GB563591A - Improvements in or relating to safety devices for lifts, skips, cages and the like - Google Patents
Improvements in or relating to safety devices for lifts, skips, cages and the likeInfo
- Publication number
- GB563591A GB563591A GB16651/42A GB1665142A GB563591A GB 563591 A GB563591 A GB 563591A GB 16651/42 A GB16651/42 A GB 16651/42A GB 1665142 A GB1665142 A GB 1665142A GB 563591 A GB563591 A GB 563591A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guides
- brake
- cable
- cage
- shoes
- 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
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/20—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of rotatable eccentrically-mounted members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
563,591. Catch gear for lifts. MACLEAN, G. R., and BARDER, H. Nov. 24, 1942, No. 16651. Convention date, Dec. 23, 1941. [Class 78 (iii)] A safety device for lifts, mine cages, and the like, comprises a cross-bar that extends between and slides on opposite guides in a lift shaft, and brake shoes pivoted to the cross-bar and to a lever pivoted in the lift cage, the arrangement being such that the shoes are held out of contact with the guides when the haulage cable is intact but are forced against the guides if the cable should break. The brake blocks are covered with a layer of soft, readily fusible metal. The cross-head 6, Fig. 1, is provided at its end with runners 7 that engage the shaft guides 3. The brake shoes 12 are pivoted at 10 to the runners 7 and also to links 16 which are pivoted to the sides of the cage 1. Springs 14 urge the brake shoes into contact with the guides 3, but a loop 5 of the haulage cable 2 passes through holes 20 in the ends of the links 16 and normally holds the brake shoes in the position shown. If the cable 2 should break, the shoes are swung downwards into contact with the guides by the springs 14 and by gravity, and when the fall of of the cage'is arrested, its weight keeps it in the arrested position. A canopy 23 with inclined sides is fitted to the cross-bar 6 to protect the cage from damage by a falling cable. Each brake shoe 12 is fitted with a pair of inclined brake blocks 25, Fig. 4, a curved leaf spring 25a arranged between them, and a body 26 of readily-fusible metal moulded over the blocks. When the brakes come into action, the friction between the guides 3 and the bodies 26 heats and melts the fusible metal, and the braking-friction is brought into action gradually.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA563591X | 1941-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB563591A true GB563591A (en) | 1944-08-22 |
Family
ID=25560407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16651/42A Expired GB563591A (en) | 1941-12-23 | 1942-11-24 | Improvements in or relating to safety devices for lifts, skips, cages and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB563591A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142904A (en) * | 1983-06-15 | 1985-01-30 | Litton Systems Inc | Safety brake for vertical lift |
CN103708312A (en) * | 2012-10-06 | 2014-04-09 | 李卫东 | Elevator passenger/freight car aerial rope-breakage magnetic attraction automatic/manual brake protector |
CN113526316A (en) * | 2021-09-16 | 2021-10-22 | 徐州亚益吉机械制造有限公司 | Mechanical transportation device for mine |
-
1942
- 1942-11-24 GB GB16651/42A patent/GB563591A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2142904A (en) * | 1983-06-15 | 1985-01-30 | Litton Systems Inc | Safety brake for vertical lift |
CN103708312A (en) * | 2012-10-06 | 2014-04-09 | 李卫东 | Elevator passenger/freight car aerial rope-breakage magnetic attraction automatic/manual brake protector |
CN113526316A (en) * | 2021-09-16 | 2021-10-22 | 徐州亚益吉机械制造有限公司 | Mechanical transportation device for mine |
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