GB852082A - Improvements in safe-load indicating devices for cranes or the like - Google Patents

Improvements in safe-load indicating devices for cranes or the like

Info

Publication number
GB852082A
GB852082A GB4878/58A GB487858A GB852082A GB 852082 A GB852082 A GB 852082A GB 4878/58 A GB4878/58 A GB 4878/58A GB 487858 A GB487858 A GB 487858A GB 852082 A GB852082 A GB 852082A
Authority
GB
United Kingdom
Prior art keywords
safe
load
cam
several
lever
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
GB4878/58A
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 GB4878/58A priority Critical patent/GB852082A/en
Priority to US791968A priority patent/US2988040A/en
Publication of GB852082A publication Critical patent/GB852082A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

852,082. Safe-load indicators for jib cranes. AITKEN, R. L. Feb. 9, 1959 [Feb. 14, 1958], No. 4878/58. Class 78 (4). In a safe-load indicating device of the type in which a control cam causes the maximum permitted load to vary with the reach of the jib, the link 12 (Fig. 1) which moves the cam can be connected to any of several anchorages 21 so that a single surface on the cam can be used with several different jib lengths. The construction shown uses the safe-load indicating device described in Specification 723,070, the anchorages 21 being formed in a plate 15 located on the crane structure. The control cam may have several surfaces 16, 17, 18, 19 (Fig. 2) one of which is selected according to the conditions of use, e.g. whether outriggers are extended. The cam is carried by a spider 10 (Fig. 1) which can be connected in one of several rotary positions to a lever arm 11 on the link 12. Two safe-load indicators 1 can be carried on the usual frame 2 and connected by a balancing beam to the operating lever 8, the two indicators being used under different conditions. In an alternative construction the lever 11 is formed as a circular disc having a series of holes for connection to the lever 12, only one anchorage being provided on the plate 15.
GB4878/58A 1958-02-14 1958-02-14 Improvements in safe-load indicating devices for cranes or the like Expired GB852082A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4878/58A GB852082A (en) 1958-02-14 1958-02-14 Improvements in safe-load indicating devices for cranes or the like
US791968A US2988040A (en) 1958-02-14 1959-02-09 Means for actuating safe load indicating devices for cranes or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4878/58A GB852082A (en) 1958-02-14 1958-02-14 Improvements in safe-load indicating devices for cranes or the like

Publications (1)

Publication Number Publication Date
GB852082A true GB852082A (en) 1960-10-26

Family

ID=9785533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4878/58A Expired GB852082A (en) 1958-02-14 1958-02-14 Improvements in safe-load indicating devices for cranes or the like

Country Status (2)

Country Link
US (1) US2988040A (en)
GB (1) GB852082A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1180916B (en) * 1961-09-26 1964-11-05 Rheinstahl Union Brueckenbau Overload protection device for jib cranes with jib position that can be changed by means of neck rope pull
DE1260097B (en) * 1963-05-20 1968-02-01 Weighload Ltd Kingston Upon Th Overload protection for luffing jib cranes
CN114590668A (en) * 2022-05-10 2022-06-07 大汉科技股份有限公司 Operation management system for unmanned elevator based on big data

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB980132A (en) * 1962-02-09 1965-01-13 Robert Loudon Aitken Improvements in safe load indicating devices for cranes
US3139988A (en) * 1962-07-24 1964-07-07 Thew Shovel Co Indicator for cranes and the like
US3200963A (en) * 1963-07-05 1965-08-17 Laszlo G Vermes Moment comparator
US3251483A (en) * 1963-12-02 1966-05-17 George C Devol Programmed article handling
GB993954A (en) * 1966-07-07 1965-06-02 Weighload Ltd Safe load indicators in jib cranes
SE356282B (en) * 1969-02-17 1973-05-21 Clark Equipment Co
US3934739A (en) * 1974-02-13 1976-01-27 Standard Havens, Inc. Self-erecting surge storage system
US3952879A (en) * 1975-02-14 1976-04-27 Fulton Industries, Inc. Overload control for lifting boom
US4283722A (en) * 1977-11-11 1981-08-11 Kabushiki Kaisha Kito Overload indication device for a lever hoist

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB723070A (en) * 1953-10-15 1955-02-02 Robert Loudon Aitken Improvements in safe-load indicating devices for cranes or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1180916B (en) * 1961-09-26 1964-11-05 Rheinstahl Union Brueckenbau Overload protection device for jib cranes with jib position that can be changed by means of neck rope pull
DE1260097B (en) * 1963-05-20 1968-02-01 Weighload Ltd Kingston Upon Th Overload protection for luffing jib cranes
CN114590668A (en) * 2022-05-10 2022-06-07 大汉科技股份有限公司 Operation management system for unmanned elevator based on big data

Also Published As

Publication number Publication date
US2988040A (en) 1961-06-13

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