GB1464479A - Step drive - Google Patents
Step driveInfo
- Publication number
- GB1464479A GB1464479A GB4890475A GB4890475A GB1464479A GB 1464479 A GB1464479 A GB 1464479A GB 4890475 A GB4890475 A GB 4890475A GB 4890475 A GB4890475 A GB 4890475A GB 1464479 A GB1464479 A GB 1464479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- teeth
- spring
- lever
- wheel
- 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
- F16H31/00—Other gearings with freewheeling members or other intermittently driving members
- F16H31/003—Step-by-step mechanisms for rotary motion
- F16H31/004—Step-by-step mechanisms for rotary motion with pawls driven by a rotary cam
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Basic Packing Technique (AREA)
Abstract
1464479 Ratchet mechanism EATON GmbH & Co KG 27 Nov 1975 [5 Dec 1974] 48904/75 Heading F2Q A stepped drive for a toothed wheel 1 comprises a pawl 11 which is adapted to be swung into engagement with teeth 2 on the wheel 1, effect a driving step under the influence of a spring 21, at the end of which step it is held in engagement with the teeth 2 by a fixed abutment 3 in order to prevent over-run of the wheel 1, and thereafter is swung clear of the teeth 2 again. The pawl 11 is mounted at its upper end on an eccentric 14 which is integral with a pinion 12 which is caused to rotate about an axis 13 by teeth 24 formed on one edge of an opening 23 in a stressing lever 20. A driving motor 30 drives cams 26 through gearing 29, 25 and the engagement of the cams 26 with stressing lever 20 cause the lever 20 to pivot about a shaft 4, carrying toothed wheel 1, thereby stressing the spring 21 until the cams 26 release the lever 20 whereupon the stressing lever 20 moves clockwise under the influence of the spring 21 causing clock-wise rotation of pinion 12 and a driving step of pawl 11. Between the eccentric 14 and the pawl 11 there is a friction coupling which may comprise a spring-pressed ball, Fig. 2, or a resilient detent finger 19, Fig. 3. When the pawl 11 is clear of the teeth 2, the wheel 1 may be rotated by hand in the direction of the arrow 6, rotation in the opposite direction being prevented by a spring-pressed pawl 7.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742457587 DE2457587C2 (en) | 1974-12-05 | 1974-12-05 | STEPPING DRIVE |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1464479A true GB1464479A (en) | 1977-02-16 |
Family
ID=5932623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4890475A Expired GB1464479A (en) | 1974-12-05 | 1975-11-27 | Step drive |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5182868A (en) |
AU (1) | AU501341B2 (en) |
DE (1) | DE2457587C2 (en) |
ES (1) | ES443192A1 (en) |
FR (1) | FR2293641A1 (en) |
GB (1) | GB1464479A (en) |
IT (1) | IT1051831B (en) |
SE (1) | SE409352B (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR989820A (en) * | 1949-04-30 | 1951-09-13 | Gear reduction mechanism | |
DE1230638B (en) * | 1964-03-07 | 1966-12-15 | Secura Werke Veb | Bolt lock |
DE1954023B2 (en) * | 1969-10-27 | 1971-04-01 | Holzer Patent Ag | STEP CONTROL UNIT |
JPS48103964A (en) * | 1972-04-13 | 1973-12-26 |
-
1974
- 1974-12-05 DE DE19742457587 patent/DE2457587C2/en not_active Expired
-
1975
- 1975-11-19 SE SE7512990A patent/SE409352B/en unknown
- 1975-11-27 GB GB4890475A patent/GB1464479A/en not_active Expired
- 1975-12-03 FR FR7536997A patent/FR2293641A1/en not_active Withdrawn
- 1975-12-03 IT IT29977/75A patent/IT1051831B/en active
- 1975-12-04 ES ES443192A patent/ES443192A1/en not_active Expired
- 1975-12-05 AU AU87307/75A patent/AU501341B2/en not_active Expired
- 1975-12-05 JP JP50145846A patent/JPS5182868A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2457587B1 (en) | 1976-02-05 |
AU8730775A (en) | 1977-06-09 |
IT1051831B (en) | 1981-05-20 |
JPS5182868A (en) | 1976-07-20 |
AU501341B2 (en) | 1979-06-14 |
SE7512990L (en) | 1976-06-08 |
DE2457587C2 (en) | 1976-09-09 |
SE409352B (en) | 1979-08-13 |
FR2293641A1 (en) | 1976-07-02 |
ES443192A1 (en) | 1977-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |