publication number Publication date
BR7203658D0 (pt) 1973-06-07
AR196741A1 (es) 1974-02-19
DE2227756A1 (de) 1973-01-04
GB1364611A (en) 1974-08-21
BE784542A (fr) 1972-10-02
PL82676B1 (en) 1975-10-31
SE375563B (fr) 1975-04-21
IL39587A (en) 1975-05-22
AT321081B (de) 1975-03-10
ES392466A1 (es) 1973-07-16
IL39587A0 (en) 1972-08-30
FR2140468A1 (fr) 1973-01-19
IT959044B (it) 1973-11-10
RO68300A (fr) 1982-04-12
CS161658B2 (fr) 1975-06-10
CH554438A (fr) 1974-09-30
LU65470A1 (fr) 1972-10-05
ZA723906B (en) 1974-04-24
NL7207709A (fr) 1972-12-12

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