GB492415A - Air or like fluid pressure operated brake system - Google Patents
Air or like fluid pressure operated brake systemInfo
- Publication number
- GB492415A GB492415A GB22766/37A GB2276637A GB492415A GB 492415 A GB492415 A GB 492415A GB 22766/37 A GB22766/37 A GB 22766/37A GB 2276637 A GB2276637 A GB 2276637A GB 492415 A GB492415 A GB 492415A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- valve
- brake cylinder
- cylinder pressure
- pressure
- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
- B60T15/184—Railway control or brake valves
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
Abstract
492,415. Fluid - pressure brakes. HARDY MASCHINENFABRIK UND GIESSEREI AKT.-GES., GEB. Aug. 19, 1937, No. 22766. Convention date, Aug. 29, 1936. [Class 103 (i)] in a triple valve the ratio of the areas of the pistons on which the train pipe and brake cylinder pressure act is variable during braking. The piston on which brake cylinder pressure acts to return the valve to lap position is in two relatively movable parts 2, 2a. The larger part 2a is only active to control the valve by engaging flange 6 when a spring 8 yields. Thus the preliminary movements of the valve are readily susceptible to the changes of train pipe pressure above the piston 1, being unopposed except for the brake cylinder pressure acting on the small area of the piston 2. There is a constant pressure in the chamber K. In a modification the piston 1 is in two parts which move together until the spring between them yields and thereafter the smaller part only is active.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT492415X | 1936-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB492415A true GB492415A (en) | 1938-09-20 |
Family
ID=3675167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22766/37A Expired GB492415A (en) | 1936-08-29 | 1937-08-19 | Air or like fluid pressure operated brake system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB492415A (en) |
-
1937
- 1937-08-19 GB GB22766/37A patent/GB492415A/en not_active Expired
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