GB532904A - Improvements in and relating to safety devices for hoists - Google Patents
Improvements in and relating to safety devices for hoistsInfo
- Publication number
- GB532904A GB532904A GB2652939A GB2652939A GB532904A GB 532904 A GB532904 A GB 532904A GB 2652939 A GB2652939 A GB 2652939A GB 2652939 A GB2652939 A GB 2652939A GB 532904 A GB532904 A GB 532904A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cage
- rope
- landing
- gate
- well
- 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
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
- B66B1/08—Control systems without regulation, i.e. without retroactive action electric with devices, e.g. handles or levers, in the cars or cages for direct control of movements
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
532,904. Control mechanism for lifts. DON BROS. BUIST & CO., Ltd., and THOMSON, F. M. Sept. 23, 1939, No. 26529. [Class 78 (iii)] The handing-rope of a lift is locked by mechanism in series with cage and well switches so that (1) the gate at any landing can only be opened when the cage is at that landing ; (2) the cage cannot be moved from a landing until all cage and well gates are closed, and (3) the handing-rope is locked automatically whenever any gate is opened. The hand-rope 1 is locked normally by a cam 3 which presses a movable shoe 2 inwards to force the rope against a fixed shoe 11. Depression of the hand-lever or treadle 8 against the action of the spring 10 releases the rope. The weight of the core 16 of a solenoid 15 overbalances a weighted lever 13 and causes it to register with a spur 12 on the cam shaft thus preventing operation of the treadle. When all gates are closed a circuit is completed through the solenoid, the core is lifted and the lever 13 tilts by gravity to release the spur. The treadle can then be operated to release the rope. Electric switches 17, Fig. 4, for example rockable mercury switches, are arranged at each floor and are all wired in series with the cage gate switch 19 and the coil 15 of the solenoid. Also at each landing a catch 21 in the well is engaged by a projection 24 on the well gate to lock the latter in the closed position. A striker plate on the cage moves the member 21 out of engagement with the member 24 as the cage arrives at the landing. A lamp 25 may be in circuit with the gate switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2652939A GB532904A (en) | 1939-09-23 | 1939-09-23 | Improvements in and relating to safety devices for hoists |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2652939A GB532904A (en) | 1939-09-23 | 1939-09-23 | Improvements in and relating to safety devices for hoists |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB532904A true GB532904A (en) | 1941-02-03 |
Family
ID=10245062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2652939A Expired GB532904A (en) | 1939-09-23 | 1939-09-23 | Improvements in and relating to safety devices for hoists |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB532904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562907A (en) * | 2016-08-01 | 2019-04-02 | 三菱电机株式会社 | The cage fixture mechanism of elevator |
-
1939
- 1939-09-23 GB GB2652939A patent/GB532904A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562907A (en) * | 2016-08-01 | 2019-04-02 | 三菱电机株式会社 | The cage fixture mechanism of elevator |
| CN109562907B (en) * | 2016-08-01 | 2023-09-26 | 三菱电机株式会社 | Car fixing device of elevator |
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