US3289902A - Method and device for threading a sewing needle - Google Patents

Method and device for threading a sewing needle Download PDF

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Publication number
US3289902A
US3289902A US434173A US43417365A US3289902A US 3289902 A US3289902 A US 3289902A US 434173 A US434173 A US 434173A US 43417365 A US43417365 A US 43417365A US 3289902 A US3289902 A US 3289902A
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US
United States
Prior art keywords
needle
thread
eye
blocks
threading
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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
US434173A
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English (en)
Inventor
Russell A Fritts
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.)
Singer Co
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Priority to US434173A priority Critical patent/US3289902A/en
Priority to FR41153A priority patent/FR89163E/fr
Priority to SE16660/65A priority patent/SE305114B/xx
Priority to DE19661660984 priority patent/DE1660984A1/de
Priority to CH537867A priority patent/CH493678A/de
Application granted granted Critical
Publication of US3289902A publication Critical patent/US3289902A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B87/00—Needle- or looper- threading devices

Definitions

  • that portion of the thread to be first introduced through the eye of the needle is completely enveloped between contiguous surfaces of a flexible resilient material which confines, supports, and lends great column strength to the enveloped thread portion. Only the thread and not the enveloping material, however, is passed through the needle eye. Threading is accomplished by orienting the needle eye in alignment with the enveloped thread and forcing the so oriented needle between the contiguous thread enveloping surfaces of the flexible material. The flexible resilient material is deflected about the needle blade, and the enveloped thread is thus supported by the flexible material to the very mouth of the needle eye.
  • the contour of the flexible material as it is deflected about the needle may be controlled by selection of the force used to urge the contiguous thread enveloping surfaces together.
  • a preferable contour is that in which the surfaces deflected apart by the needle engage the needle at the juncture of the needle exterior and the sidewalls of the needle eye.
  • FIG. 1 represents a perspective view of a needle threader embodying this invention, showing the thread being oriented therein,
  • FIG. 2 represents a perspective view of the needle threader of FIG. 1 with the thread and the needle disposed ready for threading
  • FIG. 3 represents a perspective view of the needle threader of FIG. 1 with the thread and needle disposed as the thread is introduced into the needle eye,
  • FIG. 4 represents an end elevational view of the needle threader of FIG. 3.
  • FIG. 5 represents an enlarged cross sectional view taken substantially along 55 of FIG. 3,
  • FIG. 6 represents an enlarged cross sectional view taken substantially along line 6-6 of FIG. 5,
  • FIG. 7 represents a perspective view of another needle threader embodying this invention, showing a thread positioning finger about to deposit and orient the thread between blocks of flexible resilient material,
  • FIG. 8 represents a perspective view of the needle threader of FIG. 7 with the thread positioning finger between the blocks and about to be withdrawn therefrom,
  • FIG. 9 represents a perspective view of the needle threader of FIG. 7 with the thread and the needle disposed ready for threading
  • FIG. 10 represents a perspective view of the needle threader of FIG. 7 with the thread and needle disposed as the thread is introduced into the needle eye, and
  • FIG. 11 represents an enlarged cross sectional view taken substantially along line 11-11 of FIG. 10.
  • a sewing machine needle 11, as illustrated in FIGS. 5 and 6, is formed with a pointed work penetrating extremity 12 near which begin thread clearance grooves 13 and 14 which extend along opposite sides of the needle blade.
  • the needle eye 15 is elongate lengthwise of the needle blade.
  • the sidewalls 16 and 17 of the needle eye are formed substantially in continuation of the sides of the clearance grooves 13 and 14 so tha the juncture 18 of the needle eye side walls with the exterior surface of the needle blade occurs at the edges of the thread clearance grooves 13 and 14 as illustrated in FIG. 6.
  • There exists in each size of sewing machine needle a predetermined distance between the pointed work penetrating extremity 12 and the needle eye 15.
  • Hand sewing needles although formed with an eye at the extremity opposite the pointed extremity, usually have the eye formed in substantially the same manner as that of a sewing machine needle, i.e., Within an elongated eye formed between thread clearance grooves extending along opposite sides of the needle. In each size of hand sewing needles a predetermined distance is usually maintained between the butt of the needle and the needle eye.
  • the device comprises a flat metal base 20 formed with out-turned flanges 21, 22, one at each side of the base of which flanges the free edges 23, 24, respectively, are in-turned so as to converge.
  • Constrained between the flanges 21 and 22 are a pair of blocks 25 and 26 of flexible resilient material.
  • These blocks 25 and 26 may be formed of rubber, plastic, or any other rubber-like material, as for instance, silicone rubber.
  • the contiguous faces 27 and 23 of the blocks 25 and 26 respectively are preferably tapered and may be rounded as illustrated in FIG.
  • the size of the blocks 25 and 26 and the distance between the flanges 21 and 22, is however, selected such that the flanges will exert suflicient force upon the blocks 25 and 2-6 constrained therebetween as to deform the contiguous block faces 27 and 28 into mutual engagement for a width which is at least equal to the dimension of the needle eye to be threaded taken lengthwise of the needle blade as is clearly illustrated in FIG. 5.
  • the metal base 20 is forced with up-turned extensions 30 and 31, one at each end of the base 20 of which extensions the extremities 32 and 33 provide thread guiding surfaces at opposite sides of the blocks 25 and 26 so disposed that a thread 40 which is stretched across the thread guiding surfaces 32 and 33 and between the blocks 25 and 26 will be oriented into a predetermined straight thread path along the line of the thread as illustrated in FIG. 1.
  • thread 40 after it is introduced between the blocks 25 and 26 and between the thread guiding surfaces 32 and 33 as illustrated in FIG. 1, is drawn lengthwise over one of the thread guiding surfaces, as for instance, surface 32 until the extremity 41 of the thread has been drawn between the blocks 25 and 26 as illustrated in FIG. 2.
  • the extremity 41 of the thread will then be completely enveloped between the contiguous surfaces 27 and 28 of the blocks 25 and 26, and the extremity 41 will assume a predetermined position between the blocks 25 and 26, i.e., along the line of the thread as illustrated in FIG. 1.
  • the extremity 41 of the thread enveloped between the blocks 25 and 26 be concentrated into a cross sectional shape which is not larger than the cross sectional area of the needle eye.
  • the thread may be severed cleanly to provide this concentration, or twisted together if it is of multi strand formation, and a plurality of limbs of thread may be passed simultaneously through the needle eye if this condition of concentration is met.
  • the needle to be threaded is then positioned with its point 12 abutting the base 20 of the needle threader.
  • the base 20 is located parallel to and at that dimension from the thread path which coincides with the dimension of the needle from the center of the eye 15 to the pointed extremity.
  • the needle 11 with the point 12 touching the base 20 is then turned until the needle eye extends in the direction of the thread path and the needle eye will be oriented in alignment with the thread path. This alignment can be readily sustained so long as the point 12 is maintained in engagement with the base 20.
  • needle threading is accomplished simply by effecting a relative motion of the sustained needle relatively to the blocks 25 and 26.
  • the needle in passing between the blocks 25 and 26 will deflect the contiguous thread enveloping surfaces 27 and 28 of the blocks in the manner illustrated in FIG. 6.
  • the contour of the deflected surfaces 27 and 28 of the blocks 25 and 26 immediately in front of the needle eye may be controlled so as to engage the needle exterior at the junctures 18 of the needle eye sidewalls 16 and 17 with the needle exterior.
  • the thread extremity 41 when it reaches the mouth of the needle eye as illustrated in FIG.
  • the thread extremity 41 after it has been pushed through the eye of the needle will again be enveloped by the contiguous surfaces 27 and 28'of the blocks as they converge behind the needle. Thereafter as the needle is moved relatively to the thread, the thread will be both pushed through the eye of the needle from the leading edge of the needle and pulled from the eye at the trailing edge until the needle clears the blocks 25 and 26 at which time the thread may be readily withdrawn from between the blocks.
  • FIGS. 7-11 inclusive discloses another arrangement for positioning and orienting the thread 40 between blocks 25 and 26.
  • a fiat metal base 42 is formed with out-turned flanges 43, 44, one at each side of the base. These flanges have inturned free edges 45, 46, respectively. Constrained between the flanges 43 and 44 are the blocks 25 and 26, as in the embodiment described supra.
  • a flat elongated positioning finger 47 having a V-shaped thread locating notch 48 near its free or guiding end 49 is adapted to be pivoted or otherwise shiftably supported to enable the finger to move into a position that brings the end 49 into contact with base 42 in the plane formed by the contiguous faces 27 and 28 of the blocks 25 and 26, respectively.
  • the needle 11 is adapted to move along a path between the contiguous faces 27 and 28 of the blocks 25 and 26 with the needle point 12 in contact with the base 42.
  • the distance between the apex or point at which the sides of the notch 48 converge and the end 49 of the finger 47 is made equal to the distance between the longitudinal center of the elongated eye 15 and the point 12 of the needle 11 to be threaded, such distance being indicated in the drawings by the distance between the parallel dot-dash lines A, B.
  • the line A is drawn along the face of the base 42 parallel with the line B which is drawn through the center of the needle eye 15 and passes through the apex of the notch 48 of finger 47.
  • the operator need merely drape an end portion of the thread 40 across the notch 48 (FIG. 7) so that a limb of the thread lays on each side of the finger thereby to form a thread loop, then swing the finger 47 and the two limbs of thread carried thereby in a path that brings the end 49 into contact with the base 42, and thereafter slide the finger along the sur face of the base and then between the contiguous faces 27 and 28 of blocks 25 and 26 to a predetermined point roughly half the length of the blocks (FIG. 8).
  • the finger 47 is then retracted along the same path, the pressure applied by the blocks 25 and 26 serving to restrain the thread 40 from sliding outifrom between the blocks with the retracting finger.
  • the pressure applied by the blocks 25 and 26 presses the two limbs of the thread 40 into a parallel relationship between the contiguous faces 27 and 28, as seen more clearly in FIG. 11, straddling the dot-dash line B.
  • the operator With the thread now positioned and oriented between the blocks 25 and 26 the operator has only to slide the needle between the contiguous faces 26 and 27 as in the prior described embodiment, maintaining the needle eye in alignment with the thread between the blocks 25, 26 and the two limbs of the thread 40 will pass through the needle eye 15 (FIGS. 10 and 11).
  • the needle 11 is now threaded and the operator may pull the needle and the thread away from the threader as indicated by the dotted outline of the needle and thread shown in FIG. 10.
  • the embodiments of the needle threader illustrated and described hereinabove are designed for a needle of one particular dimension, however, it Will be readily apparent that guide surfaces other than the base 20 or 42 may be provided for sustaining the needle eye in alignment with the thread path and with provision for an adjustment of the position of the guide surface relative to the thread path so as to accommodate needles of various sizes and positioning fingers dimensioned to match the needle size.
  • the method of threading the eye of a needle comprising sandwiching that portion of a length of thread which is first to be introduced through the needle eye in a predetermined thread path between opposed surfaces of a flexible resilient medium, sustaining the eye of a needle to be threaded in alignment with said predetermined thread path, and causing relative motion between said sustained needle and said flexible resilient medium to move said needle past said thread portion and deflect said flexible resilient medium from said thread portion immediately in front of said needle eye.
  • the method of threading the transverse eye of a needle having a substantially cylindrical exterior which comprises, positioning a thread extremity in a predetermined path between two opposing faces of a flexible resilient thread gripping material, sustaining said needle to be threaded with the needle eye in alignment with said predetermined thread path, shifting said sustained needle and said thread gripping material relatively past each other, and applying that force urging said opposing faces of said thread gripping material yieldingly into mutual engagement so as to envelop said thread extrirnity between said opposing faces in the absence of said needle and so as to deflectsaid opposing faces into diverging arcs each face engaging the exterior of said needle at the juncture of said needle exterior with a sidewall of said needle eye during said needle shifting step.
  • a device for threading the eye of a needle comprising, a flexible resilient medium formed with opposing surfaces, means for urging said opposing surfaces of said medium into mutual en agement, means for defining a linear thread path between said surfaces, means for sustaining a needle to be threaded with the eye of the needle in alignment with said thread path, and said sustained needle and said flexible resilient medium being relatively movable past each other in the direction of said thread path.
  • a device for threading a needle of substantially cylindrical exterior and formed with a transverse eye of which the sidewalls extend to a juncture with the needle exterior at the mouth of the eye comprising a pair of resilient thread gripping members, means supporting said thread gripping members with surfaces on each member urged into engagement, means for defining a linear thread path between said surfaces, means for sustaining a needle to be threaded with the eye of said needle in alignment with said thread path, said sustained needle and said supported thread gripping members being relatively movable in the direction of said thread path with said needle in engagement with said surfaces of each said thread gripping members, and said supported thread gripping members each having suflicient resiliency so as to engage on the leading edge of said needle at the juncture of said needle eye sidewall with said needle exterior during said 6 movement of said sustained needle relatively to said supported thread gripping members.
  • a device for threading the eye of a needle comprising a pair of flexible resilient blocks each formed with a tapered side terminating in a straight linear surface, means for supporting said blocks with said straight linear surfaces parallel and in mutual engagement, means for urging said supported blocks together to deform said tapered sides into mutual engagement for a width at least equal to the dimension of the needle eye to the thread taken lengthwise of said needle, means for defining a thread path between said supported blocks substantially coincident with said mutually engaged straight linear surfaces, means for sustaining a needle to be threaded with the eye of the needle in alignment with said thread path, and said sustained needle and said sup ported and urged blocks being relatively movable past each other in the direction of said thread path.
  • a device for threading the eye of a needle comprising, a flexible resilient medium formed with opposing surfaces, means for urging said opposing surfaces of said medium into mutual engagement, means for depositing a thread between said surfaces along a predetermined thread path, means for sustaining a needle to be threaded with the eye of the needle in alignment with said predetermined thread path, and said sustained needle and said flexible resilient medium being relatively movable past each other in the direction of said predetermined thread path.
  • a device for threading a needle of substantially cylindrical exterior and formed with a transverse eye of which the sidewalls extend to a junction with the needle exterior at the mouth of the eye comprising a pair of resilient thread gripping members, means supporting said thread gripping members with surfaces on each member urged into engagement, means for defining a predetermined thread path between said surfaces and for depositing a thread between said surfaces along said predetermined path, means for sustaining a needle to be threaded with the eye of said needle in alignment with said predetermined thread path, said sustained needle and said supported thread gripping members being relatively movable in the direction of said thread path, with said needle in engagement with said surfaces of each said thread gripping members, and said supported thread gripping members each having suflicient resiliency so as to engage on the leading edge of said needle at the junction of said needle eye sidewall with said needle exterior during said movement of said sustained needle relatively to said supported thread gripping members.
  • a device for threading the eye of a needle comprising, a flexible resilient medium formed with opposing surfaces, means for urging said opposing surfaces of said medium into mutual engagement, means for depositing and orienting a portion of a thread in a predetermined location between said surfaces along a predetermined thread path, said last named means including a movable thread carrying and positioning member adapted to direct said portion of thread to said predetermined location, means for sustaining a needle to be threaded with the eye of the needle in alignment with said thread path, and said sustained needle and said flexible resilient medium being relatively movable past each other in the direction of said thread path.
  • a device for threading the eye of a needle comprising, a flexible resilient medium formed with opposing surfaces, means for urging said opposing surfaces of said medium into mutual engagement, means for depositing a thread between said surfaces along a predetermined thread path, said last named means including a thread carrying member formed with a notch adapted to accommodate a loop of thread, means for sustaining said loop carrying member with said notch in alignment with said predetermined thread path, and said thread carrying member and said flexible resilient medium being relatively mov- 7 8 able past each other in the direction of said predetermined References Cited by the Examiner thread path, means for sustaining a needle to be threaded UNITED STATES PATENTS with the eye of the needle in alignment with said predetermined thread path, and said sustained needle and 2777623 1/1957 Bolzer 223*99 said flexible resilient medium being relatively movable 5 past each other in the direction of said predetermined JORDAN FRANKLIN P rlmary Exammer' thread path.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Sewing Machines And Sewing (AREA)
US434173A 1963-10-08 1965-02-10 Method and device for threading a sewing needle Expired - Lifetime US3289902A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US434173A US3289902A (en) 1965-02-10 1965-02-10 Method and device for threading a sewing needle
FR41153A FR89163E (fr) 1963-10-08 1965-12-07 Procédé et dispositif d'enfilage d'un fil dans une aiguille à coudre
SE16660/65A SE305114B (xx) 1965-02-10 1965-12-22
DE19661660984 DE1660984A1 (de) 1965-02-10 1966-02-04 Verfahren und Vorrichtung zum Einfaedeln einer Naehnadel
CH537867A CH493678A (de) 1965-02-10 1966-02-10 Verfahren und Vorrichtung zum Einfädeln einer Nähnadel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US434173A US3289902A (en) 1965-02-10 1965-02-10 Method and device for threading a sewing needle

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US3289902A true US3289902A (en) 1966-12-06

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US434173A Expired - Lifetime US3289902A (en) 1963-10-08 1965-02-10 Method and device for threading a sewing needle

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US (1) US3289902A (xx)
DE (1) DE1660984A1 (xx)
SE (1) SE305114B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980090A (en) * 1974-09-25 1976-09-14 Bonham David C Hair seizure and implantation method
DE3124732A1 (de) * 1980-06-24 1982-03-25 Brother Ind Ltd "nadeleinfaedelvorrichtung fuer eine naehmaschine"
US4557408A (en) * 1984-07-25 1985-12-10 Arnoldus Biemans Needle threading devices
EP0308645A1 (de) * 1987-08-28 1989-03-29 Dentaurum J.P. Winkelstroeter Kg Dehnschraube für Kieferdehnvorrichtungen
US10472754B2 (en) * 2016-02-10 2019-11-12 Suzuki Manufacturing, Ltd. Sewing machine threading device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777623A (en) * 1953-10-26 1957-01-15 Balzer Rudolf Needle threading device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777623A (en) * 1953-10-26 1957-01-15 Balzer Rudolf Needle threading device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980090A (en) * 1974-09-25 1976-09-14 Bonham David C Hair seizure and implantation method
DE3124732A1 (de) * 1980-06-24 1982-03-25 Brother Ind Ltd "nadeleinfaedelvorrichtung fuer eine naehmaschine"
US4355591A (en) * 1980-06-24 1982-10-26 Brother Kogyo Kabushiki Kaisha Needle threaders for a sewing machine
US4557408A (en) * 1984-07-25 1985-12-10 Arnoldus Biemans Needle threading devices
EP0308645A1 (de) * 1987-08-28 1989-03-29 Dentaurum J.P. Winkelstroeter Kg Dehnschraube für Kieferdehnvorrichtungen
US10472754B2 (en) * 2016-02-10 2019-11-12 Suzuki Manufacturing, Ltd. Sewing machine threading device

Also Published As

Publication number Publication date
SE305114B (xx) 1968-10-14
DE1660984A1 (de) 1971-03-25

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