US3688714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for a sewing machine
Assignee: Brother Industries Ltd
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Filing: 1970-08-12
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Granted: 1972-09-05
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Expires: 1990-08-12
Abstract
Abstract A system comprises a sewing machine, a clutch-brake motor for driving said sewing machine at high speed, a foot treadle, and an electric circuit for controlling the machine operation. The machine is operated by the circuit in such a manner that nonraveling seam is applied at the end of lock stitch seam at high speed when the foot treadle is operated.
Inventors
- 👤 Tsutomu Makihara
- 👤 Satoshige Yoneji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:58
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/28; D05B65/00; D05B69/22
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
293 words
A control system for a sewing machine having a. a frame, b. a main shaft rotatably supported on the frame, c. a reciprocable needle supported on the frame and drivingly connected to said main shaft, d. work feeding means supported on said frame for advancing or reversing the travel of a work fabric according to the rotation of said main shaft, and e. means supported on said frame for reversing the feeding direction of said work feeding means, said control system comprising: 1. drive means drivingly connected to and rotating said main shaft; 2. clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft; 3. a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest position, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft; 4. auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle; 5. operating means connected to said auxiliary actuating means for operating the same: 6. a first control means connected to said feed reversing means for actuating the same for a predetermined period upon operation of said foot treadle in the downward direction; and 7. a second control means connected to said operating means and said feed reversing means for actuating both of said means for a predetermined period upon operation of said foot treadle in the upward direction after the desired amount of sewing is finished, whereby there can be effected desired non-ravel seaming automatically and quickly at the start and end of sewing only by the operation of said treadle.
Claim 2
Dependent Claim
293 words
A control system for a sewing machine having a. a frame, b. a main shaft rotatably supported on the frame, c. a reciprocable needle supported on the frame and drivingly connected to said main shaft, d. work feeding means supported on said frame for advancing or reversing the travel of a work fabric according to the rotation of said main shaft, and e. means supported on said frame for reversing the feeding direction of said work feeding means, said control system comprising: 1. drive means drivingly connected to and rotating said main shaft; 2. clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft; 3. a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest position, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft; 4. auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle; 5. operating means connected to said auxiliary actuating means for operating the same: 6. a first control means connected to said feed reversing means for actuating the same for a predetermined period upon operation of said foot treadle in the downward direction; and 7. a second control means connected to said operating means and said feed reversing means for actuating both of said means for a predetermined period upon operation of said foot treadle in the upward direction after the desired amount of sewing is finished, whereby there can be effected desired non-ravel seaming automatically and quickly at the start and end of sewing only by the operation of said treadle.
Claim 3
Dependent Claim
21 words
clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft;
Claim 4
Dependent Claim
21 words
clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft;
Claim 5
Dependent Claim
75 words
A control system according to claim 1, wherein said first control means includes a control means operatively connected to said feed reversing means For actuating the same after a predetermined period responsive to the operation of said foot treadle in the downward direction and another control means operatively connected to said feed reversing means for actuating the same for a predetermined period responsive to the completion of the predetermined period of the aforesaid control means.
Claim 6
Dependent Claim
21 words
clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft,
Claim 7
Dependent Claim
21 words
clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft,
Claim 8
Dependent Claim
21 words
clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft,
Claim 9
Dependent Claim
21 words
clutch means provided between said drive means and said main shaft for operatively connecting said drive means with said main shaft,
Claim 10
Dependent Claim
46 words
a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest position, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft,
Claim 11
Dependent Claim
46 words
a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest position, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft,
Claim 12
Dependent Claim
46 words
a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest posItion, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft,
Claim 13
Dependent Claim
46 words
a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest posItion, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft,
Claim 14
Dependent Claim
87 words
A control system according to the claim 1, wherein said second control means includes a control means operatively connected to said feed reversing means for actuating the same for a predetermined period responsive to the operation of said foot treadle in the upward direction and an another control means operatively connected to said operating means for actuating the same for a predetermined period substantially equal to or longer than that of said feed reversing means responsive to the operation of said foot treadle in the upward direction.
Claim 15
Dependent Claim
46 words
a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest position, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft;
Claim 16
Dependent Claim
46 words
a foot treadle operable from a rest position in a downward direction and in an upward direction beyond the rest position, said foot treadle operably connected to said clutch means and operable in said downward direction for actuating said clutch means to rotate said main shaft;
Claim 17
Dependent Claim
19 words
auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle;
Claim 18
Dependent Claim
19 words
auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle;
Claim 19
Dependent Claim
199 words
A control system according to claim 1, wherein said drive means, said clutch means, said auxiliary actuating means and said operating means constitute a clutch and brake motor assembly for rotating said main shaft, said assembly including: a. a motor having a bracket, b. a flywheel continuously rotated by said motor, c. a brake wheel supported on said bracket, d. a clutch disk operably connected to said main shaft and selectively movable between a first and a second position to be engaged in the first position with said flywheel for transmitting power to said main shaft or in the second position with said brake wheel for stopping the rotation of said main shaft, e. a main actuating lever movably supported on said bracket and operably connected with said clutch disk and said foot treadle for moving said clutch disk between said first and second positions, f. an auxiliary actuating lever movably supported on said bracket for moving said clutch disk in replacement of said main actuating lever, g. a fluid pressure cylinder provided between said main and said auxiliary actuating levers for operating said auxiliary actuating lever responsive to the operation of said foot treadle in the upward direction.
Claim 20
Dependent Claim
19 words
auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle,
Claim 21
Dependent Claim
19 words
auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle,
Claim 22
Dependent Claim
19 words
auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle,
Claim 23
Dependent Claim
19 words
auxiliary actuating means operably connected to said clutch means for actuating the same in replacement of said foot treadle,
Claim 24
Dependent Claim
13 words
operating means connected to said auxiliary actuating means for operating the same, and
Claim 25
Dependent Claim
13 words
operating means connected to said auxiliary actuating means for operating the same, and
Claim 26
Dependent Claim
12 words
operating means connected to said auxiliary actuating means for operating the same,
Claim 27
Dependent Claim
12 words
operating means connected to said auxiliary actuating means for operating the same,
Claim 28
Dependent Claim
69 words
A control system according to claim 4, wherein said main and auxiliary actuating levers are so designed that said main actuating lever moves said clutch disk through said auxiliary actuating lever when said foot treadle is operated in the downward direction, and said auxiliary actuating lever moves said clutch disk independently by the operation of said fluid pressure cylinder when said foot treadle is operated in the upward direction.
Claim 29
Dependent Claim
12 words
operating means connected to said auxiliary actuating means for operating the same:
Claim 30
Dependent Claim
12 words
operating means connected to said auxiliary actuating means for operating the same:
Claim 31
Dependent Claim
29 words
a first control means connected to said feed reversing means for actuating the same for a predetermined period upon operation of said foot treadle in the downward direction; and
Claim 32
Dependent Claim
29 words
a first control means connected to said feed reversing means for actuating the same for a predetermined period upon operation of said foot treadle in the downward direction; and
Claim 33
Dependent Claim
67 words
A control system according to claim 4, wherein the main and the auxiliary actuating levers are so designed that the main actuating lever moves the clutch panel independently when the foot treadle is operated in the downward direction, and the auxiliary actuating lever actuates the clutch panel also independently by the operation of the fluid pressure cylinder when the foot treadle is operated in the upward direction.
Claim 34
Dependent Claim
22 words
a needle positioning means provided between said drive means and said main shaft for stopping said needle in a predetermined position, and
Claim 35
Dependent Claim
22 words
a needle positioning means provided between said drive means and said main shaft for stopping said needle in a predetermined position, and
Claim 36
Dependent Claim
200 words
a circuit network interconnecting said feed reversing means and said operating means for actuating the same in response to the operation of said foot treadle, said network including a. a first control circuit operatively connected to said feed reversing means for actuating the same after a predetermined period responsive to the operation of said foot treadle in the downward movement, b. a second control circuit operatively connected to said feed reversing means for actuating the same for a predetermined period responsive to the completion of the predetermined period of said first control circuit, c. a third control circuit connected to said feed reversing means for actuating the same for a predetermined period responsive to thE operation of said foot treadle in the upward direction after the desired amount of sewing is finished, and d. a fourth control circuit connected to said operating means for actuating the same for a period substantially equal to or longer than that of said feed reversing means responsive to the operation of said foot treadle in the upward direction, whereby there can be performed desired non-ravel seaming automatically and quickly at the start and end of sewing only by the operation of said foot treadle.
Claim 37
Dependent Claim
200 words
a circuit network interconnecting said feed reversing means and said operating means for actuating the same in response to the operation of said foot treadle, said network including a. a first control circuit operatively connected to said feed reversing means for actuating the same after a predetermined period responsive to the operation of said foot treadle in the downward movement, b. a second control circuit operatively connected to said feed reversing means for actuating the same for a predetermined period responsive to the completion of the predetermined period of said first control circuit, c. a third control circuit connected to said feed reversing means for actuating the same for a predetermined period responsive to thE operation of said foot treadle in the upward direction after the desired amount of sewing is finished, and d. a fourth control circuit connected to said operating means for actuating the same for a period substantially equal to or longer than that of said feed reversing means responsive to the operation of said foot treadle in the upward direction, whereby there can be performed desired non-ravel seaming automatically and quickly at the start and end of sewing only by the operation of said foot treadle.
Claim 38
Dependent Claim
183 words
a circuit network interconnecting said feed reversing means, said operating means, said moving means for said thread cutting means and said needle positioning means, said network including a. a first control circuit operatively connected to said feed reversing means for actuating the same for a predetermined period upon operation of said foot treadle in the downward direction, b. a second control circuit for actuating said operating means and said feed reversing means for a predetermined period upon the operation of said foot treadle in the upward direction after the desired amount of sewing is finished, and c. a third control circuit for actuating said needle positioning means and said moving means for said thread cutting means responsive to the termination of the operation of said operating means and said feed reversing means, whereby there can be effected desired non-ravel seaming automatically and quickly at the start and end of sewing, said needle being stopped in a predetermined upper position by said needle positioning means, and said needle thread being cut by said thread cutting means, only by the operation of said foot treadle.
Claim 39
Dependent Claim
183 words
a circuit network interconnecting said feed reversing means, said operating means, said moving means for said thread cutting means and said needle positioning means, said network including a. a first control circuit operatively connected to said feed reversing means for actuating the same for a predetermined period upon operation of said foot treadle in the downward direction, b. a second control circuit for actuating said operating means and said feed reversing means for a predetermined period upon the operation of said foot treadle in the upward direction after the desired amount of sewing is finished, and c. a third control circuit for actuating said needle positioning means and said moving means for said thread cutting means responsive to the termination of the operation of said operating means and said feed reversing means, whereby there can be effected desired non-ravel seaming automatically and quickly at the start and end of sewing, said needle being stopped in a predetermined upper position by said needle positioning means, and said needle thread being cut by said thread cutting means, only by the operation of said foot treadle.
Claim 40
Dependent Claim
103 words
A control system for a sewing machine having a. a frame; b. a main shaft rotatably supported on said frame, c. a reciprocable needle supported on said frame and drivingly connected to said main shaft, d. work feeding means supported on said frame for advancing or reversing the travel of a work fabric according to the rotation of said main shaft, e. means supported on said frame for reversing the feeding direction of said work feeding means, f. thread cutting means movably supported on said frame, and g. means supported on said frame for moving said thread cutting means, said control system comprising:
Claim 41
Dependent Claim
103 words
A control system for a sewing machine having a. a frame; b. a main shaft rotatably supported on said frame, c. a reciprocable needle supported on said frame and drivingly connected to said main shaft, d. work feeding means supported on said frame for advancing or reversing the travel of a work fabric according to the rotation of said main shaft, e. means supported on said frame for reversing the feeding direction of said work feeding means, f. thread cutting means movably supported on said frame, and g. means supported on said frame for moving said thread cutting means, said control system comprising:
Claim 42
Dependent Claim
67 words
a second control means connected to said operating means and said feed reversing means for actuating both of said means for a predetermined period upon operation of said foot treadle in the upward direction after the desired amount of sewing is finished, whereby there can be effected desired non-ravel seaming automatically and quickly at the start and end of sewing only by the operation of said treadle.
Claim 43
Dependent Claim
67 words
a second control means connected to said operating means and said feed reversing means for actuating both of said means for a predetermined period upon operation of said foot treadle in the upward direction after the desired amount of sewing is finished, whereby there can be effected desired non-ravel seaming automatically and quickly at the start and end of sewing only by the operation of said treadle.
Claim 44
Dependent Claim
44 words
A control system according to claim 7, wherein said needle positioning means being adapted to arrest said needle in a lower position upon return of said foot treadle to its rest position from the downward direction after the desired amount of sewing is finished.
Claim 45
Dependent Claim
82 words
A control system for a sewing machine having a. a frame, b. a main shaft rotatably supported on said frame, c. a reciprocable needle supported on said frame and drivingly connected to said main shaft, d. work feeding means supported on said frame for advancing or reversing the travel of a work fabric according to the rotation of said main shaft, and e. means supported on said frame for reversing the feeding direction of said work feeding means, said control system comprising:
Claim 46
Dependent Claim
82 words
A control system for a sewing machine having a. a frame, b. a main shaft rotatably supported on said frame, c. a reciprocable needle supported on said frame and drivingly connected to said main shaft, d. work feeding means supported on said frame for advancing or reversing the travel of a work fabric according to the rotation of said main shaft, and e. means supported on said frame for reversing the feeding direction of said work feeding means, said control system comprising:
Claim 47
Dependent Claim
31 words
A control system according to the claim 9, wherein said second and third control circuits are formed into a single timer circuit capable of setting two different periods for non-ravel seaming.
Claim 48
Dependent Claim
41 words
A control system according to claim 9, wherein said circuit network is provided with a switching means to energize at least one of said four circuits responsive to the rotation of said main shaft by the operation of said foot treadle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |