US3741492A - Apparatus for winding sewing thread upon bobbins - Google Patents

Apparatus for winding sewing thread upon bobbins Download PDF

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Publication number
US3741492A
US3741492A US00153288A US3741492DA US3741492A US 3741492 A US3741492 A US 3741492A US 00153288 A US00153288 A US 00153288A US 3741492D A US3741492D A US 3741492DA US 3741492 A US3741492 A US 3741492A
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United States
Prior art keywords
thread
rotor
bobbin
holding means
base structure
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Expired - Lifetime
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US00153288A
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English (en)
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E Johansson
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith

Definitions

  • Cl B65h 54/00, B65h 63/08 ehored on the bebbin- Said means comprises a spring [58] Field of Search ..242/20-24, p fastened to the rotor turning the bobbin and 3 39 2 3Q 49; 112/218 A 2525 cated thereon at a greater radius than the bobbin.
  • the thread end part stretched between the bobbin and said '5 R f en Ci d holding means can be caught by a stationary member UNITED STATES PATENTS movable into the path described by said thread end, 242 20 whereby the thread end is disengaged from the holding g f means and can be covered by the following thread 2,261,680 0 egro e turns p the bobbin.
  • the invention relates to an apparatus for winding of sewing thread upon bobbins for sewing machines, particularly for such bobbins for bottom thread as should be inserted into a shuttle or a rotary hook.
  • the apparatus constitutes a unit dependent of the sewing machine and comprises a driven rotor with a center stem" upon which one bobbin at a time can be removably attached in such a manner as to be carried along in the rotation of the rotor.
  • said problem is solved in principle, by temporarily attaching the thread end to the rotor laterally of the location of the bobbin-Then, one does not have to rely upon the friction of the first wound thread turns against the bobbin core, but the thread end will be securely held fast to the rotor until a great number of turns have been wound upon the bobbin core andthere is no longer a risk of the thread slipping thereagainst. Then the thread end is let loose, so that it will be covered by the following thread turns upon the bobbin.
  • FIG. 1 is an elevational view of a first embodiment of the apparatus
  • FIG. 2 shows a detail as viewed from the line II-II in FIG. 1,
  • FIG. 3 is a plan view of the apparatus
  • FIGS. 4 and 6 are plan views of certain parts of the apparatus shown indifferent working positions
  • FIG. is a partially sectional end view taken from the line V-V in FIG. 4,
  • FIG. 7 is an end view taken from the line VII-VII in FIG. 6, certain parts being partially broken away,
  • FIG. 8 is a fragmentary elevational view taken on the line VIII-VIII in FIG. 3 and FIG. 9 is a diagrammatic view of a second modified embodiment of the apparatus.
  • 11 designates the rotor of the apparatus which by means of a vertical shaft 13 is journalled in a hub 15 projecting from the base plate 17 of the apparatus. Attached thereto is also an electric motor 19 which turns the rotor by means of a belt transmission 21.
  • the upper end of the rotor shaft forms a center stem 23 upon which a bobbin consisting of a cylindrical core 25, a lower flatflange 27 and an upper flat flange 29, can be applied.
  • the stem 23 is split and its halves are resiliently pressed against the sleeve 25 of the bobbin, so that the bobbin is securely held but can easily be drawn off by hand when filled with thread.
  • the motor 19 is thrown-in by a microswitch 35 actuated when manually depressing an operating lever 37 which is pivoted about a vertical pin 39.
  • a coiled spring 38 fastened to a projection 41 upon the operating lever 37 tries to return the same upwardly, but normally the operating lever is locked in the position shown in FIG. 1 by means of a lever 43 which is movable in the horizontal plane and which places itself above a projection 45 upon the operating lever 37.
  • the lever 43 is under the influence of a coiled spring 47 which strives to retain the lever in the position shown in FIGS. 1 to 3.
  • the lever 43 is connected to a feeler arm 51 swingable in the horizontal plane, the end of which can swing in between the two flanges 27, 29 of the bobbin and abut against the outermost thread turns upon the bobbin.
  • the feeler arm 51 takes the position shown in FIG. 4.
  • the feeler arm is swung counter-clockwise as seen from above, and when the bobbin is full, it has swung the lever 43 connected thereto into the position shown in dotted lines in FIG. 2, in which the latter is positioned above a downwardly inclined end 53 of the projection 45.
  • the spring 38 overcomes the force of the spring 47 and returns the operating lever 37 to its uppermost position, whereby the switch is thrown out and the motor stopped. Due to inertia the rotor 11 continues to turn until a stud 55 upon its bottom face is caught by a notch 57 in the operating lever 37, whereby the rotor is stopped in a predetermined angular position.
  • the projection 45 is raised, its downwardly bent end 53 will push the lever 43 aside resulting in that the feeler arm 51 is swung further out, viz. into the position shown in FIG. 3, in which it is positioned completely beyond the bobbin so as not to prevent the removal thereof from the center stem 23.
  • rotor 11 has a recess 59 (FIGS. 4 and 5), in which the lower end flange 27 of the bobbin fits. Adjacent to and around said recess the rotor is formed with a concentric conical face 61 merging into a flat annular face 63 perpendicular to the axis of the rotor.
  • the thread end holding means Arranged at the periphery of said flat face is the thread end holding means which is an essential element of the invention.
  • the same consists of a thin flat blade spring 65 held applied to the flat face 63 of the rotor 11 by a screw 67 and guided by pins 69, 71 projecting through corresponding holes in the blade spring.
  • the spring face is of an acuate shape with the outer edge extending close to the periphery of the rotor and the inner edge concentric thereto and distant from the conical face 61.
  • the extreme end 73 of the spring is bent slightly upwards so as to form a thread-catching gap, and the spring can yield resiliently and be partly raised from the rotor face. A thread caught by said spring clip can be drawn into the resilient gap until it is stopped by the pin 69. In said position the clamping force of the spring is sufficient for securely holding the thread and for overcoming all resistances to its drawing forth.
  • the wire fork 75 which is attached to the bottom plate 17 of the apparatus by means of a post 74, consists of two legs, one above the other, the lower one 76 being situated at about the same level as the rotor face 63.
  • the knife 77 serves to sever the thread when a filled bobbin should be removed.
  • the bobbin is grasped by the hand of the operator and moved outside of the wire fork 75 in such a manner that the stretched thread is introduced into said fork and hits the knife 77 at the bottom of the fork. Simultaneously therewith the thread has been brought in under the free end of the blade spring 65. In the final position shown in FIG. 3, the severed thread end is clamped beneath said spring and extends therefrom in a straight path to the thread stretcher 33. In said path the thread lies below as well as laterally of the space 59, into which a new bobbin should be inserted, thus forming no obstacle thereto.
  • the thread end holding clip 65 is placed laterally of and at the greatest possible distance from the normal thread supply direction, i.e., as seen from the center stem 23, in a direction transverse to and preferably forming an angle of 90 to 120 to the direction towards the thread stretcher 33.
  • FIG. 3 shows the initial position in which a new and empty bobbin has been pushed upon the center stem of the rotor.
  • the motor When depressing the operating lever 37, the motor is started and begins to turn the rotor 11 in the counter-clockwise direction, as seen from above. Simultaneously the released feeler arm 51 is swung under the action of the spring 47 into abutment with the core of the bobbin (position of FIG. 4).
  • a post 81 attached to the bottom plate supports a horizontal pin 83, upon which a yoke 85 is pivoted. Extending therefrom is an arcuate metal wire forming a catch 89 for catching the thread end 79. Said catch is bent concentrically to the rotor and extends along an arc of a circle on a slightly greater radius than the conical face 61. The catch can be swung from a lifted position (FIG. 5) into a lowered position (FIG. 7) by cooperation with the feeler arm 51. The latter has a lateral projection 91 which is applied against the flat side of the yoke 85 and keeps said side vertical and thereby the catch raised as long as the feeler arm 51 still is positioned deep into the bobbin.
  • the feeler arm 51 is pushed aside and the projection 91 is retracted, so that the yoke 85 with the catch 89 drops down into the position of FIG. 7.
  • the outermost free end of the catch will then be placed in the path of the thread end 79 extended between the bobbin and the holding clip 65, so that the thread end slides up thereon and is drawn out of engagement with the clip 65. Then the free thread end will be dragged in and covered by the following winding turns up the bobbin.
  • FIG. 9 corresponds to the one just described, in respect of the design of the upper side of the rotor, the spring clip attached thereto, the feeler arm and the thread catch. Therefore, these members have been designated by the same reference numerals as in FIGS. 1 to 8.
  • the mounting of the apparatus comprises a top plate 12 having a through circular aperture 14, in which the rotor 11 is inserted so that its peripheral plane face 63 is flush with the upper face of the plate 12.
  • a spring clip 16 similar to the spring clip 65 is attached to the plate 12 by means of screws 18.
  • a pin 20 secured to the plate 12 projects through a hole 22 in the clip and forms a stop for the thread 31 when drawn into the gap of the clip.
  • the point 24 of the clip projects somewhat beyond the edge of the plate 12, which facilitates the introduction of the thread into the clip when the full bobbin is being taken out of the apparatus.
  • a fixed knife 28 by which the thread is cut in connection with the introduction of the thread into the clip 16 and the removal of the bobbin.
  • the clip 16 and the thread stretcher 33 are positioned on opposite sides of the rotor 11 and so that the thread 31 stretched in a straight path therebetween extends like a chord over the plane face of the rotor.
  • the thread' is raised slightly from the face of the plate 12 by a raised ridge 30 attached thereto. Therefore, the spring clip 65 can pass under the thread on the righthand side of rotor, whereas it will catch the thread at the left-hand side where the thread is held close to the rotor face by the fixed spring clip 16.
  • FIG. 9 differs from the embodiment first described also in that the free end of the spring clip 65 leads in the rotational movement and in that the rotor has no predetermined position of rest.
  • the clip 65 may take any position and has no hold of the thread. Only after the rotor has turned part of one revolution, the tip of the clip 65 will hit the thread still held by the fixed clip 16. This is the moment shown in FIG. 9. Next the thread will be drawn further into the gap of the spring clip 65 and when the end position therein is reached, the thread will be drawn out of the fixed clip 16. Thus the hold of the cut thread end has been transferred to the spring clip 65 on the rotor. The winding of the thread upon the bobbin and the releasing of the thread end then take place in exactly the same way as has been described with reference to FIGS. 3, 4 and 6.
  • Apparatus for winding of sewing thread upon a bobbin for a sewing machine comprising a base structure, a rotor mounted for rotation therein, a driving means for said rotor, a stem coaxially attached to said rotor and suitable for insertion into said bobbin for frictional engagement therewith, a thread end holding means attached to said rotor in a position at a greater distance from the axis of the rotor than the radius of the bobbin, a catching member carried by said base structure and mounted for displacement from an inactive position into an active position lying in the path described by the thread end stretched between the bobbin and said holding means, and means for moving said catching member into said active position for disengaging the thread end from said holding means during the run of the rotor.
  • said thread holding means comprises a blade spring, one end part thereof being connected to said rotor and another part thereof being resiliently applied against said peripheral plane face of the rotor, said spring having a bentout end for guiding the thread into a position in the gap of said holding means wherein-it is clasped with friction.
  • Apparatus as claimed inc'laim 1 further comprising a feeler member for engagement with the outermost thread turns upon the bobbin, said feeler member being operatively connected to said catching member for displacing the same into said active position when having itself been displaced by the thread a predetermined distance corresponding to a desired number of thread turns having been wound up on the bobbin.
  • Apparatus as claimed in claim 1 further comprising a second thread end holding means, said second thread end holding means being fixed to the base structure of the apparatus in a position exterior of and close to the periphery of the rotor.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US00153288A 1970-06-16 1971-06-15 Apparatus for winding sewing thread upon bobbins Expired - Lifetime US3741492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE08331/70A SE355787B (enrdf_load_stackoverflow) 1970-06-16 1970-06-16

Publications (1)

Publication Number Publication Date
US3741492A true US3741492A (en) 1973-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00153288A Expired - Lifetime US3741492A (en) 1970-06-16 1971-06-15 Apparatus for winding sewing thread upon bobbins

Country Status (8)

Country Link
US (1) US3741492A (enrdf_load_stackoverflow)
JP (1) JPS4942977B1 (enrdf_load_stackoverflow)
CH (1) CH529049A (enrdf_load_stackoverflow)
DE (1) DE2128819C3 (enrdf_load_stackoverflow)
ES (1) ES196630Y (enrdf_load_stackoverflow)
FR (1) FR2096329A5 (enrdf_load_stackoverflow)
GB (1) GB1321932A (enrdf_load_stackoverflow)
SE (1) SE355787B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646982A (en) * 1985-02-07 1987-03-03 F. Gegauf AG Bernina-Nahmaschinenfabrik Bobbin winding device for sewing machines
US5584257A (en) * 1993-08-31 1996-12-17 Juki Corporation Under thread supply apparatus
US5816512A (en) * 1996-05-31 1998-10-06 Brother Kogyo Kabushiki Kaisha Bobbin thread winding mechanism
CN103469501A (zh) * 2013-09-12 2013-12-25 浙江亚杰缝纫设备有限公司 一种光控绕线器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839679A (en) * 1994-10-26 1998-11-24 Juki Corporation Bobbin thread winding apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1805544A (en) * 1929-04-24 1931-05-19 United Shoe Machinery Corp Winding machine
US2255152A (en) * 1939-09-14 1941-09-09 White Sewing Machine Corp Bobbin winder for sewing machines
US2261680A (en) * 1939-10-14 1941-11-04 Singer Mfg Co Thread cutting and nipping device for sewing machines
US2558039A (en) * 1949-07-09 1951-06-26 Thomas E Carroll Thread holder and cutter
US2584320A (en) * 1947-10-06 1952-02-05 Armenti James Bobbin winder
GB803156A (en) * 1956-02-09 1958-10-22 Singer Mfg Co Bobbin-winder with thread-cutting device
US2867184A (en) * 1958-03-17 1959-01-06 Superior Sewing Machine & Supp Thread cutter
US2983455A (en) * 1958-09-05 1961-05-09 Singer Mfg Co Bobbin winder mechanism for sewing machines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1805544A (en) * 1929-04-24 1931-05-19 United Shoe Machinery Corp Winding machine
US2255152A (en) * 1939-09-14 1941-09-09 White Sewing Machine Corp Bobbin winder for sewing machines
US2261680A (en) * 1939-10-14 1941-11-04 Singer Mfg Co Thread cutting and nipping device for sewing machines
US2584320A (en) * 1947-10-06 1952-02-05 Armenti James Bobbin winder
US2558039A (en) * 1949-07-09 1951-06-26 Thomas E Carroll Thread holder and cutter
GB803156A (en) * 1956-02-09 1958-10-22 Singer Mfg Co Bobbin-winder with thread-cutting device
US2867184A (en) * 1958-03-17 1959-01-06 Superior Sewing Machine & Supp Thread cutter
US2983455A (en) * 1958-09-05 1961-05-09 Singer Mfg Co Bobbin winder mechanism for sewing machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646982A (en) * 1985-02-07 1987-03-03 F. Gegauf AG Bernina-Nahmaschinenfabrik Bobbin winding device for sewing machines
US5584257A (en) * 1993-08-31 1996-12-17 Juki Corporation Under thread supply apparatus
CN1080346C (zh) * 1993-08-31 2002-03-06 重机公司 向缝纫机供给下线的方法
US5816512A (en) * 1996-05-31 1998-10-06 Brother Kogyo Kabushiki Kaisha Bobbin thread winding mechanism
CN103469501A (zh) * 2013-09-12 2013-12-25 浙江亚杰缝纫设备有限公司 一种光控绕线器

Also Published As

Publication number Publication date
ES196630U (es) 1975-04-01
ES196630Y (es) 1975-08-01
DE2128819C3 (de) 1978-11-23
GB1321932A (en) 1973-07-04
DE2128819A1 (de) 1971-12-23
JPS4942977B1 (enrdf_load_stackoverflow) 1974-11-18
DE2128819B2 (de) 1978-04-06
CH529049A (de) 1972-10-15
FR2096329A5 (enrdf_load_stackoverflow) 1972-02-11
SE355787B (enrdf_load_stackoverflow) 1973-05-07

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