GB455003A - Improvements in and relating to vacuum pumps - Google Patents
Improvements in and relating to vacuum pumpsInfo
- Publication number
- GB455003A GB455003A GB12695/36A GB1269536A GB455003A GB 455003 A GB455003 A GB 455003A GB 12695/36 A GB12695/36 A GB 12695/36A GB 1269536 A GB1269536 A GB 1269536A GB 455003 A GB455003 A GB 455003A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pipe
- switch
- supplied
- current
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/03—Torque
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
Abstract
455,003. Rotary vacuum pumps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. May 5, 1936, No. 12695. Convention date, May 7, 1935. [Class 110 (ii)] [See also Groups XXVIII and XXIX] A submerged rotary vacuum pump 1, driven by an electric motor 2, has a suction pipe 4 open to the atmosphere while the pump is running up to working speed. After a time interval a valve 25 closes the pipe 4 to atmosphere, and simultaneously opens an inlet valve 14 to connect the pipe 4 with a pipe 12 which may lead to a mercury arc rectifier. Current for the motor 2 is supplied through lines 8 controlled by a manually operated switch 11 or control means 7. The valve 14 is secured to a bellows 19 and has a rubber disc 16 which seats on the open end of the pipe 4. A second, or relief valve, has a rubber seating 25 which co-operates with the open end 26 of the valve stem 18. The relief valve may move between stops 28, 29. A hole 32 in the valve stem leads to a hole 33 in the disc 14, and so to the pipe 4. To actuate the valve change-over, a solenoid plunger 35 is coupled by links 36, 37, with the valve stem 18. The solenoid is supplied with current by lines 38 through a switch means 39 which comprises a relay 40, the actuating coil 41 of which is supplied with current through contacts 42 of the switch 11 and through a thermostatic switch 43 having a heater element 44 to close contacts 45 in one of the solenoid leads 38 and simultaneously short-circuit the heater 44 through contacts 46.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US455003XA | 1935-05-07 | 1935-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB455003A true GB455003A (en) | 1936-10-12 |
Family
ID=21938241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12695/36A Expired GB455003A (en) | 1935-05-07 | 1936-05-05 | Improvements in and relating to vacuum pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB455003A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0519880A1 (en) * | 1991-06-17 | 1992-12-23 | GALILEO VACUUM TEC S.p.A. | Inlet shut-off valve for rotary piston vacuum pump |
-
1936
- 1936-05-05 GB GB12695/36A patent/GB455003A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0519880A1 (en) * | 1991-06-17 | 1992-12-23 | GALILEO VACUUM TEC S.p.A. | Inlet shut-off valve for rotary piston vacuum pump |
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