GB304766A - Improvements in brake bands for change speed gear, particularly for motor vehicles - Google Patents
Improvements in brake bands for change speed gear, particularly for motor vehiclesInfo
- Publication number
- GB304766A GB304766A GB890/29A GB89029A GB304766A GB 304766 A GB304766 A GB 304766A GB 890/29 A GB890/29 A GB 890/29A GB 89029 A GB89029 A GB 89029A GB 304766 A GB304766 A GB 304766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- lubricant
- brake
- groove
- band
- 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
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/08—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees
- F16D49/10—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as an encircling band extending over approximately 360 degrees mechanically actuated
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
304,766. Pulsgetriebe Ges. Jan. 27, 1928, [Convention date]. Variable-speed epicyclic gearing. - Braking means for change speed gears of the epicyclic type particularly for motor vehicles comprises a drum having a peripheral lubricant-receiving groove and a brake band closely fitting the groove so as to imprison a film of lubricant within the groove in one direction of rotation of the drum to reduce the coefficient of friction and thus to avoid overheating, the brake band being formed with a gap which is so shapel and arranged that when the drum is rotated in the direction in which the brake is to be operated, one boundary of the gap acts as a scraper to expel lubricant from the groove and so increase the coefficient of friction. The invention is particularly applicable to change speed gears comprising planetary gears adapted to be set in operation by gear members caused to rotate by the application of bands cooperating with double armed levers or toggles which have limited freedom to slide relatively to their fulcra. The band 1 having a lining 2 fitting between peripheral tapering flanges on the drum is connected by links 3, 4 with a toggle 5 notched at 6 for sliding engagement with a fulcrum bar 7. The movements of the toggle 5 are limited by a stop 8 and a cam 9. When the drum rotates in an anticlockwise direction a very small portion of the band engages the drum at 13, 14 and imprisons the lubricant. When the drum rotates in a clockwise direction whereby effective frictional engagement is gradually established until engagement is complete, one boundary edge 12 of the gap 11<a> expels lubricant from the grooved brake drum. Admission of lubricant to the braking surfaces may be by centrifugal force and is prevented by the application of the brake band to the drum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE304766X | 1928-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB304766A true GB304766A (en) | 1929-12-05 |
Family
ID=6119435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB890/29A Expired GB304766A (en) | 1928-01-27 | 1929-01-10 | Improvements in brake bands for change speed gear, particularly for motor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB304766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165958A (en) * | 2017-06-21 | 2017-09-15 | 北京理工大学 | A kind of tooth form band brake |
-
1929
- 1929-01-10 GB GB890/29A patent/GB304766A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165958A (en) * | 2017-06-21 | 2017-09-15 | 北京理工大学 | A kind of tooth form band brake |
| CN107165958B (en) * | 2017-06-21 | 2019-10-18 | 北京理工大学 | A kind of tooth form band brake |
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