GB1369922A - Timing mechanism - Google Patents
Timing mechanismInfo
- Publication number
- GB1369922A GB1369922A GB4229272*A GB4229272A GB1369922A GB 1369922 A GB1369922 A GB 1369922A GB 4229272 A GB4229272 A GB 4229272A GB 1369922 A GB1369922 A GB 1369922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- cam
- clutch
- spring
- april
- 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
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
- G04F3/06—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with electric driving mechanisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Predetermined Time Intervals (AREA)
Abstract
1369922 Time switches MALLORY TIMERS Ltd 24 April 1972 [23 April 1971] 42292/72 Divided out of 1369921 Heading H1N A timer comprises drive means 111 coupled to a shaft 113 by clutch means 150, cam means 129 carried by said shaft 113 so as to rotate therewith, a housing 114 substantially surrounding said shaft and cam means, and electrical switch means 118, 119, responsive to the cam means 129; said clutch comprising a coil spring 152 in frictional engagement with a member of said drive means for rotation thereby and having a distal end 154 rotationally keyed to said shaft 113 or said cam means 129. As shown the end 154 of spring 152 is a loose fit in a slot 156 in the hub of cam 129 and also passes through a hole 160 in shaft 113. A synchronous motor 109 drives a gear 107 loose on shaft 113 but, by the unidirectional clutch formed by the friction grip of spring 152 on its hub 107<SP>1</SP>, drives the shaft and hence cam 129. The clutch allows shaft 113 and cam 129 to be advanced to a desired starting position by a knob (133, Fig. 2, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13677371A | 1971-04-23 | 1971-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1369922A true GB1369922A (en) | 1974-10-09 |
Family
ID=22474298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4229272*A Expired GB1369922A (en) | 1971-04-23 | 1972-04-24 | Timing mechanism |
Country Status (3)
Country | Link |
---|---|
US (1) | US3700838A (en) |
CA (1) | CA953760A (en) |
GB (1) | GB1369922A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4246454A (en) * | 1978-12-11 | 1981-01-20 | Emhart Industries, Inc. | Timing mechanism having a short pulse prior to its overall program |
US4381431A (en) * | 1981-04-24 | 1983-04-26 | Gulf & Western Manufacturing Company | Hand set timer |
US5159511A (en) * | 1987-04-01 | 1992-10-27 | Digital Equipment Corporation | Biasing conductor for MR head |
US8313043B1 (en) * | 2007-01-19 | 2012-11-20 | Hunter Industries, Inc. | Friction clutch for rotor-type sprinkler |
US10029265B2 (en) * | 2014-12-23 | 2018-07-24 | Hunter Industries, Inc. | Reversing mechanism for irrigation sprinkler with disengaging gears |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753406A (en) * | 1954-02-17 | 1956-07-03 | Gen Electric | Electric switch mechanism |
US2963628A (en) * | 1957-05-08 | 1960-12-06 | Ncr Co | Switching sequencer |
US3111822A (en) * | 1961-04-12 | 1963-11-26 | Quinten A Hansen | Controlled torque, self-energizing wrap spring clutch or brake |
US3157258A (en) * | 1961-06-16 | 1964-11-17 | Vincent G Dreesman | Torque limiting coupling and positive clutch mechanism |
US3213645A (en) * | 1963-09-03 | 1965-10-26 | Xerox Corp | Torque limiting mechanism |
US3221117A (en) * | 1963-09-09 | 1965-11-30 | Mallory & Co Inc P R | Adjustable cam time sequence control |
-
1971
- 1971-04-23 US US136773A patent/US3700838A/en not_active Expired - Lifetime
-
1972
- 1972-04-21 CA CA140,274A patent/CA953760A/en not_active Expired
- 1972-04-24 GB GB4229272*A patent/GB1369922A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3700838A (en) | 1972-10-24 |
CA953760A (en) | 1974-08-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLE | Entries relating assignments, transmissions, licences in the register of patents |