CA1165184A - Hemstitching method using zig-zag sewing machine - Google Patents
Hemstitching method using zig-zag sewing machineInfo
- Publication number
- CA1165184A CA1165184A CA000368859A CA368859A CA1165184A CA 1165184 A CA1165184 A CA 1165184A CA 000368859 A CA000368859 A CA 000368859A CA 368859 A CA368859 A CA 368859A CA 1165184 A CA1165184 A CA 1165184A
- Authority
- CA
- Canada
- Prior art keywords
- stitches
- fabric
- feeding
- stitch
- point
- 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
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 41
- 238000012840 feeding operation Methods 0.000 abstract description 23
- 238000009957 hemming Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sewing Machines And Sewing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Optical Transform (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improved method of hem-stitching employing a zigzag sewing machine having a vertically and laterally reciprocating needle adapted to penetrate into a sewn fabric to form lock stitches with upper and lower threads, and having a feeding device operated to feed the fabric in one direction and in the opposite direction, the hem-stitching method comprises:
a step to produce at least two stitches at one point adjacent to the edge of the fabric with the feeding operation in one direction;
a step to produce at least two spaced apart stitches with the feeding operation in one direction, said stitches being spaced from each other in a vertical direc-tion and laterally spaced from the stitches produced at said one point, and a step to produce at least two fixing stitches with the feeding operation in one direction between the stitches produced at the one point and the stitches spaced from each other in the vertical direction and laterally spaced from the stitches at the one point, the fixing stitches being vertically spaced from each other and connected to the stitches produced at the one point with the feeding operation in one direction, and also connected to the said spaced apart stitches with the feeding operation in the opposite direction; the improved method avoids the troublesome operation of exchanging the presser foot and the need for an additional attachment in the sewing machine.
An improved method of hem-stitching employing a zigzag sewing machine having a vertically and laterally reciprocating needle adapted to penetrate into a sewn fabric to form lock stitches with upper and lower threads, and having a feeding device operated to feed the fabric in one direction and in the opposite direction, the hem-stitching method comprises:
a step to produce at least two stitches at one point adjacent to the edge of the fabric with the feeding operation in one direction;
a step to produce at least two spaced apart stitches with the feeding operation in one direction, said stitches being spaced from each other in a vertical direc-tion and laterally spaced from the stitches produced at said one point, and a step to produce at least two fixing stitches with the feeding operation in one direction between the stitches produced at the one point and the stitches spaced from each other in the vertical direction and laterally spaced from the stitches at the one point, the fixing stitches being vertically spaced from each other and connected to the stitches produced at the one point with the feeding operation in one direction, and also connected to the said spaced apart stitches with the feeding operation in the opposite direction; the improved method avoids the troublesome operation of exchanging the presser foot and the need for an additional attachment in the sewing machine.
Description
1:~6S~
The invention relates to a hemstitching method of a sewing machine, more particularly the invention relates to such a method employing a zigzag stitchins sewing machine, which produces lock stitches in the sewn matarial with the upper and lower threads.
The conventional hem-stitches have been produced by a zigzag sewing machine provided with a specific attach-ment in place of a generally used zigzag stitching presser foot. Thus the conventional hemstitching requires a troublesome operation of exchanging the presser foot and also an additional attachment obtained at the expense of a considerable production cost, including a material as well as an economical loss. In ~ddition the conventional hem-stitches are liable to be deformed and lose the hemming effect as will be described further below.
The present invention seeks to eliminate the defects and disadvantages of the prior art, and in parti-cular to provide beautiul and effecti.ve hemstitches with the generally used zig2ag stitching presser foot, instead o~ employing a separate specific attachment.
According to the invention there is provided a method o~ hem~stitching a fabric by a zig~ag sewing machinQ having means for vertically and laterally reciprocating a needle cooperating with upper and lower threads, and means for feeding the fabric in two opposite directions to form lock-stitches with sàid threads, said method comprising the periodical steps of: producing a fixing first stitch at one point adjacent to an edge of the fabric, with feeding the fabric in one direction while laterally moving the needle a short distance away from said one point; producing a second stitch with feeding the fabric in the opposite direction while laterally moving the needle a larger distance away s~
from said one point; producing a third stitch with feeding the fabric in the one direction without lateral movement of the needle; producing a fourth stitch with feeding the fabric in the opposite direction while laterally moving the needle above the larger distance towards said one point; producing a fixing fifth stitch with feeding the fabric in the one direction while laterally returning the needle about said short distance into said one point; and producing a sixth stitch with feeding the fabric in the one direction without lateral movement of the needle to a subsequent point adjacent to the edge of the fabric.
In accordance with a particular embodiment the third stitch includes an additional stitch ~ormed with feeding the fabric a short distance in the opposite direction with a short lateral movement of the needle. In another embodiment the third stitch includes two additional stitches, one being formed with feeding the fabric in the opposite direction and the other with feeding the fabric in the one direction without lateral movement of the needle.
1~51~34 The other features and advantages of the invention will be apparent from the following description of the particular and ~referred embodiments by reference to the ` attached drawings, in which:
FIGURES lA, lB and lC are plan views indicating three embodiments of hemstitches of the invention, FIGURES 2A and 2B are plan views indicating three other embodiments of hemstitches of the invention, and FIGURES 3A and 3B are plan views indicating the conventional embodiments of hem-stitches.
With further reference to the drawings K identifies a fabric to be sewn, and Tu identifies an upper thread, the lower ~read not being shown. The reference point marks ~l~;iS~ ~
show the stitches, and the reference numbers l, 2, 3, 4, ....
show a sequence of stitahes. Figures lA, lB and lC show the hemstitches, in which the right side row of stitches are located inside of the edge of the sewn fabric K.
Figures 2A, 2B and 2C show the hemstitches, in which the right side row of stitches are located just outside of the edge of the sewn fabric K.
Figure 3A shows the conventional hemstitches, in which the right side row of stitches are loGated inside of the edge of the sewn fabric, and Figure 3B shows the hem-stitches of Figure 3A, in which the right side row of stitches are located just outside of the sewn fabric K.
As is seen, a problem arises in the hemstitches of Figure 3B. Namely, the groups of three stitches are concentrated to the points each opposite to the fixed leftside row of stitches respectively. Therefore the laterally connected threads Tu are slackened. Further, since the groups of three stitches ~l, 2, 3, 7, 8, 9; 13, 14, 15; ..... ) are not connected to each other by vertical threads along the edge of the sewn fabric K, these groups of three stitches are not fixed and are liable to move verticall~ along the edge of the fabric K, and therefore the fabric edge will come to be frayed. Thus the hemstitches in Figure 3B will lose the substantial hemming effect.
In contrast to the prior methods of hemstitching as shown in Figure 3, the method of the invention as shown in Figures l and 2 provide a more reliable and beautiful hemming effect. According to the embodiments of the invention shown in Figures lA and 2A the stitch from l to
The invention relates to a hemstitching method of a sewing machine, more particularly the invention relates to such a method employing a zigzag stitchins sewing machine, which produces lock stitches in the sewn matarial with the upper and lower threads.
The conventional hem-stitches have been produced by a zigzag sewing machine provided with a specific attach-ment in place of a generally used zigzag stitching presser foot. Thus the conventional hemstitching requires a troublesome operation of exchanging the presser foot and also an additional attachment obtained at the expense of a considerable production cost, including a material as well as an economical loss. In ~ddition the conventional hem-stitches are liable to be deformed and lose the hemming effect as will be described further below.
The present invention seeks to eliminate the defects and disadvantages of the prior art, and in parti-cular to provide beautiul and effecti.ve hemstitches with the generally used zig2ag stitching presser foot, instead o~ employing a separate specific attachment.
According to the invention there is provided a method o~ hem~stitching a fabric by a zig~ag sewing machinQ having means for vertically and laterally reciprocating a needle cooperating with upper and lower threads, and means for feeding the fabric in two opposite directions to form lock-stitches with sàid threads, said method comprising the periodical steps of: producing a fixing first stitch at one point adjacent to an edge of the fabric, with feeding the fabric in one direction while laterally moving the needle a short distance away from said one point; producing a second stitch with feeding the fabric in the opposite direction while laterally moving the needle a larger distance away s~
from said one point; producing a third stitch with feeding the fabric in the one direction without lateral movement of the needle; producing a fourth stitch with feeding the fabric in the opposite direction while laterally moving the needle above the larger distance towards said one point; producing a fixing fifth stitch with feeding the fabric in the one direction while laterally returning the needle about said short distance into said one point; and producing a sixth stitch with feeding the fabric in the one direction without lateral movement of the needle to a subsequent point adjacent to the edge of the fabric.
In accordance with a particular embodiment the third stitch includes an additional stitch ~ormed with feeding the fabric a short distance in the opposite direction with a short lateral movement of the needle. In another embodiment the third stitch includes two additional stitches, one being formed with feeding the fabric in the opposite direction and the other with feeding the fabric in the one direction without lateral movement of the needle.
1~51~34 The other features and advantages of the invention will be apparent from the following description of the particular and ~referred embodiments by reference to the ` attached drawings, in which:
FIGURES lA, lB and lC are plan views indicating three embodiments of hemstitches of the invention, FIGURES 2A and 2B are plan views indicating three other embodiments of hemstitches of the invention, and FIGURES 3A and 3B are plan views indicating the conventional embodiments of hem-stitches.
With further reference to the drawings K identifies a fabric to be sewn, and Tu identifies an upper thread, the lower ~read not being shown. The reference point marks ~l~;iS~ ~
show the stitches, and the reference numbers l, 2, 3, 4, ....
show a sequence of stitahes. Figures lA, lB and lC show the hemstitches, in which the right side row of stitches are located inside of the edge of the sewn fabric K.
Figures 2A, 2B and 2C show the hemstitches, in which the right side row of stitches are located just outside of the edge of the sewn fabric K.
Figure 3A shows the conventional hemstitches, in which the right side row of stitches are loGated inside of the edge of the sewn fabric, and Figure 3B shows the hem-stitches of Figure 3A, in which the right side row of stitches are located just outside of the sewn fabric K.
As is seen, a problem arises in the hemstitches of Figure 3B. Namely, the groups of three stitches are concentrated to the points each opposite to the fixed leftside row of stitches respectively. Therefore the laterally connected threads Tu are slackened. Further, since the groups of three stitches ~l, 2, 3, 7, 8, 9; 13, 14, 15; ..... ) are not connected to each other by vertical threads along the edge of the sewn fabric K, these groups of three stitches are not fixed and are liable to move verticall~ along the edge of the fabric K, and therefore the fabric edge will come to be frayed. Thus the hemstitches in Figure 3B will lose the substantial hemming effect.
In contrast to the prior methods of hemstitching as shown in Figure 3, the method of the invention as shown in Figures l and 2 provide a more reliable and beautiful hemming effect. According to the embodiments of the invention shown in Figures lA and 2A the stitch from l to
2 is produced with the forward feeding operation of the sewing machine. The stitch from 2 to 3 is produced with the rearward feeding operation. The stitch from 3 to 4 is s~
produced with the forward feeding operation. The stitch from 4 to 5 is produced with the rearward feeding operation.
The stitches from 5 to 6 and 7 are produced with the forward feeding oper~tion. Such a sequence of stitches is produced in one cycle operation of the sewing machine which is repeated.
According to the emhodiments of the invention shown in Figures lB and 2B, the stitches from 1 to 2 and 3 are produced with the forward feeding operation of the sewing machine. The stitch from 3 to 4 is produced with the rearward feeding operation. ~he stitch from 4 to 5 is produced with the forward feeding operation. The stitch from 5 to 6 is produced with the rearward feeding operation.
The stitch from 6 to 7 is produced with the forward feeding operation, and the stitch from 7 to 8 is produced with the rearward feeding operation. Then the stitches from 8 to 9 and 10 are produced with the forward feeding operation.
Such a sequence of stitches is produced in one cycle operation of the sewing machine which is repeated as well.
According to the embodiments of the invention shown in Figures lC and 2C, the stitch from 1 to 2 is pro-duced with the ~orward feeding operation of the sewing machine. The stitch from 2 to 3 is produced with the rear-ward feeding operation. The stitches from 3 to 4, 5 and 6 are produced with the forward, rearward and forward feeding operations respectively. Then the stitches from 6 to 7, 8 and 9 are produced with the rearward, and forward feeding operations respectively. Such a sequence of stitches is produced in one cycle operation of the sewing machine which is repeated as well.
As is more particularly shown in Figures 2A, 2B
and 2C, all the stitches located outside of the edge of the ~L6S~
fabric on the right side thereof, for example, the stitches (1, 6), (7, 12),(13, 18), are connected to the stitches located just inside of the edge of the fabric, for example, the stitches (5, 2), (11, 8), (17, 14), and also vertically connected to each other along the edge of the fabric.
Therefore, all the stitches are fixed, and the threads between the stitches will not be slacXened. Thus the embodiments of the invention all reliably provided a better hemming effect.
In this connection, the sequence of the stitches in Figures 3~ and 3B is as follows~ The stitches from 1 to 2 and 3 are produced with the forward feeding operation of the sewing machine. The stitches from 3 to 4, 5 and 6 are produced with the rearward, forward and forward feeding operations respectively, and the stitch from 6 to 7 is produced with the rearward feeding operation. Thus these stitches are cyclically and repeatedly produced.
; In the embodiment of the invention illustrated Figures LA and 2A, the at least two stitches at one point 20 adjacent to the edge of the fabric are exemplified by stitches 1, 6, the at least two spaced apart stitches are exemplified by stitches 3, 4; and the at least two fixing stitches are exemplified by stitches 2, 5.
produced with the forward feeding operation. The stitch from 4 to 5 is produced with the rearward feeding operation.
The stitches from 5 to 6 and 7 are produced with the forward feeding oper~tion. Such a sequence of stitches is produced in one cycle operation of the sewing machine which is repeated.
According to the emhodiments of the invention shown in Figures lB and 2B, the stitches from 1 to 2 and 3 are produced with the forward feeding operation of the sewing machine. The stitch from 3 to 4 is produced with the rearward feeding operation. ~he stitch from 4 to 5 is produced with the forward feeding operation. The stitch from 5 to 6 is produced with the rearward feeding operation.
The stitch from 6 to 7 is produced with the forward feeding operation, and the stitch from 7 to 8 is produced with the rearward feeding operation. Then the stitches from 8 to 9 and 10 are produced with the forward feeding operation.
Such a sequence of stitches is produced in one cycle operation of the sewing machine which is repeated as well.
According to the embodiments of the invention shown in Figures lC and 2C, the stitch from 1 to 2 is pro-duced with the ~orward feeding operation of the sewing machine. The stitch from 2 to 3 is produced with the rear-ward feeding operation. The stitches from 3 to 4, 5 and 6 are produced with the forward, rearward and forward feeding operations respectively. Then the stitches from 6 to 7, 8 and 9 are produced with the rearward, and forward feeding operations respectively. Such a sequence of stitches is produced in one cycle operation of the sewing machine which is repeated as well.
As is more particularly shown in Figures 2A, 2B
and 2C, all the stitches located outside of the edge of the ~L6S~
fabric on the right side thereof, for example, the stitches (1, 6), (7, 12),(13, 18), are connected to the stitches located just inside of the edge of the fabric, for example, the stitches (5, 2), (11, 8), (17, 14), and also vertically connected to each other along the edge of the fabric.
Therefore, all the stitches are fixed, and the threads between the stitches will not be slacXened. Thus the embodiments of the invention all reliably provided a better hemming effect.
In this connection, the sequence of the stitches in Figures 3~ and 3B is as follows~ The stitches from 1 to 2 and 3 are produced with the forward feeding operation of the sewing machine. The stitches from 3 to 4, 5 and 6 are produced with the rearward, forward and forward feeding operations respectively, and the stitch from 6 to 7 is produced with the rearward feeding operation. Thus these stitches are cyclically and repeatedly produced.
; In the embodiment of the invention illustrated Figures LA and 2A, the at least two stitches at one point 20 adjacent to the edge of the fabric are exemplified by stitches 1, 6, the at least two spaced apart stitches are exemplified by stitches 3, 4; and the at least two fixing stitches are exemplified by stitches 2, 5.
Claims (3)
1. A method of hem-stitching a fabric by a zig-zag sewing machine having means for vertically and laterally reciprocating a needle cooperating with upper and lower threads, and means for feeding the fabric in two opposite directions to form lock-stitches with said threads, said method comprising the periodical steps of:
producing a fixing first stitch at one point adjacent to an edge of the fabric, with feeding the fabric in one direction while laterally moving the needle a short distance away from said one point;
producing a second stitch with feeding the fabric in the opposite direction while laterally moving the needle a larger distance away from said one point;
producing a third stitch with feeding the fabric in the one direction without lateral movement of the needle, producing a fourth stitch with feeding the fabric in the opposite direction while laterally moving the needle about the larger distance towards said one point;
producing a fixing fifth stitch with feeding the fabric in the one direction while laterally returning the needle about said short distance into said one point; and producing a sixth stitch with feeding the fabric in the one direction without lateral movement of the needle to a subsequent point adjacent to the edge of the fabric.
producing a fixing first stitch at one point adjacent to an edge of the fabric, with feeding the fabric in one direction while laterally moving the needle a short distance away from said one point;
producing a second stitch with feeding the fabric in the opposite direction while laterally moving the needle a larger distance away from said one point;
producing a third stitch with feeding the fabric in the one direction without lateral movement of the needle, producing a fourth stitch with feeding the fabric in the opposite direction while laterally moving the needle about the larger distance towards said one point;
producing a fixing fifth stitch with feeding the fabric in the one direction while laterally returning the needle about said short distance into said one point; and producing a sixth stitch with feeding the fabric in the one direction without lateral movement of the needle to a subsequent point adjacent to the edge of the fabric.
2. A method as defined in claim 1, wherein said third stitch includes an additional stitch formed with feeding the fabric a short distance in the opposite direction with a short lateral movement of the needle.
3. A method as defined in claim 1, wherein said third stitch includes two additional stitches, one being formed with feeding the fabric in the opposite direction and the other with feeding the fabric in the one direction without lateral movement of the needle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5416 | 1980-01-21 | ||
| JP541680A JPS56103319A (en) | 1980-01-21 | 1980-01-21 | Universal photosensor and sensing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1165184A true CA1165184A (en) | 1984-04-10 |
Family
ID=11610536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000368859A Expired CA1165184A (en) | 1980-01-21 | 1981-01-20 | Hemstitching method using zig-zag sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS56103319A (en) |
| CA (1) | CA1165184A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57156556U (en) * | 1981-03-25 | 1982-10-01 | ||
| SE430825B (en) * | 1982-05-27 | 1983-12-12 | Asea Ab | FIBER OPTICAL SENSOR FOR SATURING DYNAMIC MOVEMENTS |
| JPS59104511A (en) * | 1982-12-06 | 1984-06-16 | Nippon Sheet Glass Co Ltd | Pressure sensor |
| JPH0325132U (en) * | 1990-05-10 | 1991-03-14 | ||
| DE4105270A1 (en) * | 1991-02-20 | 1992-08-27 | Max Planck Gesellschaft | OPTICAL WAY OR DIMENSION MEASUREMENT METHOD AND OPTICAL WAY OR DIMENSION METER |
-
1980
- 1980-01-21 JP JP541680A patent/JPS56103319A/en active Pending
-
1981
- 1981-01-20 CA CA000368859A patent/CA1165184A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56103319A (en) | 1981-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6263815B1 (en) | Sewing system and sewing method | |
| US5517933A (en) | Cover thread assist member | |
| US5505150A (en) | Method and apparatus for facilitating loop take time adjustment in multi-needle quilting machine | |
| EP1709230B1 (en) | Automatic multi-function multi-needle sewingmachine and relative sewing method | |
| US3753410A (en) | Single thread chainstitch fittings for two thread chainstitch sewing machine | |
| CA1165184A (en) | Hemstitching method using zig-zag sewing machine | |
| CA1186955A (en) | Method for producing hemstitches by zigzag sewing machine and a hemstitched fabric produced thereby | |
| US4375198A (en) | Hemstitching method of sewing machine | |
| US4322956A (en) | Warp knitting machine arrangement | |
| CN114262991B (en) | Template machine for three-dimensional sewing | |
| EP1113100A3 (en) | Needle thread guide device for double chain stitch sewing machine | |
| SU1498845A1 (en) | Method of producing panty hoses | |
| EP0132466B1 (en) | Apparatus for producing a seam | |
| CA1071029A (en) | Apparatus for affixing slide fastener elements to fabric | |
| KR100309198B1 (en) | Quilting Machine | |
| CN218466094U (en) | Double-needle sewing module with adjustable interval and double-needle sewing machine | |
| CN2128639Y (en) | Compound embroidering apparatus for embroidery machine | |
| CN210104219U (en) | Textile equipment | |
| RU2068898C1 (en) | Method for forming stitching bifilar line from similar shape stitches of different filaments | |
| KR800000738B1 (en) | Continuous forming method of zigzag pattern on the cloths | |
| JPH0344547B2 (en) | ||
| KR930005115B1 (en) | Sewing machine for emboidery | |
| EP0196606B1 (en) | Device for retaining a tailoring fabric in pick-up sewing | |
| GB1038960A (en) | Improvements in or relating to sewing machines | |
| JP2920615B2 (en) | Method of sewing a plurality of attachment / detachments to tape simultaneously in multiple stages and sewing machine used for the sewing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |