US3857345A - Variable eccentric and locating plate - Google Patents

Variable eccentric and locating plate Download PDF

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Publication number
US3857345A
US3857345A US00439481A US43948174A US3857345A US 3857345 A US3857345 A US 3857345A US 00439481 A US00439481 A US 00439481A US 43948174 A US43948174 A US 43948174A US 3857345 A US3857345 A US 3857345A
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US
United States
Prior art keywords
eccentric
needle bar
flange
flanges
locating
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
US00439481A
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English (en)
Inventor
J Higgins
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.)
SPENCER WRIGHT INDUSTRIES Inc A CORP OF TENNESSEE
Singer Co
Original Assignee
Singer Co
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 GB6025172A priority Critical patent/GB1417130A/en
Priority to CA187,521A priority patent/CA985574A/en
Priority to AU63583/73A priority patent/AU473654B2/en
Priority to JP48141761A priority patent/JPS49101165A/ja
Priority to NL7317494A priority patent/NL7317494A/xx
Priority to FR7346195A priority patent/FR2212836A5/fr
Priority to DE2364577A priority patent/DE2364577A1/de
Priority to BE139351A priority patent/BE809190A/xx
Application filed by Singer Co filed Critical Singer Co
Priority to US00439481A priority patent/US3857345A/en
Application granted granted Critical
Publication of US3857345A publication Critical patent/US3857345A/en
Assigned to SPENCER WRIGHT INDUSTRIES, INC., A CORP OF TENNESSEE reassignment SPENCER WRIGHT INDUSTRIES, INC., A CORP OF TENNESSEE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FIRST NATIONAL BANK OF BOSTON, THE A NATIONAL BANKING ASSOCIATION, FNB FINACIAL COMPANY A MASSACHUSETTS BUSINESS TRUST
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C15/00—Making pile fabrics or articles having similar surface features by inserting loops into a base material
    • D05C15/04—Tufting
    • D05C15/08—Tufting machines
    • D05C15/16—Arrangements or devices for manipulating threads
    • D05C15/20—Arrangements or devices, e.g. needles, for inserting loops; Driving mechanisms therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/20—Crank gearings; Eccentric gearings with adjustment of throw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/211—Eccentric
    • Y10T74/2111—Plural, movable relative to each other [including ball[s]]
    • Y10T74/2112—Concentric

Definitions

  • the present invention relates to tufting machines capable of producing articles such as pile carpets. It is standard-on such machines to incorporate the capability of varying needle bar stroke in order to effect a variation in pile depth as may be desired. It has also been conventional to utilize a double eccentric mechanism to effectuate such stroke variation.
  • the use of double eccentric mechanisms to regulate the stroke of a reciprocable member, such as a knitting needle, has been known heretofore.
  • U.S. Pat. No. 2,459,587 issued Jan. 18, 1949 discloses the use of such a double eccentric mechanism to vary the stroke of a knitting needle employed in the mending of hosiery.
  • I949 illustrates the use of a double eccentric mechanism to provide for variation in the stroke of a punch press.
  • tufting art it has heretofore been necessary to make relatively complicated and time consuming adjustments including in some cases adjustments in the bed plate and looper bar mechanism to accomodate changes in needle bar stroke. Any such changes in looper bar mechanism setting, usually also occasioning a change in timing, were extremely time consuming and necessarily resulted in substantial down or inoperative time for the machine.
  • a tufting machine having a drive shaft, a connecting rod operably connected thereto for reciprocating movement, a needle bar drivable reciprocably by said connecting rod, and double eccentric means for regulating the stroke of said needle bar
  • the improvement comprising a first eccentric rotatable on said drive shaft into any one of a plurality of preselected positions and a second eccentric carried by said first eccentric and rotatable into any one ofa plurality of preselected positions relative to said first eccentric to thereby establish the desired stroke for said needle bar, means for locking said first and second eccentrics in fixed relation to each other and in preselected position relative to said drive shaft, and adjusting means associated with said connecting rod for maintaining the bottom dead center position of said needle bar at a predetermined position regardless of the variation in stroke effected for said needle bar.
  • FIG. 1 is a side elevation of a variable eccentric assembly and an adjusting device in sectional view
  • FIG. 2 is an end elevation in the direction of the DETAILED DESCRIPTION OF THE INVENTION
  • a'tufting machine indicated generally by the reference numeral 100 has a variable eccentric assembly 101 for imparting an adjustable stroke to a needle bar 102 of the tufting machine.
  • the eccentric assembly includes a locating flange 104 keyed to a drive shaft 106 of the tufting machine, a first or inner eccentric 108 journa'lled on the shaft and rotatable into any one of a plurality of preselected positions, and a second or outer eccentric 110 journalled on the inner eccentric 108 and rotatable into any one of a plurality of preselected positions relative to the first eccentric.
  • outer eccentric 110 has a se-v curing flange 112 abutting the locating flange 104.
  • a screw 114 is passed through a plain bore 116 on the locating flange 104 to connect with a threaded bore 118 in the securing flange 112, thus locking the outer eccentric relative to the shaft.
  • a plurality of such plain bores 116 and threaded bores 118 are provided on the locating and the securing flanges respectively but only one pair of these bores are in register in each preselected position.
  • the inner and the outer eccentrics 108 and 110 are provided with annular flanges 120 and 122 respectively at the ends thereof remote from the locating plate 104.
  • the circumferential face of the flange 120 is provided with numbered locating marks, corresponding to the marks on the locating flange 104 and the flange 122 is provided with a reference mark so that the relative positions of the eccentrics and thus the stroke of the needle bar may be noted.
  • a screw 124 is passed through a plain bore 126 on the flange 120 into a registering threaded bore 128 in the flange 122 and thus the flanges are connected together.
  • One end 130, i.e., the big end, of a connecting rod 132 is rotatably mounted on bearings 134 on the outer eccentric, the other end 136 i.e., the small end of the connecting rod, being pivotably connected with the needle bar 102 by way of an adjusting device 138 for adjusting the bottom dead centre position of the needle bar to any desired position.
  • This device is thus used to ensure that for all lengths of stroke the bottom dead centre position of the needle may be maintained constant.
  • the adjusting device 138 comprises a clevis 140 attached to the needle bar 102 by means of a push rod 142.
  • the clevis has in each of its opposed parallel limbs a vertical slot to accommodate a pivot bolt 144 passing therethrough.
  • the small end of the connecting rod pivots on bearings 146 about the bolt 144, and nuts 148 are provided to prevent the bolt from moving in an axial direction.
  • locating plates 150 are provided on either side of the clevis, the bolt 144 passing through a close fitting aperture in each of the plates.
  • the plates 150 are each provided with a corresponding arrangement of grooves 152 running both horizontally and vertically across two opposite end faces thereof, the plates being reversible.
  • Each pair of corresponding selected grooves on the plates 150 is dimensioned to receive a horizontal raised rib 154 provided on each of the outer faces of the parallel limbs of the clevis. In this manner the pivot bolt 144 can be moved further from or closer to the needle bar 102, thus adjusting the bottom dead centre position of the needle bar.
  • the grooves are each marked with an identifying number so that the correct groove may be selected for a given length of stroke to maintain constant the bottom dead centre position of the needle bar.
  • the machine is stopped with the needles at the bottom of the stroke and the screws 114 and 124 are removed.
  • a tommy bar (not shown) is placed into one of a plurality of holes 156 located around the circumferential face of the flange of the outer eccentric, and the inner and/or the outer eccentric is rotated until the required locating mark, indicating the length of stroke on said flange 120, is aligned with the reference mark on the flange 122.
  • the eccentrics 103 and 110 are secured together by means of the screw 124.
  • the inner and the outer eccentrics are rotated together until the locating mark on the locating flange 104 corresponding to said locating mark on the inner eccentric is aligned with the reference mark on the securing flange 112. This ensures that there is no change in timing of the needle bar with respect to the shaft.
  • the securing flange 112 is then locked to the locating flange 104 by means of the screw 114.
  • the bolt 144 is loosened or removed and the selected pair of corresponding grooves are each positioned to receive the respective rib.
  • the groove identifying numbers on the locating plates 150 are chosen such that if the bottom dead centre position was previously correct, then it will be sufficient to maintain the same difference between the groove number and the stroke length locating mark number as was previously present.
  • setting the groove number to a lower number e.g., 5. to 4 will lower the position by l/32 inch, 5 to 3 will lower by l/l6 inch and vice versa.
  • the locating plates 150 have a maximum of two horizontal and two vertical grooves per face and the groove numbers are located at the edge nearest the clevis, the lowest number referring to the bottom groove.
  • the stroke of the individual push rods 142 should be adjusted one eccentric assembly and set of locating plates at a time, in order to assist in maintenance of needle pick up position.
  • the pick up position When adjusting the pick up position, it may be possible to make a small adjustment by releasing several sets of locating plates 150 and using needle bar deflection to enable the new pick up location to be set.
  • the needle bar may be supported by chocks while all locating plates 150 are released and re-set.
  • a tufting machine having a drive shaft, a connecting rod operably connected thereto for reciprocat ing movement, a needle bar drivable reciprocably by said connecting rod,'and double eccentric means for regulating the stroke of said needle bar, the improvement comprising a first eccentric rotatable on said drive shaft into any one of a plurality of preselected positions and a second eccentric carried by said first eccentric and rotatable into any one of a plurality of preselected positions relative to said first eccentric to thereby establish the desired stroke for said needle bar,
  • said adjusting means comprises a clevis having in each of its opposed parallel limbs a slot aligned with the longitudinal axis of the respective limb, the outermost face of each of said limbs being provided with a rasiedrib extending perpendicularly to the longitudinal axis of the respective limb, a pair of removable locating plates being provided for positioning on the respective outermost faces of the clevis, each of said plates having an arrangement of grooves therein dimensionedfor selective reception of the respective rib and each having an aperture therethrough, a pivot bolt extending between the plates through said slots in the clevis, said bolt being operatively connected to one of said connecting rod and needle bar, and the clevis being thus fixedly secured to one of said needle bar and connecting rod.
  • a tufting machine wherein a radially projecting annular locating flange is keyed to said drive shaft, one of said eccentrics has a radially projecting annular flange and the other of said eccentrics has two radially projecting annular flanges, one of said flanges on said other eccentric abuts the said locating flange, the second of the flanges on said other eccentric abuts the flange on said one eccentric, locating and reference marks being provided on the circumferential faces of said flanges to indicate the preselected position of said other eccentric relative to said drive gether by means of a threaded member engageable in said registering bores.
  • a tufting machine according to claim 3, wherein said one eccentric is said first eccentric and said other eccentric is said second eccentric.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Knitting Machines (AREA)
US00439481A 1972-12-30 1974-02-14 Variable eccentric and locating plate Expired - Lifetime US3857345A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB6025172A GB1417130A (en) 1972-12-30 1972-12-30 Tufting machines
CA187,521A CA985574A (en) 1972-12-30 1973-12-06 Variable eccentric and locating plate
AU63583/73A AU473654B2 (en) 1972-12-30 1973-12-13 Tufting machines
JP48141761A JPS49101165A (xx) 1972-12-30 1973-12-18
NL7317494A NL7317494A (xx) 1972-12-30 1973-12-20
FR7346195A FR2212836A5 (xx) 1972-12-30 1973-12-21
DE2364577A DE2364577A1 (de) 1972-12-30 1973-12-24 Tuftingmaschine
BE139351A BE809190A (fr) 1972-12-30 1973-12-27 Machine a tufter
US00439481A US3857345A (en) 1972-12-30 1974-02-14 Variable eccentric and locating plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB6025172A GB1417130A (en) 1972-12-30 1972-12-30 Tufting machines
US00439481A US3857345A (en) 1972-12-30 1974-02-14 Variable eccentric and locating plate

Publications (1)

Publication Number Publication Date
US3857345A true US3857345A (en) 1974-12-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00439481A Expired - Lifetime US3857345A (en) 1972-12-30 1974-02-14 Variable eccentric and locating plate

Country Status (9)

Country Link
US (1) US3857345A (xx)
JP (1) JPS49101165A (xx)
AU (1) AU473654B2 (xx)
BE (1) BE809190A (xx)
CA (1) CA985574A (xx)
DE (1) DE2364577A1 (xx)
FR (1) FR2212836A5 (xx)
GB (1) GB1417130A (xx)
NL (1) NL7317494A (xx)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041844A (en) * 1974-06-12 1977-08-16 Sulzer Brothers Limited Hydrostatic piston machine
US4190006A (en) * 1977-08-05 1980-02-26 Edgar Pickering (Blackburn) Limited Tufting machines
US4515096A (en) * 1982-08-13 1985-05-07 Spencer Wright Industries, Inc. Tufting machines
GB2161840A (en) * 1982-08-13 1986-01-22 Spencer Wright Ind Inc Tufting machines
US4569297A (en) * 1983-07-07 1986-02-11 Pfaff Industriemaschinen Gmbh Needle bar detachable drive and stroke adjusting mechanism
US4616585A (en) * 1985-05-27 1986-10-14 Rockwell-Rimoldi S.P.A. Device providing for three sewing machine needle strokes
US4705252A (en) * 1986-08-08 1987-11-10 The United States Of America As Represented By The Department Of Energy X, Y, Z positioner
US4834005A (en) * 1987-09-08 1989-05-30 Spencer Wright Industries, Inc. Tufting machine adjustable stroke mechanism
US5189928A (en) * 1990-10-31 1993-03-02 The Minster Machine Company Adjustable stroke punch press
US5305661A (en) * 1992-10-05 1994-04-26 Caterpillar Inc. Apparatus and method for positioning a link
US5320053A (en) * 1991-09-30 1994-06-14 Tuftco Corp. Demountable rotary cam for tufting machine
WO1995034706A1 (en) * 1994-06-14 1995-12-21 G T Supplies & Engineering (Acc) Ltd. A tufting machine
BE1008195A3 (fr) * 1991-11-02 1996-02-13 Claas Ohg Entrainement a bielles pour plancher de preparation d'une moissonneuse-batteuse.
GB2327685A (en) * 1997-07-23 1999-02-03 Bonas Machine Co A Drive Mechanism for a Griffe Frame
US20070107470A1 (en) * 2003-10-27 2007-05-17 Tokai Kogyo Mishin Kabushiki Kaisha Needle bar drive apparatus for sewing machine
CN103866504A (zh) * 2012-12-18 2014-06-18 格罗兹-贝克特公司 用于纺织机的工具模块
CN113186670A (zh) * 2021-03-23 2021-07-30 绍兴市晶远花型设计有限公司 一种绣花机驱动器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832499A1 (de) * 1988-09-24 1990-03-29 Schuler Gmbh L Presse mit greiferschienen
US4884324A (en) * 1988-10-12 1989-12-05 Morrison Berkshire, Inc. Needle loom having improved needle beam guide system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE685936C (de) * 1938-07-10 1939-12-29 Masch Werke Zu Frankfurt A M V Verwendung einer auf eine gemeinsame Schwinge arbeitenden Doppelexzenteranordnung zum Antrieb der Stichbildewerkzeuge
US2592237A (en) * 1950-01-11 1952-04-08 Builders Iron Foundry Pump stroke adjusting device
DE872724C (de) * 1951-10-21 1953-04-02 Johannes Neukirch Naehmaschine mit auf und ab bewegter Nadelstange
US2961982A (en) * 1958-01-24 1960-11-29 Russell Lacey Mfg Company Inc Means for forming a tufted fabric having different heights of tufting thereon
US3653346A (en) * 1969-10-11 1972-04-04 Singer Co Uk Ltd Tufting machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE685936C (de) * 1938-07-10 1939-12-29 Masch Werke Zu Frankfurt A M V Verwendung einer auf eine gemeinsame Schwinge arbeitenden Doppelexzenteranordnung zum Antrieb der Stichbildewerkzeuge
US2592237A (en) * 1950-01-11 1952-04-08 Builders Iron Foundry Pump stroke adjusting device
DE872724C (de) * 1951-10-21 1953-04-02 Johannes Neukirch Naehmaschine mit auf und ab bewegter Nadelstange
US2961982A (en) * 1958-01-24 1960-11-29 Russell Lacey Mfg Company Inc Means for forming a tufted fabric having different heights of tufting thereon
US3653346A (en) * 1969-10-11 1972-04-04 Singer Co Uk Ltd Tufting machines

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041844A (en) * 1974-06-12 1977-08-16 Sulzer Brothers Limited Hydrostatic piston machine
US4190006A (en) * 1977-08-05 1980-02-26 Edgar Pickering (Blackburn) Limited Tufting machines
US4515096A (en) * 1982-08-13 1985-05-07 Spencer Wright Industries, Inc. Tufting machines
GB2161840A (en) * 1982-08-13 1986-01-22 Spencer Wright Ind Inc Tufting machines
US4569297A (en) * 1983-07-07 1986-02-11 Pfaff Industriemaschinen Gmbh Needle bar detachable drive and stroke adjusting mechanism
US4616585A (en) * 1985-05-27 1986-10-14 Rockwell-Rimoldi S.P.A. Device providing for three sewing machine needle strokes
US4705252A (en) * 1986-08-08 1987-11-10 The United States Of America As Represented By The Department Of Energy X, Y, Z positioner
US4834005A (en) * 1987-09-08 1989-05-30 Spencer Wright Industries, Inc. Tufting machine adjustable stroke mechanism
US5189928A (en) * 1990-10-31 1993-03-02 The Minster Machine Company Adjustable stroke punch press
DE4231834C2 (de) * 1991-09-30 2002-06-13 Tuftco Corp Tufting-Maschine
US5320053A (en) * 1991-09-30 1994-06-14 Tuftco Corp. Demountable rotary cam for tufting machine
BE1008195A3 (fr) * 1991-11-02 1996-02-13 Claas Ohg Entrainement a bielles pour plancher de preparation d'une moissonneuse-batteuse.
US5305661A (en) * 1992-10-05 1994-04-26 Caterpillar Inc. Apparatus and method for positioning a link
WO1995034706A1 (en) * 1994-06-14 1995-12-21 G T Supplies & Engineering (Acc) Ltd. A tufting machine
US5752457A (en) * 1994-06-14 1998-05-19 G.T. Supplies & Engineering (Acc) Ltd. Tufting machine having improved needle stroke adjustment
GB2327685A (en) * 1997-07-23 1999-02-03 Bonas Machine Co A Drive Mechanism for a Griffe Frame
US20070107470A1 (en) * 2003-10-27 2007-05-17 Tokai Kogyo Mishin Kabushiki Kaisha Needle bar drive apparatus for sewing machine
US7322303B2 (en) * 2003-10-27 2008-01-29 Tokai Kogyo Mishin Kabushiki Kaisha Needle bar drive apparatus for sewing machine
CN103866504A (zh) * 2012-12-18 2014-06-18 格罗兹-贝克特公司 用于纺织机的工具模块
EP2746440A1 (de) * 2012-12-18 2014-06-25 Groz-Beckert KG Werkzeugmodul für Textilmaschine
US9080270B2 (en) 2012-12-18 2015-07-14 Groz-Beckert Kg Tool module for textile machine
US9284671B2 (en) 2012-12-18 2016-03-15 Groz-Beckert Kg Tool module for textile machine
CN103866504B (zh) * 2012-12-18 2018-03-27 格罗兹-贝克特公司 用于纺织机的工具模块
CN113186670A (zh) * 2021-03-23 2021-07-30 绍兴市晶远花型设计有限公司 一种绣花机驱动器

Also Published As

Publication number Publication date
AU6358373A (en) 1975-06-19
NL7317494A (xx) 1974-07-02
GB1417130A (en) 1975-12-10
FR2212836A5 (xx) 1974-07-26
JPS49101165A (xx) 1974-09-25
CA985574A (en) 1976-03-16
BE809190A (fr) 1974-04-16
AU473654B2 (en) 1976-07-01
DE2364577A1 (de) 1974-07-04

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SPENCER WRIGHT INDUSTRIES, INC., A CORP OF TENNESS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:FNB FINACIAL COMPANY A MASSACHUSETTS BUSINESS TRUST;FIRST NATIONAL BANK OF BOSTON, THE A NATIONAL BANKING ASSOCIATION;REEL/FRAME:004248/0926

Effective date: 19840209