US3403647A - Sewing needle particularly adapted for sewing with threads of synthetic fibers - Google Patents

Sewing needle particularly adapted for sewing with threads of synthetic fibers Download PDF

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Publication number
US3403647A
US3403647A US592465A US59246566A US3403647A US 3403647 A US3403647 A US 3403647A US 592465 A US592465 A US 592465A US 59246566 A US59246566 A US 59246566A US 3403647 A US3403647 A US 3403647A
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US
United States
Prior art keywords
needle
sewing
eye
threads
synthetic fibers
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
US592465A
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English (en)
Inventor
Supitar Petr
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.)
IGLA NARODNI PODNIK
Original Assignee
IGLA NARODNI PODNIK
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 IGLA NARODNI PODNIK filed Critical IGLA NARODNI PODNIK
Application granted granted Critical
Publication of US3403647A publication Critical patent/US3403647A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B85/00Needles

Definitions

  • the present invention generally relates to sewing needles and in particular to a novel construction for a sewing needle.
  • the sewing needles become covered with molten parts of synthetic fiber threads; the synthetic fiber threads often tear; poorly sewed seams are produced; and other similar problems arise. Consequently, the output of the sewing machine is reduced and the quality of the sewed material is also lowered.
  • cooling arrangements for the sewing needle have been incorporated in sewing machines of the prior art. It is also known to cool the sewing needle by air or liquid during the sewing operation. Lastly, it is also known to give the sewing needle a special shape which favors the cooling thereof during rapid sewing.
  • a sewing needle having the shape, configuration and construction in accordance with this invention renders excellent results during rapid sewing of synthetic fiber material. Furthermore, a sewing machine operating with a needle of this invention can increase its output without lowering the quality of the seams when compared to the seams produced with ordinary sewing needles.
  • the sewing needle of this invention is, characterized by the outline of the needle in theneedle eye portion having an overall cross-sectional dimension that exceedsthe nominal diameter. of the needle by atleast 0.08 mm., while the portion of the needle above the needle eye .is thinner than the nominal diameter of the needle.
  • FIG. 1 is an elevation of the sewing needle of this invention
  • FIG. 2 is a cross-section along line A--A of FIG. 1;
  • FIG. 3 is a cross-section along line BB of FIG. 1.
  • FIG. 1 the sewing needle of this invention'in which the portion 3 of the needle eye is thicker than the nominal diameter at the first blade portion .1 of the needle, whereas the second blade portion 2 of the needle above I the needle eye portion is thinner than the nominal diameter of the portion 1 of the needle.
  • the excess thickness of the portion 3 in excess of the nominal diameter of the portion 1 is symmetrically disposed about the axis of the needle and amounts to at least 0.08 mm.
  • the thickness of the region of the needle eye in prior art sewing needles has also been occasionally increased due to the stamping of the needle eye into the needle body.
  • the increase in thickness in the needle due to stamping lies within the finishing tolerances of this type of product and is, therefore, of an entirely different dimensional order which is significantly below the specified minimum of 0.08 mm. in the sewing needle of this invention.
  • the special shape of the needle of this invention a considerable reduction of the needle friction during traversal of the material is effected which results in a reduced temperature increase in the needle during rapid sewing.
  • the needle of this invention is further provided with longitudinal grooves 4 extending along both sides from the needle eye upwardly which facilitate a drawing off of the heat energy and also shift the region of maximum temperature in the needle toward the needle point portion.
  • the needle of this invention is also provided with a hole 6 located between the needle eye and the needle point portion, which also aids in shifting the maximum temperature center away from the needle eye.
  • the needle of this invention is further provided with a longer than normal cone portion 5 which connects the shank 7 of the needle to the portion 1 having the nominal diameter.
  • This longer than normal cone portion 5 effects an increased stiffness of the needle when compared with the normal sewing needles.
  • needles with such an elongated cone portion 5 have increased stability and considerably reduced vibrations during rapid sewing.
  • the elongated cone portion 5 also facilitates the drawing olf of heat energy located between the needle eye portion and the shank 7.
  • the needle shank 7 proper is also longer than ordinary needle shanks, 'which increases to overall stiffness of the needle and its ability to draw off heat energy from the cone portion.
  • the sewing needle of this invention may be used with all types of sewing machines without requiring any ad justing or fitting in the sewing machine.
  • an accessory cooling unit is used in the sewing machine the results obtained with the sewing needle of this invention are even better.
  • An improved sewing needle of the character described having a shank portion at one end thereof and kitnted end portion at the other end thereof, a blade portion, and a needle-eye portion adjacent "to said pointed end portion, the cross-section of a first portion of said blade portion of said needle, which is located between the shank and needle eye portions defining a nominal diameter of said needle, said needle having a needle eye within said needle eye portion, the diameter of the crosssection of said needle eye portion exceeding said nominal diameter byat least 0.08 mm.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US592465A 1965-12-13 1966-11-07 Sewing needle particularly adapted for sewing with threads of synthetic fibers Expired - Lifetime US3403647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS748665 1965-12-13

Publications (1)

Publication Number Publication Date
US3403647A true US3403647A (en) 1968-10-01

Family

ID=5424070

Family Applications (1)

Application Number Title Priority Date Filing Date
US592465A Expired - Lifetime US3403647A (en) 1965-12-13 1966-11-07 Sewing needle particularly adapted for sewing with threads of synthetic fibers

Country Status (5)

Country Link
US (1) US3403647A (de)
AT (1) AT268025B (de)
BE (1) BE688828A (de)
DE (1) DE1660876A1 (de)
GB (1) GB1105698A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896750A (en) * 1972-07-18 1975-07-29 Brunswick Corp Machine and method for producing a three dimensional lattice
US4195584A (en) * 1977-03-09 1980-04-01 Falk Curt L Tufting needle
US4233917A (en) * 1977-08-10 1980-11-18 Wool Research Organization Of New Zealand (Inc.) Needle stitching
US6206256B1 (en) * 1998-09-18 2001-03-27 I.M.A. Industria Macchine Automatiche S.P.A. Needle for attaching a tag to an infusion bag using an intermediate knotted thread
US20110240690A1 (en) * 2010-03-31 2011-10-06 Curt Newsom Drawstring restringing apparatus and method
US20140259681A1 (en) * 2013-03-15 2014-09-18 Equalizer Industries, Inc. Apparatus for placing a sealant cutting wire through a bead of sealant in a glass installation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1813496B1 (de) * 1968-12-09 1970-02-12 Kemptener Gmbh Maschf Kettelmaschine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US568946A (en) * 1896-10-06 Sewing-machine needle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US568946A (en) * 1896-10-06 Sewing-machine needle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896750A (en) * 1972-07-18 1975-07-29 Brunswick Corp Machine and method for producing a three dimensional lattice
US4195584A (en) * 1977-03-09 1980-04-01 Falk Curt L Tufting needle
US4233917A (en) * 1977-08-10 1980-11-18 Wool Research Organization Of New Zealand (Inc.) Needle stitching
US6206256B1 (en) * 1998-09-18 2001-03-27 I.M.A. Industria Macchine Automatiche S.P.A. Needle for attaching a tag to an infusion bag using an intermediate knotted thread
US20110240690A1 (en) * 2010-03-31 2011-10-06 Curt Newsom Drawstring restringing apparatus and method
US20140259681A1 (en) * 2013-03-15 2014-09-18 Equalizer Industries, Inc. Apparatus for placing a sealant cutting wire through a bead of sealant in a glass installation

Also Published As

Publication number Publication date
GB1105698A (en) 1968-03-13
AT268025B (de) 1969-01-27
DE1660876A1 (de) 1971-04-29
BE688828A (de) 1967-03-31

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