US2158430A - Whip-stitching device - Google Patents

Whip-stitching device Download PDF

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Publication number
US2158430A
US2158430A US73750A US7375036A US2158430A US 2158430 A US2158430 A US 2158430A US 73750 A US73750 A US 73750A US 7375036 A US7375036 A US 7375036A US 2158430 A US2158430 A US 2158430A
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United States
Prior art keywords
thread
whip
arm
lever
sewing machine
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Expired - Lifetime
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US73750A
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English (en)
Inventor
Sandberg James Torsten
Bjereus Sven Ragnar
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Individual
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Individual
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Publication of US2158430A publication Critical patent/US2158430A/en
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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
    • D05B1/18—Seams for protecting or securing edges
    • D05B1/20—Overedge seams

Definitions

  • the present invention relates to devices for stitching thread carrier and the driving arm poproducing so-called whip-stitching seams, that sition of the apparatus for the introduction of is, seams comprising usual sewing machine the whip-stitching thread carrier over and under stitches combined with one or more whip-stitches the material respectively.
  • Fig. 5 is shown the positions of the whip- 5 borders of the fabric and attached alternately t0 stitching thread carrier and the sewing machine the upper and to the lower threads of the sewneedle in relation to each other and the carrying ing machine. out of the pressure foot and in this figure is
  • the principal object of the invention is to proschematically shown the position of the sewing vide a device of this kind either in the form of an machine threads and the whip-stitching thread 3 appliance to be attached to a sewing machine of in relation to each other when the seam is common type or as a complete whip-stitching formed. sewing machine, permitting in both cases high Fig.
  • FIG. 6 is a top plan showing the position of speed operati'bn such as 3000 stitches per minute, the sewing machine threads and the whip-stitch-
  • An object of the present invention is to provide ing threads in relation to each other when the 111 a device for moving in a vertical direction a seam is formed.
  • thread guide for whip-stitching thread which On the drawing, l shows a horizontal plate, will at all times work over the table of a sewing which supports the machine and which is placed machine or a corresponding plane, so that the directly on the sewing machine table 35.
  • This thread guide will be in position alternately over plate I is provided with an extension 50 ar- 20 and under the material being worked on. ranged in front of the feeding mechanism 36.
  • a vertical plate 2 projects which provide a device by which the strokes of the guide principally supports the mechanism belonging to for the whip-stitching thread can be varied in the device.
  • Two supporting pins 3 and 4 are sucha manner that in its upper position the guide arranged in this plate 2. On the latter pin 4, a 2.1
  • rocking arm 5 is pivotally arranged and provided far over the material as it does in its lowerwith a side arm 6 formed therewith which by position under the material.
  • This last mentioned means of a guide opening 7 forms the guiding device is f reat importance for o t in ng a means for a thread carrier bar 8 which moves su p formation- It operates so at the guide therethrough and has mounted on one end thereto o t e W pi g thread in its lower p0S of a holder 9 for the whip-stitching thread cartion on return obtains a retarded movement in rier in.
  • Arm 5 also is provided with. an arm I I relation to the needle carryin t h s wi provided with an opening 12.
  • FIG. 3 is a top plan of the apparatus, partly in arm 24 of the bell crank lever I7 is directed upsection. wards as the drawing shows and is at its end Fig. 4 shows a diagram concerning the whipprovided with a pin 25, which efiects a pivotal 55 connection with the link 26, which in its turn transmits the movement by the pin 21 arranged on one arm 23 of the lever 29, which turns round the pin 4.
  • the movement is further transmitted by the lower arm 3c of the lever 29 via the link 32, through the pivotal connection therewith through pin M, to the pin 33 arranged on the thread carrier bar ii.
  • the thread carrier bar 8 which is guided by the opening l, is further guided by moving through a guide 34 mounted on plate 2.
  • the cam disc t8 obtains its intermittent movement (turning) by a toothed wheel M, which also is mounted on the pin 3 and which obtains its movement from an arm is which by pin 23 is attached to the arm is, the cam disk being intermittently rocked when the arm 18 is descending.
  • the whip-stitching thread carrier is a slot and a loop for the thread 38.
  • the thread is kept stretched in a suitable manner by a spring 41 with a loop which obtains a rocking moveduring the working of the machine so that the thread is stretched and then slackened in a suitable manner during the whip-stitching.
  • the thread 35 is guided by a guide loop 35 on its way to the reel of cotton, which is suitably placed on a holder
  • the material which on the drawing is designed by numeral is suitably guided in a side direction by a plate 33 and is kept uplifted over the sewing machine table 35 by means of the extension 5% of plate i that projects beyond the feeding mechanism
  • the material is pressed down against the feeding mechanism by the pressure foot 51 arranged in a suitable manner either at the frame l, 2 or in a common way at the holder for the pressure foot of the sewing-machine.
  • Fig. 6 ii and 52 designate the upper and lower loops of the thread 33 while 43 and designate the upper and lower threads of the sewing-machine.
  • V hat we claim is:
  • a device for whip-s -tching fabric in combination with an ordinary sewing machine comprising a frame, a lever turnably mounted on said frame, a thread carrier mounted on one end of said lever for introducing a continuous thread alternately above below the fabric in back and the; in front of each piercing of the fabric by the needle of the sewing machine, a cam disk mounted on said frame and driven by the sew machine, arm connected to said lever actuated by said cam disk so as to be moved alternately into an upper and a lower position thereby causing said thread carrier to be moved alternately above and below the fabric, a pivot on said arm, a bell crank lever turnably mounted on said pivot and having its one end connected with the needle bar of the sewing machine and its other end connected to the first mentioned lever so as to impart a reciprocating motion to said thread carrier.
  • a device for whip-stitching fabric in combination with an ordinary sewing machine comprising a frame carrying a pivot, a lever turnably mounted on said frame, a thread carrier mounted on one end of said lever for introducing a cont nuous thread alternately above and below the fabric in back and then in front of each piercing of said fabric by the needle of the sewing machine, means for actuating said lever so as to impart the desired start motion to said thread carrier, comprising a cam disk turnably mounted on said frame and driven by the sewing machine, an arm mounted on said pivot on the frame and connected with said lever, said arm being actuated by said cam disk so as to cause said thread carrier to be moved alternately into positions above and below the fabric, said cam disk being arranged between the centre line of the needle of the sewing machine and said pivot.
  • a device for whip-stitching fabric in combination with an ordinary sewing machine comprising a frame, a lever turnably mounted on said frame, a thread carrier mounted on one end of said lever for introducing a continuous thread alternately above and below the fabric in back then in front of each piercing of said fabric by the needle of the sewing machine, and means for actuating said lever so as to impart the desired motion to said thread carrier, comprising a cam disk mounted on the frame and driven by the sewing machine and an arm turnably mounted on the frame and connected with said lever, said arm having a downwardly extending portion formed as a guide for said thread carrier, said arm eing actuated by said cam disk so as to cause said thread carrier to be moved alternately into positions above and below the fabric.
  • a device for whip-stitching fabric in combination with an ordinary sewing machine comprising a frame detachably mounted on the bed of the sewing machine and carrying a pivot, a lever turnably mounted on said pivot, a thread carrier mounted on one end of said lever for introducing a continuous thread alternately above :l below the fabric in back and then in front each piercing of the fabric by the needle of the sewing machine, and means for actuating said lever in order to impart the desired motion to said thread carrier, comprising a cam disk mounted on frame and driven by the sewing machine, an ar :1 turnably mounted on said pivot of the frame and actuated by said cam disk so to be moved alternately into an upper and a lower position thereby causing said t- "ead carrier to be ernately into positions above and be ow the fabric, a pivot on said arm, a bell er turnably mounted on said pivot and 5 its one end pivoted to the needle bar of i s g machine an its other end connected to sa inst-menti
  • a device for whip-stitching fabric in combination with an ordinary sewing machine comprising means for introducing a continuous thread alternately above and below the fabric in back and then in front of each piercing of the fabric by the sewing machine needle, and means for actuating said introducing means comprising a cam disk driven by the sewing machine, a pivot, an arm mounted on said pivot and actuated by said cam disk so as to cause said introducing means to be moved into position alternately above and below the fabric, a lever mounted on said pivot and connected to said introducing means, and means driven by the sewing machine giving said lever an oscillating motion and thereby said introducing means a reciprocating motion.
  • a device for whip-stitching fabric in combination with an ordinary sewing machine comprising a looper carrying the overcasting thread, a bar for supporting said looper, a pivot, an arm mounted on said pivot and connected to said looper bar, a cam disk in engagement with said arm and driven by the sewing machine so as to give said looper bar a vertical reciprocating motion, a lever mounted on said pivot and connected to said looper bar, and means driven by the sewing machine so as to give said looper bar an endwise reciprocating motion.
  • a device for whip-stitching fabric in combination with an ordinary sewing machine comprising a looper carrying the overcasting thread, a bar for supporting said looper, a pivot, an arm mounted on said pivot and formed as a guide for said looper bar, a cam disk in engagement with said arm and driven by the sewing machine so as to give said looper bar a vertical reciprocating motion, a lever mounted on said pivot and connected to said looper bar, and means driven by the sewing machine so as to give said looper bar an endwise reciprocating motion.
  • a device for Whip-stitching fabric in combination with an ordinary sewing machine comprising a frame, a lever turnably mounted on said frame, a thread carrier mounted on one end of said lever for introducing a continuous thread alternately above and below the fabric in back and then in front of each piercing of the fabric by the needle of the sewing machine, a cam disk mounted on said frame and driven by the sewing machine, an arm connected to said lever and actuated by said cam disk so as to be moved alternately into an upper and a lower position thereby causing said thread carrier to be moved alternately into positions above and below the fabric, a pivot being arranged at such a point on said arm that in its lower position the thread carrier is moved farther inwards in relation to the fabric than in its upper position, a second lever turnably mounted on said pivot and connected with said first mentioned lever and means driven by said sewing machine giving said second lever an oscillating motion and thereby said thread carrier a reciprocating motion.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US73750A 1935-04-11 1936-04-10 Whip-stitching device Expired - Lifetime US2158430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE471269X 1935-04-11

Publications (1)

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US2158430A true US2158430A (en) 1939-05-16

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ID=20310330

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Application Number Title Priority Date Filing Date
US73750A Expired - Lifetime US2158430A (en) 1935-04-11 1936-04-10 Whip-stitching device

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US (1) US2158430A (en(2012))
BE (1) BE414999A (en(2012))
DE (1) DE678781C (en(2012))
FR (1) FR806485A (en(2012))
GB (1) GB471269A (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973731A (en) * 1955-05-31 1961-03-07 Man Sew Corp Compound stitching device
FR2531460A1 (fr) * 1982-08-05 1984-02-10 Mori Katsuji Appareil a surjeter formant accessoire d'une machine a coudre

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973731A (en) * 1955-05-31 1961-03-07 Man Sew Corp Compound stitching device
FR2531460A1 (fr) * 1982-08-05 1984-02-10 Mori Katsuji Appareil a surjeter formant accessoire d'une machine a coudre

Also Published As

Publication number Publication date
FR806485A (fr) 1936-12-17
DE678781C (de) 1939-07-25
BE414999A (en(2012))
GB471269A (en) 1937-09-01

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