GB402881A - Improvements in and relating to ships derricks and cargo working machinery - Google Patents

Improvements in and relating to ships derricks and cargo working machinery

Info

Publication number
GB402881A
GB402881A GB1984932A GB1984932A GB402881A GB 402881 A GB402881 A GB 402881A GB 1984932 A GB1984932 A GB 1984932A GB 1984932 A GB1984932 A GB 1984932A GB 402881 A GB402881 A GB 402881A
Authority
GB
United Kingdom
Prior art keywords
derrick
guys
slueing
sheaves
arms
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
GB1984932A
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.)
Clarke Chapman Group Ltd
Original Assignee
Clarke Chapman and Co Ltd
Clarke Chapman Group 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 Clarke Chapman and Co Ltd, Clarke Chapman Group Ltd filed Critical Clarke Chapman and Co Ltd
Priority to GB1984932A priority Critical patent/GB402881A/en
Publication of GB402881A publication Critical patent/GB402881A/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
    • B66C23/06—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 with jibs mounted for jibbing or luffing movements
    • B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Jib Cranes (AREA)

Abstract

402,881. Derricks. CLARKE, CHAPMAN, & CO., Ltd., Victoria Works, Gatesheadon-Tyne, Durham, and MACFARLANE, G. T., 16a, Station Parade, Northwood, Middlesex. July 13, 1932, No. 19849. [Class 78 (iv).] In a derrick 10 which slues to either side from the mid-position, the standing ends 31, 32 of the slueing guys 28, 29, or the anchorages for their guide sheaves 33, or both, are in alignment with the derrick foot 11 and the guys are led to sheaves 27 or pennants slung on lateral arms 25, 26 on the derrick. As shown, the arms are pivoted on a collar 37 to turn in one direction only about axes parallel to the derrick, so that when the derrick is slued, one arm 26 remains perpendicular to the plane containing the derrick and the mast, and the other arm 25 turns into the plane containing the derrick and the guy 28 so as to reduce torque on the derrick. The ends of the arms 25, 25 are stayed from the top of the derrick by guys 42 including stretching screws or tensioning devices 44. The slueing guys are connected to the arms through spring devices 45. The slueing guys are led round sheaves 33 in alignment with the points 11, 31, 32 and are wound oppositely on barrels 35, 36 which rotate together. The load rope 20 and topping lift 15 are wound on drums 24, 19. The winch gear is described in Specification 404,158. The derrick may be slued whilst at any height, but with heavy loads the anchors 31, 32 and the sheaves 33 may be moved to other positions in alignment with the derrick foot 11. The topping mechanism may be operated with the derrick in any position athwartship without operating the slueing barrels. With the guy anchors placed symmetrically as shown, a grab or other load moves substantially in a vertical plane parallel to the ship's axis when the derrick is topped or lowered, and with the sheave 22 for the load rope suitably placed, the grab or load moves substantially in a horizontal path. Specification 354,235 is referred to.
GB1984932A 1932-07-13 1932-07-13 Improvements in and relating to ships derricks and cargo working machinery Expired GB402881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1984932A GB402881A (en) 1932-07-13 1932-07-13 Improvements in and relating to ships derricks and cargo working machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1984932A GB402881A (en) 1932-07-13 1932-07-13 Improvements in and relating to ships derricks and cargo working machinery

Publications (1)

Publication Number Publication Date
GB402881A true GB402881A (en) 1933-12-14

Family

ID=10136232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1984932A Expired GB402881A (en) 1932-07-13 1932-07-13 Improvements in and relating to ships derricks and cargo working machinery

Country Status (1)

Country Link
GB (1) GB402881A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112919B (en) * 1958-01-31 1961-08-17 William L Banks Jun Loading boom guide for pivoting and topping up a loading boom
DE1202168B (en) * 1960-08-27 1965-09-30 Uetersener Maschinenfabrik Hat Winch system for ship loading booms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1112919B (en) * 1958-01-31 1961-08-17 William L Banks Jun Loading boom guide for pivoting and topping up a loading boom
DE1202168B (en) * 1960-08-27 1965-09-30 Uetersener Maschinenfabrik Hat Winch system for ship loading booms

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