GB447048A - Improvements relating to railway track brakes operated by the weight of a vehicle - Google Patents
Improvements relating to railway track brakes operated by the weight of a vehicleInfo
- Publication number
- GB447048A GB447048A GB31547/34A GB3154734A GB447048A GB 447048 A GB447048 A GB 447048A GB 31547/34 A GB31547/34 A GB 31547/34A GB 3154734 A GB3154734 A GB 3154734A GB 447048 A GB447048 A GB 447048A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- valve
- pipe
- pump
- piston
- 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
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/02—Track brakes or retarding apparatus
- B61K7/12—Track brakes or retarding apparatus electrically controlled
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
447,048. Reciprocating pumps. VEREINIGTE EISENBAHN - SIGNALWERKE GES., Siemensstadt, Berlin. Nov. 2, 1934, No. 31547. Convention date, Aug. 24. [Class 102 (i)] [See also Group XXXIV] Track brakes on permanent way operated by the weight of the vehicle are lifted into operative position by water pressure derived from a two stage pump, the low pressure stage is put out of action by a known suction valve releasing device operated by the brake operating fluid and the high pressure stage is put out of action by a pressure regulator when the brake pressure selected in reached. To operate the brake the brake hand lever 1 of the regulating valve is moved to the right to allow valves a, b to close whereupon, pumps N, H pump water into a pipe 5 leading to the brake apparatus and when the pressure in the pipe attains a certain value it acts on a piston 8 connected to the suction valve 10 of the low pressure pump N raising this valve and putting the pump out of operation. The pump H increases the pressure in the pipe 5 until a piston 12 is moved against a spring 14 and re-opens the valve b which allows pressure-fluid to pass from the pipe 5 by a pipe 16 to raise a piston 17 connected to the suction valve 18 of the pump H which is thereupon put out of action. To increase the pressure in the pipe 5 the lever 1 is moved further to the right to close the valve band open a valve c to release pressure from piston 17 and the pump H operates again until the pressure in the pipe 5 is sufficient to again move the piston 12. To reduce pressure the hand lever is retracted to open the valve a and the pressure fluid escapes until the valve a recloses by movement of the piston 12. In a modification the high pressure stage has no suction valve releasing means and is switched off by the regulator which byepasses its discharge back to the reserve liquid tank when the pressure in the brake pipe has attained a value corresponding to the position of the hand lever.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE447048X | 1934-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB447048A true GB447048A (en) | 1936-05-04 |
Family
ID=6537960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31547/34A Expired GB447048A (en) | 1934-08-24 | 1934-11-02 | Improvements relating to railway track brakes operated by the weight of a vehicle |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB447048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699455A (en) * | 1948-03-01 | 1955-01-11 | Hooker Electrochemical Co | Isolation of gamma benzene hexachloride |
-
1934
- 1934-11-02 GB GB31547/34A patent/GB447048A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699455A (en) * | 1948-03-01 | 1955-01-11 | Hooker Electrochemical Co | Isolation of gamma benzene hexachloride |
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