GB521515A - Novel or improved safety device for use with hoists - Google Patents
Novel or improved safety device for use with hoistsInfo
- Publication number
- GB521515A GB521515A GB3367638A GB3367638A GB521515A GB 521515 A GB521515 A GB 521515A GB 3367638 A GB3367638 A GB 3367638A GB 3367638 A GB3367638 A GB 3367638A GB 521515 A GB521515 A GB 521515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chain
- prevents
- hoists
- novel
- chain wheel
- 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)
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
Abstract
521,515. Safety-suspenison apparatus for lifts. AUSTIN MOTOR CO., Ltd., KING, Ltd., G. W., and HALL, L. H. Nov. 19, 1938, No. 33676. [Class 78 (iii)] When the suspension rope A breaks, the auxiliary chain B takes up the strain and tends to raise the comparatively light balance weight b, which resists the action sufficiently to cause the chain sprocket D to be pulled downwards by compressing the springs J. This brings the teeth G of a ratchet wheel on the sprocket shaft into register with a fixed block M and so prevents further rotation of the chain wheel. In the depressed position a spring plunger N, Fig. 6, enters a slot P in the guides and prevents the chain wheel structure from rising again until positively released. The downward movement may operate a switch to cut out the hoisting motor at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3367638A GB521515A (en) | 1938-11-19 | 1938-11-19 | Novel or improved safety device for use with hoists |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3367638A GB521515A (en) | 1938-11-19 | 1938-11-19 | Novel or improved safety device for use with hoists |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521515A true GB521515A (en) | 1940-05-23 |
Family
ID=10355999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3367638A Expired GB521515A (en) | 1938-11-19 | 1938-11-19 | Novel or improved safety device for use with hoists |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521515A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3501136A (en) * | 1966-11-04 | 1970-03-17 | Voest Ag | Device for lifting and lowering oxygen lances for top-blowing converters |
| US4057219A (en) * | 1975-05-05 | 1977-11-08 | General Electric Company | Counterpoising load support apparatus and method |
| CN106865384A (en) * | 2017-05-02 | 2017-06-20 | 中国矿业大学 | Extra deep shaft duplex type boom hoist cable tension self_poise system and method |
-
1938
- 1938-11-19 GB GB3367638A patent/GB521515A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3501136A (en) * | 1966-11-04 | 1970-03-17 | Voest Ag | Device for lifting and lowering oxygen lances for top-blowing converters |
| US4057219A (en) * | 1975-05-05 | 1977-11-08 | General Electric Company | Counterpoising load support apparatus and method |
| CN106865384A (en) * | 2017-05-02 | 2017-06-20 | 中国矿业大学 | Extra deep shaft duplex type boom hoist cable tension self_poise system and method |
| CN106865384B (en) * | 2017-05-02 | 2018-12-28 | 中国矿业大学 | Extra deep shaft duplex type boom hoist cable tension self_poise system and method |
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