GB1106672A - Thread-controlling devices - Google Patents

Thread-controlling devices

Info

Publication number
GB1106672A
GB1106672A GB5293964A GB5293964A GB1106672A GB 1106672 A GB1106672 A GB 1106672A GB 5293964 A GB5293964 A GB 5293964A GB 5293964 A GB5293964 A GB 5293964A GB 1106672 A GB1106672 A GB 1106672A
Authority
GB
United Kingdom
Prior art keywords
rollers
thread
longitudinal movement
locked
plunger
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
GB5293964A
Inventor
Charles Snowdon
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.)
Ind Res & Developments Ltd
Original Assignee
Ind Res & Developments 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 Ind Res & Developments Ltd filed Critical Ind Res & Developments Ltd
Priority to GB5293964A priority Critical patent/GB1106672A/en
Publication of GB1106672A publication Critical patent/GB1106672A/en
Expired legal-status Critical Current

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
    • 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

Abstract

1,106,672. Tensioning apparatus, rollers; sewing machines. INDUSTRIAL RESEARCH & DEVELOPMENTS Ltd. 29 March, 1966 [31 Dec., 1964; 4 Feb., 1965], Nos. 52939/64 and 4809/64. Headings DID and D1G. Thread-controlling means for use, e.g. in sewing machines comprise a rotatable member biased into a locked position in frictional engagement with a body, and fluid pressure means operable to part said member from said body for rotation, the arrangement being such that a thread engaged with said member is prevented from longitudinal movement when said member is locked, and is free to move longitudinally to rotate said member when the latter is parted from said body. As shown, rollers 10, 11 are seated in semicylindrical recesses in blocks 12, 13 biased together by springs 14, whereby the contacting rollers are locked in position to prevent longitudinal movement of thread 17 passing therebetween. If compressed air is applied to passages 15 opening in the base of each recess, the blocks 12, 13 are biased part and the rollers are free to rotate to allow longitudinal movement of the thread. The latter passes between a plunger 20 and an anvil 22, uniform air pressure being applied to plunger 20 for applying uniform tension to the thread. The thread passes to the rollers 10, 11 over a roller 28 carried by a plunger 25 biased outwardly by a spring 26 to draw off thread from a supply 31 when the rollers 10, 11 are locked. When rollers 10, 11 are faced, air pressure is applied via a channel 30 to plunger 25 to move, the latter inwardly to face the thread previously draw off by roller 28. In a modification, Fig. 3, not shown, interengaging rollers (35), (36) are seated in semi-cylindrical recesses in a block (39), the arrangement being such that the rollers are just free to rotate. Channels (40), (41) enter the bases of the recesses holding rollers (35) and (36) respectively. When compressed air is applied to channel (40), roller (36) is frictionally locked against its recess to prevent longitudinal movement of a thread passing between the rollers. When compressed air is applied to channel (41) also, roller (36) is freed and the rollers can rotate to permit longitudinal movement of the thread.
GB5293964A 1964-12-31 1964-12-31 Thread-controlling devices Expired GB1106672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5293964A GB1106672A (en) 1964-12-31 1964-12-31 Thread-controlling devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5293964A GB1106672A (en) 1964-12-31 1964-12-31 Thread-controlling devices

Publications (1)

Publication Number Publication Date
GB1106672A true GB1106672A (en) 1968-03-20

Family

ID=10465915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5293964A Expired GB1106672A (en) 1964-12-31 1964-12-31 Thread-controlling devices

Country Status (1)

Country Link
GB (1) GB1106672A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662294A (en) * 1985-08-16 1987-05-05 Kochs Adler Ag Device at a sewing machine for applying a tensile stress in a material to be fed in a sewing process
GB2188070A (en) * 1986-03-20 1987-09-23 Brother Ind Ltd Thread pull-out mechanism for sewing machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662294A (en) * 1985-08-16 1987-05-05 Kochs Adler Ag Device at a sewing machine for applying a tensile stress in a material to be fed in a sewing process
GB2188070A (en) * 1986-03-20 1987-09-23 Brother Ind Ltd Thread pull-out mechanism for sewing machine
US4757776A (en) * 1986-03-20 1988-07-19 Brother Kogyo Kabushiki Kaisha Thread pull-out mechanism for a sewing machine
GB2188070B (en) * 1986-03-20 1990-02-14 Brother Ind Ltd Sewing machine

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