GB346238A - Automatic rapid-lowering device for the trolleys of electric vehicles - Google Patents
Automatic rapid-lowering device for the trolleys of electric vehiclesInfo
- Publication number
- GB346238A GB346238A GB21041/30A GB2104130A GB346238A GB 346238 A GB346238 A GB 346238A GB 21041/30 A GB21041/30 A GB 21041/30A GB 2104130 A GB2104130 A GB 2104130A GB 346238 A GB346238 A GB 346238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- trolley
- air
- piston
- bar
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
- B60L5/32—Devices for lifting and resetting the collector using fluid pressure
Abstract
346,238. Electric trollies. MASCHINENFABRIK OERLIKON, Oerlikon, near Zurich, Switzerland. July 11, 1930, No. 21041. Convention date, July 11, 1929. [Class 104 (iii).] Apparatus for quickly lowering a pantograph trolley when it meets an obstruction comprises a pair of bars 1, 2, cross-connected to levers 5, 6 mounted on shafts 3, 4. The lever 6 carries a sleeve 11 having two cam surfaces 9, 10 adapted to be engaged by rollers 13, 14 mounted in frames 12, 18 on the ends of the bars 1, 2. When the trolley meets a resistance in the direction of the arrow A, the pantograph 19, 20 turns the shafts 3, 4 anticlockwise so that the bar is pulled towards the right and the bar 2 is pushed towards the left. This causes the roller 13 to move along the cam surface 9 so that the bar 1 is moved laterally to bring a cam 28 against a rod 25 engaging a rod 30. Movement of the rod 30 releases a latch 31 and permits a spring 33 to expand and move a lever 34 connected to a valve 35 controlling the supply of compressed air to cylinders 41, 43. The air escapes from the cylinder 41 and a spring 44 moves the piston 47 to pull the trolley down through the link 49. To raise the trolley, the driver releases the air from the pipe 36, so that the air escapes from the cylinder 41 and a spring 45 moves the piston 50 to return the valve to the position in Fig. 1 and compress the spring 33. Air is readmitted to the pipe 36, and the cylinders 41, 43 become charged, so that the piston 47 compresses the spring 44 and raises the trolley.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH346238X | 1929-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB346238A true GB346238A (en) | 1931-04-09 |
Family
ID=4507564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21041/30A Expired GB346238A (en) | 1929-07-11 | 1930-07-11 | Automatic rapid-lowering device for the trolleys of electric vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB346238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002063878A2 (en) | 2001-02-02 | 2002-08-15 | Opentv, Inc. | A method and apparatus for reformatting of content fir display on interactive television |
-
1930
- 1930-07-11 GB GB21041/30A patent/GB346238A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002063878A2 (en) | 2001-02-02 | 2002-08-15 | Opentv, Inc. | A method and apparatus for reformatting of content fir display on interactive television |
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