GB1369922A - Timing mechanism - Google Patents

Timing mechanism

Info

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
Application number
GB4229272*A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MALLORY TIMERS Ltd
Original Assignee
MALLORY TIMERS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MALLORY TIMERS Ltd filed Critical MALLORY TIMERS Ltd
Publication of GB1369922A publication Critical patent/GB1369922A/en
Expired legal-status Critical Current

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).
GB4229272*A 1971-04-23 1972-04-24 Timing mechanism Expired GB1369922A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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