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US2860589A - Sewing-machine with zigzag or ornamental stitching attachment - Google Patents

Sewing-machine with zigzag or ornamental stitching attachment Download PDF

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Publication number
US2860589A
US2860589A US477689A US47768954A US2860589A US 2860589 A US2860589 A US 2860589A US 477689 A US477689 A US 477689A US 47768954 A US47768954 A US 47768954A US 2860589 A US2860589 A US 2860589A
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United States
Prior art keywords
disc
cam
machine
shaft
zigzag
Prior art date
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Expired - Lifetime
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US477689A
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English (en)
Inventor
Sixt Hans
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Individual
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Individual
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Publication date
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Publication of US2860589A publication Critical patent/US2860589A/en
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines

Definitions

  • the zigzag or ornamental stitching attachment according to the invention is essentiallycharacterized by meansthrough which, after positioning the cam disc in any desired Way on its driver axle, the coupling of both parts .and contacting against the disc of the tracer connected to the needle-bar, take place automatically upon starting the machine.
  • Fig. 1 is a side elevation of an over-hanging arm of a sewing-machine with the zigzag or ornamental stitching attachment;
  • Fig. 2 is a sectional view through a cam disc and its casing taken on the line AA of Fig. 1;
  • Figs. 3-6 are details of the attachment
  • Figs. 7 and 8 are details of a variant of the embodi ment according to Fig. 3;
  • Fig. 9 is an exploded view in perspective
  • Fig. 10 is a perspective view of the cam disc holding casing.
  • the sewing machine according to the present constructional form has two externally accessible knobs (not particularly shown in the drawing), one of which acting upon the .zigzag attachment in order to adjust the stitch width, while another knobacts on the same attachment in such a way that the zigzag stitch may be displacedto the left or right from the zero position or the straight seam.
  • a third knob acts upon the feed-dog and consequently serves to change the stitch length of the seam.
  • the following means are provided automatically to .eifectupon starting the machine--the coupling of the driver axle with the cam disc placedlthereon with the machine at rest, and also automaticallyto bring about the contacting of the cam disc with the tracer connected to .the needle-bar.
  • the driver shaft 5 for discs or cams 6 is journalled.
  • Each cam 6,. has a circumferential flange 6d to permit the respective cam to be grasped by the fingers when it is to be removed or insertedin the machine.
  • the end of the driver-shaft 5 facing the operator is designed as a stub shaft and adapted for mounting or changing thediscs, each with a different track.
  • the other end of the driver shaft 5 carries a worm 7 meshing with a wormw'heel '8 of the arm or driving shaft 9.
  • the portion of the driver shaft 5 adapted to receive the cam discs 6 has attached thereon a collar 5a which carries two diametrically oppositedogs 10 running parallel to the axis.
  • the cam disc 6 which, by preference, may consist of any hard plastic material, has at its front-end, directed towards the casing rear wall 3a, a grooved cam 6a in which the tracer 12 engages and is positivelyguided, said tracer being associated with the needle bar 11 and describedas description proceeds.
  • the cam disc 6 has two diametrically opposite tholes 6b, 60 parallel .to the .axis, which correspond with the dogs 10 of shaft 5.
  • the dogs 10 and holes 6c, 6b of the cam .disc 6 serves to couple the twoparts.
  • the opening in the casing 33 for placing the disc 6 onto the driver shaft 5 can be closed by the spring cover 41, being therefore on the one hand swivable round a hinge .13 on the flange 3b of the casing It, and, on the other hand, capable of being locked in the closed position by a spring pawl 14 with knob 15 on said casingflange 3b.
  • said flange 3b has at the respective pointa groove, While the pawl has a lifting face 14a.
  • said cover the pawl is lifted at the bottom of said groove and engages behind the flange .312 in the closed position.
  • the knob is depressed, thus disengaging the pawl and the cover 4 springs up.
  • ahelical spring 16 held by a screw 17 which, with .cover 4 closed, causes the cam disc 6 at first tosbear againstthe tracer 12.
  • the tracer 12 which cooperates with the cam groove 6a can slide longitudinally and is under the action of a helical spring 21 tending to force the tracer 12 ,out wards, i. e. towards the disc 6.
  • the cam disc 6 With the machine at rest and springcover 4 open, the cam disc 6 is simply placed on the driver axle without any definite positioning of the cam disc to be driven :by the shaft.
  • the cover When the disc .has been properly placed, the cover is closed, whereby the spring 16 presses the .disc .6 inwards and against the tracer 12.
  • the driver shaft 5 being set rotating by the machine drive. But then the disc 6 is still checkedjbyits On closure of 3 lying against the tracer, until its holes 6c, 6b register with the dogs 10 due to the force of the spring 16. Consequently the coupling of the cam disc 6 with the driver 'shaft occurs automatically as soon as the machine is started.
  • the feeler lever 18 having the tracer 12 seated thereon can oscillate about a stationary axle 22 and is pivoted on a transmission member 23 connected to the sliding block 24 of a slotted link 25.
  • the sliding block 25 gets displaced in said link 25.
  • the slotted link 25 is rotatable about its axle 27 by means of a knob (not shown) located outside the machine casing. Instead of changing the width of the zigzag stitch through the knob, it is brought about through the cam 6a, according to the embodiment shown. By adjusting the knob, the needle deflection given by the cam 6a is varied correspondingly.
  • the seam may be displaced to the left or right of the straight seam, since the link 25 is oscillated about a swivel axle 31 located outside its axle 19, i. e. to the left or right from the Zero position of the knob or straight seam.
  • the link axle 27 is in fact held by a lever piece 32 which can oscillate about the axle 31 fixed on the machine casing.
  • a bar 34 Pivotally mounted in the notched disk 33 seated on the axle of said knob is a bar 34 adapted to oscillate about a stationary axle 35. Pivoted at 36 to the arm of bar 34 is a lever piece 37 which embraces the axle 27 of the link 25.
  • the latter may advantageously consist of some transparent or plastic matter, or it may have at least one orifice permitting a view of the positioned disc 6.
  • a design is illustrated in Figs. 7 and 8.
  • the closing metal plate or spring cover 38 hinged at 13' to the machine, is slightly convex outwards and has a rim 38a roundabout with two thickenings, each on a straight portion above and below.
  • the cover 38 has two orifices 39, each covered by a transparent disk 40. Inside, each of said disks 40 rests on a thin marginal portion 38b of the spring cover 38.
  • each orifice is surrounded inside by a bead 4 1 which, upon insertion of the disk 40, is pressed flat at several places 42 so that said disk will thus be retained 'by enlargements as shown in Fig. 8 on a larger scale.
  • said disks may also be retained on the plate in some other manner.
  • a cam-controlled zigzag or ornamental stitching attachment is created, the chief merit of which resides in the fact that, when the cam disc has been applied, the seamstress need not trouble about its coupling; she has merely to put it on, to close the cover and to start the machine, whereupon the cam disc becomes coupled automatically. Opening of the cover will permit any fitted cam disc to be removed manually.
  • a wholly or partially transparent cover will enable the seamstress at any time to ascertain what cam disc has been inserted and whether the same rotates with the driver axle upon operation of the machine, without her having to open the cover for this purpose.
  • a sewing machine comprising a vertically reciprocated and variably oscillatable needle bar, independently operating means for varying the needle oscillations and including a tracer, and pattern mechanism operative jointly upon said normally independent operating means comprising a pattern actuating shaft, means for intermittently rotating the shaft, a casing provided with a hinged cover plate and mounted on the shaft, a clutch member on said shaft, a pattern disc loosely carried by said shaft and movable longitudinally thereon into and out of engagement with said clutch member, the pattern disc having a cam in the form of a groove on the face of the disc and said groove positively guiding the tracer forming part of the said independently operating means for varying said needle oscillations, and a spring on the inside of the cover engaging said pattern disc in the closed position of the cover plate to force the cam groove onto the tracer, said cover when closed causing the cam in position to be clutched and the tracer to be in its operative position.
  • a sewing machine comprising an over-hanging arm having an opening therein, a vertically reciprocated and variably oscillatable needle bar, means for varying the needle oscillations and including a tracer, a drive shaft in the arm, a pattern actuating shaft in the form of a stub shaft, means for intermittently rotating the pattern actuating shaft, a clutch member on the last-mentioned shaft, a casing provided with a hinged cover plate and mounted on the shaft, a pattern disc loosely carried by said lastmentioned shaft and movable longitudinally thereon into and out of engagement with said clutch member, the
  • pattern disc having a cam in the form of a groove on the face thereof to positively guide the tracer for varying said needle oscillations, said stub shaft, the clutch member and the pattern disc being mounted adjacent the opening in the arm, means connected to the shafts to operate the stub shaft from the drive shaft, and a spring on the inside of the cover engaging said pattern disc in the closed position of the cover plate to force the cam groove onto the tracer, said cover when closed causing the cam in position to be clutched and the tracer to be in its operative position.
  • a sewing machine in which the shaft for driving the disc is arranged accessible through an opening in an arm of the sewing machine.
  • cam side of the shaft includes a collar having therein two diametrically opposite dogs rigidly inserted parallel to the axis of the shaft, said dogs corresponding to diametrically opposite holes in the pattern disc with which said dogs register to couple the disc to the shaft.
  • a sewing machine in which a spring cover is provided for the disc and has at least one orifice to permit inspection of the disc.
  • a zigzag and ornametal stitching attachment for sewing machines applied in the arm of the machine and connected to a feeler lever and to a rod connected to oper ate the needle bar rocker comprising a casing mounted in the arm of the machine and having the feeler lever pivotally mounted to the casing, a casing provided with a hinged cover plate and mounted on the shaft, a drive axle rotatably mounted in the casing and having means to receive rotation from a driving shaft of the machine, said axle having connecting means associated therewith, and a cam disc removably connected and mounted on the axle and having means to cooperate with the connecting means on the axle, said cam disc having a cam groove therein to cooperate with the feeler lever to actuate the latter and to control the operation of the needle bar rocker in dependence of the shape of the groove, and a spring on the inside of the cover engaging said pattern disc in the closed position of the cover plate to force the cam groove onto the tracer, said cover when closed causing the cam in position to be clutched and the tracer to be in its
  • the tracer includes a feeler lever pivotally mounted in the casing and passing with clearance through a wall of the casing and cooperating with the groove in the pattern disc.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US477689A 1954-04-24 1954-12-27 Sewing-machine with zigzag or ornamental stitching attachment Expired - Lifetime US2860589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2860589X 1954-04-24

Publications (1)

Publication Number Publication Date
US2860589A true US2860589A (en) 1958-11-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US477689A Expired - Lifetime US2860589A (en) 1954-04-24 1954-12-27 Sewing-machine with zigzag or ornamental stitching attachment

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US (1) US2860589A (de)
CH (1) CH329687A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054368A (en) * 1959-10-23 1962-09-18 Necchi Spa Drive connection between a drive shaft and an interchangeable driven member, especially for the drive shaft and driven member of a sewing machine
US3161707A (en) * 1960-11-02 1964-12-15 Koppers Co Inc Process and apparatus of making large balls in a drum pelletizer
US3194196A (en) * 1962-02-26 1965-07-13 Yoshio Doi Decorative-stitching varying mechanism in zigzag sewing machines
USD691716S1 (en) 2011-08-04 2013-10-15 Tin Duc Vo Diaper

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US406277A (en) * 1889-07-02 Sewing machine
US1611372A (en) * 1924-03-15 1926-12-21 Nolde & Horst Co Control attachment for embroidery-sewing machines
DE694339C (de) * 1938-12-22 1940-07-30 Hermann Koehler Akt Ges Vorrichtung zur Erzeugung von Ziernaehten auf Zickzacknaehmaschinen
US2653557A (en) * 1949-12-17 1953-09-29 Mefina Sa Sewing machine
US2684649A (en) * 1950-07-25 1954-07-27 Vittorio Necchi S P A Device for embroidering automatically with zigzag sewing machines
US2693778A (en) * 1952-06-06 1954-11-09 Harris Carl Embroidering mechanism for zigzag sewing machines
US2755754A (en) * 1952-05-12 1956-07-24 Turissa Nachmaschinenfabrik A Sewing machine with zigzag arrangement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US406277A (en) * 1889-07-02 Sewing machine
US1611372A (en) * 1924-03-15 1926-12-21 Nolde & Horst Co Control attachment for embroidery-sewing machines
DE694339C (de) * 1938-12-22 1940-07-30 Hermann Koehler Akt Ges Vorrichtung zur Erzeugung von Ziernaehten auf Zickzacknaehmaschinen
US2653557A (en) * 1949-12-17 1953-09-29 Mefina Sa Sewing machine
US2684649A (en) * 1950-07-25 1954-07-27 Vittorio Necchi S P A Device for embroidering automatically with zigzag sewing machines
US2755754A (en) * 1952-05-12 1956-07-24 Turissa Nachmaschinenfabrik A Sewing machine with zigzag arrangement
US2693778A (en) * 1952-06-06 1954-11-09 Harris Carl Embroidering mechanism for zigzag sewing machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3054368A (en) * 1959-10-23 1962-09-18 Necchi Spa Drive connection between a drive shaft and an interchangeable driven member, especially for the drive shaft and driven member of a sewing machine
US3161707A (en) * 1960-11-02 1964-12-15 Koppers Co Inc Process and apparatus of making large balls in a drum pelletizer
US3194196A (en) * 1962-02-26 1965-07-13 Yoshio Doi Decorative-stitching varying mechanism in zigzag sewing machines
USD691716S1 (en) 2011-08-04 2013-10-15 Tin Duc Vo Diaper

Also Published As

Publication number Publication date
CH329687A (de) 1958-05-15

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