GB966981A - Improvements in and relating to booms and the like for lifting equipment - Google Patents

Improvements in and relating to booms and the like for lifting equipment

Info

Publication number
GB966981A
GB966981A GB535261A GB535261A GB966981A GB 966981 A GB966981 A GB 966981A GB 535261 A GB535261 A GB 535261A GB 535261 A GB535261 A GB 535261A GB 966981 A GB966981 A GB 966981A
Authority
GB
United Kingdom
Prior art keywords
derrick
booms
feb
relating
mast
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
GB535261A
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.)
HARRY FREDERICK LAWRENCE
Original Assignee
HARRY FREDERICK LAWRENCE
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 HARRY FREDERICK LAWRENCE filed Critical HARRY FREDERICK LAWRENCE
Priority to GB535261A priority Critical patent/GB966981A/en
Publication of GB966981A publication Critical patent/GB966981A/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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths

Landscapes

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

Abstract

966,981. Cranes. H. F. LAWRENCE. Feb. 27, 1962 [Feb. 13, 1961], No. 5352/61. Heading B8B. [Also in Divisions E1 and F2] Booms for derricks &c. are built of box units connected end to end by screws. One derrick comprises a boom 24 supported by a mast 23 having back stays 24. The foot block 30 comprising the mast step and fairleads for running rigging is connected to two ground cills 26, each in two sections and supporting the back stays. The bull-wheel 28 has bracing 29. The derrick is operated by an electric four drum winch. A guy derrick, gin poles, a piling frame and a tower crane are also described.
GB535261A 1961-02-13 1961-02-13 Improvements in and relating to booms and the like for lifting equipment Expired GB966981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB535261A GB966981A (en) 1961-02-13 1961-02-13 Improvements in and relating to booms and the like for lifting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB535261A GB966981A (en) 1961-02-13 1961-02-13 Improvements in and relating to booms and the like for lifting equipment

Publications (1)

Publication Number Publication Date
GB966981A true GB966981A (en) 1964-08-19

Family

ID=9794485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB535261A Expired GB966981A (en) 1961-02-13 1961-02-13 Improvements in and relating to booms and the like for lifting equipment

Country Status (1)

Country Link
GB (1) GB966981A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
US3557969A (en) * 1967-04-06 1971-01-26 Coles Krane Gmbh Outrigger mast for crane
CN111377367A (en) * 2020-04-22 2020-07-07 浙江三一装备有限公司 Truss arm and crane

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557969A (en) * 1967-04-06 1971-01-26 Coles Krane Gmbh Outrigger mast for crane
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
CN111377367A (en) * 2020-04-22 2020-07-07 浙江三一装备有限公司 Truss arm and crane
CN111377367B (en) * 2020-04-22 2022-03-01 浙江三一装备有限公司 Truss arm and crane

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