US3545392A - Thread take-up lever for a sewing machine - Google Patents

Thread take-up lever for a sewing machine Download PDF

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Publication number
US3545392A
US3545392A US774395A US3545392DA US3545392A US 3545392 A US3545392 A US 3545392A US 774395 A US774395 A US 774395A US 3545392D A US3545392D A US 3545392DA US 3545392 A US3545392 A US 3545392A
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US
United States
Prior art keywords
lever
thread
arms
wire
sewing machine
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 - Lifetime
Application number
US774395A
Other languages
English (en)
Inventor
Marcel Fresard
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.)
Mefina SA
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
Application granted granted Critical
Publication of US3545392A publication Critical patent/US3545392A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B49/00—Take-up devices, e.g. levers, for the needle thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2209/00—Use of special materials
    • D05D2209/12—Metals or metal coatings

Definitions

  • the thread takeup lever comprises a wire mounted in a synthetic plastic member.
  • the wire includes two resilient arms that project from the member, the free ends of which define the thread eye.
  • the invention relates to a thread takeup lever for a sewing machine.
  • takeup levers should be as simple in design and as inexpensive to manufacture as possible; but it is also advantageous that these levers, since they must be accelerated up and down very quickly during sewing, be very light in weight.
  • the purpose of the invention is to provide a thread takeup lever that fulfills these three objectives.
  • An object of the invention is a thread takeup lever, the body of which is at least partly composed of a metal wire.
  • FIG. 1 is a side view partly in cross section of one form of the invention
  • FIG. 2 is a view taken along line lI-ll of FIG. 1;
  • FIG. 3 is a side view in section of a second form of the invention.
  • FIG. 4 is a side view, in crosssection, of a third embodiment of the invention.
  • the embodiment comprises a body consisting essentially of a metal wirel, such as piano wire.
  • the wire I is bent at 2 so as to form two adjacent arms 3 and 4; and a bush 5 is constrained in the bend.
  • the bush accepts a crank controlling the thread takeup lever and driven by the upper horizontal shaft of the sewing machine.
  • a shaft 6 provided with a groove 7 is held between the two arms 3 and 4 at the bend 8 of the thread takeup lever.
  • the shaft 6 enables the thread takeup lever to be pivoted on an arm (not shown) that in turn is pivotally connected to the sewing machine casing.
  • the arm 4 of the wire 1 has an end 9 bent in the shape of a U, to form an eye 11 for the thread.
  • the adjacent end 10 of the arm 3 bears resiliently against the opening of the U to close it.
  • the end 10 projects slightly beyond the end 9, so that the thread can be put into the eye by forcing it laterally I member 12, enclosing part of the wire 1, the bush 5, and the shaft 6.
  • I member 12 enclosing part of the wire 1, the bush 5, and the shaft 6.
  • the construction of the embodiment just described is particularly simple and light, thereby reducing the inertia of a part that must move very rapidly up and down during sewing.
  • FIG. 3 a second form of the thread takeup lever, the body of which is entirely composed of a metal wire 1.
  • the bush 5 and the shaft 6 arefixed to the wire by welding or by the cement known under the registered trade mark "Araldite.
  • This form of the invention incorporates two arms 3 and 4,of which the two ends 9 and 10 form the thread eye, the thread being inserted as explained in connection with the previous embodiment.
  • FIG. 4 A third form of the invention is shown in FIG. 4, the major portion of the body of the lever carrying the bush 5 and shaft 6 being a molded or cast member 12, depending on whether the latter is made of a synthetic plastic or of a light metal.
  • the metal wire 1 embodies the two arms 3 and 4 and the thread eye 11. In this embodiment, the latter is completely closed, the wire fonning a loop.
  • This embodiment can also be modified so that the ends 9 and 10 form exactly the same kind of eye as do the first two formsof the invention, in which case the two wire arms 3 and 4 can be separate ieces of wire or formed from a smgle piece of wire that has a end located within the member
  • the scope of the invention admits of various other variations. In the form shown in FIGS. 1 and 2, for example, the singlepiece of bent wire can be replaced by two separate pieces held in the member 12.
  • the thread takeup lever can be composed of a piece of wire forming a single arm, the free end of which arm is bent to form a closed loop that presses resiliently against the arm so that the thread can be easily inserted.
  • a thread takeup lever comprising a pair of arms, said pair of arms each including a portion adjoining and parallel to the other, one of said pair of arms including a substantially U- shaped portion having a free end, the other of said pair of arms including a free end portion pressing against said free end of said Ushaped portion and cooperating therewith to constitute an eye for carrying a thread, said U-shaped portion and said freeend portion being resilient for being spread apart by lateral introduction of athread between said arms into said y said arms are integrally connected remote from said eye and are constituted by a single continuous length of wire.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US774395A 1967-12-20 1968-11-08 Thread take-up lever for a sewing machine Expired - Lifetime US3545392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1799767A CH468501A (fr) 1967-12-20 1967-12-20 Levier tire-fil pour machine à coudre

Publications (1)

Publication Number Publication Date
US3545392A true US3545392A (en) 1970-12-08

Family

ID=4429633

Family Applications (1)

Application Number Title Priority Date Filing Date
US774395A Expired - Lifetime US3545392A (en) 1967-12-20 1968-11-08 Thread take-up lever for a sewing machine

Country Status (13)

Country Link
US (1) US3545392A (cs)
AT (1) AT295980B (cs)
BE (1) BE723468A (cs)
BR (1) BR6804138D0 (cs)
CH (1) CH468501A (cs)
DE (1) DE1807839A1 (cs)
DK (1) DK119142B (cs)
ES (1) ES360399A1 (cs)
FR (1) FR1590872A (cs)
GB (1) GB1191357A (cs)
IE (1) IE32566B1 (cs)
NL (1) NL6816409A (cs)
SE (1) SE351447B (cs)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817545A (en) * 1986-06-23 1989-04-04 Maruzen Sewing Machine Co., Ltd. Thread take-up lever device for sewing machines
US5441003A (en) * 1992-03-31 1995-08-15 Aisin Seiki Kabushiki Kaisha Sewing machine having a removable head
US7111568B1 (en) * 2005-08-16 2006-09-26 Suzuki Manufacturing, Ltd. Cover stitch sewing machine
US20090277367A1 (en) * 2008-05-06 2009-11-12 Hsien-Chang Tseng Thread Take-up Lever for a Sewing Machine
CN101514517B (zh) * 2008-02-21 2012-06-20 曾贤长 缝纫机挑线杆结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1278634B1 (it) * 1995-03-27 1997-11-27 Vogue Srl Dispositivo per l'alimentazione ed il tensionamento dei fili in una macchina tessile

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817545A (en) * 1986-06-23 1989-04-04 Maruzen Sewing Machine Co., Ltd. Thread take-up lever device for sewing machines
US5441003A (en) * 1992-03-31 1995-08-15 Aisin Seiki Kabushiki Kaisha Sewing machine having a removable head
US7111568B1 (en) * 2005-08-16 2006-09-26 Suzuki Manufacturing, Ltd. Cover stitch sewing machine
CN101514517B (zh) * 2008-02-21 2012-06-20 曾贤长 缝纫机挑线杆结构
US20090277367A1 (en) * 2008-05-06 2009-11-12 Hsien-Chang Tseng Thread Take-up Lever for a Sewing Machine
US7647877B2 (en) * 2008-05-06 2010-01-19 Hsien-Chang Tseng Thread take-up lever for a sewing machine

Also Published As

Publication number Publication date
IE32566L (en) 1969-06-20
BE723468A (cs) 1969-04-16
SE351447B (cs) 1972-11-27
ES360399A1 (es) 1970-07-01
FR1590872A (cs) 1970-04-20
DK119142B (da) 1970-11-16
DE1807839A1 (de) 1969-08-07
NL6816409A (cs) 1969-06-24
AT295980B (de) 1972-01-25
GB1191357A (en) 1970-05-13
CH468501A (fr) 1969-02-15
BR6804138D0 (pt) 1973-04-12
IE32566B1 (en) 1973-09-19

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