GB681759A - Change speed gearing - Google Patents
Change speed gearingInfo
- Publication number
- GB681759A GB681759A GB19542/50A GB1954250A GB681759A GB 681759 A GB681759 A GB 681759A GB 19542/50 A GB19542/50 A GB 19542/50A GB 1954250 A GB1954250 A GB 1954250A GB 681759 A GB681759 A GB 681759A
- Authority
- GB
- United Kingdom
- Prior art keywords
- main
- gear
- shift
- ratios
- series
- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
- F16H3/097—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts the input and output shafts being aligned on the same axis
-
- 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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0065—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising nine forward speeds
-
- 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
- F16H2702/00—Combinations of two or more transmissions
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
681,759. Change-speed gear. FULLER MANUFACTURING CO. Aug. 4, 1950 [Dec. 16, 1949], No. 19542/50. Class 80 (ii). An auxiliary gear 11 having two or more ratios which multiply a predetermined number of the ratios of a series main change-speed gear 10, e.g. on a vehicle, to provide overall two or more series of ratios, of which the lowest or highest in one series is higher or lower than the highest or lowest in another, whereby the series can be used consecutively, is controlled by a pre selector 113, Fig. 9, its shift being subsequently executed by the normal subsequent movement of the main change-speed lever, which latter moves always only in the normal shift-pattern associated with its own change-speed gear. Thus, after passing through all the ratios of the main gear, upwards or downwards, actuation of the preselector followed by return of the main shift-lever to the starting position, provides the first up, or down step of a new series, further steps of which are introduced by movement of the main shift-lever alone in the same shiftpattern as before. The main change-speed gear 10, shown, provides between its input and output shafts 15, 14, three reduced, direct, one overspeed and one reverse ratios, by dog clutches and a sliding reverse idler on an additional countershaft (Fig. 3, not shown), all controlled by a single shiftlever 22, operating through shift-rails 114-117, Fig. 9, interlocked by the usual guided balls 123 and drift-pins 121a. The auxiliary gear 11 provides between its input and a final output shafts 14, 54, direct and reduced drives controlled by a dog selector-clutch 81 with frictional synchronisers 79 such as to produce synchronism in a period (0.5 sec.) less than that normally taken in making a shift in the main gear. The reduction ratio (3.33 to 1) provided by the auxiliary gear is approximately one main gear-step greater than the engine speed range (2.58 to 1) between first and fourth speeds of the main gear. The selector clutch 81 is operated by a double-acting liquid or air pressure or vacuum cylinder 101 under control of a preselector-valve 102, connected by cable to a manual preselector 113 arranged near the main shift-lever. Pressure fluid or vacuum is supplied to the preselector valve 102 from a storage tank 108 through an executive valve 105, which is opened only when the main change-speed gear is in or near neutral, this operation being effected by the interlock drift-pin 121 of the adjacent main shift-rail 114, acting through a ball 122 and spring-loaded plunger 107. In this assembly, after starting with the auxiliary gear 11 in reduced drive and passing in the usual way through the first four ratios (not including overdrive) of the main gear 10, the preselector 113 is operated and the main shift lever moved back to its starting position; during which the auxiliary gear 11 is automatically upshifted to direct-drive and the main gear back to low, giving an overall upstep to the first of the new series, further steps, including overdrive, of which are obtained by movement, in its normal shift-pattern, of the main shaft lever only. Downshifts are similar, the preselector of the auxiliary gear being only operated at that step which changes over the series, as before. Numerical ratios are specified.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US681759XA | 1949-12-16 | 1949-12-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB681759A true GB681759A (en) | 1952-10-29 |
Family
ID=22080885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB19542/50A Expired GB681759A (en) | 1949-12-16 | 1950-08-04 | Change speed gearing |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB681759A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2486188A1 (en) * | 1980-07-03 | 1982-01-08 | Rockwell International Corp | LOCKING DEVICE FOR A GEAR CHANGE MECHANISM |
GB2165901A (en) * | 1984-10-09 | 1986-04-23 | Honda Motor Co Ltd | Vehicular transmission speed change mechanism |
DE10137356A1 (en) * | 2001-07-31 | 2003-02-13 | Zahnradfabrik Friedrichshafen | vehicle transmissions |
-
1950
- 1950-08-04 GB GB19542/50A patent/GB681759A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2486188A1 (en) * | 1980-07-03 | 1982-01-08 | Rockwell International Corp | LOCKING DEVICE FOR A GEAR CHANGE MECHANISM |
GB2165901A (en) * | 1984-10-09 | 1986-04-23 | Honda Motor Co Ltd | Vehicular transmission speed change mechanism |
US4793202A (en) * | 1984-10-09 | 1988-12-27 | Honda Giken Kogyo Kabushiki Kaisha | Vehicular transmission shift mechanism |
GB2165901B (en) * | 1984-10-09 | 1989-06-21 | Honda Motor Co Ltd | Vehicular transmission shift mechanism |
DE10137356A1 (en) * | 2001-07-31 | 2003-02-13 | Zahnradfabrik Friedrichshafen | vehicle transmissions |
US6722217B2 (en) | 2001-07-31 | 2004-04-20 | Zf Friedrichshafen Ag | Vehicle transmission |
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