GB743637A - Improvements in or relating to sewing machines - Google Patents
Improvements in or relating to sewing machinesInfo
- Publication number
- GB743637A GB743637A GB34866/53A GB3486653A GB743637A GB 743637 A GB743637 A GB 743637A GB 34866/53 A GB34866/53 A GB 34866/53A GB 3486653 A GB3486653 A GB 3486653A GB 743637 A GB743637 A GB 743637A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- gear
- gears
- disc
- arm
- 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
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
- D05B69/32—Vibration-minimising devices
Abstract
743,637. Sewing machines. UNION SPECIAL MACHINE CO. Dec. 15, 1953 [Dec. 17, 1952], No. 34566/53. Class 112. [Also in Group XXXII] Feed by dogs and needle; upper and lower shafts, connecting.-The invention relates to means for preventing the transmission of torsional vibrations to gears 55 to 58 in the drive to stitch-forming elements 51, 52 of a sewing machine. A needle bar 29 is carried in a frame 32 pivotally mounted to the machine frame at 33. The bar 29 is reciprocable by the action of a connecting rod 24 driven by a main drive shaft 15. An eccentric 45 rigid with the shaft 15 imparts oscillatory movement to the frame 32 by acting through a rocker rod (not shown), arm 40, sleeve 20 and arm 36. The shaft 15 is connected by a gear train 64, 63, 62, to a shaft 59. Torsional vibrations are present in the shaft 15 due to the periodic accelerations of the needle bar. A flexible connection provided between the gear 62 and the shaft 59, constitutes a torsional - vibration damper (see Group XXXII). As shown in Figs. 1 and 2, the gear 62 is connected to the shaft 59 through resilient rods 91, 92, and a disc 88 rigid with the shaft 59. The disc 88 may constitute a fly-wheel. In a modified construction (Figs. 5 and 6, not shown) the rods 91, 92 are replaced by an annulus of rubber which is coaxial with the shaft 59 and is bonded on one side face to the gear 62 and on the other face to the disc 88. The shaft 59 drives rotary hooks 51, 52 through the respective pairs of gears 55, 57 and 56, 58. Up-and-down motion of a feed dog is derived from an eccentric 72 on the shaft 59. Feedrocking movements of the feed dog are derived from a feed bar 71 operable by a shaft 76, oscillated by the action of linkage 78, 79, coupled at 82 to the arm 40. The flexibility of the coupling between the gear 62 and the shaft 59 should be such that the resonant frequency of the shaft 59 and gears 55-58 should be “ to ¥ of the speed of the shaft 15. U.S.A. Specification 2,329,484 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US326498A US2765759A (en) | 1952-12-17 | 1952-12-17 | Sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB743637A true GB743637A (en) | 1956-01-18 |
Family
ID=23272463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34866/53A Expired GB743637A (en) | 1952-12-17 | 1953-12-15 | Improvements in or relating to sewing machines |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2765759A (en) |
| DE (1) | DE960148C (en) |
| GB (1) | GB743637A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4406174A (en) * | 1981-02-17 | 1983-09-27 | The Singer Company | Noise reducing arrangement for gears |
| DE4004892C2 (en) * | 1990-02-16 | 1995-11-16 | Duerkopp Adler Ag | Sewing machine with a vibration decoupler |
| US5870960A (en) * | 1997-09-30 | 1999-02-16 | Capel Incorporated | Looptaker driving arrangement and method for zig-zag sewing machines |
| US8070632B2 (en) * | 2009-05-30 | 2011-12-06 | The Gates Corporation | Torsional Compensator |
| JP7241113B2 (en) * | 2021-03-10 | 2023-03-16 | 本田技研工業株式会社 | Driving device used for sewing device |
| CN115787212B (en) * | 2023-02-01 | 2023-05-02 | 海安迪斯凯瑞探测仪器有限公司 | Linkage sewing head based on robot |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US213391A (en) * | 1879-03-18 | Improvement in button-hole sewing-machines | ||
| US95396A (en) * | 1869-09-28 | David weimer | ||
| AT36686B (en) * | 1906-10-09 | 1909-03-26 | Siemens Schuckertwerke Wien | Shaft coupling. |
| US1232922A (en) * | 1917-01-02 | 1917-07-10 | John O Hobbs | Flexible drive-shaft. |
| US1548458A (en) * | 1924-04-24 | 1925-08-04 | Singer Mfg Co | Resilient gear drive for electric sewing machines |
| DE423195C (en) * | 1924-04-24 | 1925-12-22 | Singer Mfg Co | Flexible wheel drive for sewing machines and other small machines |
| US1640670A (en) * | 1925-12-16 | 1927-08-30 | Charles D R Schaeffer | Shaft construction |
| US1804906A (en) * | 1929-10-31 | 1931-05-12 | Ernest E Wemp | Gear silencer construction |
| DE616400C (en) * | 1932-05-15 | 1935-07-27 | Emil Stutznaecker | Sewing machine in which the rotating machine parts are balanced by rotating counterweights |
| US2097246A (en) * | 1935-06-08 | 1937-10-26 | Union Special Machine Co | Sewing machine |
| US2329484A (en) * | 1940-03-30 | 1943-09-14 | Union Special Machine Co | Sewing machine |
| US2444904A (en) * | 1943-12-04 | 1948-07-06 | Lord Mfg Co | Bonded rubber joint for couplings and the like and method of making the same |
| US2633008A (en) * | 1948-10-20 | 1953-03-31 | Berne Tocci Guilbert | Resilient coupling |
-
1952
- 1952-12-17 US US326498A patent/US2765759A/en not_active Expired - Lifetime
-
1953
- 1953-12-15 GB GB34866/53A patent/GB743637A/en not_active Expired
- 1953-12-17 DE DEU2532A patent/DE960148C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2765759A (en) | 1956-10-09 |
| DE960148C (en) | 1957-03-14 |
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