US2799236A - Needle operating device - Google Patents

Needle operating device Download PDF

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Publication number
US2799236A
US2799236A US507418A US50741855A US2799236A US 2799236 A US2799236 A US 2799236A US 507418 A US507418 A US 507418A US 50741855 A US50741855 A US 50741855A US 2799236 A US2799236 A US 2799236A
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US
United States
Prior art keywords
arm
needle
oscillation
axis
pivoted
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
Application number
US507418A
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English (en)
Inventor
Marforio Nerino
Biffi Giovanni
Burlone Luigi
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.)
Virginio Rimoldi and Co SpA
Original Assignee
Virginio Rimoldi and Co SpA
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 Virginio Rimoldi and Co SpA filed Critical Virginio Rimoldi and Co SpA
Application granted granted Critical
Publication of US2799236A publication Critical patent/US2799236A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/14—Needle-bar drives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/1892—Lever and slide
    • Y10T74/18928—Straight line motions

Definitions

  • This invention relates to a needle operating device for sewing machines.
  • An object of this invention is to provide a device of this kind in which the needle is reciprocated on a rectilinear path exclusively through rotating means, thereby advantageously reducing the weight of the moving parts by suppression of the needle bar, improving lubrication of moving parts and facilitating machining.
  • a further object of this invention is to provide a needle operating device as outlined above, which is simple in construction and reliable in operation.
  • the needle operating device for sewing machines ac-. cording to this invention comprises a needle actuating arm, guided at one end for substantially rectilinear motion, and pivoted at its other end to the needle, thelatter being capable of rectilinear movement in a guide, and oscillating driven member pivoted at a point intermediate between the ends of the said arm.
  • the middle line on either side of which the needle actuating arm oscillates is substantially normal tothe needle path.
  • the axis of angular oscillation of the oscillating driven member is situated on the said middle line.
  • the axis of angular oscillation of the oscillating driven member is spaced from the path of the articulation between the actuating arm and needle by half the length of the needle bar actuating arm, between the end performing a rectilinear movement and the articulation.
  • ber is spaced from the axis of the pivot connecting thesaid member to needle by about one-sixth the length of the needle actuating arm, between its end performing a rectilinear movement and the axis of articulation of the arm to the needle.
  • the maximum angle of oscillation of the driven oscillating member is about 60.
  • the guided end of the needle actuating arm is pivoted to a further arm capable of oscillation, the. axis whereofis in its middle position substantially normal to the axis of the actuating arm, the arm length being such that the movement of its end connected to the needle actuating arm is practically rectilinear.
  • Figures 1 and 2 show diagrammatically in elevational and plan view the operating principle of the needle actuating device according to this invention
  • Figures 3 and 4 show in side elevational and part sectional plan view a needle operating device according to this invention.
  • Figures 5 and 6 show in sectional view, the Figure 5 along the line V--V of the Figure 6 and the Figure 6 2 along the line VI-VI of Figure 5, a sewingmachine embodying the improvement according to this invention.
  • the dash-and-dot line 1 indicates the path of the pivot 2 connecting the needle to the actuating arm 3 which is pivoted at 4a to a crank 4 of which the oscillation shaft is denoted by 5.
  • the end 6 of the actuating arm 3 In order to obtain a rectlinear movement of the pivot 2 one of the requirements to be met is for the end 6 of the actuating arm 3 to perform a rectilinear movement in a direction substantially normal to the line 1.
  • the end 6 might be guided in a rectilinear guide.
  • the spacing a between the path of the pivot of the needle holder and the line parallel with said path ex tending through the centre of oscillation of the arm 7' is twice the spacing between the line 1 and the line parallel therewith extending through the centre of oscillation 5 of the driven crank 4.
  • the spacing between the centres of oscillation 411 and 5 equals about 4; of the spacing a.
  • the angle of angular oscillation of the crank 4 should be limited in order to maintain the path of the pivot 2' rectilinear. Conveniently, the maximum angle of oscil; lation should be 60 at the specified proportions in size of the various parts.
  • 2 5 denotes the frame of the sewing machine carrying a member 9-having a directional guide 10 for a slide 11 having secured thereto a needle 12 by a set-screw 13.
  • the slide 11 has attached thereto by means of the pivot 2 the forked end of the arm 3.
  • the end 6 of the arm 3 is hinged to the arm 7 oscillating about a pivot 8 carried by the stationary machine frame.
  • an eccentric 14 is pivoted, which is provided on the disc 15 keyed to a shaft 16 journalledin the bearing 17 carried by the machine frame 25.
  • An oil packing 18 is interposed between the bearing 17 and disc 15.
  • the shaft 16 has bolted thereto at 20 an arm 19 which is pivoted at 19ato a connecting rod 24, the big end of which is journalled on a crank 21 on the main machine shaft 22 driven by a pulley 23 by an electric motor not shown on the drawings.
  • a needle control device comprisingin combination a needle actuating arm, first'pi vots ally connected guide means forguiding-one end ofsa id arm along a first substantially rectilinear path, a needleholder pivoted to the other end of said arm, second guide means for guiding said needle-holder along a second substantially rectilinear path, a member pivoted intermediate the ends of said arm and having an axis of oscillation, means for imparting rotative oscillatory movement to said member thereby to oscillate said needle actuating arm, said member being pivotally connected to said arm at a point on said arm spaced from said axis of oscillation a selected distance for oscillating said arm on either side of a selected median plane substantially corresponding to the rectilinear path of the first mentioned end of the arm, said needle path being disposed substantially normal to the median plane on either side of which the needle actuating arm oscillates.
  • a needle control device comprising, in combination a needle actuating arm, first pivotally mounted guide means for guiding one end of said Patented July 16, 1957 arm along a first substantially rectilinear path, a needleholder pivoted to the other end of said arm, second guide means for guiding said needle-holder along a second substantially rectilinear path, a member pivoted intermediate the ends of said arm and having an axis of oscillation, means for imparting rotative oscillatory movement to said member thereby to oscillate said needle actuating arm, said member being pivotally connected to said arm at a point on said arm spaced from said axis of oscillation a selected distance for oscillating said arm on either side of a selected median plane substantially corresponding to the rectilinear path of the first mentioned end of the arm, said needle path being disposed substantially normal to the median plane on either side of which the needle actuating arm oscillates, and the axis of oscillation of the member pivoted intermediate the ends of the needle actuating arm
  • a needle control device comprising, in combination a needle actuating arm, first pivotally mounted guide means for guiding one end of said arm along a first substantially rectilinear path, a needle holder pivoted to the other end of said arm, second guide means for guiding said needle-holder along a second substan tially rectilinear path, a member pivoted intermediate the ends of said arm and having an axis of oscillation, means for imparting rotative oscillatory movement to said member thereby to oscillate said needle actuating arm, said member being pivotally connected to said arm at a point on said arm spaced from said axis of oscillation a selected distance for oscillating said arm on either side of a selected median plane substantially corresponding to the rectilinear path of the first mentioned end of the arm, said needle path being disposed substantially normal to the median plane on either side of which the needle actuating arm oscillates, the axis of oscillation of said member pivoted intermediate the ends of the needle actuating arm lying in
  • a needle control device comprising, in combination a needle actuating arm, first pivotally mounted guide means for guiding one end of said arm along a first substantially rectilinear path, a needleholder pivoted to the other end of said arm, second guide means for guiding said needle-holder along a second substantially rectilinear path, a member pivoted intermediate the ends of said arm and having an axis of oscillation, means for imparting rotative oscillatory movement to said member thereby to oscillate said needle actuating arm, said member being pivotally connected to said arm at a point on said arm spaced from said axis of oscillation a selected distance for oscillating said arm on either side of a selected median plane substantially corresponding to the rectilinear path of the first mentioned end of the arm, said first guide means and said needle-holder being pivotally connected to said arm a selected distance, and the distance between said axis of oscillation and the point of connection between said member and said arm corresponding to substantially one-sixteenth the distance along
  • a needle control device comprising, in combination a needle actuating arm, first pivotally mounted guide means for guiding one end of said arm along a first substantially rectilinear path, a needle-holder pivoted to the other end of said arm, second guide means for guiding said needle-holder along a second substan tially rectilinear path, a member pivoted intermediate the ends of said arm and having an axis of oscillation, means for imparting rotative oscillatory movement to said member through a selected angle of oscillation thereby to oscillate said needle actuatin arm, said member being pivotally connected to said arm at a point on said arm spaced from said axis of oscillation a selected distance for oscillating said arm on either side of a selected median plane substantially corresponding to the rectilinear path of the first mentioned end of the arm, said angle of oscillation of the member pivoted between the ends of said arm comprising substantially 6.
  • a needle control device comprising, in combination a needle actuating arm, first pivotally mounted guide means for guiding one end of said arm along a first substantially rectilinear path, a needleholder pivoted to the other end of said arm, second guide means for guiding said needle-holder along a second substantially rectilinear path, a member pivoted intermediate the ends of said arm and having an axis of oscillation, means for imparting rotative oscillatory movement to said member, thereby to oscillate said needle actuating arm, said member being pivotally connected to said arm at a point on said arm spaced from said axis of oscillation a selected distance for oscillating said arm on either side of a selected median plane substantially corresponding to the rectilinear path of the first mentioned end of the arm, said angle of oscillation of the member pivoted between the cnds of said arm comprising substantially 60.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US507418A 1955-02-04 1955-05-10 Needle operating device Expired - Lifetime US2799236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT328718X 1955-02-04

Publications (1)

Publication Number Publication Date
US2799236A true US2799236A (en) 1957-07-16

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ID=11236130

Family Applications (1)

Application Number Title Priority Date Filing Date
US507418A Expired - Lifetime US2799236A (en) 1955-02-04 1955-05-10 Needle operating device

Country Status (5)

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US (1) US2799236A (it)
CH (1) CH328718A (it)
DE (1) DE1139364B (it)
FR (1) FR1123101A (it)
GB (1) GB769138A (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195656A (en) * 1961-06-02 1965-07-20 Hydra Might Company Straight line earth drilling apparatus
US3645221A (en) * 1970-09-11 1972-02-29 Tokyo Juki Industrial Co Ltd Needle operation device in high-speed sewing machines
US3731643A (en) * 1971-08-06 1973-05-08 Singer Co Needle reciprocating mechanism for sewing machines
US3745951A (en) * 1971-12-30 1973-07-17 Rimoldi C Spa Virginio Needle driving device for sewing machines
US4167913A (en) * 1977-12-23 1979-09-18 Juki Co., Ltd. Transmission mechanism in a driving means for needle of sewing machines
DE3005758A1 (de) * 1979-03-08 1980-09-18 Rockwell Rimoldi Spa Vorrichtung zum betaetigen einer nadel in einer naehmaschine
DE3027310A1 (de) * 1979-07-18 1981-02-05 Rockwell Rimoldi Spa Nadelantriebsvorrichtung fuer naehmaschinen
US4259916A (en) * 1980-02-26 1981-04-07 Rockwell-Rimoldi S.P.A. Needle control device for sewing machines
US4790253A (en) * 1987-01-31 1988-12-13 Pegasus Sewing Machine Mfg. Co., Ltd. Needle driving apparatus for sewing machine
DE29819535U1 (de) * 1998-11-02 2000-03-16 KSL Keilmann Sondermaschinenbau GmbH, 64653 Lorsch Nähmaschinenkopf mit Einstichtiefen-Verstellung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1840571A (en) * 1928-11-09 1932-01-12 Singer Mfg Co Stitch-forming mechanism for sewing machines
US2184436A (en) * 1938-04-04 1939-12-26 Walter E Saxe Walking-beam and counterbalance construction
DE908438C (de) * 1949-12-18 1954-10-04 Fritz Hellige & Co G M B H Fab Naehmaschine mit hin und her gehenden schlingenbildenden Werkzeugen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE307279C (it) *
DE8172C (de) * C. A. REMPEN, in Linden vor Hannover, Deisterstrafse 9a Mechanismus zur Bewegung der Nadelstange an Nähmaschinen
US1348526A (en) * 1914-10-16 1920-08-03 Metropolitan Sewing Machine Co Sewing-machine and cutting mechanism therefor
DE321056C (de) * 1918-06-23 1920-05-10 Karel Vesely Doppelsteppstichnaehmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1840571A (en) * 1928-11-09 1932-01-12 Singer Mfg Co Stitch-forming mechanism for sewing machines
US2184436A (en) * 1938-04-04 1939-12-26 Walter E Saxe Walking-beam and counterbalance construction
DE908438C (de) * 1949-12-18 1954-10-04 Fritz Hellige & Co G M B H Fab Naehmaschine mit hin und her gehenden schlingenbildenden Werkzeugen

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195656A (en) * 1961-06-02 1965-07-20 Hydra Might Company Straight line earth drilling apparatus
US3645221A (en) * 1970-09-11 1972-02-29 Tokyo Juki Industrial Co Ltd Needle operation device in high-speed sewing machines
US3731643A (en) * 1971-08-06 1973-05-08 Singer Co Needle reciprocating mechanism for sewing machines
US3745951A (en) * 1971-12-30 1973-07-17 Rimoldi C Spa Virginio Needle driving device for sewing machines
US4167913A (en) * 1977-12-23 1979-09-18 Juki Co., Ltd. Transmission mechanism in a driving means for needle of sewing machines
DE3005758A1 (de) * 1979-03-08 1980-09-18 Rockwell Rimoldi Spa Vorrichtung zum betaetigen einer nadel in einer naehmaschine
DE3027310A1 (de) * 1979-07-18 1981-02-05 Rockwell Rimoldi Spa Nadelantriebsvorrichtung fuer naehmaschinen
FR2461771A1 (fr) * 1979-07-18 1981-02-06 Rockwell Rimoldi Spa Dispositif d'actionnement de l'aiguille d'une machine a coudre
US4259916A (en) * 1980-02-26 1981-04-07 Rockwell-Rimoldi S.P.A. Needle control device for sewing machines
US4790253A (en) * 1987-01-31 1988-12-13 Pegasus Sewing Machine Mfg. Co., Ltd. Needle driving apparatus for sewing machine
DE29819535U1 (de) * 1998-11-02 2000-03-16 KSL Keilmann Sondermaschinenbau GmbH, 64653 Lorsch Nähmaschinenkopf mit Einstichtiefen-Verstellung

Also Published As

Publication number Publication date
FR1123101A (fr) 1956-09-18
DE1139364B (de) 1962-11-08
CH328718A (it) 1958-03-31
GB769138A (en) 1957-02-27

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