GB191503948A - Improvements relating to Vacuum Brake Apparatus. - Google Patents
Improvements relating to Vacuum Brake Apparatus.Info
- Publication number
- GB191503948A GB191503948A GB191503948DA GB191503948A GB 191503948 A GB191503948 A GB 191503948A GB 191503948D A GB191503948D A GB 191503948DA GB 191503948 A GB191503948 A GB 191503948A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- atmosphere
- rod
- open
- passage
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/465—Vacuum systems for railway vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
3948. Luard, E. S. March 12. Pistons.-The weight of the piston c of a vacuum-brake cylinder a is counterbalanced by exposing a part of the underside of the piston to the atmosphere either permanently or during the initial movement of the piston in applying the brakes. According to the arrangement shown in Fig. 1, the necessary exposed area is obtained by providing a piston-rod d of large cross-section. The piston-rod is hollow and open to the space above the piston, which is thus effectively increased. The contacting faces g of the piston and the sleeve b are faced to form a joint. As shown in Fig. 2, an annular rib l on the piston is adapted to seat at m on the cylinder base, and the area of the piston thus enclosed is open to atmosphere by way of a passage k which is, however, closed after the initial upward movement of the piston, by a spring valve j. Alternatively, the passage k may be formed in the piston-rod with its lower orifice so disposed as to be only open to atmosphere when the piston is in the lowest position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191503948T | 1915-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191503948A true GB191503948A (en) | 1916-02-17 |
Family
ID=32673957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191503948D Expired GB191503948A (en) | 1915-03-12 | 1915-03-12 | Improvements relating to Vacuum Brake Apparatus. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191503948A (en) |
-
1915
- 1915-03-12 GB GB191503948D patent/GB191503948A/en not_active Expired
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