IE33859L - Sewing machine thread tensioner - Google Patents

Sewing machine thread tensioner

Info

Publication number
IE33859L
IE33859L IE691587A IE158769A IE33859L IE 33859 L IE33859 L IE 33859L IE 691587 A IE691587 A IE 691587A IE 158769 A IE158769 A IE 158769A IE 33859 L IE33859 L IE 33859L
Authority
IE
Ireland
Prior art keywords
lever
spindle
spring
engages
cam
Prior art date
Application number
IE691587A
Other versions
IE33859B1 (en
Original Assignee
Mefina Sa
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 Mefina Sa filed Critical Mefina Sa
Publication of IE33859L publication Critical patent/IE33859L/en
Publication of IE33859B1 publication Critical patent/IE33859B1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/005—Doors or covers for accessing inner parts of the machine; Security devices therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

1,257,133. Upper thread tensioner. MEFINA S.A. 25 Nov., 1969 [6 Dec., 1968], No. 57510/69. Heading D1G. An adjustable tensioning device in a sewing machine comprises a spindle 6 carrying at least two tension discs 5 gripping the upper thread, a spring 8 acting indirectly on the spindle to urge the discs together, a knurled adjusting knob 9 controlling a cam 11 which engages a first lever 14, and a second lever 23 engaging both the spring and the spindle. As shown, both levers are pivoted side by side on the common spindle 15. The lever 14 is connected to spring 8 at one end thereof by an adjustable nut and bolt 20, the end of lever 23 remote from its pivot has a fork engaging a slot in spindle 6. A side projection 27 on lever 23 engages below spring 8. The cam 11 has notches 12 which cooperate with the free end 13 of lever 14 to define a number of tension adjusting positions, the knob 9 having an appropriate scale. A pin (29, Fig. 3 not shown) engages slots (28) in the discs 5 to prevent their rotation. The presser foot lifting lever 56 carries a pivoted rod 58 which engages lever 23 at 61 to release the thread tension when the presser foot is raised. In modifications the levers 14, 23 may be disposed in super position, may have separate pivots and the knob and cam may be disposed horizontally. When two upper threads are employed in the machine the threads are guided to pass round the tensioner in opposite directions. [GB1257133A]
IE1587/69A 1968-12-06 1969-11-25 A device for adjusting the tension of the upper thread in a sewing machine IE33859B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1824068A CH485901A (en) 1968-12-06 1968-12-06 Sewing machine upper thread tension adjuster

Publications (2)

Publication Number Publication Date
IE33859L true IE33859L (en) 1970-05-06
IE33859B1 IE33859B1 (en) 1974-11-27

Family

ID=4431546

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1587/69A IE33859B1 (en) 1968-12-06 1969-11-25 A device for adjusting the tension of the upper thread in a sewing machine

Country Status (14)

Country Link
US (1) US3557731A (en)
JP (1) JPS5218621B1 (en)
AT (2) AT314951B (en)
BE (1) BE741592A (en)
BR (1) BR6914674D0 (en)
CH (1) CH485901A (en)
DE (1) DE1960665A1 (en)
DK (1) DK133562B (en)
ES (1) ES373934A1 (en)
FR (1) FR2025493A1 (en)
GB (1) GB1257133A (en)
IE (1) IE33859B1 (en)
NL (1) NL6918227A (en)
SE (1) SE357985B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3721205A (en) * 1970-02-09 1973-03-20 Aisin Seiki Tension device for a sewing machine
US3863581A (en) * 1972-09-13 1975-02-04 Maruzen Sewing Machine Thread tensioning device for sewing machines
US3841248A (en) * 1973-07-23 1974-10-15 Singer Co Needle thread tensioning module for lock stitch sewing machines
US3978802A (en) * 1974-11-08 1976-09-07 White Sewing Machine Company Sewing machine thread tensioner
US4141306A (en) * 1976-12-10 1979-02-27 The Singer Company Thread tensioning apparatus for sewing machines
US4221180A (en) * 1977-09-21 1980-09-09 The Singer Company Compact upper thread tension device
US4180006A (en) * 1978-03-31 1979-12-25 The Singer Company Tension selecting mechanism for sewing machines
US4372502A (en) * 1981-03-23 1983-02-08 The Singer Company Adjustable thread tensioning device for a sewing machine
US4453480A (en) * 1983-07-11 1984-06-12 The Singer Company Thread tensioning module for a sewing machine
JP5902969B2 (en) * 2012-03-10 2016-04-13 蛇の目ミシン工業株式会社 Sewing machine with lower thread winding guide for retractable thread stand

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA562397A (en) * 1958-08-26 Kleemann Karl Thread tension release mechanism for sewing machines
US1234322A (en) * 1915-10-08 1917-07-24 Singer Mfg Co Needle-thread-controlling device for sewing-machines.
US1518494A (en) * 1922-05-02 1924-12-09 Elcock Robert Tensioning device for sewing machines
BE492539A (en) * 1948-12-20

Also Published As

Publication number Publication date
CH485901A (en) 1970-02-15
DK133562C (en) 1976-12-06
DE1960665A1 (en) 1970-06-18
JPS5218621B1 (en) 1977-05-23
BE741592A (en) 1970-04-16
AT304239B (en) 1972-12-27
AT314951B (en) 1974-05-10
NL6918227A (en) 1970-06-09
IE33859B1 (en) 1974-11-27
US3557731A (en) 1971-01-26
ES373934A1 (en) 1972-03-16
DK133562B (en) 1976-06-08
BR6914674D0 (en) 1973-01-11
FR2025493A1 (en) 1970-09-11
SE357985B (en) 1973-07-16
GB1257133A (en) 1971-12-15

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