US2664058A - Zig-zag stitch adjusting means - Google Patents

Zig-zag stitch adjusting means Download PDF

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Publication number
US2664058A
US2664058A US217931A US21793151A US2664058A US 2664058 A US2664058 A US 2664058A US 217931 A US217931 A US 217931A US 21793151 A US21793151 A US 21793151A US 2664058 A US2664058 A US 2664058A
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US
United States
Prior art keywords
lever
zig
shaft
arm
needle
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
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US217931A
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English (en)
Inventor
Amman Giuseppe
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.)
Fratelli Borletti SpA
Original Assignee
Flii Borletti Societa Per Azio
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
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Application filed by Flii Borletti Societa Per Azio filed Critical Flii Borletti Societa Per Azio
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Publication of US2664058A publication Critical patent/US2664058A/en
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Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement

Definitions

  • the movement .of oscillation of the needle is generally obtained by means of a bar, that is engaged with .one of its ends, fork-shaped, with an eccentric driven by the main shaft at one half of its own speed by means of a gear reduction, while at the .opposed end it is connected through a lever transmission to the support of the needle-carrying bar.
  • a bar that is engaged with .one of its ends, fork-shaped, with an eccentric driven by the main shaft at one half of its own speed by means of a gear reduction, while at the .opposed end it is connected through a lever transmission to the support of the needle-carrying bar.
  • two levers or knobs connected to the forked bar as before said bymeans of intermediate members.
  • Said levers are so ar ranged with respect to one another that a movement of one of them generally provokes an unnecessary displacement of the other one; besides, the mechanism on the whole is of a much complicated construction.
  • Said mechanism which is applicable to zig-zag sewing machi es having the needle bar actuated in a known way, by a forked bar driven by the main shaft through an ecce trio, comprises a movable guiding slot, inside of which is slidable a follower fastened to the ful rum pin of the forked bar, being connected, on one side, by means of a cross arm to a maneuvering lever apt to displace it crosswise, and on the other side, by means of a shaft co-axial with its pivot of rotation articulated at the ends so as to be susceptible of slight relative oblique and axial but not rotative displacement by means of a second maneuvering lever, that can in this way impress to it a movement of rotation around its vertical centre axis.
  • reams of a second lever can be adjusted, as needed, the amplitude of such oscillation.
  • connection between the slot and the two levers is so arranged that the maneuver of each l ver is wholly independent from the movement of the other one.
  • Fig. 2 is a detailed exploded perspective view of some elements of the mechanism
  • Fig. 3 is a fragmentary diagrammatic perspective View showing a modified form of the lever actuating the oscillating support of the needle bar;
  • Figs. 4 to 12 represent the various positions that the actuating levers, the guiding slot and the needle bar can take for obtaining the various types of zig-sag sewing.
  • Fi 3 shows the connection between lever B and support It! by means of the tzvo rrms 8 and 8' parallel to one another, of a lever pivoted on shaft 9' the function of which, analogous to the preceding one, is easily understood from Figure 3 itself.
  • Pin 5 through cursor or slider 13 (Figs. 1 and 2), is held within guiding slot ill inside of which it is free to slide and turn.
  • An element having a guiding slot i4 is carried by a pin H: which is rotatably mounted in hole 15 in one end of movable zrm ii.
  • the other end of arm I7 is rigidly connected to a vertical shaft 18, rotatably mounted in a hole of appendage l9 rigidly connected to the arm 22! of the machine.
  • lever 2i protruding through an opening in arm 20.
  • lever 2i By acting on lever 2 i. e. by causing it to rotate around the axis of shaft the latter is also forced to rotate, as well arm ll.
  • rotatable in hole h? is rigidly fastened socket 22 having slots 23.
  • a cross pin 24 carried by the ball or spherical end of a shaft 25, in such a way that shaft 25 can oscillate with respect to socket 22,
  • a ball 26 on the other end of shaft is provided with a cross pin.
  • Ball 26 is mounted in a lower socket 21 similar in shape to the socket 22.
  • Socket 2'! is machined in the end of an arm 28 rotatable on shaft 29, the latter being fixed to an appendage of arm 26 and co-axial, or simply parallel, with shaft l8.
  • Socket 2? can be moved around the axis of shaft 29 of the lever or handle 3
  • Shaft 25 thus, cannot rotate relative to sockets 22 and 2?, but can be subjected to oscillations and slight axial displacements relative to the sockets.
  • lever 8 When guiding slot 14 (Figs. 1 to 6) is in a posi tion at right angles to the medium position of lever 4 i. e. to the position indicated with thin dotted lines in Fig. 5, lever 2! is in its centre position and lever 34 in the position indicated with thin dotted lines in Fig. 6. Under these conditions, lever 8 is caused to oscillate crosswise by eccentric 3 without, however, being subjected to longitudinal displacements of arm 20; the support it of the needle arm remains, consequently, stationary, an the machine can only sew a straight centre stitch as an ordinary machine.
  • lever 1'5 of the lever 1'5 being forced to slide within guiding s which is now inclined, lever itself will chest displacements in a direction longitudinally of the arm 28, i. e. following arrow (Fig. l) and, therefore, by the intermediary of joint and lever 8, support H1 will oscillate. Consequently also the needle bar l2 will be oscillated in a i shic-n that the needle alternately will m a stitch to the right and to the left.
  • is in the all at the right position indicated by Fig. 11, in which the pin :5 has been displaced from the middle position of value an the stitch will be straight and all at the right (Fig. 9), or iu will have a side amplitude toward the left from said position, proportional to the displacement a of lever 31 (Fig. 2).
  • lever 31 (Fig. 6) is carried to the position indicated by thin dotted lines. With lever 2
  • will have to be brought all to the left as indicated in Fig. 8 and lever 3i (Fig. 9) to the position shown in thin dotted lines.
  • the actuating levers can be brought to different position in respect to arm 29 by inserting appropriate connections between shaft l8 and lever 31 and between socket 21' and. lever 3
  • a mechanism for oscillating the needle bar support, setting the field of vibration of the needle and for regulating the amplitude of the oscillations comprising an eccentric driven by the main shaft, a lever having a forked end embracing the eccentric, and transversely oscillated thereby, means connecting the other end of the lever to said needle bar support, fulcrum means intermediate the ends of said lever, a guide element having a guiding slot therein receiving said fulcrum means, a first arm mounted for swinging movement transversely and longitudinally of the lever, means mounting said guide element on the free end of said arm for rotary movement relative to said arm about an axis parallel to the axis of the fulcrum means, a second arm mounted for swinging movement about anaxis parallel to that of

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US217931A 1950-04-07 1951-03-28 Zig-zag stitch adjusting means Expired - Lifetime US2664058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT289344X 1950-04-07

Publications (1)

Publication Number Publication Date
US2664058A true US2664058A (en) 1953-12-29

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ID=11224793

Family Applications (1)

Application Number Title Priority Date Filing Date
US217931A Expired - Lifetime US2664058A (en) 1950-04-07 1951-03-28 Zig-zag stitch adjusting means

Country Status (5)

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US (1) US2664058A (xx)
BE (1) BE502065A (xx)
CH (1) CH289344A (xx)
FR (1) FR1040668A (xx)
GB (1) GB696782A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756703A (en) * 1953-10-19 1956-07-31 Singer Mfg Co Zigzag sewing machines
US2883951A (en) * 1954-03-30 1959-04-28 Flii Borletti D P A Device for actuating the needle bar of zig-zag sewing machines
US2887967A (en) * 1956-07-02 1959-05-26 Singer Mfg Co Needle-jogging mechanisms for sewing machines
US2900937A (en) * 1953-06-18 1959-08-25 Gegauf Fritz Ag Sewing machines
NL1002651C2 (nl) * 1996-03-20 1997-09-23 Electrin Holding N V Industriële naaimachine.
WO1999013147A1 (en) * 1997-09-05 1999-03-18 Electrin Holding N.V. Industrial sewing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115787202B (zh) * 2022-11-21 2023-08-29 南通新佳机电有限公司 一种可提升挑线杆摆动顺畅的绗缝机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014916A (en) * 1934-08-26 1935-09-17 Singer Mfg Co Needle-vibration controlling mechanism for zigzag-stitch sewing machines
DE695441C (de) * 1935-06-07 1940-08-24 L O Dietrich Nadelstangensteuervorrichtung fuer Zickzacknaehmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2014916A (en) * 1934-08-26 1935-09-17 Singer Mfg Co Needle-vibration controlling mechanism for zigzag-stitch sewing machines
DE695441C (de) * 1935-06-07 1940-08-24 L O Dietrich Nadelstangensteuervorrichtung fuer Zickzacknaehmaschinen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2900937A (en) * 1953-06-18 1959-08-25 Gegauf Fritz Ag Sewing machines
US2756703A (en) * 1953-10-19 1956-07-31 Singer Mfg Co Zigzag sewing machines
US2883951A (en) * 1954-03-30 1959-04-28 Flii Borletti D P A Device for actuating the needle bar of zig-zag sewing machines
US2887967A (en) * 1956-07-02 1959-05-26 Singer Mfg Co Needle-jogging mechanisms for sewing machines
NL1002651C2 (nl) * 1996-03-20 1997-09-23 Electrin Holding N V Industriële naaimachine.
WO1999013147A1 (en) * 1997-09-05 1999-03-18 Electrin Holding N.V. Industrial sewing machine

Also Published As

Publication number Publication date
BE502065A (xx)
FR1040668A (fr) 1953-10-16
CH289344A (it) 1953-03-15
GB696782A (en) 1953-09-09

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