GB989691A - Improvements relating to foot or knee operable speed-control means for electrically-driven sewing machines - Google Patents
Improvements relating to foot or knee operable speed-control means for electrically-driven sewing machinesInfo
- Publication number
- GB989691A GB989691A GB171663A GB171663A GB989691A GB 989691 A GB989691 A GB 989691A GB 171663 A GB171663 A GB 171663A GB 171663 A GB171663 A GB 171663A GB 989691 A GB989691 A GB 989691A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- contacts
- foot
- sac
- fixed
- 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
- D05B69/14—Devices for changing speed or for reversing direction of rotation
- D05B69/18—Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
989, 691. Sewing machines. I. A. LESLIE. April 7, 1964 [Jan. 15, 1963], No. 1716/63. Heading D1G. [Also in Division H2] In an electrically-driven sewing machine, a device for controlling the speed of the driving motor is operated by fluid-pressure responsive means, pneumatically or hydraulically remotery controlled by foot-or-knee operable control means. An insulating bar 6, Fig. 2, carries spacedapart metal contacts 8 and is fixed to an insulating bar 5 carrying a resistance wire coil 4 in series with the driving motor, the contacts 8 engaging the coil 4 and constituting taps thereof. A resilient metal contact arm 7 is fixed at one end to bar 6 and is normally disengaged from the contacts 8. A fixed, inflatable air sac ,16 is disposed beneath a protuberance 15 at the free end of arm 7 and is connected by flexible tubing 17 to a foot-operable air bulb 18. Pressure on the latter serves to inflate sac 16 for raising arm 7 into progressive engagement with contacts 8. The speed of the motor is thereby determined by the degree of inflation of sac 16. A fan on the mirror shaft directs air on to coil 4. In a modification, Fig. 6, a wire coil 19 is engaged by contacts 20 on a bar 21. One end of a contact arm 22 is pivoted at 26 to one end of an oppositely-projecting resilient carrier arm 27 fixed at its other end to bar 21. A fixed air sac 23, disposed adjacent the free end of arm 21, is connected by flexible tubing 25 to a foot-operable air bulb 24. Arm 22 has a convex edge 28 which, when arm 22 is actuated by compression of bulb 24, engages the contacts only one at a time. A oneway air intake valve may be fitted to the footoperable bulb. A mechanical linkage may be interposed between the inflatable sac and the contact arm. The operating fluid may be water. The pressure responsive means may have metal diaphragms or metal bellows. The resistance coil may be replaced by a carbon-pile variable resistance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB171663A GB989691A (en) | 1963-01-15 | 1963-01-15 | Improvements relating to foot or knee operable speed-control means for electrically-driven sewing machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB171663A GB989691A (en) | 1963-01-15 | 1963-01-15 | Improvements relating to foot or knee operable speed-control means for electrically-driven sewing machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB989691A true GB989691A (en) | 1965-04-22 |
Family
ID=9726778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB171663A Expired GB989691A (en) | 1963-01-15 | 1963-01-15 | Improvements relating to foot or knee operable speed-control means for electrically-driven sewing machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB989691A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2376240A1 (en) * | 1976-12-29 | 1978-07-28 | Mefina Sa | ELECTRIC SEWING MACHINE MOTOR CONTROL DEVICE |
US4413214A (en) * | 1981-11-12 | 1983-11-01 | The Singer Company | Vented pneumatic foot controller |
GB2303644A (en) * | 1995-07-27 | 1997-02-26 | Philip Shad | Device for controlling sewing-machine |
-
1963
- 1963-01-15 GB GB171663A patent/GB989691A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2376240A1 (en) * | 1976-12-29 | 1978-07-28 | Mefina Sa | ELECTRIC SEWING MACHINE MOTOR CONTROL DEVICE |
US4261273A (en) * | 1976-12-29 | 1981-04-14 | Mefina S.A. | Pneumatic speed control for an electric sewing machine |
US4413214A (en) * | 1981-11-12 | 1983-11-01 | The Singer Company | Vented pneumatic foot controller |
GB2303644A (en) * | 1995-07-27 | 1997-02-26 | Philip Shad | Device for controlling sewing-machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1402435A (en) | Rotary compressors | |
ES439045A1 (en) | Surgical suction device | |
ES403632A1 (en) | Electrically operated valves for delivering fluid under pressure | |
SE7605679L (en) | AUTOMATIC PUMP EQUIPMENT | |
GB1386961A (en) | Speed-responsive systems | |
GB989691A (en) | Improvements relating to foot or knee operable speed-control means for electrically-driven sewing machines | |
US2484781A (en) | Windshield wiper motor control | |
GB1401719A (en) | Sump pump system and pressure responsive switch assembly therefor | |
GB1143184A (en) | Improvements in motor speed responsive arrangement for controlling motor winding circuits | |
US2556675A (en) | Control system | |
ES416543A1 (en) | Servo steering device, especially for automobiles | |
ES316370A1 (en) | Hydraulic control device. (Machine-translation by Google Translate, not legally binding) | |
GB1425183A (en) | Sewing machine | |
US2983346A (en) | Automatic clutch engaging and disengaging device | |
US3368640A (en) | Speed control system for automotive vehicles | |
US3099254A (en) | Engine speed governor | |
US1536264A (en) | Pump regulator | |
GB1446949A (en) | Systems comprising fluid flor control valves | |
GB1134342A (en) | Vacuum control particularly for a tape loop box | |
US2135248A (en) | Compressor control | |
GB1389753A (en) | Electro-mechanical lifting appliance | |
US2221855A (en) | Pumping apparatus | |
US2685277A (en) | Snap action pneumatic actuator | |
US3336766A (en) | Washing machine system and parts therefor | |
FR2353767A1 (en) | Hydraulic system with motor driven variable displacement pump - is adjusted by separate circuit responding to hydraulic system pressure |