GB1446238A - Forming a row of stitches in a workpiece - Google Patents

Forming a row of stitches in a workpiece

Info

Publication number
GB1446238A
GB1446238A GB4939573A GB4939573A GB1446238A GB 1446238 A GB1446238 A GB 1446238A GB 4939573 A GB4939573 A GB 4939573A GB 4939573 A GB4939573 A GB 4939573A GB 1446238 A GB1446238 A GB 1446238A
Authority
GB
United Kingdom
Prior art keywords
workpiece
stitches
racks
abnormality
oct
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
GB4939573A
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.)
Noxet UK Ltd
Original Assignee
British United Shoe Machinery Ltd
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 British United Shoe Machinery Ltd filed Critical British United Shoe Machinery Ltd
Publication of GB1446238A publication Critical patent/GB1446238A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B21/00—Sewing machines with devices for automatically controlling movement of work-carrier relative to stitch-forming mechanism in order to obtain particular configuration of seam, e.g. programme-controlled for sewing collars, for attaching pockets
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2207/00—Use of special elements
    • D05D2207/02—Pneumatic or hydraulic devices

Landscapes

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

Abstract

1446238 Sewing machine BRITISH UNITED SHOE MACHINERY CO 23 Oct 1973 [24 Oct 1972] 49395/73 Heading DIG When a row of stitches is formed in a workpiece 16 supported to be movable in any direction in a plane, the needle thread tension is controlled in response to the direction in which the workpiece is moved. As disclosed, stitches formed during movements beyond certain angular limits are rendered abnormal in appearance; this abnormality is hidden by increasing the needle thread tension in that case so that the abnormality is drawn into the work. The machine is controlled by a digital or analog computer 28 which, if the feed direction falls outside the set limit, operates a piston and cylinder device 40 to pivot a lever 36 to vary the tension provided by the tensioner 32. Two preset tensions are provided in the tensioner disclosed. Work feeding. The workpiece 16 is carried on a support 22 mounted for movement about X and Y axes by racks (one, 24, shown) operated by motor driven pinions 24. Shaft encoders may be connected to the racks.
GB4939573A 1972-10-24 1973-10-23 Forming a row of stitches in a workpiece Expired GB1446238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00299945A US3827382A (en) 1972-10-24 1972-10-24 Method and apparatus for forming normally appearing stitches

Publications (1)

Publication Number Publication Date
GB1446238A true GB1446238A (en) 1976-08-18

Family

ID=23156991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4939573A Expired GB1446238A (en) 1972-10-24 1973-10-23 Forming a row of stitches in a workpiece

Country Status (3)

Country Link
US (1) US3827382A (en)
CA (1) CA987965A (en)
GB (1) GB1446238A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877405A (en) * 1974-02-22 1975-04-15 Usm Corp Automatically adjustable apparatus for embroidery stitching
US4301978A (en) * 1979-04-05 1981-11-24 The Singer Company Electro-magnetic thread tension control for sewing machines
DE3000831C2 (en) * 1980-01-11 1982-11-18 Kochs Adler Ag, 4800 Bielefeld Automatic sewing machine for producing a seam with a fastening seam and locking stitches
US5193470A (en) * 1991-11-07 1993-03-16 British United Shoe Machinery Limited Cording and workpiece holder for automatic stitching machines
DE4446138C1 (en) * 1994-12-23 1996-07-04 Pfaff Ag G M Sewing unit with a sewing material holder that can be moved relative to the thread-guiding needle and a sewing material downholder with a needle passage opening
DE10231466C1 (en) * 2002-07-05 2003-07-10 Pfaff Ind Masch Programmable sewing machine with unit allowing sewing in any selected direction, also includes thread deflector to prevent inadvertent stitching of shuttle thread
CN108842310A (en) * 2018-08-15 2018-11-20 浙江沪龙科技股份有限公司 Integrated full automatic directly drives roller sewing machine and its control method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1081596A (en) * 1912-04-23 1913-12-16 Singer Mfg Co Thread-controller for sewing-machines.
GB701229A (en) * 1951-06-20 1953-12-23 Singer Mfg Co Thread tension devices for lock-stitch sewing machines
US3082722A (en) * 1958-08-08 1963-03-26 Nihon Mishin Seizo Kabushiki K Stitch-forming mechanism of a sewing machine
US3528379A (en) * 1965-02-15 1970-09-15 Robert F Miller Automatic control and thread cutter for sewing machines
DE1902711A1 (en) * 1969-01-21 1970-08-13 Union Special Maschinenfab Double chain-stitch sewing machine with - thread deflector
US3724409A (en) * 1971-07-01 1973-04-03 Honeywell Inf Systems Controllable tensioning devices for strand material

Also Published As

Publication number Publication date
CA987965A (en) 1976-04-27
US3827382A (en) 1974-08-06

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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