GB158478A - A compressed-air control mechanism for use in connection with the brake cylinder or cylinders of railway, tramway, motor-road, and the like vehicles - Google Patents
A compressed-air control mechanism for use in connection with the brake cylinder or cylinders of railway, tramway, motor-road, and the like vehiclesInfo
- Publication number
- GB158478A GB158478A GB1060620A GB1060620A GB158478A GB 158478 A GB158478 A GB 158478A GB 1060620 A GB1060620 A GB 1060620A GB 1060620 A GB1060620 A GB 1060620A GB 158478 A GB158478 A GB 158478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- valve
- reservoir
- compressor
- brakes
- 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
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/08—Brake cylinders other than ultimate actuators
- B60T17/10—Two or more cylinders acting on the same brake with means for rendering them effective selectively or successively, the number of effective cylinders being variable
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
Abstract
158,478. Harrop, A. T. April 16, 1920. Fluid-pressure.-Relates to fluid-pressure brakes of the kind in which the brake cylinder is provided with differential pistons the pressure on one of which is reduced to apply the brake, and consists in effecting the reduction in pressure by a compressor which discharges the air into a reservoir from which it is allowed to return to release the brake. In the running position shown in Fig. 2, both of the chambers 2, 8 in which the differential pistons 3, 4 work are subject to the pressure in the reservoir A so that the brakes are held off by the pressure acting on the larger piston 4. The pressure is maintained in the reservoir A by a compressor B and a valve V. As long as the pressure is at the required value, the piston V<1> of this valve is raised against the spring S as shown, so that the air is merely circulated from the reservoirs through the pipes 19, 18, the driver's valve C, pipe 20, and the compressor B. If the pressure falls by leakage, the piston V<1> of the valve V falls below the pipe 18 and the compressor then draws air from the atmosphere through ports 21 and pipe 18. To apply the brakes, the valve C is moved to connect the pipes 7, 20, whereupon the compressor draws air from the chamber 2 and compresses it into the reservoir A. When the desired application has been made, the valve C is moved to blank the port of the pipe 7 and to connect the pipes 18, 20 so that the pressure is maintained in the reservoir A and chamber 8 as in running condition. When the valve C is returned to the position shown in Fig. 2, air flows back from the reservoir A to the chamber 2 by pipes 17, 7 and the brakes are released. If the compressor or other part should fail, the brakes can be applied by venting the chamber 2 to atmosphere through the port 16 in the valve C. A non-return valve 10 is disposed in the pipe 9 leading to the chamber 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1060620A GB158478A (en) | 1920-04-16 | 1920-04-16 | A compressed-air control mechanism for use in connection with the brake cylinder or cylinders of railway, tramway, motor-road, and the like vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1060620A GB158478A (en) | 1920-04-16 | 1920-04-16 | A compressed-air control mechanism for use in connection with the brake cylinder or cylinders of railway, tramway, motor-road, and the like vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB158478A true GB158478A (en) | 1921-02-10 |
Family
ID=9970933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1060620A Expired GB158478A (en) | 1920-04-16 | 1920-04-16 | A compressed-air control mechanism for use in connection with the brake cylinder or cylinders of railway, tramway, motor-road, and the like vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB158478A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830803A (en) * | 1987-01-16 | 1989-05-16 | Kyowa Gas Chemical Industry Co., Ltd. | Method of making a molded article of methacrylic resin |
| US5006415A (en) * | 1987-01-16 | 1991-04-09 | Kyowa Gas Chemical Industry Co., Ltd. | Molded article of methacrylic resin |
-
1920
- 1920-04-16 GB GB1060620A patent/GB158478A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830803A (en) * | 1987-01-16 | 1989-05-16 | Kyowa Gas Chemical Industry Co., Ltd. | Method of making a molded article of methacrylic resin |
| US5006415A (en) * | 1987-01-16 | 1991-04-09 | Kyowa Gas Chemical Industry Co., Ltd. | Molded article of methacrylic resin |
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