EP0112949A1 - Sewing method and machine - Google Patents
Sewing method and machine Download PDFInfo
- Publication number
- EP0112949A1 EP0112949A1 EP82307007A EP82307007A EP0112949A1 EP 0112949 A1 EP0112949 A1 EP 0112949A1 EP 82307007 A EP82307007 A EP 82307007A EP 82307007 A EP82307007 A EP 82307007A EP 0112949 A1 EP0112949 A1 EP 0112949A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- mechanical oscillations
- reciprocation
- cycle
- reciprocating
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B81/00—Sewing machines incorporating devices serving purposes other than sewing, e.g. for blowing air, for grinding
Definitions
- the present invention relates to the sewing art and, more particularly, to improvements in a sewing method and apparatus wherein a needle carrying a thread is axially reciprocated into and through a sewable material, e.g. cloth, leather or paper, which is moving relative to the axis of needle, to stitch the material.
- a needle carrying a thread is axially reciprocated into and through a sewable material, e.g. cloth, leather or paper, which is moving relative to the axis of needle, to stitch the material.
- Another important object of the present invention is to provide a relatively simple and compact sewing machine for carrying out the improved method described.
- a further important object of the present invention is to provide a sewing machine as described which has one or more additional functions of cutting, welding and marking sewable or sewed materials.
- a sewing method wherein a needle carrying a thread is axially reciprocated into and through a sewable material moving relative to the axis of the needle to stitch the material, which method comprises imparting high-frequency mechanical oscillations to the reciprocating needle substantially in a direction of the reciprocation.
- the mechanical oscillations imparted to said reciprocating needle are produced or intensified selectively during the advance stroke of each cycle of the needle reciprocation.
- a load of the needle experienced from the material during each cycle of the needle reciprocation is sensed and, when a predetermined change in the load is sensed, the amplitude of the mechanical oscillations is increased from nil or a predetermined minimum level.
- the invention also provides, in a second aspect thereof, a sewing machine wherein, when in operation, a needle carrying a thread is axially reciprocated into and through a sewable material moving relative to the axis of the needle to stitch the material, which machine includes means for imparting high-frequency mechanical oscillations to the reciprocating needle substantially in a direction of the reciprocation.
- the machine further comprises means associated with the said means for producing or intensifying the mechanical oscillations imparted to the reciprocating needle selectively during at least a time period in which the needle is advanced into and through the material in each cycle of the needle reciprocation.
- the oscillation means may comprise an electromechanical transducer connectable in an oscillation transmitting relationship with said needle and a power supply for energizing the electromechanical transducer to impart said mechanical vibrations to said reciprocating needle.
- the machine may further comprise sensing means responsive to a load experienced by the needle from the material during each cycle of the needle reciprocation and control means responsive to an increase in the load for controlling the power supply to produce or intensify the mechanical oscillations imparted to the needle selectively during at least a time period in which the needle is advanced into and through the material in each cycle of the needle reciprocation.
- a sewing machine may have a conventional basic structure and makes use of a needle 1 which is formed at a free end portion thereof with an aperture 1a having a thread (not shown) passed therethrough.
- the needle 1 is securely held by means of a chuck 2 to an end (lower) portion of a rod 3.
- the needle 1 is here supported coaxially with the rod 3 and may extend vertically, perpendicularly to a material 4, e.g. cloth, leather or paper, to be stitched.
- the rod 3 is supported by a pair of bearing assemblies 5 so as to be vertically movable up and down or capable of vertical reciprocation, and is held thereby against lateral movement and rotation.
- the rod 3 is vertically or axially reciprocated by a motor 6 via a crank 7 including a crankshaft 7a to which the output shaft of the motor 6 is drivingly coupled via a gear transmission (not shown) and a crank pin 7b secured to the rod 3.
- the needle 1 is thus axially reciprocated into and through the material 4 moving manually or otherwise relative to the axis of the needle 1 to stitch the material 4.
- an electromechanical transducer 8 Shown secured to the upper end of the rod 3 is an electromechanical transducer 8 which is energized by a power supply unit 9 to impart high-frequency mechanical oscillations to the reciprocating needle 1 in its axial or longitudinal direction.
- the transducer 8 and the power supply unit 9 themselves are conventional in design and are commercially available.
- the power supply unit 9 is here mounted on a casing 10 secured to a frame 11 of the machine which has also the bearing assemblies 5 secured thereto.
- the transducer 8 is secured to the rod 3 by means of a bolt 12.
- the rod 3 is configured to serve as a horn for propagating and amplifying sonic or ultrasonic oscillatory signals produced in the transducer 8 to the needle 1.
- the motor 6 is accommodated on a suitable support within the casing 10.
- the reciprocating needle 1, according to the present invention is axially oscillated with an amplitude of the oscillations, for example, of 20 ⁇ m. This results in an oscillatory advancement of the needle 1 in each cycle of reciprocation in which an oscillation occurs each time the needle advances by a distance of 20 to 30 ⁇ m. During the advance stroke in each cycle of reciprocation, a plurality of oscillations should be experienced by the needle 1.
- the mechanical oscillations imparted to the reciprocating needle 1 are imparted selectively during the advance stroke of each cycle of needle reciprocation.
- the mechanical oscillations may be damped selectively during the retraction stroke of each cycle of needle reciprocation.
- FIG. 2 there is shown a circuit arrangement which enables such a modified mode of imparting mechanical oscillations to the reciprocating needle 1 to be executed.
- a sensor 12 is associated with the motor 6 to measure changes in the load of the crank 7 connected to the output of the motor 6.
- FIG. 3 shows in graph (A) how the load changes over the advance strokes (Ta) and retraction strokes (Tr) in the reciprocation of the needle through the material 4.
- the sensor 12 responsive to the changes in the load provides switching or control signals which act on the power supply 9 to actuate or increase the vibrational amplitude of the transducer 8 selectively during the advance stroke of each cycle of needle reciprocation.
- 3(B) shows a resulting controlled mode of mechanical oscillations in which the reciprocating needle 1 is mechanically oscillated selectively during the advance stroke.
- a controlled mode is advantageous in that it achieves results substantially same as where the reciprocating needle 1 is oscillated over the entire cycles of reciprocation and at the same time significantly reduces noises produced by the needle oscillations.
- FIG. 3 it is shown that the amplitude of mechanical vibrations is maximized when the needle 1 ' experiences the highest magnitude of load.
- Alternative manners of sensing the changes in the load include provision of a strain gauge on an element in the crank 7 such as on the crankshaft 7a to measure strains thereof.
- a sewing machine as described may have one or more additional functions of cutting, welding and marking sewable materials 4.
- the casing 10 is securely carried by a collar 13 which is rotatably fitted onto a column 14.
- the collar 14 is designed to carry further frames 15 and 16 by means of arms 17 and 18, respectively, which are both secured to the collar 13.
- the frames 15 and 16 are provided to carry sonic or ultrasonic cutting and welding/marking tools 19 and 20 as shown in FIGS. 5 and 6, respectively.
- the cutting tool 19 shown in FIG. 5 comprises a cutter 21 having a cutting edge 21a and secured by means of a bolt to holder 22 in the form of a horn at one end thereof which is of smaller cross-section.
- the other (upper) end of the horn holder 22 has an electrochemical transducer 23 secured thereto by means of a bolt.
- the cutting tool 19 is supported in the frame 15 so as to be movable up and down and vertically positionable to locate the edge 21a in cutting relationship with the sewable or sewed material 4.
- the transducer 23 is energized by a power supply 24 (FIG. 4) to impart high-frequency mechanical oscillations to the edge 21a via the amplifier horn holder 22 to cut the material 4 which is moved along a desired cutting path.
- the welding tool 20 in FIG. 6 may be used to weld pieces of thermoplastic resinous, sewable or sewed material(s) at its free end (lower) portion and is secured by means of a bolt to a horn holder 26 at one end thereof which has a smaller cross-section.
- the other (upper) end of the horn holder 26 here again has an electromechanical transducer 27 secured thereto by means of a bolt.
- the welding tool 20 is supported in the frame 16 so as to be movable up and down and vertically positionable to locate the shoe 25a in a welding relationship with two or more overlapped pieces of the sewed or sewable material(s) 4.
- the transducer 27 is energized by a power supply 28 (FIG. 4) to impart high-frequency mechanical oscillations to the shoe 25a via the amplifier horn 26 to weld the overlapped pieces together which may be moved along a desired welding path. A desired mark may be marked as well in this manner.
Abstract
Description
- The present invention relates to the sewing art and, more particularly, to improvements in a sewing method and apparatus wherein a needle carrying a thread is axially reciprocated into and through a sewable material, e.g. cloth, leather or paper, which is moving relative to the axis of needle, to stitch the material.
- It is an object of the present invention to provide an improved sewing method of the type described, which method enables practically any sewable material, even thick and/or hard, to be stitched with greater smoothness and ease and at a greater rate than heretofore.
- Another important object of the present invention is to provide a relatively simple and compact sewing machine for carrying out the improved method described.
- A further important object of the present invention is to provide a sewing machine as described which has one or more additional functions of cutting, welding and marking sewable or sewed materials.
- In accordance with the present invention . there is provided, in a first aspect thereof, a sewing method wherein a needle carrying a thread is axially reciprocated into and through a sewable material moving relative to the axis of the needle to stitch the material, which method comprises imparting high-frequency mechanical oscillations to the reciprocating needle substantially in a direction of the reciprocation.
- Preferably, the mechanical oscillations imparted to said reciprocating needle are produced or intensified selectively during the advance stroke of each cycle of the needle reciprocation. To this end, a load of the needle experienced from the material during each cycle of the needle reciprocation is sensed and, when a predetermined change in the load is sensed, the amplitude of the mechanical oscillations is increased from nil or a predetermined minimum level.
- The invention also provides, in a second aspect thereof, a sewing machine wherein, when in operation, a needle carrying a thread is axially reciprocated into and through a sewable material moving relative to the axis of the needle to stitch the material, which machine includes means for imparting high-frequency mechanical oscillations to the reciprocating needle substantially in a direction of the reciprocation. Preferably, the machine further comprises means associated with the said means for producing or intensifying the mechanical oscillations imparted to the reciprocating needle selectively during at least a time period in which the needle is advanced into and through the material in each cycle of the needle reciprocation. The oscillation means may comprise an electromechanical transducer connectable in an oscillation transmitting relationship with said needle and a power supply for energizing the electromechanical transducer to impart said mechanical vibrations to said reciprocating needle. The machine may further comprise sensing means responsive to a load experienced by the needle from the material during each cycle of the needle reciprocation and control means responsive to an increase in the load for controlling the power supply to produce or intensify the mechanical oscillations imparted to the needle selectively during at least a time period in which the needle is advanced into and through the material in each cycle of the needle reciprocation.
- These and other features of the present invention as well as advantages thereof will become more readily apparent from a reading of the following description of certain embodiments thereof when made with reference to the accompanying drawing in which:
- FIG. 1 is an elevational view partly in section diagrammatically illustrating essential portions of a sewing machine incorporating a mechanical vibrator according to the present invention;
- FIG. 2 is a circuit diagram in a block form illustrating a preferred mode of a sewing method embodying the present invention;
- FIGS. 3(A) and 3(B) are graphical representations illustrating (a) changes in the sewing load which are experienced in sewing machines and (b) a controlled amplitude of mechanical oscillations according to a preferred form of the method according to the present invention;
- FIG. 4 is a cross-sectional view diagrammatically illustrating a portion of the structure shown in FIG. 1 and a portion of the machine not shown in FIG. 1:
- FIGS. 5 and 6 are side-elevational views diagrammatically illustrating cutting and welding/marking tools, respectively, which may be additionally mounted on the machine according to the present invention.
- Referring now to FIG. 1, a sewing machine according to the present invention may have a conventional basic structure and makes use of a needle 1 which is formed at a free end portion thereof with an aperture 1a having a thread (not shown) passed therethrough. The needle 1 is securely held by means of a
chuck 2 to an end (lower) portion of arod 3. The needle 1 is here supported coaxially with therod 3 and may extend vertically, perpendicularly to amaterial 4, e.g. cloth, leather or paper, to be stitched. Therod 3 is supported by a pair ofbearing assemblies 5 so as to be vertically movable up and down or capable of vertical reciprocation, and is held thereby against lateral movement and rotation. Therod 3 is vertically or axially reciprocated by amotor 6 via acrank 7 including acrankshaft 7a to which the output shaft of themotor 6 is drivingly coupled via a gear transmission (not shown) and acrank pin 7b secured to therod 3. The needle 1 is thus axially reciprocated into and through thematerial 4 moving manually or otherwise relative to the axis of the needle 1 to stitch thematerial 4. - Shown secured to the upper end of the
rod 3 is anelectromechanical transducer 8 which is energized by apower supply unit 9 to impart high-frequency mechanical oscillations to the reciprocating needle 1 in its axial or longitudinal direction. Thetransducer 8 and thepower supply unit 9 themselves are conventional in design and are commercially available. Thepower supply unit 9 is here mounted on acasing 10 secured to a frame 11 of the machine which has also thebearing assemblies 5 secured thereto. Thetransducer 8 is secured to therod 3 by means of abolt 12. Therod 3 is configured to serve as a horn for propagating and amplifying sonic or ultrasonic oscillatory signals produced in thetransducer 8 to the needle 1. Themotor 6 is accommodated on a suitable support within thecasing 10. - It has been found that when high-frequency mechanical oscillations are imparted axially to the reciprocating needle 1, the needle 1 can penetrate into and through the
material 4 with greater ease and smoothness in each cycle or reciprocation or each advancing stroke. Thus, stitching of any thick and/or hardsewable material 4 is facilitated. - The reciprocating needle 1, according to the present invention, is axially oscillated with an amplitude of the oscillations, for example, of 20 µm. This results in an oscillatory advancement of the needle 1 in each cycle of reciprocation in which an oscillation occurs each time the needle advances by a distance of 20 to 30 µm. During the advance stroke in each cycle of reciprocation, a plurality of oscillations should be experienced by the needle 1.
- In this manner, the penetration of the needle 1 into and through the
material 4 is greatly facilitated because of a significant reduction in the resistive friction of thematerial 4 against the penetrating needle 1. The rate of stitching can thus be increased and the possibility of accidental breakage of the needle 1 is also reduced. - In accordance with a further feature of the present invention, the mechanical oscillations imparted to the reciprocating needle 1 are imparted selectively during the advance stroke of each cycle of needle reciprocation. Alternatively, the mechanical oscillations may be damped selectively during the retraction stroke of each cycle of needle reciprocation.
- In FIG. 2 there is shown a circuit arrangement which enables such a modified mode of imparting mechanical oscillations to the reciprocating needle 1 to be executed. A
sensor 12 is associated with themotor 6 to measure changes in the load of thecrank 7 connected to the output of themotor 6. FIG. 3 shows in graph (A) how the load changes over the advance strokes (Ta) and retraction strokes (Tr) in the reciprocation of the needle through thematerial 4. Thesensor 12 responsive to the changes in the load provides switching or control signals which act on thepower supply 9 to actuate or increase the vibrational amplitude of thetransducer 8 selectively during the advance stroke of each cycle of needle reciprocation. FIG. 3(B) shows a resulting controlled mode of mechanical oscillations in which the reciprocating needle 1 is mechanically oscillated selectively during the advance stroke. Such a controlled mode is advantageous in that it achieves results substantially same as where the reciprocating needle 1 is oscillated over the entire cycles of reciprocation and at the same time significantly reduces noises produced by the needle oscillations. In FIG. 3 it is shown that the amplitude of mechanical vibrations is maximized when the needle 1 'experiences the highest magnitude of load. - Alternative manners of sensing the changes in the load include provision of a strain gauge on an element in the
crank 7 such as on thecrankshaft 7a to measure strains thereof. - According to still a further feature of the present invention, a sewing machine as described may have one or more additional functions of cutting, welding and marking
sewable materials 4. To this end, referring back to FIG. 1 and also to FIG. 4, thecasing 10 is securely carried by acollar 13 which is rotatably fitted onto acolumn 14. As shown in FIG. 4, thecollar 14 is designed to carryfurther frames arms collar 13. Theframes marking tools - The
cutting tool 19 shown in FIG. 5 comprises acutter 21 having acutting edge 21a and secured by means of a bolt to holder 22 in the form of a horn at one end thereof which is of smaller cross-section. - The other (upper) end of the
horn holder 22 has anelectrochemical transducer 23 secured thereto by means of a bolt. Thecutting tool 19 is supported in theframe 15 so as to be movable up and down and vertically positionable to locate theedge 21a in cutting relationship with the sewable orsewed material 4. Thetransducer 23 is energized by a power supply 24 (FIG. 4) to impart high-frequency mechanical oscillations to theedge 21a via theamplifier horn holder 22 to cut thematerial 4 which is moved along a desired cutting path. - The
welding tool 20 in FIG. 6 may be used to weld pieces of thermoplastic resinous, sewable or sewed material(s) at its free end (lower) portion and is secured by means of a bolt to ahorn holder 26 at one end thereof which has a smaller cross-section. The other (upper) end of thehorn holder 26 here again has anelectromechanical transducer 27 secured thereto by means of a bolt. Thewelding tool 20 is supported in theframe 16 so as to be movable up and down and vertically positionable to locate theshoe 25a in a welding relationship with two or more overlapped pieces of the sewed or sewable material(s) 4. Thetransducer 27 is energized by a power supply 28 (FIG. 4) to impart high-frequency mechanical oscillations to theshoe 25a via theamplifier horn 26 to weld the overlapped pieces together which may be moved along a desired welding path. A desired mark may be marked as well in this manner.
Claims (12)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8282307007T DE3275108D1 (en) | 1982-12-30 | 1982-12-30 | Sewing method and machine |
DE1982307007 DE112949T1 (en) | 1982-12-30 | 1982-12-30 | SEWING MACHINE AND METHOD. |
EP19820307007 EP0112949B1 (en) | 1982-12-30 | 1982-12-30 | Sewing method and machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19820307007 EP0112949B1 (en) | 1982-12-30 | 1982-12-30 | Sewing method and machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0112949A1 true EP0112949A1 (en) | 1984-07-11 |
EP0112949B1 EP0112949B1 (en) | 1987-01-14 |
Family
ID=8189883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19820307007 Expired EP0112949B1 (en) | 1982-12-30 | 1982-12-30 | Sewing method and machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0112949B1 (en) |
DE (2) | DE112949T1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2249560A (en) * | 1990-11-10 | 1992-05-13 | Brother Ind Ltd | Driving device for sewing machine |
GB2267717A (en) * | 1992-06-09 | 1993-12-15 | Brother Ind Ltd | Rotation control device for sewing machine motor |
US5304901A (en) * | 1990-11-28 | 1994-04-19 | Brother Kogyo Kabushiki Kaisha | Rotation control device for sewing motor |
EP1674603A1 (en) * | 2004-12-27 | 2006-06-28 | Ferdinand Schmetz Gmbh | Needle holder for a needle and sewing machine |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1083745A (en) * | 1953-07-16 | 1955-01-12 | Method and device for assembling and sewing fabrics of thermoplastic or other materials | |
GB987801A (en) * | 1956-10-22 | 1965-03-31 | Atomic Energy Authority Uk | Improvements in or relating to ultrasonic machining of hard materials |
US3296990A (en) * | 1964-09-01 | 1967-01-10 | Luther G Simjian | Method for reinforcing sewn material |
GB1094115A (en) * | 1965-04-28 | 1967-12-06 | Osoboe K Buro Proektorivaniyu | Method of and apparatus for ultrasonic boring of hard materials |
GB1115170A (en) * | 1966-10-14 | 1968-05-29 | Luther George Simjian | Method for reinforcing sewn material |
US3724566A (en) * | 1971-09-17 | 1973-04-03 | F Staros | Device for ultrasonic broaching of a group of holes |
DE2544165A1 (en) * | 1975-10-03 | 1977-04-14 | Pfaff Ind Masch | EQUIPMENT ON SEWING MACHINES FOR PRE-HOLE THE SEWING MATERIAL |
CH615965A5 (en) * | 1977-07-07 | 1980-02-29 | Gegauf Fritz Ag | Ultrasonic sewing machine |
GB2059464A (en) * | 1979-09-28 | 1981-04-23 | Vortec Corp | Apparatus for cooling the needle of a sewing machine |
-
1982
- 1982-12-30 DE DE1982307007 patent/DE112949T1/en active Pending
- 1982-12-30 DE DE8282307007T patent/DE3275108D1/en not_active Expired
- 1982-12-30 EP EP19820307007 patent/EP0112949B1/en not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1083745A (en) * | 1953-07-16 | 1955-01-12 | Method and device for assembling and sewing fabrics of thermoplastic or other materials | |
GB987801A (en) * | 1956-10-22 | 1965-03-31 | Atomic Energy Authority Uk | Improvements in or relating to ultrasonic machining of hard materials |
US3296990A (en) * | 1964-09-01 | 1967-01-10 | Luther G Simjian | Method for reinforcing sewn material |
GB1094115A (en) * | 1965-04-28 | 1967-12-06 | Osoboe K Buro Proektorivaniyu | Method of and apparatus for ultrasonic boring of hard materials |
GB1115170A (en) * | 1966-10-14 | 1968-05-29 | Luther George Simjian | Method for reinforcing sewn material |
US3724566A (en) * | 1971-09-17 | 1973-04-03 | F Staros | Device for ultrasonic broaching of a group of holes |
DE2544165A1 (en) * | 1975-10-03 | 1977-04-14 | Pfaff Ind Masch | EQUIPMENT ON SEWING MACHINES FOR PRE-HOLE THE SEWING MATERIAL |
CH615965A5 (en) * | 1977-07-07 | 1980-02-29 | Gegauf Fritz Ag | Ultrasonic sewing machine |
GB2059464A (en) * | 1979-09-28 | 1981-04-23 | Vortec Corp | Apparatus for cooling the needle of a sewing machine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2249560A (en) * | 1990-11-10 | 1992-05-13 | Brother Ind Ltd | Driving device for sewing machine |
US5271346A (en) * | 1990-11-10 | 1993-12-21 | Brother Kogyo Kabushiki Kaisha | Driving device for a sewing machine |
GB2249560B (en) * | 1990-11-10 | 1994-04-27 | Brother Ind Ltd | Driving device for sewing machine |
US5304901A (en) * | 1990-11-28 | 1994-04-19 | Brother Kogyo Kabushiki Kaisha | Rotation control device for sewing motor |
GB2267717A (en) * | 1992-06-09 | 1993-12-15 | Brother Ind Ltd | Rotation control device for sewing machine motor |
EP1674603A1 (en) * | 2004-12-27 | 2006-06-28 | Ferdinand Schmetz Gmbh | Needle holder for a needle and sewing machine |
Also Published As
Publication number | Publication date |
---|---|
DE112949T1 (en) | 1985-02-14 |
EP0112949B1 (en) | 1987-01-14 |
DE3275108D1 (en) | 1987-02-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4541349A (en) | Sewing method and machine | |
CN108998899B (en) | Automatic improve work feed mechanism of receiving line | |
GB1561797A (en) | Sewing machine with a pre-perforating device | |
EP0112949A1 (en) | Sewing method and machine | |
CN1093898C (en) | Sewing machine having multiple needles | |
CN104647107A (en) | Oscillatory drive | |
US2377777A (en) | Ruffling and stitching machine | |
US4787326A (en) | Method for operating an automatic sewing device with a sewing head including a rotary housing | |
USRE24005E (en) | Knaus ctal | |
US4502400A (en) | Sewing machine with a trimming device | |
US4436045A (en) | Differential feed mechanism for sewing machines | |
US4671149A (en) | Method of perforating a texture to be sewn | |
JP2006158650A (en) | Sewing machine | |
US3999453A (en) | Ultrasonic cutting apparatus | |
US2540355A (en) | Trimming attachment for sewing machines | |
JPH07194869A (en) | Sewing machine with under feed mechanism | |
US11846056B2 (en) | Handle vibration dampener | |
US2292257A (en) | Needle-bar mechanism for sewing machines | |
KR100801343B1 (en) | Sewing machine | |
JPH01301096A (en) | Cutting device for sheetlike material and cutter therefor | |
JPH0751480A (en) | Mechanism for needle bar of sewing machine | |
US2036828A (en) | Skip-stitch sewing machine | |
US2519452A (en) | Zig-zag sewing machine | |
JP2001038083A (en) | Buttonhole formation device for buttonhole sewing machine | |
US5090342A (en) | Sewing machine with a sewing head including a rotary housing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
ITCL | It: translation for ep claims filed |
Representative=s name: FIAMMENGHI FIAMMENGHI RACHELI |
|
17P | Request for examination filed |
Effective date: 19840613 |
|
EL | Fr: translation of claims filed | ||
DET | De: translation of patent claims | ||
ITF | It: translation for a ep patent filed |
Owner name: FIAMMENGHI - DOMENIGHETTI |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
REF | Corresponds to: |
Ref document number: 3275108 Country of ref document: DE Date of ref document: 19870219 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19890221 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19891230 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19900831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19900901 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |