GB888878A - Improvements relating to railway vehicle buffers - Google Patents
Improvements relating to railway vehicle buffersInfo
- Publication number
- GB888878A GB888878A GB3072758A GB3072758A GB888878A GB 888878 A GB888878 A GB 888878A GB 3072758 A GB3072758 A GB 3072758A GB 3072758 A GB3072758 A GB 3072758A GB 888878 A GB888878 A GB 888878A
- Authority
- GB
- United Kingdom
- Prior art keywords
- orifices
- railway vehicle
- characteristic
- plunger
- 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
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G11/00—Buffers
- B61G11/12—Buffers with fluid springs or shock-absorbers; Combinations thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
888,878. Railway vehicle buffers. DOWTY HYDRAULIC UNITS Ltd. Dec. 18, 1959 [Sept. 25, 1958], No. 30727/58. Class 103(5). A railway vehicle buffer comprises a spring 21 having a rising load/travel characteristic A, and a piston and, cylinder 12, 8 which upon buffer compression displaces liquid into a reservoir 17 through orifices such as 15 whose effective area falls during compression, wherein the rate at which the effective area falls during compression is so reduced that for a specified vehicle weight and maximum permissible velocity of impact, the resistance provided by the orifices has a falling load/travel characteristic B which added to the spring characteristic A provides a substantially uniform characteristic C. To achieve this the velocity of the plunger 3 should fall uniformly from the moment of impact, and the flow of liquid displaced by the piston from the cylinder should also fall uniformly. The orifices 15 should be either uniformly spaced and increase progressively in hole size towards the headstock 1, or should be of the same hole size but spaced progressively closer together as shown. A split ring 5 sliding in a bore 6 provides an inner bearing for the plunger 3 and an extension limit stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3072758A GB888878A (en) | 1958-09-25 | 1958-09-25 | Improvements relating to railway vehicle buffers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3072758A GB888878A (en) | 1958-09-25 | 1958-09-25 | Improvements relating to railway vehicle buffers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB888878A true GB888878A (en) | 1962-02-07 |
Family
ID=10312206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3072758A Expired GB888878A (en) | 1958-09-25 | 1958-09-25 | Improvements relating to railway vehicle buffers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB888878A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4011439A1 (en) * | 1990-04-09 | 1991-10-10 | Fischer Ag Georg | Buffer with hydraulic damper |
| US5908123A (en) * | 1997-01-21 | 1999-06-01 | Keystone Industries, Inc. | Rail car buffer and method |
| US5927523A (en) * | 1997-05-30 | 1999-07-27 | Keystone Industries, Inc. | Rail car buffer |
| EP0933279A1 (en) * | 1998-02-03 | 1999-08-04 | Keystone Industries, Inc. | Rail car buffer |
-
1958
- 1958-09-25 GB GB3072758A patent/GB888878A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4011439A1 (en) * | 1990-04-09 | 1991-10-10 | Fischer Ag Georg | Buffer with hydraulic damper |
| US5908123A (en) * | 1997-01-21 | 1999-06-01 | Keystone Industries, Inc. | Rail car buffer and method |
| US5927523A (en) * | 1997-05-30 | 1999-07-27 | Keystone Industries, Inc. | Rail car buffer |
| EP0933279A1 (en) * | 1998-02-03 | 1999-08-04 | Keystone Industries, Inc. | Rail car buffer |
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