GB1130384A - Ratchet drive mechanism - Google Patents

Ratchet drive mechanism

Info

Publication number
GB1130384A
GB1130384A GB49625/66A GB4962566A GB1130384A GB 1130384 A GB1130384 A GB 1130384A GB 49625/66 A GB49625/66 A GB 49625/66A GB 4962566 A GB4962566 A GB 4962566A GB 1130384 A GB1130384 A GB 1130384A
Authority
GB
United Kingdom
Prior art keywords
cam
motor
drive
solenoid
shaft
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
GB49625/66A
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 GB1130384A publication Critical patent/GB1130384A/en
Expired legal-status Critical Current

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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1553—Lever actuator
    • Y10T74/1555—Rotary driven element

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

1,130,384. Ratchet gearing. MALLORY TIMERS Ltd. 4 Nov., 1966 [16 Dec., 1965], No.4962.3/66. Heading F2Q. In a drive mechanism for a timer having cams 27 on a shaft 26 controlling electrical switches (not shown), a ratchet wheel 25, secured to the shaft 26 and advanced by a tang 23 on a drive member 20 pivotally and slidably mounted on a narrow portion 38 of the shaft 26 by means of a slot 37, is driven at one speed with snap action advancement to drive the cams during a programmed timing cycle, and at a higher speed for rapid advance to or through a particular cycle. For the snap action drive, a motor 11 drives a cam 16, through gears 14, 15, to act on a roller follower 22 on the member 20. The cam moves the member 20 against the force of a spring 18, and then releases it for a rapid driving stroke under the power of the spring 18. For the rapid drive, a motor 34 drives a cam 29 through gears 30-33 to rock the member 20. In an alternative arrangement (Figs. 4, 5, not shown) the second motor 34 and cam 29 are replaced by a solenoid (39) acting on an armature (43) mounted on the member (20). A saw-tooth cam (41) on the shaft of the motor (11) acts on a switch (42) to cyclically energize and de-energize the solenoid (43) to rock the member (20). Instead of the cam (41) and switch (42), an electronic pulsing device may be used to energize the solenoid (39). One of the cams 27 is included in the control of motor 34 or solenoid (39).
GB49625/66A 1965-12-16 1966-11-04 Ratchet drive mechanism Expired GB1130384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US514196A US3368415A (en) 1965-12-16 1965-12-16 Drive mechanism for a timer

Publications (1)

Publication Number Publication Date
GB1130384A true GB1130384A (en) 1968-10-16

Family

ID=24046186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49625/66A Expired GB1130384A (en) 1965-12-16 1966-11-04 Ratchet drive mechanism

Country Status (2)

Country Link
US (1) US3368415A (en)
GB (1) GB1130384A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588338A (en) * 1984-03-01 1986-05-13 Brems John Henry Follower mechanism and control for rotary metal removing tools

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895340A (en) * 1956-04-30 1959-07-21 American Nat Bank And Trust Co Stepper with built-in latch
US2868026A (en) * 1957-08-22 1959-01-13 Mallory & Co Inc P R Intermittent driving mechanism
US3115785A (en) * 1960-10-18 1963-12-31 Mallory Timers Company Intermittent driving device for a timer mechanism
US3151490A (en) * 1962-02-26 1964-10-06 Zenith Radio Corp Ratchet relays

Also Published As

Publication number Publication date
US3368415A (en) 1968-02-13

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