GB673714A - Improvements in and relating to a sewing machine - Google Patents
Improvements in and relating to a sewing machineInfo
- Publication number
- GB673714A GB673714A GB32196/49A GB3219649A GB673714A GB 673714 A GB673714 A GB 673714A GB 32196/49 A GB32196/49 A GB 32196/49A GB 3219649 A GB3219649 A GB 3219649A GB 673714 A GB673714 A GB 673714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tension
- finger
- thread
- spring
- spindle
- 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
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
Abstract
673,714. Sewing-machines. MEFINA SOC. ANON. Dec. 15, 1949 [Dec. 20, 1948], No. 32196/49. Class 112. Thread-tension devices; frames; controlling needle thread.-The tension device is placed inside the machine arm adjacent an opening for the passage of the thread, in a space separated from that enclosing the needle-driving mechanism; provision is made for easy adjustment. The device is preferably mounted on a cover closing the end of the arm. The tension may be released automatically when the presser-foot is raised. An auxiliary take-up, also adjustable, may be provided. In the form shown, the end portion 2 of the machine arm 1 is formed as a cover hinged at the lower edge at 6 and held closed by a catch 7 at the top ; it is slotted at 60 in its lower part to clear the thread. The usual tension discs 14, which may have a washer 16 between them to enable two threads to be used, are mounted on a hollow spindle 12 fixed in a plate 13 which separates the tension mechanism and the slot 60 from the mechanism in the arm 1, the discs being pressed together by a head 20 on a rod 31 which has a head 32 at the other end acted on by a leaf spring 30 adjustably fixed to a member 27 pivoted at 28 in lugs on the plate 13 and located by a blade spring 26 secured to it and bearing against an abutment plunger 24; adjustment of the tension is effected by means of a finger-wheel 17 with a cam face 23 which moves the plunger 24 inwards to increase the stress in the springs 26, 30. The tension is released when the presserfoot is raised by a finger 46 on a member 45 which is pivoted on an axis to the rear of the axis of the spindle 12 and has a cam tail engaged by the presser-lifting lever 43. Associated with the tension device is an auxiliary take-up comprising a spiral spring 34 extending forwards and outwards at its outer end 35 to provide a finger bearing downward on the thread, the downward movement of this finger being limited by a stop; the inner end of this spring is anchored in a member 37 frictionally mounted on the spindle 12 and adjustable thereon by means of a finger 38 projecting through the end face of the part 2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH673714X | 1948-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB673714A true GB673714A (en) | 1952-06-11 |
Family
ID=4527906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB32196/49A Expired GB673714A (en) | 1948-12-20 | 1949-12-15 | Improvements in and relating to a sewing machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US2609772A (en) |
BE (1) | BE492539A (en) |
CH (1) | CH276111A (en) |
FR (1) | FR1002705A (en) |
GB (1) | GB673714A (en) |
NL (1) | NL80762C (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733025A (en) * | 1956-01-31 | sporney | ||
US2764366A (en) * | 1954-01-27 | 1956-09-25 | White Sewing Machine Corp | Thread tensioning device for sewing machines |
DE1033493B (en) * | 1957-02-21 | 1958-07-03 | Pfaff Ag G M | Device for adjusting the upper thread tension on sewing machines |
US2965058A (en) * | 1958-09-18 | 1960-12-20 | Singer Mfg Co | Thread tension device for sewing machines |
CH400738A (en) * | 1962-01-10 | 1965-10-15 | Gegauf Fritz Ag | sewing machine |
CH406806A (en) * | 1963-12-20 | 1966-01-31 | Gegauf Fritz Ag | Needle thread tensioning device for sewing machines |
US3366083A (en) * | 1966-05-26 | 1968-01-30 | Singer Co | Thread tensioning device for sewing machines |
CH485901A (en) * | 1968-12-06 | 1970-02-15 | Mefina Sa | Sewing machine upper thread tension adjuster |
US3792674A (en) * | 1969-11-04 | 1974-02-19 | Mefina Sa | Sewing machine |
US3667414A (en) * | 1970-09-25 | 1972-06-06 | Singer Co | Thread tensioning device for sewing machines |
GB1481369A (en) * | 1975-06-23 | 1977-07-27 | Western Stamping Corp | Sewing machine |
US4141306A (en) * | 1976-12-10 | 1979-02-27 | The Singer Company | Thread tensioning apparatus for sewing machines |
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 |
US4466371A (en) * | 1983-07-11 | 1984-08-21 | The Singer Company | Threading arrangement for a sewing machine |
US4611547A (en) * | 1984-06-13 | 1986-09-16 | Janome Sewing Machine Co., Ltd. | Upper thread tension device of a sewing machine |
US4947773A (en) * | 1989-07-20 | 1990-08-14 | Jean Blanc Ferdinand H | Thread guide ring for a needle bar |
US6055920A (en) * | 1997-05-22 | 2000-05-02 | Brother Kogyo Kabushiki Kaisha | Sewing machine with both needle bar rocking and thread tension releasing mechanisms actuated by single actuator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US154084A (en) * | 1874-08-11 | Improvement in sewing-machines | ||
USRE22822E (en) * | 1946-12-24 | Sewing machine arm | ||
US994509A (en) * | 1910-07-09 | 1911-06-06 | Singer Mfg Co | Thread-controller for sewing-machines. |
US1518494A (en) * | 1922-05-02 | 1924-12-09 | Elcock Robert | Tensioning device for sewing machines |
US1507597A (en) * | 1923-02-15 | 1924-09-09 | Charles H Greenwood | Sewing machine |
US2298767A (en) * | 1940-06-03 | 1942-10-13 | Union Special Machine Co | Closure hinge means |
-
0
- NL NL80762D patent/NL80762C/xx active
- BE BE492539D patent/BE492539A/xx unknown
-
1948
- 1948-12-20 CH CH276111D patent/CH276111A/en unknown
-
1949
- 1949-03-31 US US84607A patent/US2609772A/en not_active Expired - Lifetime
- 1949-12-03 FR FR1002705D patent/FR1002705A/en not_active Expired
- 1949-12-15 GB GB32196/49A patent/GB673714A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH276111A (en) | 1951-06-30 |
BE492539A (en) | |
US2609772A (en) | 1952-09-09 |
NL80762C (en) | |
FR1002705A (en) | 1952-03-10 |
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