GB551726A - Improvements in or relating to brakes - Google Patents

Improvements in or relating to brakes

Info

Publication number
GB551726A
GB551726A GB12888/41A GB1288841A GB551726A GB 551726 A GB551726 A GB 551726A GB 12888/41 A GB12888/41 A GB 12888/41A GB 1288841 A GB1288841 A GB 1288841A GB 551726 A GB551726 A GB 551726A
Authority
GB
United Kingdom
Prior art keywords
pawl
brake
shoe
shoes
pin
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
GB12888/41A
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Publication of GB551726A publication Critical patent/GB551726A/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
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/42—Slack adjusters mechanical non-automatic
    • F16D65/46—Slack adjusters mechanical non-automatic with screw-thread and nut

Landscapes

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

Abstract

551,726. Brakes. BENDIX AVIATION CORPORATION. Oct. 6, 1941, No. 12888. Convention date, June 5, 1940. [Class 103 (i)] Automatic adjusting means for brake shoes is adapted to be rendered ineffective when the shoe lining has been worn to a predetermined extent. A stop device may also be provided to prevent application of the shoes to the drum after the adjusting means have been rendered ineffective. The adjusting means may also be rendered ineffective by heating of the brake. A self-energising brake is shown in which the shoes 11, 12 anchor on a stop 14 and are connected by a device comprising a part 18 in which screws a part 16 engaging shoe 11 and which is socketed in a part 22 engaging shoe 12. A pawl 25 pivoted at 24 on the part 22 has a tooth 26 for engaging a ratchet wheel 19 on the part 18 and carries a thermo-sensitive bi-metallic arm 29 engaged by a pin 31 on a link 32 connected to a bell-crank 34 pivoted at 35 on the shoe 11. The bell-crank is connected also by link 36 to the anchor 14. Upon application of the brake by the hydraulic cylinder 15, the pawl is turned by the upward movement of the link 32 and if due to wear of the shoe linings the movement is sufficient the tooth 26 slips a tooth of the ratchet wheel. During the release movement the pawl is returned by a spring 28 and by engagement of the pin 31 in a slot in the pawl. Heating of the brake causes the end of the arm 29 to leave the pin 31 thus preventing adjustment since the pin 31 has lost motion in the slot in the pawl. The adjusting means are also rendered ineffective when the linings have worn down to a predetermined extent by the engagement of a cam 39 on the part 16 with a projection 40 on the arm 29 whereby the pawl is moved away from the ratchet 19. To prevent the shoes from being forced into contact with the drum when the linings have been worn down the piston rods or links of the cylinder 15 are provided with a projection for engagement with a stop fixed to the back plate 13.
GB12888/41A 1940-06-05 1941-10-06 Improvements in or relating to brakes Expired GB551726A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US551726XA 1940-06-05 1940-06-05

Publications (1)

Publication Number Publication Date
GB551726A true GB551726A (en) 1943-03-08

Family

ID=21996107

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12888/41A Expired GB551726A (en) 1940-06-05 1941-10-06 Improvements in or relating to brakes

Country Status (1)

Country Link
GB (1) GB551726A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294243B (en) * 1965-12-14 1969-04-30 Teves Gmbh Alfred Self-adjusting adjustment and centering device, especially for motor vehicles
GB2210121A (en) * 1987-09-21 1989-06-01 Automotive Products Plc Automatic adjuster for drum brakes
GB2210422A (en) * 1985-08-08 1989-06-07 Kelsey Hayes Co Improvements in and relating to drum brake adjusters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294243B (en) * 1965-12-14 1969-04-30 Teves Gmbh Alfred Self-adjusting adjustment and centering device, especially for motor vehicles
GB2210422A (en) * 1985-08-08 1989-06-07 Kelsey Hayes Co Improvements in and relating to drum brake adjusters
GB2210121A (en) * 1987-09-21 1989-06-01 Automotive Products Plc Automatic adjuster for drum brakes
GB2210121B (en) * 1987-09-21 1991-10-16 Automotive Products Plc Drum brakes

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