GB814696A - Improvements in or relating to devices driven by a shaft at a variable speed and adapted to supply impulses uniformly spaced in time - Google Patents
Improvements in or relating to devices driven by a shaft at a variable speed and adapted to supply impulses uniformly spaced in timeInfo
- Publication number
- GB814696A GB814696A GB16227/57A GB1622757A GB814696A GB 814696 A GB814696 A GB 814696A GB 16227/57 A GB16227/57 A GB 16227/57A GB 1622757 A GB1622757 A GB 1622757A GB 814696 A GB814696 A GB 814696A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gear
- speed
- shaft
- stop
- finger
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/04—Special adaptations of driving means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Structure Of Transmissions (AREA)
- Retarders (AREA)
Abstract
814,696. Escapement mechanism ANSTALT MERCES. May 22, 1957 [Jan. 31, 1957], No. 1.6227/57. Class 80 (4). [Also in Group XIX] An escapement mechanism for obtaining uniformly timed impulses from a varying speed shaft and particularly for incorporation in a vehicle speedometer device for drawing time marks on a disc rotated at a speed proportional to that of the vehicle, comprises a varying speed driving shaft 1 with a slipping friction clutch 7, 13 for driving a gear 14. The gear 14 is coupled through a gear 15 to a first coaxial gear 25 which is coupled by a spring to a second coaxial gear 35 having a limited amount of relative rotational movement thereto. The second gear 35 is controlled by a time escapement mechanism 18, 19, 20, such as described in Specification 669,654, [Group XVIII], while the first gear 25 is controlled by a locking mechanism comprising a train of planetary gears 39-43, the first meshing with a fixed re-action gear 33 whilst the last carries a finger 44 co-operating with a stop 45 on the other gear 35. Thus in the position shown, the gear 25 is locked by the stop 45 engaging finger 44 so that the clutch 7, 13 slips. The spring coupling however is under tension and drives the time escapement which moves the gear 35 forwards until the stop 45 releases finger 44. The gear 25 is then released to be driven through clutch 7, 13 to follow up gear 35 until the finger 43 is rotated to re-engage stop 45. The spring coupling is also re-tensioned so that the operation is repeated. Thus, timed steps of gear 25 are obtained which are independent of the speed of shaft 1 provided such speed is sufficient to drive gear 25 faster than the speed at which gear 35 is controlled. The teeth of gear 25 may actuate on each movement of one tooth a spring-loaded pawl 46 which may be adapted to make time marks on a disc (not shown) driven by a pinion on the end of shaft 1 which is driven at a speed in proportion to the speed of a vehicle.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH814696X | 1957-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB814696A true GB814696A (en) | 1959-06-10 |
Family
ID=4538838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16227/57A Expired GB814696A (en) | 1957-01-31 | 1957-05-22 | Improvements in or relating to devices driven by a shaft at a variable speed and adapted to supply impulses uniformly spaced in time |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB814696A (en) |
-
1957
- 1957-05-22 GB GB16227/57A patent/GB814696A/en not_active Expired
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