GB1000613A - Safe load indicators for jib cranes - Google Patents

Safe load indicators for jib cranes

Info

Publication number
GB1000613A
GB1000613A GB482063A GB482063A GB1000613A GB 1000613 A GB1000613 A GB 1000613A GB 482063 A GB482063 A GB 482063A GB 482063 A GB482063 A GB 482063A GB 1000613 A GB1000613 A GB 1000613A
Authority
GB
United Kingdom
Prior art keywords
jib
series
crane
safe load
switches
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
GB482063A
Inventor
John Charles Adey
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.)
British Hoist & Crane Co
Original Assignee
British Hoist & Crane Co
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 British Hoist & Crane Co filed Critical British Hoist & Crane Co
Priority to GB482063A priority Critical patent/GB1000613A/en
Publication of GB1000613A publication Critical patent/GB1000613A/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
    • B66C23/905—Devices for indicating or limiting lifting moment electrical

Landscapes

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

Abstract

1,000,613. Overload indicators for jib cranes. BRITISH HOIST & CRANE CO. Ltd. Feb. 6, 1964 [Feb. 6, 1963], No. 4820/63. Heading B8B. A safe load indicator for a luffing crane with a telescopic jib comprises a first series of electric switches which are actuated in succession as the jib is extended and a second series of switches associated with the first series which are actuated as the jib is luffed and means responding to both series of switches to operate an alarm or indicating device. The maximum safe load is indicated to the crane operator by lamps which light in a control panel. A device may be incorporated in the load cable which indicates to the operator the actual load being lifted. The working length of the jib may also be indicated. Figs. 1-4 of the Provisional Specification (not shown) illustrate a circuit diagram of one embodiment of the invention.
GB482063A 1963-02-06 1963-02-06 Safe load indicators for jib cranes Expired GB1000613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB482063A GB1000613A (en) 1963-02-06 1963-02-06 Safe load indicators for jib cranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB482063A GB1000613A (en) 1963-02-06 1963-02-06 Safe load indicators for jib cranes

Publications (1)

Publication Number Publication Date
GB1000613A true GB1000613A (en) 1965-08-11

Family

ID=9784425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB482063A Expired GB1000613A (en) 1963-02-06 1963-02-06 Safe load indicators for jib cranes

Country Status (1)

Country Link
GB (1) GB1000613A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641551A (en) * 1968-12-19 1972-02-08 Grove Mfg Co Safe load control system for telescopic crane booms
US4003482A (en) * 1972-11-27 1977-01-18 Societe Anonyme Dite: Potain Poclain Materiel Safety device for a crane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641551A (en) * 1968-12-19 1972-02-08 Grove Mfg Co Safe load control system for telescopic crane booms
US4003482A (en) * 1972-11-27 1977-01-18 Societe Anonyme Dite: Potain Poclain Materiel Safety device for a crane

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