GB1484719A - Adjustable eccentric for sewing machines - Google Patents

Adjustable eccentric for sewing machines

Info

Publication number
GB1484719A
GB1484719A GB47286/74A GB4728674A GB1484719A GB 1484719 A GB1484719 A GB 1484719A GB 47286/74 A GB47286/74 A GB 47286/74A GB 4728674 A GB4728674 A GB 4728674A GB 1484719 A GB1484719 A GB 1484719A
Authority
GB
United Kingdom
Prior art keywords
eccentric
looper
shaft
flange
assembly
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
Application number
GB47286/74A
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.)
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
Application filed by Singer Co filed Critical Singer Co
Publication of GB1484719A publication Critical patent/GB1484719A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

1484719 Sewing machine; looper adjustment SINGER CO 31 Oct 1974 [15 Nov 1973] 47286/74 Heading DIG [Also in Division F2] In a sewing machine having a rotary drive shaft 20 and an oscillatory stitch forming instrumentality an adjustable throw eccentric is provided on the shaft, a pitman 22 connecting the eccentric to the instrumentality (in this case a looper 15 Figs. 1 and 2 not shown). The eccentric comprises an inner eccentric member 60 having an outer flange 64 and a radial slot 65, and an outer circumscribing eccentric member 61 having a flange 69 provided with holes 70 bearing screws 71 which extend through slot 65 to engage the drive shaft and lock the assembly in a selected relationship with the shaft. To adjust the eccentricity the screws are slackened and member 61 rotated relatively to the rest of the assembly, indicia a-c and x on flange 69 and pitman 22 co-operating to indicate primarily the eccentricity set and being related in this case to the needle size. It is stated that rotation of part 60 on shaft 20 allows alteration primarily of timing, indicia a-c on flange 64 being provided. Looper Drive. The eccentric assembly (21) drives a rock shaft (25) connected to a rock frame (26) bearing spaced arms (30, 31) between which a looper carrier (35) is pivoted on a pin (38). Rocking movements of the frame (26) provides the needle avoiding movement of the looper bill (15), endwise movements being derived from a crank mechanism (43-52).
GB47286/74A 1973-11-15 1974-10-31 Adjustable eccentric for sewing machines Expired GB1484719A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US416145A US3871311A (en) 1973-11-15 1973-11-15 Adjustable eccentric for sewing machines

Publications (1)

Publication Number Publication Date
GB1484719A true GB1484719A (en) 1977-09-01

Family

ID=23648748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47286/74A Expired GB1484719A (en) 1973-11-15 1974-10-31 Adjustable eccentric for sewing machines

Country Status (2)

Country Link
US (1) US3871311A (en)
GB (1) GB1484719A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817417A (en) * 1987-05-06 1989-04-04 Westinghouse Electric Corp. Double eccentric mount
US4907456A (en) * 1988-03-24 1990-03-13 Westinghouse Electric Corp. Sensor probe system
IT1229397B (en) * 1989-05-31 1991-08-08 Rimoldi Srl CONTROL KINEMATISM OF THE UPPER CROCHET IN MACHINES FOR STITCHING ON THE OVERLOAD.
US5109766B1 (en) * 1990-10-31 1994-03-22 Minster Machine Co Adjustable stroke punch press
US5320053A (en) * 1991-09-30 1994-06-14 Tuftco Corp. Demountable rotary cam for tufting machine
CN109706628B (en) * 2019-03-12 2021-01-01 杰克缝纫机股份有限公司 Sewing machine with adjustable track
CN110396777B (en) * 2019-06-25 2024-04-09 吴江阳光科技缝纫机有限公司 Looper adjusting device of chain type sewing machine
CN115125678A (en) * 2021-03-26 2022-09-30 本田技研工业株式会社 Sewing device and positioning method of curved needle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US324639A (en) * 1885-08-18 Manttfactubebs
US2950695A (en) * 1956-11-02 1960-08-30 Pfaff Ag G M Looper drive for double chain stitch sewing machines
US2958301A (en) * 1958-02-12 1960-11-01 Medynski Joseph Mecktie centralizing stitching machine
DE1294171B (en) * 1962-10-13 1969-04-30 Pfaff Ag G M Gripper drive for chain stitch sewing machines
GB998397A (en) * 1962-10-24 1965-07-14 Pfaff Ag G M Improvements in or relating to chain-stitch sewing machines

Also Published As

Publication number Publication date
US3871311A (en) 1975-03-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee