GB638960A - New or improved brake-shoe operating mechanism - Google Patents

New or improved brake-shoe operating mechanism

Info

Publication number
GB638960A
GB638960A GB1181448A GB1181448A GB638960A GB 638960 A GB638960 A GB 638960A GB 1181448 A GB1181448 A GB 1181448A GB 1181448 A GB1181448 A GB 1181448A GB 638960 A GB638960 A GB 638960A
Authority
GB
United Kingdom
Prior art keywords
tappets
drum
pair
blocks
racks
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
GB1181448A
Inventor
Frank George Freeman
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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Priority to GB1181448A priority Critical patent/GB638960A/en
Publication of GB638960A publication Critical patent/GB638960A/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum brakes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/20—Friction clutches with clutching members co-operating with both the periphery and the inner surface of a drum or wheel-rim
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/60—Cables or chains, e.g. Bowden cables
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/66—Wedges
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
    • G05G2700/12—Control mechanisms with one controlling member and one controlled member
    • G05G2700/16—Mechanisms for conveying motion or signals for or in relation with control mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Braking Arrangements (AREA)

Abstract

638,960. Internal shoe-drum brake actuators. GIRLING, Ltd. April 29, 1948, No. 11814. [Class 103 (i)] In an internal shoe-drum brake, the actuator mechanism comprises a pair of opposed slidable guided tappets 12, 13 which are formed with toothed racks 16 adapted to be engaged by complementary racks 23 on a pair of spaced blocks 22, which on actuation of a member 17 at right angles to the brake back-plate are first brought into engagement with the tappets and are then urged apart to move the shoes outwardly into engagement with the drum. As shown, the blocks 22 are coupled to the actuator rod by a pair of inclined toggle links 20. The links 20 may, however, be replaced by a single cranked plate spring member and the mechanism is also shown modified for use with the well-known ball or roller and inclined rod type of actuator. The engaging teeth of the racks 16 and 23 are of ratchet form so that the tappets 12, 13 may slide under the blocks 22 during the releasing movement. The invention is particularly applicable to brakes of the type described in Specification 519,787 in which the shoes are in light rubbing contact with the drum during release.
GB1181448A 1948-04-29 1948-04-29 New or improved brake-shoe operating mechanism Expired GB638960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1181448A GB638960A (en) 1948-04-29 1948-04-29 New or improved brake-shoe operating mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1181448A GB638960A (en) 1948-04-29 1948-04-29 New or improved brake-shoe operating mechanism

Publications (1)

Publication Number Publication Date
GB638960A true GB638960A (en) 1950-06-21

Family

ID=9993177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1181448A Expired GB638960A (en) 1948-04-29 1948-04-29 New or improved brake-shoe operating mechanism

Country Status (1)

Country Link
GB (1) GB638960A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838139A (en) * 1953-08-19 1958-06-10 Rosiers John B Des Self-energizing brake
US3762511A (en) * 1970-01-30 1973-10-02 Girling Ltd Mechanical couplings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838139A (en) * 1953-08-19 1958-06-10 Rosiers John B Des Self-energizing brake
US3762511A (en) * 1970-01-30 1973-10-02 Girling Ltd Mechanical couplings

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