GB1205821A - Improvements relating to change speed mechanisms - Google Patents
Improvements relating to change speed mechanismsInfo
- Publication number
- GB1205821A GB1205821A GB3589768A GB3589768A GB1205821A GB 1205821 A GB1205821 A GB 1205821A GB 3589768 A GB3589768 A GB 3589768A GB 3589768 A GB3589768 A GB 3589768A GB 1205821 A GB1205821 A GB 1205821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- meter
- ratio
- gear pair
- change
- pair
- 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
- 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
- F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
- F16H63/16—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Volume Flow (AREA)
- Transmission Devices (AREA)
Abstract
1,205,821. Change-speed gears. UNITED GAS INDUSTRIES Ltd. 9 July, 1969 [26 July, 1968], No. 35897/68. Heading F2D. A two-speed toothed gear drive with no neutral position, for a variable tariff, e.g. pricing mechanism of an electricity or gas meter, comprises an integral pair of toothed wheels 5, 6 rotatably fast with but axially slidable on a hexagonal output shaft 2 into mesh with one or other of two gears 3, 4 integrally formed on an input shaft 1, the overall width of the slidable output gear pair 5, 6 being greater than the spacing between the input pinions 3, 4 whereby during ratio shift, i.e. axial sliding of the gear pair 5, 6 the gearing is locked, the new ratio being established before disengaging the existing ratio to avoid a neutral condition in which power (i.e. gas or electricity) could be consumed without the associated credit being recorded on the meter. Change of ratio is effected by manually turning in one or other direction, via a screw-driven slot 25, a helically splined shaft 18 to axially move a striker arm 12 correspondingly splined thereon and prevented from rotation by an axially extending fixed pin 19 piloted in the arm 12 at 20, the arm 12 having a forked end 15 carrying axial pins 13, 14 engaging with slight clearance each side of a disc 7 fast with the integral gear pair 5, 6 for axial gearchanging movement thereof, the pins 13, 14 being formed of or coated with a low friction material. The screw-driven slot 25 is formed at the end of shaft 18 in the face of a separate pinion 21 which meshes a quadrant marked with the relevant meter rates A or B one or other of which appears in an indication window 24 only when the appropriate gear pair 3, 5 or 4, 6 are fully meshed and the other pair completely disengaged, which condition allows a spring- loaded plunger (not shown) to engage one of two holes in a disc (not shown) ensuring correct complete movement of the sliding gear pair 5, 6 before the meter cover (not shown) can be replaced after such a gear ratio change, i.e. meter tariff change from A to B or vice-versa. The shafts, gears and various other components of the mechanism may be moulded in or constructed from synthetic plastics material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3589768A GB1205821A (en) | 1968-07-26 | 1968-07-26 | Improvements relating to change speed mechanisms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3589768A GB1205821A (en) | 1968-07-26 | 1968-07-26 | Improvements relating to change speed mechanisms |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1205821A true GB1205821A (en) | 1970-09-16 |
Family
ID=10382762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3589768A Expired GB1205821A (en) | 1968-07-26 | 1968-07-26 | Improvements relating to change speed mechanisms |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1205821A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2511107A1 (en) * | 1981-08-07 | 1983-02-11 | Cef Centre Etd Fraisage | GEAR BOX SPEED CHANGE CONTROL DEVICE |
EP1275880A2 (en) * | 2001-07-06 | 2003-01-15 | TTS Tooltechnic Systems AG & Co. KG | Gear shifting mechanism for a machine |
US9664256B2 (en) | 2012-08-01 | 2017-05-30 | Richter Helmut | Transmission which can be switched between at least three switching stages |
-
1968
- 1968-07-26 GB GB3589768A patent/GB1205821A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2511107A1 (en) * | 1981-08-07 | 1983-02-11 | Cef Centre Etd Fraisage | GEAR BOX SPEED CHANGE CONTROL DEVICE |
EP0072272A1 (en) * | 1981-08-07 | 1983-02-16 | Centre D'etudes Du Fraisage (C.E.F.) | Control mechanism for shifting change-speed gearings |
EP1275880A2 (en) * | 2001-07-06 | 2003-01-15 | TTS Tooltechnic Systems AG & Co. KG | Gear shifting mechanism for a machine |
EP1275880A3 (en) * | 2001-07-06 | 2007-12-12 | TTS Tooltechnic Systems AG & Co. KG | Gear shifting mechanism for a machine |
US9664256B2 (en) | 2012-08-01 | 2017-05-30 | Richter Helmut | Transmission which can be switched between at least three switching stages |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
PLNP | Patent lapsed through nonpayment of renewal fees |