GB521515A - Novel or improved safety device for use with hoists - Google Patents

Novel or improved safety device for use with hoists

Info

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
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
Application number
GB3367638A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Austin Motor Co Ltd
Geo W King Ltd
Original Assignee
Austin Motor Co Ltd
Geo W King Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Austin Motor Co Ltd, Geo W King Ltd filed Critical Austin Motor Co Ltd
Priority to GB3367638A priority Critical patent/GB521515A/en
Publication of GB521515A publication Critical patent/GB521515A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00Control systems of elevators in general
    • B66B1/02Control systems without regulation, i.e. without retroactive action
    • B66B1/06Control systems without regulation, i.e. without retroactive action electric
    • B66B1/08Control 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

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.
GB3367638A 1938-11-19 1938-11-19 Novel or improved safety device for use with hoists Expired GB521515A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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