GB519891A - Improvements in or relating to multistage control devices for power driven vehicles including a plurality of steam engines - Google Patents
Improvements in or relating to multistage control devices for power driven vehicles including a plurality of steam enginesInfo
- Publication number
- GB519891A GB519891A GB28965/38A GB2896538A GB519891A GB 519891 A GB519891 A GB 519891A GB 28965/38 A GB28965/38 A GB 28965/38A GB 2896538 A GB2896538 A GB 2896538A GB 519891 A GB519891 A GB 519891A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cut
- engines
- cams
- valve
- stages
- 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
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
- B61C17/12—Control gear; Arrangements for controlling locomotives from remote points in the train or when operating in multiple units
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
519,891. Steam engine valve gears. SCHWEIZERISCHE LOKOMOTIV-UND 'MASCHINENFABRIK. Oct. 6, 1938, No. 28965. Convention date, Oct. 7, 1937. [Class 122 (ii)] [Also in Group XXXI] In vehicles of the kind propelled by a plurality of steam engines, the valve gears of all the engines are adjusted in successive stages to various cut-offs by a single control member in such a manner that as the control member is advanced in steps the valve gears are alternately set (1) to the same cut-offs for all engines and (2) to cut-off differing in phase. Thus the total power output of all the engines can be graduated in a larger number of stages than that provided by the number of cut-off stages. In the construction shown in Figs. 1 and 2 the inlet valves 1, 2 of two steam engines are operated by slidable cam shafts 3 driven from the engine through gears 3a and having cams with three stages O, I, II acting on rollers 4 on the valve stems. The cam shafts are slid, to bring the various cam stages into use, by means of rollers 13, 13a acting through fluid-pressure servomotors 8, 6 these rollers being engaged by slidable stepped cams 14, 14a controlled by a hand lever 15. In the position shown in Fig. 1, the rollers 13, 13a are both on the step I of the cams 14, 14a and both valves 1 have the same cut-off, but the cams 14, 14a differ in phase, by the distance a equal to half the length 2a of a step on each cam. Thus, when the lever 15 is moved to the position shown in Fig. 2, the roller 13a is still on step I but roller 13 is on step II and valve 1 has a different cut-off to valve 2. The engines may be arranged in groups of one or more, there being as many gradations to each cut-off stage as there are groups. The cams 14, 14a may be slid by screw-and-nut gear 17, Fig. 3, controlled by a single hand-wheel and bevel gears 18, or they may be replaced by rotary cams. The engine cam gear 3, 3a may be that described in Specification 245,413, [Class 122 (ii)]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE519891X | 1937-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB519891A true GB519891A (en) | 1940-04-09 |
Family
ID=6550700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28965/38A Expired GB519891A (en) | 1937-10-07 | 1938-10-06 | Improvements in or relating to multistage control devices for power driven vehicles including a plurality of steam engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB519891A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253399A (en) * | 1979-12-10 | 1981-03-03 | Kansas City Southern Railway Company | Railway locomotive fuel saving arrangement |
| US4401035A (en) * | 1980-07-03 | 1983-08-30 | Kansas City Southern Railway Company | Control device for multiple unit locomotive systems |
-
1938
- 1938-10-06 GB GB28965/38A patent/GB519891A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253399A (en) * | 1979-12-10 | 1981-03-03 | Kansas City Southern Railway Company | Railway locomotive fuel saving arrangement |
| US4401035A (en) * | 1980-07-03 | 1983-08-30 | Kansas City Southern Railway Company | Control device for multiple unit locomotive systems |
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