GB753598A - Improvements in or relating to transmission systems - Google Patents
Improvements in or relating to transmission systemsInfo
- Publication number
- GB753598A GB753598A GB3437653A GB3437653A GB753598A GB 753598 A GB753598 A GB 753598A GB 3437653 A GB3437653 A GB 3437653A GB 3437653 A GB3437653 A GB 3437653A GB 753598 A GB753598 A GB 753598A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clutch
- switch
- speed
- energizes
- energized
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D37/02—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive the particles being magnetisable
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/04—Ratio selector apparatus
- F16H59/044—Ratio selector apparatus consisting of electrical switches or sensors
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/001—Electric arrangements for clutch control
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D37/00—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive
- F16D2037/004—Clutches in which the drive is transmitted through a medium consisting of small particles, e.g. centrifugally speed-responsive characterised by multiple substantially axial gaps in which the fluid or medium consisting of small particles is arranged
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
- F16H2063/305—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force using electromagnetic solenoids
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
753,598. Change-speedgearing. SMITH & SONS (ENGLAND), Ltd., S. Dec. 3, 1954 [Dec. 10, 1953], No. 34376/53. Class 80(2) Gearing for motor vehicles giv ing automatic changes between three ratios from the engine flywheel 5 to the output shaft 14 comprises a first slippable clutch 13 giving direct drive and a second slippable clutch 16 giving alternatively low-speed drive through a one-way clutch 25 on intermediate-speed drive on engagement of a dog clutch 33 provided with balking means preventing engagement except at synchronism, the automatic control means being such that, when operating to change from low to intermediate speed, clutch 13 is simultaneously fully engaged, and clutch 16 partially disengaged, so as to produce synchronism of the dog clutch parts without interruption of power flow to shaft 14, and clutch 13 is disengaged and clutch 16 again fully engaged only when the dog clutch 33 has engaged. As shown in Fig. 1, clutches 13, 16 are of magnetic-powder type with energizing windings 8, 9, and the gearing also provides emergencylow and reverse speeds. Clutch 13 drives shaft 14 direct and clutch 16 drives a hollow shaft 17 geared at 18, 19 to a lay-shaft gear cluster 29, 21, 36. Gears 29, 21 mesh with gears 30, 22 loose on shaft 14, gear 30 being connectable through the dog clutch 33, with balking ring 32, to shaft 14 while gear 22 is connected through one-way clutch 25 to a member 26 which is free on shaft 14 but which is normally connected, for forward drive, by clutch teeth to a gear 27 splined on shaft 14 and controlled by a manual yoke 35. As shown, gear 27 occupies a neutral position. If moved left it is clutched to member 26, while if moved right to mesh with gear 36 it provides emergency-low speed (with clutch 16 engaged) and if moved further right it meshes with a gear 37 driven from gear 36 to give reverse drive (with clutch 16 engaged). Engagement of dog clutch 33 is effected by energization of a spring-loaded solenoid 70, Fig. 5, the movement of which also controls a change-over switch GS1. The electric circuit, Fig. 5, includes various relays A, B... which operate switches A1, B1..., battery 86, engine-driven dynamo 77, voltage regulator 79, ignition switch 87, governor switch 95 responsive both to vehicle speed and throttle position, switch TS1 which opens on opening of throttle, switch N which is closed only in neutral, and switch RN which is opened only in reverse emergency-low or neutral. With the vehicle at rest with engine idling (switch 87 closed) and yoke 35 positioned for normal forward drive (switch RN closed), relays X, Y, A, G are energized, thus switch A1 is open, isolating the clutch windings 8, 9. On opening the throttle, TS1 opens, A de-energizes, A1 is closed and winding 9 is energized from dynamo 77 to engage clutch 16 and give free-wheel low-speed drive, while winding 8 is energized through resistance 90 sufficiently to counteract leakage flux from 9 so that clutch 13 is inoperative. When vehicle speed and throttle position are such as to require change to intermediate speed, contacts 94, 96 of switch 95 separate, X, G de-energize and C energizes. Thus, A1 is now connected to battery 86, either direct via switch 89 which opens at predetermined engine suction, or through resistance 88. Solenoid 70 energizes via C1 tending to engage 33, and B energizes. Thus, winding 8 energizes to fully engage clutch 13 and winding 8 is de-energized, though clutch 16 remains partially engaged due to leakage from 8. The dog-clutch parts quickly reach synchronism, whereupon 33 engages, GS1 changes over, de-energizing D, B. Thus, 9 is now energized to fully engage 16, giving intermediate speed, while 8 is partially engaged via resistance 90 to counteract leakage from 9 so that clutch 13 is inoperative. When speed and throttle are such as to require change to top speed, contacts 94, 97 of switch 95 engage, de-energizing Y. Thus B energizes, 8 energizes to engage clutch 13, giving direct drive, while 9 is partially energized via resistance 93 to counteract leakage from 8. During change down from intermediate to low speed, i.e. when 94 again contacts 96, X energizes, C and 70 de-energizes, A energizes and A1 opens, so that 13, 16 are both disengaged to allow easy disengagement of 33. Closure of either a manual switch LO or a switch KD operated by kick-down of accelerator, provided a switch 100, which opens only at high vehicle speed, is closed, causes relay E to be energized, de-energizing B and energizing C so that intermedi- . ate-speed is engaged and remains engaged so long as E is energized. A switch TS2 opens at small throttle openings to reduce excitation of winding 8.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3437653A GB753598A (en) | 1953-12-10 | 1953-12-10 | Improvements in or relating to transmission systems |
FR1117499D FR1117499A (en) | 1953-12-10 | 1954-12-09 | Power transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3437653A GB753598A (en) | 1953-12-10 | 1953-12-10 | Improvements in or relating to transmission systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB753598A true GB753598A (en) | 1956-07-25 |
Family
ID=10364878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3437653A Expired GB753598A (en) | 1953-12-10 | 1953-12-10 | Improvements in or relating to transmission systems |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1117499A (en) |
GB (1) | GB753598A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022243469A1 (en) * | 2021-05-19 | 2022-11-24 | Technische Universität Darmstadt | Gear shift mechanism having an immersion coil actuator |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1240160B (en) * | 1990-03-30 | 1993-11-27 | Giovanni Nicodano | COMMAND DEVICE FOR A VEHICLE SPEED CHANGE |
-
1953
- 1953-12-10 GB GB3437653A patent/GB753598A/en not_active Expired
-
1954
- 1954-12-09 FR FR1117499D patent/FR1117499A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022243469A1 (en) * | 2021-05-19 | 2022-11-24 | Technische Universität Darmstadt | Gear shift mechanism having an immersion coil actuator |
Also Published As
Publication number | Publication date |
---|---|
FR1117499A (en) | 1956-05-23 |
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