CN110735241A - Multi-needle chain type sewing machine head with follow-up presser foot - Google Patents
Multi-needle chain type sewing machine head with follow-up presser foot Download PDFInfo
- Publication number
- CN110735241A CN110735241A CN201810800884.7A CN201810800884A CN110735241A CN 110735241 A CN110735241 A CN 110735241A CN 201810800884 A CN201810800884 A CN 201810800884A CN 110735241 A CN110735241 A CN 110735241A
- Authority
- CN
- China
- Prior art keywords
- presser foot
- needle
- shaft
- rod
- machine head
- 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.)
- Pending
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a multi-needle chain type machine head with a follow-up presser foot, which mainly comprises a machine head assembly, a rotating shuttle assembly and a follow-up presser foot assembly, wherein the follow-up presser foot assembly is connected with a machine head main shaft through an eccentric connecting rod and drives the presser foot assembly to act through the machine head main shaft, a hand wheel is additionally arranged to manually adjust the positions of a needle rod and the presser foot, a servo motor, a machine head rear cover, a protective cover and a machine head shell are respectively fixed on a machine head frame through screws, a thread take-up rod check ring is connected with a looper shaft and fixed through the screws, a swinging eccentric cam is connected with a driving shaft and fastened through the screws, the looper is arranged on a looper fixing seat and is propped by a top thread.
Description
Technical Field
The invention belongs to the technical field of home textile equipment of an automatic production line, and is mainly used for locking a quadrilateral machine.
Background
The invention relates to a chain type machine head with driven pressure feet and multiple needles, which is used for processing products such as quilt cores and the like, wherein the machine head plays a very important role in the processing process of the products, such as quilt cores and the like, and the quality of the products is directly influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multi-needle chain type edge sewing machine head with a follow-up presser foot, wherein the presser foot falls along with a needle rod when the needle rod falls for sewing, so that the sewing requirement can be ensured, the phenomenon of cloth removal is avoided, and the quality of products is directly improved.
The purpose of the invention is realized by the following technical scheme:
A multi-needle chain type edge sewing machine head with follow-up presser foot is composed of machine head assembly, follow-up presser foot assembly, and rotary shuttle assembly.
Wherein, the aircraft nose subassembly includes: servo motor, hand wheel, aircraft nose back cover, protection casing, aircraft nose frame, spiral shuttle case, aircraft nose casing, faller, pine line knob, sensor support, sensor, cross the line board, lower wire rod, take-up lever support, synchronous pulley 1, hold-in range 1, synchronous pulley 2, overspeed device tensioner 1, overspeed device tensioner 2, BLF202 bearing, synchronous pulley 3, synchronous pulley 4, synchronous pulley 2, aircraft nose main shaft, aircraft nose tablet.
Wherein, follow-up presser foot subassembly includes: eccentric connecting rod, presser foot transmission shaft, transmission shaft holder, presser foot drive base, axle head adapter sleeve, presser foot pendulum rod, two eye connecting rod, presser foot pole guide pin bushing, presser foot pole, double needle presser foot, 6204NR bearing, crank disc, connecting rod, needle rod clamp splice, take-up connecting rod, needle file, eedle.
Wherein, the rotating shuttle subassembly includes: the device comprises a curved needle, a swing shaft, a driving shaft, a curved needle shaft, a driving shaft eccentric convex sleeve, a driving shaft copper support, a swing eccentric cam, a take-up lever check ring, a thread shifting swing seat, a thread shifting connecting seat, a jumper wire swing seat, a pull rod socket, a curved needle swing seat assembly, a pull rod baffle, a curved needle seat bearing, a driving shaft sleeve, a thread shifting fixed shaft, a curved needle fixed seat and a thread shifting rod.
The servo motor, the machine head rear cover, the protective cover and the machine head shell are respectively fixed on the machine head frame by screws; the hand wheel is connected with the machine head main shaft and is supported and arranged outside the machine head rear cover by a jackscrew; the needle plate is fixed above the rotating shuttle box by screws; the thread releasing knob and the thread passing plate are respectively fixed on the machine head shell by screws; the sensor is arranged on a sensor bracket, and the sensor bracket is fixed on the machine head frame by a screw; the lower thread guide rod and the thread take-up rod bracket are respectively fixed on the rotating shuttle box by screws; the synchronous belt wheel 1 is connected with a servo motor and is propped by a jackscrew; the synchronous belt pulley 2 is connected with a machine head main shaft and is propped by a jackscrew, and the synchronous belt 1 is connected with the synchronous belt pulley 1 and the synchronous belt pulley 2; the tensioning device 1, the tensioning device 2 and the BLF202 bearings are respectively fixed on the machine head frame by screws; the synchronous belt pulley 3 is connected with a machine head main shaft and is propped by a jackscrew; the synchronous pulley 4 is connected with the driving shaft and supported by a jackscrew, and the synchronous pulley 3 is connected with the synchronous pulley 4 (23) by the synchronous belt 2.
The 6204NR bearing is connected with the handpiece frame in an interference fit mode; the main shaft of the machine head passes through a 6204NR bearing to be connected with the machine head frame; the machine head induction plate is connected with the machine head main shaft, is supported by a jackscrew and is connected with the machine head main shaft and the transmission shaft clamping seat by an eccentric connecting rod; the presser foot transmission shaft is connected with the transmission shaft clamping seat and is fastened by screws; the presser foot driving base and the shaft end fastening sleeve are respectively connected with the presser foot transmission shaft, and the presser foot swing rod is connected with the presser foot transmission shaft and the two-eye connecting rod and respectively fastened by screws; the presser bar guide sleeve is connected with the presser bar; the double-needle presser foot is arranged at the bottom of the presser foot rod and is fastened by a screw, the crank disc is used for connecting the machine head main shaft and the connecting rod, and the needle rod clamping block is used for connecting the needle rod and the connecting rod; the jumper wire connecting rod is fixed on the needle rod by a screw, the needle seat is arranged on the needle rod and fastened by the screw, and the needle is arranged on the needle seat and fastened by the screw; the driving shaft is connected with the rotating shuttle box through a driving shaft sleeve, and a driving shaft copper support is connected with the driving shaft and the swinging shaft; the driving shaft eccentric cam sleeve is connected with the driving shaft and the curved needle shaft.
The thread take-up lever retainer ring is connected with the looper shaft and fixed by a screw; the swing eccentric cam is connected with the driving shaft and is fastened by a screw; the wire shifting swing seat is connected with the swing shaft and the wire shifting connecting seat; a thread take-up swing seat is used for connecting the looper shaft and the driving shaft eccentric cam sleeve; a pull rod socket is used for connecting the looper shaft and the looper swinging seat component, and a looper shaft sleeve is connected with the looper shaft and is propped by a jackscrew; the wire shifting connecting seat is connected with the wire shifting swinging seat and the wire shifting fixing shaft; the wire shifting rod is arranged on the wire shifting fixing shaft and is jacked by a jackscrew; the curved needle fixing seat is connected with the curved needle swinging seat component and is fastened by a screw; the curved needle is arranged on the curved needle fixing seat and is supported by a jackscrew.
The invention has the advantages and beneficial effects that:
through the design of the invention, the follow-up presser foot works in cooperation with the machine head with the multi-needle chain structure, the presser foot also falls along with the needle bar when the needle bar falls for sewing, and the presser foot moves along with the action of the needle bar, so that the sewing requirement can be ensured, the phenomenon of cloth removal is avoided, and the quality of products is directly improved.
Drawings
FIG. 1 is a schematic view of an overall apparatus;
FIG. 2 is a schematic view of the overall apparatus;
FIG. 3 is a schematic view of a head assembly;
FIG. 4 is a schematic view of a follower presser foot assembly;
FIG. 5 is a view showing an internal structure of a rotating shuttle;
fig. 6 is a schematic view of the overall apparatus.
1. Servo motor 2, hand wheel 3, head rear cover 4, protective cover 5, head frame 6, rotary shuttle box 7, head shell 8, needle plate 9, thread releasing knob 10, sensor support 11, sensor 12, thread passing 13, lower thread passing rod 14, thread picking rod support 15, synchronous pulley 116, synchronous belt 117, synchronous pulley 218, tensioning device 119, tensioning device 220, BLF202 bearing 21, synchronous pulley 322, synchronous pulley 423, synchronous belt 224, head spindle 25, head sensing plate 26, eccentric connecting rod 27, presser foot transmission shaft 28, transmission shaft clamping seat 29, presser foot driving seat 30, shaft end fastening sleeve 31, presser foot oscillating bar 32, secondary eye connecting rod 33, presser foot rod guide sleeve 34, presser foot rod 35, double needle presser foot 36.6204NR bearing 37, crank disc (37) 38, connecting rod 39, needle rod clamping block 40, thread picking connecting rod 41, needle rod 42, needle 44, needle bending 45, oscillating shaft 46, main needle bar oscillating shaft 33, presser foot oscillating shaft 35, double needle presser foot 36.6204NR bearing 37, crank disc (37), presser foot shaft 39), needle bar clamping The novel thread take-up device comprises a moving shaft 47, a looper shaft 48, a driving shaft eccentric convex sleeve 49, a driving shaft copper support 50, a swinging eccentric cam 51, a thread take-up lever retainer ring 52, a thread take-up swinging seat 53, a thread take-up connecting seat 54, a thread take-up swinging seat 55, a pull rod socket 56, a looper swinging seat assembly 57, a pull rod baffle plate 58, a looper seat bearing 59, a driving shaft sleeve 60, a thread take-up fixed shaft 61, a looper fixed seat 62, a thread take-up lever 63, a machine head assembly 64, a follow-up presser foot assembly 65.
Detailed Description
To further understanding of the contents, features and effects of the present invention, the following examples are given in detail with reference to the accompanying drawings.
A multi-needle chain type machine head with follow-up presser foot mainly comprises a machine head component, a rotating shuttle component and a follow-up presser foot component.
Wherein the head assembly (63) comprises: the automatic thread releasing device comprises a servo motor (1), a hand wheel (2), a head rear cover (3), a protective cover (4), a head frame (5), a rotary shuttle box (6), a head shell (7), a needle plate (8), a thread releasing knob (9), a sensor support (10), a sensor (11), a thread passing plate (12), a lower thread passing rod (13), a thread take-up rod support (14), a synchronous pulley 1 (15), a synchronous belt 1 (16), a synchronous pulley 2 (17), a tensioning device 1 (18), a tensioning device 2 (19), a BLF202 bearing (20), a synchronous pulley 3 (21), a synchronous pulley 4 (22), a synchronous belt 2 (23), a head main shaft (24) and a head induction plate (25)
Wherein the follower presser foot assembly (64) comprises: eccentric connecting rod (26), presser foot transmission shaft (27), transmission shaft holder (28), presser foot drive base (29), shaft end fastening sleeve (30), presser foot swing rod (31), two-eye connecting rod (32), presser foot rod guide sleeve (33), presser foot rod (34), double-needle presser foot (35), 6204NR bearing (36), crank disc (37), connecting rod (38), needle rod clamping block (39), thread taking-up connecting rod (40), needle rod (41), needle base (42), machine needle (43) eccentric connecting rod (26), presser foot transmission shaft (27), transmission shaft holder (28), presser foot drive base (29), shaft end fastening sleeve (30), presser foot swing rod (31), two-eye connecting rod (32), presser foot rod guide sleeve (33), presser foot rod (34), double-needle presser foot (35), 6204NR bearing (36), crank disc (37), connecting rod (38), needle rod clamping block (39), thread taking-up connecting rod (40), A needle rod (41), a needle seat (42) and a machine needle (43).
Wherein the rotating shuttle assembly (65) comprises: the novel needle drawing mechanism comprises a curved needle (44), a swinging shaft (45), a driving shaft (46), a curved needle shaft (47), a driving shaft eccentric convex sleeve (48), a driving shaft copper support (49), a swinging eccentric cam (50), a take-up lever retainer ring (51), a wire drawing swinging seat (52), a wire drawing connecting seat (53), a wire drawing swinging seat (54), a pull rod socket (55), a curved needle swinging seat assembly (56), a pull rod baffle plate (57), a curved needle seat bearing (58), a driving shaft sleeve (59), a wire drawing fixed shaft (60), a curved needle fixed seat (61) and a wire drawing rod (62).
The servo motor (1), the head rear cover (3), the protective cover (4) and the head shell (7) are respectively fixed on the head frame (5) by screws; the hand wheel (2) is connected with the machine head main shaft (24) and is supported and installed outside the machine head rear cover (3) by a jackscrew; the needle plate (8) is fixed above the rotating shuttle box (6) by screws; the thread loosening knob (9) and the thread passing plate (12) are respectively fixed on the machine head shell (7) through screws; the sensor (11) is arranged on the sensor bracket (10), and the sensor bracket (10) is fixed on the machine head frame (5) by screws; the lower thread guide rod (13) and the thread take-up rod bracket (14) are respectively fixed on the rotating shuttle box (6) by screws; the synchronous belt wheel 1 (15) is connected with the servo motor (1) and is supported by a jackscrew; the synchronous pulley 2 (17) is connected with a main shaft (24) of the handpiece and is supported by a jackscrew, and the synchronous pulley 1 (15) and the synchronous pulley 2 (17) are connected by a synchronous belt 1 (16); the tensioning device 1 (18), the tensioning device 2 (19) and the BLF202 bearing (20) are respectively fixed on the machine head frame (5) by screws; the synchronous belt wheel 3 (21) is connected with a machine head main shaft (24) and is supported by a jackscrew; the synchronous pulley 4 (22) is connected with the driving shaft (46) and supported by a jackscrew, and the synchronous pulley 3 (21) and the synchronous pulley 4 (23) are connected by a synchronous belt 2 (23).
The 6204NR bearing (36) is connected with the handpiece frame (5) in an interference fit mode; the handpiece main shaft (24) is connected with the handpiece frame (5) through a 6204NR bearing (36); the nose induction plate (25) is connected with a nose main shaft (24) and is supported by a jackscrew, and the nose main shaft (24) and the transmission shaft clamping seat (28) are connected by an eccentric connecting rod (26); the presser foot transmission shaft (27) is connected with the transmission shaft clamping seat (28) and is fastened by screws; the presser foot driving base (29) and the shaft end fastening sleeve (30) are respectively connected with the presser foot transmission shaft (27), and the presser foot swing rod (31) is used for connecting the presser foot transmission shaft (27) and the two-eye connecting rod (32) and respectively fastened by screws; the presser bar guide sleeve (33) is connected with the presser bar (34); the double-needle presser foot (35) is arranged at the bottom of the presser foot rod (34) and is fastened by a screw, a crank disc (37) is used for connecting a machine head main shaft (24) and a connecting rod (38), and a needle rod clamping block (39) is used for connecting a needle rod (41) and the connecting rod (38); the jumper wire connecting rod (40) is fixed on the needle rod (41) by screws, the needle seat (42) is installed on the needle rod (41) and fastened by screws, and the machine needle (43) is installed on the needle seat (42) and fastened by screws; the driving shaft (46) is connected with the rotating shuttle box (6) through a driving shaft sleeve (59), and a driving shaft copper support (49) is connected with the driving shaft (46) and the swinging shaft (45); the driving shaft eccentric cam sleeve (48) is connected with the driving shaft (46) and the needle bending shaft (47).
The take-up lever retainer ring (51) is connected with the looper shaft (47) and fixed by screws; the swing eccentric cam (50) is connected with the driving shaft (46) and is fastened by a screw; a wire shifting swing seat (52) is used for connecting the swing shaft (45) and the wire shifting connecting seat (53); a thread take-up swing seat (54) is used for connecting the looper shaft (47) and the driving shaft eccentric cam sleeve (48); a pull rod socket (55) is used for connecting the curved needle shaft (47) and the curved needle swing seat assembly (56), and a curved needle shaft sleeve (58) is connected with the curved needle shaft (47) and is propped by a jackscrew; a wire shifting connecting seat (53) is used for connecting a wire shifting swinging seat (52) and a wire shifting fixing shaft (60); the wire shifting rod (62) is arranged on the wire shifting fixing shaft (60) and is supported by a jackscrew; the curved needle fixing seat (61) is connected with the curved needle swinging seat component (56) and is fastened by a screw; the curved needle (44) is arranged on the curved needle fixing seat (61) and is supported by a jackscrew.
When the automatic winding machine works, the servo motor (1) drives the synchronous belt pulley 1 (15) to rotate, the synchronous belt pulley 1 (15) drives the synchronous belt 1 (16) to rotate, the synchronous belt 1 (16) drives the synchronous belt pulley 2 (17) to rotate, the synchronous belt pulley 2 (17) drives the handpiece main shaft (24) to rotate, the handpiece main shaft (24) drives the synchronous belt pulley 3 (21) to rotate, the synchronous belt pulley 3 (21) drives the synchronous belt 2 (23) to rotate, the synchronous belt 2 (23) drives the synchronous belt pulley 4 (22) to rotate, the synchronous belt pulley 4 (22) drives the driving shaft (46) to rotate, the driving shaft (46) drives the looper shaft (47) to move through the driving eccentric cam sleeve (48), the looper shaft (47) drives the looper (44) to move through the looper swinging seat (56) and the looper fixing seat (61), and the looper shaft (47) drives the thread take-up swinging seat assembly; the driving shaft (46) drives the wire shifting fixing shaft (60) to act through the wire shifting swinging seat (52) and the wire shifting connecting seat (53), and the wire shifting fixing shaft (60) drives the wire shifting rod (62) to act; the machine head main shaft (24) drives the presser foot transmission shaft (27) to act through the eccentric connecting rod (26), the presser foot transmission shaft (27) drives the presser foot rod (34) to act through the presser foot swing rod (31), the presser foot rod (34) drives the double-needle presser foot (35) to act, and the machine head main shaft (24) drives the needle rod (41) to complete the action through the connecting rod (38).
The follow-up presser foot component (64) is connected with the machine head main shaft (24) through the eccentric connecting rod (26), the presser foot component (64) is driven to act through the machine head main shaft (24), the follow-up presser foot component (64) works in cooperation with the machine head component (63), the presser foot also falls along with the needle rod when the needle rod falls for sewing, and the presser foot acts along with the needle rod, so that the sewing requirement can be ensured, the phenomenon of cloth removal can not exist, and the quality of products is directly improved.
Claims (4)
- The multi-needle chain type handpiece with the follow-up pressure foot mainly comprises a handpiece component, a rotating shuttle component and a follow-up pressure foot component, wherein the handpiece component comprises a servo motor, a hand wheel, a handpiece rear cover, a protective cover, a handpiece frame, a rotating shuttle box, a handpiece shell, a needle plate, a thread releasing knob, a sensor support, a sensor, a thread passing plate, a lower thread passing rod, a thread taking rod support, a synchronous belt wheel 1, a synchronous belt wheel 2, a tensioning device 1, a tensioning device 2, a BLF202 bearing, a synchronous belt wheel 3, a synchronous belt wheel 4, a synchronous belt 2, a handpiece main shaft and a handpiece induction plate.Follow-up presser foot subassembly includes: the device comprises an eccentric connecting rod, a presser foot transmission shaft, a transmission shaft clamping seat, a presser foot driving base, a shaft end fastening sleeve, a presser foot swing rod, a two-eye connecting rod, a presser foot rod guide sleeve, a presser foot rod, a double-needle presser foot, a 6204NR bearing, a crank disc, a connecting rod, a needle rod clamping block, a take-up connecting rod, a needle seat and a machine needle; the method is characterized in that: the presser foot transmission shaft is connected with the transmission shaft clamping seat and is fastened by screws; the presser foot driving base and the shaft end fastening sleeve are respectively connected with the presser foot transmission shaft, and the presser foot swing rod is connected with the presser foot transmission shaft and the two-eye connecting rod and respectively fastened by screws.The rotating shuttle assembly comprises: the device comprises a curved needle, a swing shaft, a driving shaft, a curved needle shaft, a driving shaft eccentric convex sleeve, a driving shaft copper support, a swing eccentric cam, a take-up lever check ring, a dial swing seat, a dial connecting seat, a jumper swing seat, a pull rod socket, a curved needle swing seat assembly, a pull rod baffle, a curved needle seat bearing, a driving shaft sleeve, a dial fixing shaft, a curved needle fixing seat and a dial rod; the method is characterized in that: the thread take-up lever retainer ring is connected with the looper shaft and fixed by a screw; the swing eccentric cam is connected with the driving shaft and is fastened by a screw; the curved needle is arranged on the curved needle fixing seat and is supported by a jackscrew.
- 2. The multineedle chain type hemming machine head with follow-up presser foot according to claim 1 wherein the hand wheel is connected to a machine head spindle to manually adjust the position of the needle bar and the presser foot to facilitate manual adjustment of the position of the needle and the presser foot.
- 3. The multineedle chain type hemming machine head with follow-up presser foot according to claim 1 wherein the follow-up presser foot assembly is an independent structure and is connected with the main shaft of the machine head through an eccentric link, the position relationship between the follow-up presser foot and the machine needle can be independently adjusted, and the machine is convenient to debug.
- 4. The multiple-needle chain type sewing machine head with follow-up pressure foot as claimed in claim 1, wherein the follow-up pressure foot component, when the needle bar falls down for sewing, the pressure foot also falls with the needle bar , the pressure foot moves with the needle bar, thus the sewing requirement can be ensured, the cloth contact phenomenon can not exist, and the quality of the product is directly improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810800884.7A CN110735241A (en) | 2018-07-20 | 2018-07-20 | Multi-needle chain type sewing machine head with follow-up presser foot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810800884.7A CN110735241A (en) | 2018-07-20 | 2018-07-20 | Multi-needle chain type sewing machine head with follow-up presser foot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110735241A true CN110735241A (en) | 2020-01-31 |
Family
ID=69235476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810800884.7A Pending CN110735241A (en) | 2018-07-20 | 2018-07-20 | Multi-needle chain type sewing machine head with follow-up presser foot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110735241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826825A (en) * | 2020-07-24 | 2020-10-27 | 宜城成雄织造有限公司 | Check yarn is computer flush joint machine for diaper |
-
2018
- 2018-07-20 CN CN201810800884.7A patent/CN110735241A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826825A (en) * | 2020-07-24 | 2020-10-27 | 宜城成雄织造有限公司 | Check yarn is computer flush joint machine for diaper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB493628A (en) | Improvements in or relating to sewing machines | |
| CN110735241A (en) | Multi-needle chain type sewing machine head with follow-up presser foot | |
| GB1095530A (en) | ||
| GB773451A (en) | Improvements in and relating to a sewing machine | |
| CN208604317U (en) | A kind of spininess chain type transverse joint head | |
| CN107237050B (en) | Quilting machine | |
| US2144802A (en) | Sewing machine feed mechanism | |
| GB466656A (en) | Improvements in or relating to sewing machines | |
| CN208869791U (en) | A kind of band is servo-actuated the spininess chain type side seam head of presser feet | |
| US2128033A (en) | Thread-controlling device for sewing machines | |
| GB571094A (en) | Improvement in blind-stitch sewing machine | |
| US1731221A (en) | Hat-sewing machine | |
| US1917756A (en) | Feed-off-arm sewing machine | |
| US2193754A (en) | Feeding mechanism for sewing machines | |
| US2645192A (en) | Automatic button-clamp lifting means | |
| US2239591A (en) | Looper-actuating and retracting mechanism for sewing machines | |
| CN209652586U (en) | A kind of shank presser foot device | |
| GB624834A (en) | Sewing machine for attaching buttons or other articles | |
| US2322207A (en) | Feeding mechanism for sewing machines | |
| US1885927A (en) | Lockstitch sewing machine | |
| GB160948A (en) | An improved sole sewing machine combining means for stitcher pump, and direct sewing | |
| US1960924A (en) | Thread-handling mechanism for sewing machines | |
| GB617036A (en) | Thread-controller for sewing machines | |
| GB703821A (en) | Improvements in or relating to sewing machines | |
| US2325995A (en) | Thread-controlling mechanism for sewing machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |