US2834310A - Sewing machine needle - Google Patents

Sewing machine needle Download PDF

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Publication number
US2834310A
US2834310A US509654A US50965455A US2834310A US 2834310 A US2834310 A US 2834310A US 509654 A US509654 A US 509654A US 50965455 A US50965455 A US 50965455A US 2834310 A US2834310 A US 2834310A
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blades
needle
blade
intermediate portion
shank
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US509654A
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William J Hleb
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Singer Co
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Singer Co
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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B85/00Needles

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  • the present invention relates to sewing machines and has for a primary object to provide a sewing machine needle whereby three parallel lines of stitching can be simultaneously produced. More particularly, it is an object of this invention to provide a new and improved needle construction somewhat similar to the so-called twin-needles as disclosed in the copending application of Platt, Serial No. 466,991 now Patent No. 2,722,904.
  • Fig. 1 is a perspective view of a needle constructed in accordance with the present invention.
  • Fig. 2 is a fragmentary perspective view similar to Fig. 1, but illustrating the other side of the needle and being partly in section and on a larger scale.
  • Fig. 3 is a section view on the line 3--3 of Fig. 2.
  • an element 1 which is a needle of substantially conventional construction and includes a shank 2 having the usual flat side 3, and a blade 4 having the usual eyepointed work-penetrating end 5 with the thread-eye 6 and the longitudinally-arranged long groove 7 and short groove 8 on opposite sides thereof.
  • the present needle is secured to the needle-bar of a sewing machine (not shown) in the usual fashion by the shank 2.
  • an intermediate portion 9 which is tapered from the shank 2 toward the blade 4.
  • the blade 4 of the element 1 is flanked by a pair of secondary needle blades comprising a right blade 10 and a left blade 11 which are formed the same as the blade 4, i.
  • each includes an eye-pointed work-penetrating end 5 with a thread-eye 6, and grooves 7 and 8.
  • the blades 10 and 11 are arranged parallel to the blade 4 and in a single plane with and directly opposite the blade 4, and have butt ends 12 which overlap the intermediate portion 9 of the element 1.
  • the blades 10 and 11 are fixed in this position by a connector 13 which is castin place about the overlapping portions of the butt ends 12 of the blades 10 and 11 and the intermediate portion 9.
  • the connector 13 is preferably formed of nylon.
  • the loop-taker with which the present needle is designed to be used is a rotary hook arranged on an axis parallel to the line of feed and normal to the plane defined by the :three blades.
  • the loop-taker seizes the loops of needle thread from the blades on the sides thereof with the short grooves 8.
  • the blades 4, 10 and 11 be arranged in a plane that is parallel to and spaced only a very short distance from the plane defined by the path of motion of the loop-seizing beak'of the looptaker so that the loop-seizing beak of the loop-beaker will pick the loop of needle thread successively from each of the blades.
  • the vertical alignment of the blades is also critical in that the position of the blades vertically relative to the beak of the loop-taker must be proper to insure that the thread loop will be seized from the blade.
  • each of the blades is provided with a dishshaped indent 14, which also acts to prevent rotation of the blades 10 and 11 in the connector 13.
  • the element 1 is provided with an indent 15 in the side thereof which together with the converging surface of theintermediate portion 9 of the element 1 prevents displacement of the connector 13 axially relative to the element 1.
  • the indent 15 together with the fiat side 3 which is extended through the intermediate portion 9, as can best be seen in Fig. 3, prevents rotation of the connector 13 relative to the element 1.
  • a three-blade needle in which the two secondary blades 10 and 11 are firmly embedded in the connector 13 and held against both axial displacement and rotation relative thereto by means of the embedded ends of the blade and the indents 14, the blades 10 and 11 being identical and thereby interchangeable which eliminates the necessity for specially designed right and left blades.
  • the connector 13 is in turn fixed to the element 1 and is also secured against axial displacement and rotation relative thereto by the converging side walls of the intermediate portion 9, that portion of the fiat side 3 extending into said intermediate portion 9, and the indent 15.
  • a three-blade sewing machine needle comprising a needle element having an eye-pointed workrpenetrating blade, a shank and a tapered intermediate portion converging from said shank to said blade, said shank having a flat side extending into said intermediate portion, a pair of needle-blades arranged parallel to and in a plane with said element with one of said blades disposed upon each side of said element, each of said blades having an eye-pointed work-penetrating end and a butt end, the butt ends of said blades being arranged in overlapping relation With the intermediate portion of said element, and a connector cast in place about the butt ends of said blades and the intermediate portion of said element which are thereby embedded in said connector, the embedded butt ends of said blades and intermediate portion of said shank having indents formed therein, which indents together with the embedded ends of said blades, the converging side walls of the intermediate portion and the portion of the fiat side extending into said intermediate portion, will prevent both rotation and axial movement of said-
  • a sewing machine unitary needle assembly comprising, a needle element having an eye-pointed workpenetrating blade, a shank and an intermediate portion located between said shank and said blade, said shank having a fiat side extending into said intermediate portion, a pair of secondary needle-blades arranged parallel to and in a plane with said element with one of said blades disposed upon each side of said element, each of said secondary blades having an eye-pointed workpenetrating end and a butt end, the butt ends of said secondary blades being arranged in overlapping relation with the intermediate portion of said element, and a connector cast in place about the butt ends of said secondary blades and the intermediate portion of said element which are thereby embedded in said connector, the embedded ends of said secondary blades having indents formed in the same face of the blades.
  • a sewing machine unitary needle assembly comprising, a needle element having an eye-pointed workpenetrating blade, a shank and an intermediate portion located between said shank and said blade, said shank having a flat side extending into said intermediate portion, a pair of secondary needle-blades arranged parallel to and in a plane with said element with one of said blades disposed upon each side of said element, each of said secondary blades having an eye-pointed workpenetrating end and a butt end, the butt ends of said secondary blades being arranged in overlapping relation with the intermediate portion of said element, and a connector cast in place about the butt ends of said secondary blades and the intermediate portion of said element which are thereby embedded in said connector, the embedded ends of said secondary blades having indents formed in the same face of the blades, and the intermediate portion of said needle element having an indent formed'therein and thereby providing a flat surface disposed at an angle to'the flat side of said shank.
  • a multiple blade sewing machine needle comprising a first needle having an eye-pointed work-penetrating blade, a shank for securing said needle in the needle clamp of a sewing machine, and an inter-mediate portion, a needle blade arranged in opposed spaced parallel relation relatively to the blade of said first needle and having an eye-pointed work-penetrating end and a butt end, the butt end of said blade being arranged in overlapping relation relatively to the intermediate portion of said first needle, and means for securing said first needle and said needle blade in assembled relation comprising a connector cast in place about the butt end of said blade and the intermediate portion of said first needle.
  • a multiple blade sewing machine needle in accordance with claim 4 in which the shank and the blade of said first needle'are of different diameters and the transition between the two diameters is made in the intermediate portion thereof in the area embedded in said connector.
  • a multiple "blade sewing machine needle in accordance with claim 4 in which the first needle and the needle blade are provided with a notch in the area embeddedin said connector.

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

Description

May 13, 1958 w. J. HLEB SEWING MACHINE NEEDLE Filed May 19, 1955 INVENTOR. BY William cl H/eb W 9- nited States Patent 2,834,310 SEWING MACHINE NEEDLE William J. Hleb, Elizabeth, N. J., assignor to The Singer Manufacturing Company, Elizabeth, N. J., a corporation of New Jersey Application May 19, 1955, Serial No. 509,654
6 Claims. (Cl. 112-226) The present invention relates to sewing machines and has for a primary object to provide a sewing machine needle whereby three parallel lines of stitching can be simultaneously produced. More particularly, it is an object of this invention to provide a new and improved needle construction somewhat similar to the so-called twin-needles as disclosed in the copending application of Platt, Serial No. 466,991 now Patent No. 2,722,904.
issued Nov. 8, 1955, but having three blades carried by a single shank and to provide means for securing together the three blades and single shankin' which these elements are so connected that they will be locked against relative motion to preclude any accidental displacement out of operative relation.
Having in mind the above and other objects that will be evident from an understanding of this disclosure, the invention comprises the devices, combinations and arrangements of parts as illustrated in the presently preferred embodiment of the invention which is hereinafter set forth in such detail as to enable those skilled in the art readily to understand the function, operation, construction and advantages of it when read in conjunction with the accompanying drawings in which:
Fig. 1 is a perspective view of a needle constructed in accordance with the present invention.
Fig. 2 is a fragmentary perspective view similar to Fig. 1, but illustrating the other side of the needle and being partly in section and on a larger scale.
Fig. 3 is a section view on the line 3--3 of Fig. 2.
In accordance with this invention there is provided an element 1 which is a needle of substantially conventional construction and includes a shank 2 having the usual flat side 3, and a blade 4 having the usual eyepointed work-penetrating end 5 with the thread-eye 6 and the longitudinally-arranged long groove 7 and short groove 8 on opposite sides thereof. The present needle is secured to the needle-bar of a sewing machine (not shown) in the usual fashion by the shank 2. Between the blade 4 and shank 2 is an intermediate portion 9 which is tapered from the shank 2 toward the blade 4. The blade 4 of the element 1 is flanked by a pair of secondary needle blades comprising a right blade 10 and a left blade 11 which are formed the same as the blade 4, i. e., each includes an eye-pointed work-penetrating end 5 with a thread-eye 6, and grooves 7 and 8. The blades 10 and 11 are arranged parallel to the blade 4 and in a single plane with and directly opposite the blade 4, and have butt ends 12 which overlap the intermediate portion 9 of the element 1. The blades 10 and 11 are fixed in this position by a connector 13 which is castin place about the overlapping portions of the butt ends 12 of the blades 10 and 11 and the intermediate portion 9. Although, of course, it is not limited to any specific material, the connector 13 is preferably formed of nylon.
As will be readily understood, the relationship between the blades 4, 10 and 11 and the loop-taker (not shown) at loop seizure is very critical. The loop-taker with which the present needle is designed to be used is a rotary hook arranged on an axis parallel to the line of feed and normal to the plane defined by the :three blades. The loop-taker seizes the loops of needle thread from the blades on the sides thereof with the short grooves 8. It is essential that the blades 4, 10 and 11 be arranged in a plane that is parallel to and spaced only a very short distance from the plane defined by the path of motion of the loop-seizing beak'of the looptaker so that the loop-seizing beak of the loop-beaker will pick the loop of needle thread successively from each of the blades. The vertical alignment of the blades is also critical in that the position of the blades vertically relative to the beak of the loop-taker must be proper to insure that the thread loop will be seized from the blade. Accordingly, it is necessary that the element 1 and the blades 10 and 11 be so mounted that they will remain in the desired position during use, it being noted that the axial thrust on the blade at work-penetration and the pull upon the needle as it is withdrawn and the forces tending to rotate the blades 10 and 11 about the element 1 are substantial. To preclude axial displacement of the blades 10 and 11 relative to the connector 13, each of the blades is provided with a dishshaped indent 14, which also acts to prevent rotation of the blades 10 and 11 in the connector 13. The element 1 is provided with an indent 15 in the side thereof which together with the converging surface of theintermediate portion 9 of the element 1 prevents displacement of the connector 13 axially relative to the element 1. The indent 15 together with the fiat side 3 which is extended through the intermediate portion 9, as can best be seen in Fig. 3, prevents rotation of the connector 13 relative to the element 1. I
By the above construction, there has been provided a three-blade needle in which the two secondary blades 10 and 11 are firmly embedded in the connector 13 and held against both axial displacement and rotation relative thereto by means of the embedded ends of the blade and the indents 14, the blades 10 and 11 being identical and thereby interchangeable which eliminates the necessity for specially designed right and left blades. The connector 13 is in turn fixed to the element 1 and is also secured against axial displacement and rotation relative thereto by the converging side walls of the intermediate portion 9, that portion of the fiat side 3 extending into said intermediate portion 9, and the indent 15.
Having thus described the nature of the invention, what I claim herein is:
1. A three-blade sewing machine needle comprising a needle element having an eye-pointed workrpenetrating blade, a shank and a tapered intermediate portion converging from said shank to said blade, said shank having a flat side extending into said intermediate portion, a pair of needle-blades arranged parallel to and in a plane with said element with one of said blades disposed upon each side of said element, each of said blades having an eye-pointed work-penetrating end and a butt end, the butt ends of said blades being arranged in overlapping relation With the intermediate portion of said element, and a connector cast in place about the butt ends of said blades and the intermediate portion of said element which are thereby embedded in said connector, the embedded butt ends of said blades and intermediate portion of said shank having indents formed therein, which indents together with the embedded ends of said blades, the converging side walls of the intermediate portion and the portion of the fiat side extending into said intermediate portion, will prevent both rotation and axial movement of said-element and blades relative to said connector.
2. A sewing machine unitary needle assembly comprising, a needle element having an eye-pointed workpenetrating blade, a shank and an intermediate portion located between said shank and said blade, said shank having a fiat side extending into said intermediate portion, a pair of secondary needle-blades arranged parallel to and in a plane with said element with one of said blades disposed upon each side of said element, each of said secondary blades having an eye-pointed workpenetrating end and a butt end, the butt ends of said secondary blades being arranged in overlapping relation with the intermediate portion of said element, and a connector cast in place about the butt ends of said secondary blades and the intermediate portion of said element which are thereby embedded in said connector, the embedded ends of said secondary blades having indents formed in the same face of the blades.
3. A sewing machine unitary needle assembly comprising, a needle element having an eye-pointed workpenetrating blade, a shank and an intermediate portion located between said shank and said blade, said shank having a flat side extending into said intermediate portion, a pair of secondary needle-blades arranged parallel to and in a plane with said element with one of said blades disposed upon each side of said element, each of said secondary blades having an eye-pointed workpenetrating end and a butt end, the butt ends of said secondary blades being arranged in overlapping relation with the intermediate portion of said element, and a connector cast in place about the butt ends of said secondary blades and the intermediate portion of said element which are thereby embedded in said connector, the embedded ends of said secondary blades having indents formed in the same face of the blades, and the intermediate portion of said needle element having an indent formed'therein and thereby providing a flat surface disposed at an angle to'the flat side of said shank.
4. A multiple blade sewing machine needle comprising a first needle having an eye-pointed work-penetrating blade, a shank for securing said needle in the needle clamp of a sewing machine, and an inter-mediate portion, a needle blade arranged in opposed spaced parallel relation relatively to the blade of said first needle and having an eye-pointed work-penetrating end and a butt end, the butt end of said blade being arranged in overlapping relation relatively to the intermediate portion of said first needle, and means for securing said first needle and said needle blade in assembled relation comprising a connector cast in place about the butt end of said blade and the intermediate portion of said first needle.
5. A multiple blade sewing machine needle in accordance with claim 4 in which the shank and the blade of said first needle'are of different diameters and the transition between the two diameters is made in the intermediate portion thereof in the area embedded in said connector.
6. A multiple "blade sewing machine needle in accordance with claim 4 in which the first needle and the needle blade are provided with a notch in the area embeddedin said connector.
References Cited in the file of this patent UNITED STATES PATENTS 437,944 Stein Oct. 7, 1890 FOREIGN PATENTS 681,698 Great Britain Oct. 29, 1952 920,222 Germany Nov. 15, 1954 921,732 Germany Dec. 23, 1954 312,141 Switzerland Feb. 29, 1956
US509654A 1955-05-19 1955-05-19 Sewing machine needle Expired - Lifetime US2834310A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227121A (en) * 1963-06-07 1966-01-04 Torrington Co Sewing machine needles and methods of forming the same
US3485195A (en) * 1967-05-09 1969-12-23 Torrington Co Tufting machine needle assembly
DE2828246A1 (en) * 1977-06-30 1979-01-04 Spencer Wright Ind Inc NEEDLE FOR TUFTING MACHINES
DE3732948A1 (en) * 1987-09-30 1989-04-20 Rhein Nadel Maschinennadel Sewing-machine needle and process for producing it

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US437944A (en) * 1890-10-07 Emil stein
GB681698A (en) * 1950-07-17 1952-10-29 Ferdinand Bernhard Schmetz An improved sewing-machine needle
DE920222C (en) * 1952-06-29 1954-11-15 Leo Lammertz Fa Sewing machine needles and methods of making the same
DE921732C (en) * 1952-08-19 1954-12-23 Leo Lammertz Fa Sewing machine needles
CH312141A (en) * 1950-07-17 1955-12-31 Bernhard Schmetz Ferdinand Sewing machine needles for making piped seams.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US437944A (en) * 1890-10-07 Emil stein
GB681698A (en) * 1950-07-17 1952-10-29 Ferdinand Bernhard Schmetz An improved sewing-machine needle
CH312141A (en) * 1950-07-17 1955-12-31 Bernhard Schmetz Ferdinand Sewing machine needles for making piped seams.
DE920222C (en) * 1952-06-29 1954-11-15 Leo Lammertz Fa Sewing machine needles and methods of making the same
DE921732C (en) * 1952-08-19 1954-12-23 Leo Lammertz Fa Sewing machine needles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227121A (en) * 1963-06-07 1966-01-04 Torrington Co Sewing machine needles and methods of forming the same
US3485195A (en) * 1967-05-09 1969-12-23 Torrington Co Tufting machine needle assembly
DE2828246A1 (en) * 1977-06-30 1979-01-04 Spencer Wright Ind Inc NEEDLE FOR TUFTING MACHINES
DE3732948A1 (en) * 1987-09-30 1989-04-20 Rhein Nadel Maschinennadel Sewing-machine needle and process for producing it

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