GB235287A - Brake operating mechanism for hoists and the like - Google Patents

Brake operating mechanism for hoists and the like

Info

Publication number
GB235287A
GB235287A GB609724A GB609724A GB235287A GB 235287 A GB235287 A GB 235287A GB 609724 A GB609724 A GB 609724A GB 609724 A GB609724 A GB 609724A GB 235287 A GB235287 A GB 235287A
Authority
GB
United Kingdom
Prior art keywords
brakes
overwinding
event
brake
core
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
GB609724A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB609724A priority Critical patent/GB235287A/en
Publication of GB235287A publication Critical patent/GB235287A/en
Expired legal-status Critical Current

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
    • B66B5/08—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for preventing overwinding
    • B66B5/10—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for preventing overwinding electrical

Landscapes

  • Braking Arrangements (AREA)

Abstract

235,287. Logan, H. H. March 10, 1924. Brakes; stopping automatically at end of run. -Automatic brake-operating means for hoists, of the kind in which the brakes are applied slowly in the event of overspeed and quickly in the event of overwinding, through the agency of a brake-operating member, released bv the de-energizing of an electric circuit and limited in its movement by an adjustable stop controlled by mechanism synchronized with the winding-gear, is characterized by an adjustable brake-operating member consisting of an armature or core which is held against the action of gravity by an electromagnet or solenoid and engages the adjustable stop directly on de-energization of the circuit. Thus the automatic opening of switch 17 releases the solenoid core 20, allowing the latter to fall by gravity and operate the brakes through the rod 24. During the normal run a stepped member 12 is in register with the adjustable stop 25 to limit the downward movement of the core, but in the event of overwinding, the member 12 is withdrawn gradually by cams 2 on the disc 1 geared to the drum, thus allowing the stop 25 to fall to a greater extent as the overwinding proceeds, to give a graduated harder application of the brakes. Specification 152,466 is referred to.
GB609724A 1924-03-10 1924-03-10 Brake operating mechanism for hoists and the like Expired GB235287A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB609724A GB235287A (en) 1924-03-10 1924-03-10 Brake operating mechanism for hoists and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB609724A GB235287A (en) 1924-03-10 1924-03-10 Brake operating mechanism for hoists and the like

Publications (1)

Publication Number Publication Date
GB235287A true GB235287A (en) 1925-06-10

Family

ID=9808312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB609724A Expired GB235287A (en) 1924-03-10 1924-03-10 Brake operating mechanism for hoists and the like

Country Status (1)

Country Link
GB (1) GB235287A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103523630A (en) * 2013-10-30 2014-01-22 成都市第二建筑工程公司 Safe limitation device for preventing elevator cage of building hoist from going beyond roof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103523630A (en) * 2013-10-30 2014-01-22 成都市第二建筑工程公司 Safe limitation device for preventing elevator cage of building hoist from going beyond roof
CN103523630B (en) * 2013-10-30 2016-02-24 成都市第二建筑工程公司 Construction lifter cage roof fall safety caging device

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