GB721975A - Improvements in or relating to sewing machines - Google Patents
Improvements in or relating to sewing machinesInfo
- Publication number
- GB721975A GB721975A GB20103/52A GB2010352A GB721975A GB 721975 A GB721975 A GB 721975A GB 20103/52 A GB20103/52 A GB 20103/52A GB 2010352 A GB2010352 A GB 2010352A GB 721975 A GB721975 A GB 721975A
- Authority
- GB
- United Kingdom
- Prior art keywords
- taker
- plunger
- loop
- carrier
- spool
- 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
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
- D05B59/04—Devices for changing the bobbin
Abstract
721,975. Sewing-machines. PFAFF AKT.- GES., G. M. Aug. 11, 1952 [Aug. 9, 1951]. No. 20103/52. Class 112. Automatically exchanging loop-taker thread spools. A carrier having movement along and about an axis is arranged to grip the spool-case in the loop-taker and a replacement spool-case, to remove the former and discard it, and simultaneously to place the latter in the loop-taker. In the form shown in underneath view, the carrier comprises a bar 10 mounted to slide but not rotate on a spindle 4 parallel to the shaft of the loop-taker 30, each end of the bar being provided with a pivoted gripping device which includes a fork 25 to engage the bobbin latch hinge pin 28, a claw 23 to engage the end 29 of the latch, and a retaining spring 24. A plunger 21 is rigid with a member 15 slotted at 31 to slide transversely of the spindle 4 and formed with a cam surface 14 to move the carrier 10 along the spindle against a spring 13; a ratchet rack 20 pivoted to the plunger 21 is spring- pressed against a ratchet wheel 7 on the spindle, a detent being provided so that successive outward movements of the plunger cause successive half-revolutions of the spindle 4 with the carrier 10, the inward movements of the plunger producing axial movement of the bar 10 without rotation, which is prevented by engagement of one of a pair of holes 16 in the bar with a fixed pin 18. Two in-and-out operations of the plunger 21 are necessary to exchange the spools, the .first causing the carrier to engage and withdraw the spool-case in the loop-taker and a replacement spool-case in any suitable storage device, finally causing rotation of the carrier to place the new spool-case in line with the loop-taker, and the second to place the spool-case in the loop-taker and release it; the original spool-case is dropped into a collecting device during the first rotation. In a modification, suitable cam means may perform the necessary operations for a single actuation of the plunger. The plunger may be actuated by hand, foot, or knee, and hydraulic or electric power may be used. Any suitable means, such as an abutment to render the spring 24 inaffective, may be used to release the spoolcases from the carrier.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE309894X | 1951-08-09 | ||
| DE745185X | 1952-09-24 | ||
| DEP8418A DE947664C (en) | 1951-08-09 | 1952-09-25 | Device for mechanical bobbin change on sewing machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB721975A true GB721975A (en) | 1955-01-19 |
Family
ID=27189069
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20103/52A Expired GB721975A (en) | 1951-08-09 | 1952-08-11 | Improvements in or relating to sewing machines |
| GB26278/53A Expired GB745185A (en) | 1951-08-09 | 1953-09-24 | Improvements in or relating to sewing machines |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26278/53A Expired GB745185A (en) | 1951-08-09 | 1953-09-24 | Improvements in or relating to sewing machines |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US2690725A (en) |
| CH (2) | CH309894A (en) |
| DE (1) | DE947664C (en) |
| FR (2) | FR1064762A (en) |
| GB (2) | GB721975A (en) |
| NL (1) | NL93071C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3145673A (en) * | 1962-10-02 | 1964-08-25 | Singer Co | Control device for lock stitch sewing machine |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2808795A (en) * | 1955-12-12 | 1957-10-08 | New York Trust Company | Automatic thread cutter for sewing machines |
| NL265223A (en) * | 1960-05-28 | |||
| BE644796A (en) * | 1963-06-26 | |||
| US3376838A (en) * | 1966-02-01 | 1968-04-09 | Ivanhoe Res Corp | Bobbin changer for sewing machines |
| US3747547A (en) * | 1971-02-23 | 1973-07-24 | Bobbin Monitor Corp | Bobbin changing mechanism method and product |
| US3981256A (en) * | 1975-05-09 | 1976-09-21 | J. P. Stevens & Co., Inc. | Magnetic automatic bobbin changer for sewing machines |
| US4002130A (en) * | 1975-09-22 | 1977-01-11 | Automatech Industries, Inc. | Automatic bobbin rewinding for sewing machines |
| US4223618A (en) * | 1978-02-09 | 1980-09-23 | Gateway Industries, Inc. | Automatic bobbin changer and apparatus for a sewing machine |
| US4186677A (en) * | 1978-05-08 | 1980-02-05 | Sacchetti Alfred D | Automatic color bobbin changer |
| ATE30929T1 (en) * | 1983-02-23 | 1987-12-15 | Nikolaos Kosmas | EXCHANGE DEVICE FOR LOOPER COIL FOR SEWING MACHINE AND EMPTY DETECTOR FOR THEM. |
| WO1990015893A1 (en) * | 1989-06-22 | 1990-12-27 | Carl Schmale Gmbh & Co. Kg | Automatic bobbin-winding and -changing machine for lockstitch machines |
| US5315944A (en) * | 1989-06-22 | 1994-05-31 | Carl Schmale Gmbh | Machine for automatically changing lower-thread bobbins |
| ES2044600T3 (en) * | 1989-06-22 | 1994-01-01 | Schmale Carl Gmbh & Co Kg | MACHINE FOR THE AUROMATIC CHANGE OF LOWER THREAD COVERS, MAINLY FOR PESPUNTE SEWING MACHINES. |
| IT1274445B (en) * | 1995-05-08 | 1997-07-17 | Osvaldo Vezzoli | CONTROL FOR THE AUTOMATIC CHANGE OF THE LOWER THREAD REEL, FOR SEWING MACHINES |
| DE19913043C2 (en) * | 1999-03-23 | 2001-09-27 | Philipp Moll | Device on sewing or embroidery machines for changing the bobbin for the hook thread |
| CN1795299A (en) * | 2003-11-17 | 2006-06-28 | 东海工业缝纫机株式会社 | Bobbin-changing apparatus for sewing machine |
| JP5094060B2 (en) * | 2006-07-11 | 2012-12-12 | 東海工業ミシン株式会社 | Sewing machine bobbin changer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US906987A (en) * | 1904-12-01 | 1908-12-15 | Edmund Albert Angus | Shuttle-replenishing mechanism. |
| US1087703A (en) * | 1913-07-31 | 1914-02-17 | Frank H Weitz | Bobbin-holder ejector. |
| AT103031B (en) * | 1922-12-11 | 1926-04-10 | Henry George Bedell | Sewing machine. |
| US2298871A (en) * | 1940-11-08 | 1942-10-13 | Willcox & Gibbs Sewing Machine | Sewing machine |
| US2507470A (en) * | 1946-10-17 | 1950-05-09 | Willcox & Gibbs Sewing Machine | Bobbin case removing and replacing mechanisms for sewing machines |
-
0
- NL NL93071D patent/NL93071C/xx active
- US US2733676D patent/US2733676A/en not_active Expired - Lifetime
-
1952
- 1952-08-01 FR FR1064762D patent/FR1064762A/en not_active Expired
- 1952-08-05 CH CH309894D patent/CH309894A/en unknown
- 1952-08-11 GB GB20103/52A patent/GB721975A/en not_active Expired
- 1952-09-25 DE DEP8418A patent/DE947664C/en not_active Expired
-
1953
- 1953-09-16 CH CH338085D patent/CH338085A/en unknown
- 1953-09-22 FR FR65297D patent/FR65297E/en not_active Expired
- 1953-09-23 US US381776A patent/US2690725A/en not_active Expired - Lifetime
- 1953-09-24 GB GB26278/53A patent/GB745185A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3145673A (en) * | 1962-10-02 | 1964-08-25 | Singer Co | Control device for lock stitch sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1064762A (en) | 1954-05-18 |
| DE947664C (en) | 1956-08-23 |
| NL93071C (en) | |
| FR65297E (en) | 1956-02-08 |
| GB745185A (en) | 1956-02-22 |
| US2733676A (en) | 1956-02-07 |
| CH338085A (en) | 1959-04-30 |
| US2690725A (en) | 1954-10-05 |
| CH309894A (en) | 1955-09-30 |
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