GB544053A - Improvements in automatic double acting slack adjusters for brakes - Google Patents
Improvements in automatic double acting slack adjusters for brakesInfo
- Publication number
- GB544053A GB544053A GB14667/40A GB1466740A GB544053A GB 544053 A GB544053 A GB 544053A GB 14667/40 A GB14667/40 A GB 14667/40A GB 1466740 A GB1466740 A GB 1466740A GB 544053 A GB544053 A GB 544053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- spring
- abutment
- brake
- parts
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H15/00—Wear-compensating mechanisms, e.g. slack adjusters
- B61H15/0035—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in both directions
- B61H15/0042—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in both directions by means of linear adjustment
- B61H15/0057—Wear-compensating mechanisms, e.g. slack adjusters mechanical and self-acting in both directions by means of linear adjustment with screw-thread and nut
-
- 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
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
544,053. Brake transmitting mechanism. SVENSKA AKTIEBOLAGET BROMSREGULATOR. Sept. 27, 1940, No. 14667. Convention date, Aug. 14, 1939. [Class 103 (i)] In slack adjusters of the kind adapted both to increase and to reduce slack and comprising a two-part brake-rod and a control member movable axially on the rod by an operating member against the action of a spring at a brake application to permit engagement of a member that couples the rod-parts the control member being returned by the spring at brake release for disengaging the coupling member, the spring acts on the control member through a separate support when this support is operated by the operating member so that normally and in the event of failure of the operating means during a brake operation the spring is ineffective in the control member and engagement of the coupling member is thus permitted to prevent slack increase. The adjuster shown is such as described in Specification 530,658 and comprises a brake-rod the parts 1, 2 of which are adapted to be coupled by a nut 3 engaging a quick-pitch thread on the part 1, an adjusting nut 4 being also provided. A control member 5 is movable axially against the action of a spring 7 during brake application by an operating rod 6. The spring 7 bears on a support 9 slidable on the rod 1 and which normally as shown abuts on a sleeve 10 secured to the rod 1 so that the spring does not act on the member 5. The nut 3 can thus bear on the abutment 17 of the rod 1 to lock the rods 1, 2 against relative slack increasing movement. In Fig. 1 a lever I is pivoted at 12 to support 9 and is linked at 15 to the member 5. Initial movement of the rod 6 relatively to the rod 1, 2 at a brake application operates the lever 11 to cause movement of the abutment 17 away from the nut 3 thus permitting relative slack-increasing movement of the rod-parts 1, 2, the abutment 16 on member 5 engaging the abutment 17. On further movement of the rod 6 the support 9 abuts the member 5 at 19 so that the parts 11, 9, 15, 5, move together further compressing the spring 5 and permitting re-engagement of the nut 3 with abutment 17 to couple the rod-parts 1, 2, the parts 16, 4 having been moved away from the parts 3, 17 respectively. 'In a modification, the members 11, 15 are replaced by a bell-crank pivoted to the members 5, 9 and operated by an incline surface on the rod 6 sufficiently to disengage the nut 3 from the abutment 17, the subsequent movement of the parts 5, 9 and the lever as a whole being effected by direct engagement of an abutment on the rod 6 with the member 5. In a further form, Fig. 5, a spring 7b acting directly on the member 5 normally holds that member in the right hand position but is too weak to prevent engagement of the nut 3 with abutment 17 in a brake operation. The support 9 of the main spring 7a is adapted to bear on the member 5 through a bolt 29 which is operated by a bell-crank 30 and a friction shoe 31 bearing on the rod 6. At release of the brake the bolt is withdrawn to permit the support 9 to abut on the sleeve 10. When the brake is applied the bolt is interposed as shown and further movement of the, rod 6 engages an abutment 32 therein with the member 5. Specification 421,759 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE544053X | 1939-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB544053A true GB544053A (en) | 1942-03-25 |
Family
ID=6560273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14667/40A Expired GB544053A (en) | 1939-08-14 | 1940-09-27 | Improvements in automatic double acting slack adjusters for brakes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB544053A (en) |
-
1940
- 1940-09-27 GB GB14667/40A patent/GB544053A/en not_active Expired
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