GB679126A - Improvements in or relating to power operated friction drum brakes - Google Patents

Improvements in or relating to power operated friction drum brakes

Info

Publication number
GB679126A
GB679126A GB1914149A GB1914149A GB679126A GB 679126 A GB679126 A GB 679126A GB 1914149 A GB1914149 A GB 1914149A GB 1914149 A GB1914149 A GB 1914149A GB 679126 A GB679126 A GB 679126A
Authority
GB
United Kingdom
Prior art keywords
link
power unit
lever
weight
applying
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
GB1914149A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1914149A priority Critical patent/GB679126A/en
Publication of GB679126A publication Critical patent/GB679126A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16Brakes with two brake-blocks

Landscapes

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

Abstract

679,126. External drum brakes. ELLISTON, E. R. Oct. 20, 1950 [July 20, 1949], No. 19141/49. Class 103 (i). In an external drum brake of the type in which the shoes 3 are normally applied to the drum 2 by a weight and released by a power unit such as an electromagnet or a pneumatic or hydraulic thruster 19, the entire power unit 19 is arranged to form part at least of the applying weight. As shown in Fig. 1, the brake is in the applied condition, and the weight of the power unit 19, which in this case forms the entire applying weight, acts through the lever 16 pivoted at 17 to the frame 7, the link 12, spring 14, bell-crank 8, 8a, 8b, pivoted at 9 to shoe-applying lever 6, and the link 10 adjustably secured to the shoe-applying lever 5. When the power unit 19 is energized to release the brake, the rod 20 is moved upwards and acts through link 23 to pivot the lever 16 in an anti-clockwise sense about the fulcrum 17 so that the linkage takes up the disposition shown in Fig. 4. In a modification, the top end of the link 12 may be pivoted to the free arm 8b of the bell-crank 8 at any one of a number of spaced points, thus providing a variable leverage.
GB1914149A 1949-07-20 1949-07-20 Improvements in or relating to power operated friction drum brakes Expired GB679126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1914149A GB679126A (en) 1949-07-20 1949-07-20 Improvements in or relating to power operated friction drum brakes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1914149A GB679126A (en) 1949-07-20 1949-07-20 Improvements in or relating to power operated friction drum brakes

Publications (1)

Publication Number Publication Date
GB679126A true GB679126A (en) 1952-09-10

Family

ID=10124430

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1914149A Expired GB679126A (en) 1949-07-20 1949-07-20 Improvements in or relating to power operated friction drum brakes

Country Status (1)

Country Link
GB (1) GB679126A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249365B (en) * 1990-10-31 1994-09-28 Davies & Metcalfe Improvements in or relating to brake mechanisms
US5957248A (en) * 1995-02-22 1999-09-28 Power Transmission Technology, Inc. Caliper disk brake for steel mill cranes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249365B (en) * 1990-10-31 1994-09-28 Davies & Metcalfe Improvements in or relating to brake mechanisms
US5957248A (en) * 1995-02-22 1999-09-28 Power Transmission Technology, Inc. Caliper disk brake for steel mill cranes

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