GB679126A - Improvements in or relating to power operated friction drum brakes - Google Patents
Improvements in or relating to power operated friction drum brakesInfo
- 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
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
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/16—Brakes 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.
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)
| 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 |
-
1949
- 1949-07-20 GB GB1914149A patent/GB679126A/en not_active Expired
Cited By (2)
| 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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