EP0213084A1 - Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl. - Google Patents

Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl. Download PDF

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Publication number
EP0213084A1
EP0213084A1 EP86830121A EP86830121A EP0213084A1 EP 0213084 A1 EP0213084 A1 EP 0213084A1 EP 86830121 A EP86830121 A EP 86830121A EP 86830121 A EP86830121 A EP 86830121A EP 0213084 A1 EP0213084 A1 EP 0213084A1
Authority
EP
European Patent Office
Prior art keywords
elastic band
lace
stiff
knife
tape
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.)
Granted
Application number
EP86830121A
Other languages
English (en)
French (fr)
Other versions
EP0213084B1 (de
Inventor
Ferruccio Sacchi
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.)
RIM-SERVICE TORINO Srl
Original Assignee
RIM-SERVICE TORINO Srl
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 RIM-SERVICE TORINO Srl filed Critical RIM-SERVICE TORINO Srl
Publication of EP0213084A1 publication Critical patent/EP0213084A1/de
Application granted granted Critical
Publication of EP0213084B1 publication Critical patent/EP0213084B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet

Definitions

  • This invention concerns an improvement in or relating to pressure shoes for sewing machines, and in particular to a pressure shoe provided with a built- in cutting device.
  • the pressure shoes presently used for said operation are pressure shoes designed for the passage of the elastic band only, which is tensioned by means of a special device, and cutting of the band at the end of operations is performed by means of a separate cutting device, close to the pressure shoe, nevertheless separate therefrom.
  • An object of this invention resides in obviating the aforesaid drawbacks and providing a simple and practical device whereby the elastic band can be cut at a really minimum distance away from the needle, so that a suitable ovelap can be provided together with adequate strength of the seam, also when the latter is tensioned, while the junction that had to be provided is disguised in an optimized way.
  • the improvement in or relating to pressure shoes for sewing machines resides in that the subject pressure shoe has incorporated therein an elastic band cutting device, said device being located a short distance away from the sewing needle, which is a minimum distance if compared with the distances currently achievable with the pressure shoes presently used.
  • the subject pressure shoe is a normal sewing machine pressure shoe where provision is made on the pressure pad thereof for a slot machined in a direction at right angle to the elastic band feeding direction, and through said slot the elastic band is passed (from the top, above the pressure pad), on the downstream edge of said slot a small stationary cutting block, or counter-knife being provided, while on the upstream edge a movable knife is provided, mounted on a special stationary member, and actuated by suitable means (mechanical, pneumatic and/or the like means); the action of said movable knife against the counterknife stationary cutting edge causing the elastic band to be cut; resilient means being provided to ensure that the necessary pressure is exerted upon said pivoting knife.
  • suitable means mechanical, pneumatic and/or the like means
  • a further feature of the subject pressure shoe resides in that said pressure shoe is provided, at the design stage, with a small tube or duct wherethrough an air stream is injected to act behind the elastic band when the same is inserted through the feeding and cutting slot, to ease the elastic band through the slot and to position the same against the counter- knife; and with a transverse positioning member for said elastic band, comprising a steel wire member fastened sideways on the counter-knife and projecting downwards therefrom in order to provide a side abutment for said elastic band when passing through and sliding underneath said pressure shoe.
  • a further feature of the subject pressure shoe resides in that the cutting of the elastic band by means of the subject device is carried out at a distance of 0.5 to 1.5 cm away from the sewing needle, preferably around about 1 cm.
  • the movable knife is designed in the form of a pivoting knife, i.e. comprising a substantially vertical shaft rotatably mounted within a suitable bearing provided on the pressure shoe, and pivotable within said bearing; the base of said pivot shaft being provided with a cutting blade, at right angle to said pivot shaft, then substantially horizontal, which acts as a scissor blade upon the elastic band to be cut, the latter being inserted at that time between said blade and the stationary counter-knife cutter; at the upper end of said pivot shaft there being fastened an essentially horizontal square adtuat- ing member at right angles to said pivot shaft, which is connected at the free end thereof to the actuating means (mechanical, pneumatic and/or the like) provided for actuating said pivoting knife; the resilient means provided to ensure the necessary pressure on the pivoting knife being a coil spring installed between the support member and the blade, concentric to the pivot shaft of the pivoting knife.
  • actuating means mechanical, pneumatic and/or the like
  • the subject sewing machine pressure shoe is a substantially conventional pressure shoe 1, wherein a slot 5 is designed to be provided on the pressure pad 3 thereof, in a direction at right angle to the moving direction of elastic band 5' (fig. 1); a stationary cutting block or counterknife 7 being provided on the downstream edge of said slot, while on the upstream edge there is mounted a pivoting knife connected to a suitable stationary support 9 wherein said pivoting knife can rotate with the desired angle.
  • Said pivoting knife essentially comprises an upward pivot shaft 11, adapted to rotate, as already said, within the suitable cylindrical seat of stationary support member 9, and at the lower end of said pivot shaft a cutting blade 13 is fastened, at right angle to pivot shaft 11, while at the top end an actuating member 15 is fastened, also at right angle to pivot shaft 11.
  • actuating means which can be mechanical, pneumatic, and/or the like, according to what the user desires.
  • said means are mechanical means (member 16 connected to actuating member 15).
  • the stationary cutter 7 is fastened to the pressure pad 3 through suitable fastening means 17, which are shown as screws in the drawing.
  • the stationary support member 9 as well is fastened to pressure pad 3 through suitable fastening means, for instance the screws 19.
  • a coil spring 21 which acts upon cutting blade 13, in order to subject said blade to the desired pressure, which is required to cut the elastic band in a proper manner.
  • the pressure shoe is provided with a small air injection tube 23, which opens at 25 in slot 5; said air stream provides an easing function for passage of elastic band 5' through said slot, and it provides for positioning the same against cutting block 7.
  • steel wire 27 which projects sideways from cutting block 7 and underneath pressure pad 3; said steel wire pin 27 providing an abutment member for the elastic band, in order to avoid drifting thereof from the correct position.
  • the elastic band 5' is inserted from above through slot 5 and therefrom it is eased to pass underneath pressured pad 3 according to the normal feed direction thereof (fig. 1).
  • the elastic band is tensioned in order to provide for curling of the hem of the garment where the band is being applied.
  • the elastic band has to be cut in order to perform the overlap possibly necessary to complete the ring-like fastening thereof.
  • said stretch of elastic band free of tension, included between the cut and the intersection point of sewing needle path A with the elastic band (fig. 1) is extremely small, of the order ot about 1 cm, whereby the overlap performed over such a length is absolutely unobtrusive and does not impair quality of the garment.
  • the subject pressure shoe besides the application of an elastic band, can be used for sewing a tape of a stiff lace.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP86830121A 1985-05-13 1986-05-12 Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl. Expired EP0213084B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8567434A IT1215157B (it) 1985-05-13 1985-05-13 Perfezionamento a piedini per macchine da cucire
IT6743485 1985-05-13

Publications (2)

Publication Number Publication Date
EP0213084A1 true EP0213084A1 (de) 1987-03-04
EP0213084B1 EP0213084B1 (de) 1989-08-16

Family

ID=11302360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830121A Expired EP0213084B1 (de) 1985-05-13 1986-05-12 Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl.

Country Status (3)

Country Link
EP (1) EP0213084B1 (de)
DE (1) DE3665083D1 (de)
IT (1) IT1215157B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007128364A1 (de) * 2006-05-05 2007-11-15 Zsk Stickmaschinen Gmbh Trenn- und positioniereinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE23750C (de) * NÄHMASCHINENFABRIK JUNKER & RUH in Karlsruhe, Baden Neuerungen an dem unter Nr. 21818 patentirten Apparat zum Aufnähen von Soutache für Nähmaschinen
US3468269A (en) * 1967-05-01 1969-09-23 Frederic P Worthen Method and apparatus for cutting tape in sewing machine
US3648632A (en) * 1968-11-21 1972-03-14 Quick Service Textiles Apparatus for feeding and cutting strip material
GB1464147A (en) * 1973-12-27 1977-02-09 Rockwell Rimoldi Spa Device for cutting and inserting a ribbon underneath the presser foot of a sewing machine
GB2060722A (en) * 1979-09-20 1981-05-07 Rockwell Rimoldi Spa A sewing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE23750C (de) * NÄHMASCHINENFABRIK JUNKER & RUH in Karlsruhe, Baden Neuerungen an dem unter Nr. 21818 patentirten Apparat zum Aufnähen von Soutache für Nähmaschinen
US3468269A (en) * 1967-05-01 1969-09-23 Frederic P Worthen Method and apparatus for cutting tape in sewing machine
US3648632A (en) * 1968-11-21 1972-03-14 Quick Service Textiles Apparatus for feeding and cutting strip material
GB1464147A (en) * 1973-12-27 1977-02-09 Rockwell Rimoldi Spa Device for cutting and inserting a ribbon underneath the presser foot of a sewing machine
GB2060722A (en) * 1979-09-20 1981-05-07 Rockwell Rimoldi Spa A sewing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007128364A1 (de) * 2006-05-05 2007-11-15 Zsk Stickmaschinen Gmbh Trenn- und positioniereinrichtung

Also Published As

Publication number Publication date
IT8567434A0 (it) 1985-05-13
EP0213084B1 (de) 1989-08-16
DE3665083D1 (en) 1989-09-21
IT1215157B (it) 1990-01-31

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