GB823807A - Improvements in or relating to internal shoe-drum brakes - Google Patents

Improvements in or relating to internal shoe-drum brakes

Info

Publication number
GB823807A
GB823807A GB38370/56A GB3837056A GB823807A GB 823807 A GB823807 A GB 823807A GB 38370/56 A GB38370/56 A GB 38370/56A GB 3837056 A GB3837056 A GB 3837056A GB 823807 A GB823807 A GB 823807A
Authority
GB
United Kingdom
Prior art keywords
shoe
plate
brake
shoes
crank throw
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
GB38370/56A
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.)
Rockwell Spring and Axle Co
Original Assignee
Rockwell Spring and Axle Co
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 Rockwell Spring and Axle Co filed Critical Rockwell Spring and Axle Co
Publication of GB823807A publication Critical patent/GB823807A/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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
    • F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
    • F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
    • F16D51/24—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
    • 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
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/58—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with eccentric or helical body
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D2051/001—Parts or details of drum brakes
    • F16D2051/003—Brake supports

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

823,807. Internal shoe-drum brakes. ROCKWELL SPRING & AXLE CO. Dec. 17, 1956 [Jan. 13, 1956], No. 38370/56. Class 103 (1). In an internal shoe-drum brake having floating shoes 14 slidably abutting at one end an abutment face 48 and expanded by a fluid-pressure responsive actuator 16 interposed between the opposite ends of the brake shoes, automatic adjustment means in the form of a crank throw member 80, fitted on the back plate 18 and associated with each shoe, is provided with a pin 78 projecting through and of smaller diameter than a slot 76 provided in each shoe; friction means being provided for retaining the crank throw member 80 in a fixed position during brake-shoe return movement and for permitting re-positioning of the same during brake actuating movement to maintain a constant brake shoe stroke throughout the life of the brake linings established by the difference in the width of slot 76 and the diameter of the pin 78. The friction means provided for retaining crank throw member 80 in frictional contact with the back-plate 18 is shown in Fig. 3 and includes a pin 84 received in a free fit through an opening 86 in the back-plate 18 and riveted at 88 to hold washer 90 in place against a Belleville spring washer which is resiliently compressed between washer 90 and back-plate 18 to resiliently bias friction surface 94 of crank throw member 80 into frictional engagement with back-plate 18 to frictionally retain member 80 in its set position. Slot 76 in the web of each shoe is also elongated from end 100 to end 102 to allow for gradual floating shift of each shoe 14 as the lining 11 wears. Each shoe web 56 is formed with a projection 64 offset toward the back-plate 18 so that the line of action of return spring 62 is off-centred towards the back-plate relative to the centre plane of the shoes so that the shoes are biased into varying contact with back-plate 18 to dampen shoe vibration.
GB38370/56A 1956-01-13 1956-12-17 Improvements in or relating to internal shoe-drum brakes Expired GB823807A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US823807XA 1956-01-13 1956-01-13

Publications (1)

Publication Number Publication Date
GB823807A true GB823807A (en) 1959-11-18

Family

ID=22170832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38370/56A Expired GB823807A (en) 1956-01-13 1956-12-17 Improvements in or relating to internal shoe-drum brakes

Country Status (1)

Country Link
GB (1) GB823807A (en)

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