GB1218317A - Improvements in ratchet and pawl timing gear - Google Patents
Improvements in ratchet and pawl timing gearInfo
- Publication number
- GB1218317A GB1218317A GB4428769A GB4428769A GB1218317A GB 1218317 A GB1218317 A GB 1218317A GB 4428769 A GB4428769 A GB 4428769A GB 4428769 A GB4428769 A GB 4428769A GB 1218317 A GB1218317 A GB 1218317A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- ratchet
- shaft
- ratchet teeth
- pawls
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
- H01H43/10—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to a part rotating at substantially constant speed
- H01H43/101—Driving mechanisms
- H01H43/102—Driving mechanisms using a pawl and ratchet wheel mechanism
Landscapes
- Transmission Devices (AREA)
Abstract
1,218,317. Ratchet mechanism. HOLZER PATENT A.G. 8 Sept., 1969 [12 Sept., 1968], No. 44287/69. Heading F2Q. A control cam disc 2 of a timing switch gear is driven by two pawls 22, 23 engaging two sets of ratchet teeth 5, 6, the ratchet teeth 5 being of even and relatively small pitch, for rotating the disc forward at equal intervals of time, and the ratchet teeth 6 being spaced apart in accordance with the lengths of time intervals between the individual switchings. The pawls 22, 23 are actuated by eccentrics 13, 14 mounted on a shaft 25 driven from a motor 1 through reduction gearing 17, 18, 19. A locking pawl 31 acts on teeth 5 to prevent back-running. In a modification shown in Fig. 4, pawl 23 has a slot 26 through which shaft 25 passes, and a follower 28 on pawl 23 is urged into engagement with a cam 27 on the shaft 25 by a spring 29.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681775706 DE1775706B1 (en) | 1968-09-12 | 1968-09-12 | PROGRAM-CONTROLLED STEP CONTROL UNIT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1218317A true GB1218317A (en) | 1971-01-06 |
Family
ID=5702680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4428769A Expired GB1218317A (en) | 1968-09-12 | 1969-09-08 | Improvements in ratchet and pawl timing gear |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1775706B1 (en) |
| FR (1) | FR2017936A1 (en) |
| GB (1) | GB1218317A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467664A (en) * | 1981-09-28 | 1984-08-28 | The Singer Company | Timer drive mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD21753A (en) * | ||||
| GB545992A (en) * | 1939-07-25 | 1942-06-23 | Philco Radio & Television Corp | Ratchet operated step-by-step mechanism |
| DE869282C (en) * | 1942-11-18 | 1953-03-02 | Sodeco Compteurs De Geneve | Mechanism for transferring motion between two spindles, the first of which receives successive series of rotary motions |
| DE841904C (en) * | 1951-01-25 | 1952-06-19 | Seibt & Kapp Gmbh Maschf | Device for the gradual rotation of the control shaft for the automatic control of the operating elements of a washing machine, in particular a series washing machine |
| DE1131309B (en) * | 1956-03-08 | 1962-06-14 | Metzenauer & Jung G M B H | Program switching mechanism with stepping drive |
-
1968
- 1968-09-12 DE DE19681775706 patent/DE1775706B1/en active Pending
-
1969
- 1969-09-08 GB GB4428769A patent/GB1218317A/en not_active Expired
- 1969-09-11 FR FR6931688A patent/FR2017936A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2017936A1 (en) | 1970-05-22 |
| DE1775706B1 (en) | 1972-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6412165A (en) | Latchet type tensioner with backlash | |
| GB1436902A (en) | Printing apparatus | |
| AU562331B2 (en) | Tensioning device | |
| ES8401551A1 (en) | Timer drive mechanism. | |
| GB1218317A (en) | Improvements in ratchet and pawl timing gear | |
| GB1068470A (en) | Calendar mechanism for a watch | |
| GB1103685A (en) | Improvements in and relating to programme timers | |
| GB976583A (en) | Pawl and ratchet mechanisms | |
| GB1135818A (en) | Improvements in or relating to free wheel mechanisms | |
| ES481562A1 (en) | Positive stop gearchange mechanism for motorcycle - has lever pawl with facing teeth to engage pins of star wheel for movement either way | |
| GB1455858A (en) | Digital display indicator | |
| GB1259102A (en) | ||
| GB1303713A (en) | ||
| GB1528422A (en) | Gear mechanism | |
| GB1235639A (en) | Intermittent-advance mechanism | |
| GB793920A (en) | Improvements in or relating to freewheel coupling mechanisms | |
| GB1081107A (en) | Improvements in or relating to pawl mechanisms | |
| GB1248026A (en) | Rotary stepping device | |
| GB1083800A (en) | Time sequence switch | |
| GB1291039A (en) | Numerical counter | |
| GB1326291A (en) | Push button assemblies | |
| GB1462402A (en) | Time switch | |
| GB1085061A (en) | Bi-directional stepping mechanism | |
| ES8609764A1 (en) | Programmer control device | |
| FR2305815A2 (en) | Date and time shutter type display - has modified cam which ensures fast shutter changes from 59-00 |