GB711213A - Improved change speed gear for motor vehicles - Google Patents
Improved change speed gear for motor vehiclesInfo
- Publication number
- GB711213A GB711213A GB22617/50A GB2261750A GB711213A GB 711213 A GB711213 A GB 711213A GB 22617/50 A GB22617/50 A GB 22617/50A GB 2261750 A GB2261750 A GB 2261750A GB 711213 A GB711213 A GB 711213A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gear
- shaft
- clutch
- gears
- engine
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0293—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being purely mechanical
- F16H61/0295—Automatic gear shift control, e.g. initiating shift by centrifugal forces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2710/00—Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing
- F16H2710/04—Control dependent on speed
- F16H2710/06—Control dependent on speed only the toothed wheels remain engaged
- F16H2710/08—Control dependent on speed only the toothed wheels remain engaged the control being mechanical
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
711,213. Variable-speed gearing; clutches. KREIS, F., and S.I.B.A. SOC. ITALIANA BREVETTI AUTOMOBILISTICI AR.L. Sept. 14, 1950 [Dec. 6, 1949], No. 22617/50. Class 80 (2) A partially automatic variable speed gear for a vehicle providing five forward speeds plus reverse, comprises a three-position manual control of three ball clutches and three automaticallyengaging centrifugal clutches A, B, C, the clutches B, C having additional centrifugal weights arranged so that the driver may hasten the automatic engagement by temporarily releasing the throttle. In first gear, the engine is connected through clutch A to a gear 1 which drives a countershaft 4 through gear 2 and freewheel 3. A gear 5 is connected to the countershaft 4 by a ball-clutch 6 and drives the output shaft 15 through gear 11 and freewheel 12. As the speed increases the weights B which are rotated from the countershaft through gears 13, 14, move outwards to clutch gear 14 to the engine and engage second gear, the engine then driving the shaft 15 through gears 14, 13, 5, 11 and freewheel 12, the freewheel 3 overrunning. As speed further increases, the weights C carried by shaft 15 move outwards to clutch the shaft directly to the engine and thus engage top gear, both freewheels 3 and 12 overrunning. A greater step-down ratio in first and second gears may be obtained by transmitting the drive from countershaft 4 to the shaft 15 through gears on a parallel secondary shaft 17, Fig. 3. This transmission is obtained by sliding ball-clutch sleeve 7, Fig. 1, to the right to allow the balls 6 to move out of grooves in the shaft 4 and thus disengage the gear 5 from this shaft a second ballclutch sleeve 9, Fig. 3, connected to the sleeve 7. being simultaneously moved to cause balls 16 to leave a recess in the sleeve and enter grooves in the shaft 17, thereby coupling gear 18 to a gear 21 on the shaft 17. Countershaft 4 then drives shaft 15 through gears 20, 21; 18, 19; and 19, 11. To engage reverse gear, the sleeves 7 and 9 are moved further to the right, whereby ball clutches 6, 16 are disengaged and a ball clutch 22 is engaged to couple gear 21 to gear 23, the latter gear directly driving a gear 24 on the shaft 15. For engine braking, the freewheel 12 is locked by sliding gear 24 to interengage corresponding claws on the gears 24, 11. The weights B, C each have pairs of balls 52 cooperating with spring-loaded wedges as described in Specification 702,796, and their outward movement is resisted not only by tie springs but also by axially-movable members controlled by additional centrifugal weights carried by the driving half 54 of the clutch so that the resistance to clutch engagement is influenced by engine speed, i.e. by throttle control, as described in Specification 711,212. Cushioning springs 56 are provided between the clutch hubs and the weight carriers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE711213X | 1949-12-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB711213A true GB711213A (en) | 1954-06-30 |
Family
ID=6620160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22617/50A Expired GB711213A (en) | 1949-12-06 | 1950-09-14 | Improved change speed gear for motor vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB711213A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2205366A (en) * | 1987-06-02 | 1988-12-07 | Ricardo Consulting Eng | Automatic gearboxes having centrifugal clutches |
WO2022100653A1 (en) * | 2020-11-13 | 2022-05-19 | 重庆宗申航空发动机制造有限公司 | Transmission system for aviation power |
WO2022100657A1 (en) * | 2020-11-13 | 2022-05-19 | 重庆宗申航空发动机制造有限公司 | Transmission system for use in aviation powering |
-
1950
- 1950-09-14 GB GB22617/50A patent/GB711213A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2205366A (en) * | 1987-06-02 | 1988-12-07 | Ricardo Consulting Eng | Automatic gearboxes having centrifugal clutches |
WO2022100653A1 (en) * | 2020-11-13 | 2022-05-19 | 重庆宗申航空发动机制造有限公司 | Transmission system for aviation power |
WO2022100657A1 (en) * | 2020-11-13 | 2022-05-19 | 重庆宗申航空发动机制造有限公司 | Transmission system for use in aviation powering |
US12044302B2 (en) | 2020-11-13 | 2024-07-23 | Chongqing Zongshen Aero Engine Mfg Co., Ltd. | Transmission system for aircraft powerplant |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1445618A (en) | Shiftable power transmission | |
US2344656A (en) | Transmission | |
US4111288A (en) | Gear changing mechanism | |
US2658405A (en) | Selective gear transmission | |
GB711213A (en) | Improved change speed gear for motor vehicles | |
US2205832A (en) | Variable speed transmission | |
US2124192A (en) | Transmission | |
GB461947A (en) | Power-transmission mechanism, especially for power-driven vehicles, comprising a turbo-transmitter and a mechanical change-speed gear | |
US2648414A (en) | Drive control mechanism | |
US2543385A (en) | Change-speed gear | |
US2239182A (en) | Automatic transmission | |
US2635478A (en) | Power transmission | |
GB711212A (en) | Automatically operating change speed gear | |
US2690680A (en) | Multiratio change speed gear | |
GB610097A (en) | Improvements in or relating to variable-speed power-transmission systems | |
US2632541A (en) | Clutch construction | |
US2179927A (en) | Power transmitting device and clutch therefor | |
GB374547A (en) | An improved automatic friction clutch | |
US2571434A (en) | Power transmission | |
GB409251A (en) | Improvements in clutches and change-speed mechanisms | |
GB486589A (en) | Improvements in or relating to variable-speed power-transmission gearing | |
US2144788A (en) | Overdrive transmission and clutch | |
US2068142A (en) | Automatic transmission | |
GB384710A (en) | Roller clutches and variable speed gear mechanisms | |
GB306788A (en) | Improvements in and connected with reversing gearing especially for motor-boat propulsion |