GB658077A - Improvements in cranes with vertically adjustable jibs - Google Patents

Improvements in cranes with vertically adjustable jibs

Info

Publication number
GB658077A
GB658077A GB21338/49A GB2133849A GB658077A GB 658077 A GB658077 A GB 658077A GB 21338/49 A GB21338/49 A GB 21338/49A GB 2133849 A GB2133849 A GB 2133849A GB 658077 A GB658077 A GB 658077A
Authority
GB
United Kingdom
Prior art keywords
jib
load
cable
cranes
drum
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
GB21338/49A
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
Publication of GB658077A publication Critical patent/GB658077A/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
    • B66C2700/0314—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib in combination with the movement of the counterweight

Landscapes

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

Abstract

658,077. Jib cranes. WULLSCHLEGER, A. Aug. 16, 1949, No. 21338. Convention date, Aug. 17, 1948. [Class 78 (iv)] In a load-lifting device for cranes with vertically adjustable jibs, the load cable pull and the jib lifting mechanism set up in two interconnected rotating bodies oppositely directed torsional moments which counterbalance so that when the rotating bodies are actuated by means of the jib lifting mechanism the handling radius of the jib is altered, the load is horizontally shifted and the weight of the jib is counterbalanced. The jib is pivotally mounted on a pillar 4, 5, 6 and a hauling rope 9 has a hook 7 for the load. The rope 9 is connected at one end to a cable drum 14 and the other end connected to a drum 15. A cable 22 has one end connected to the drum 23 and passes round sheaves 18 and 19 and is connected to the block at the other end. The block is also connected to the jib. On rotating the load cable drums 15, 23, the jib is raised and the diameters of the drums are so chosen that the moments of the forces acting are balanced. The weight of the jib is balanced by weight P, Fig. 4. The load moves along a horizontal path. Instead of pulley tackle, mechanical lifting-gear without cables may be used.
GB21338/49A 1948-08-17 1949-08-16 Improvements in cranes with vertically adjustable jibs Expired GB658077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH658077X 1948-08-17

Publications (1)

Publication Number Publication Date
GB658077A true GB658077A (en) 1951-10-03

Family

ID=4526653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21338/49A Expired GB658077A (en) 1948-08-17 1949-08-16 Improvements in cranes with vertically adjustable jibs

Country Status (1)

Country Link
GB (1) GB658077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951112C (en) * 1951-12-08 1956-10-25 Hanomag Ag Tractor or the like with a 3- or 4-point suspension to which a load weight can be attached

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951112C (en) * 1951-12-08 1956-10-25 Hanomag Ag Tractor or the like with a 3- or 4-point suspension to which a load weight can be attached

Similar Documents

Publication Publication Date Title
GB1311767A (en) Tower cranes with counterbalancing arm
GB1070250A (en) Improvements in and relating to crane units
GB1101890A (en) Improvements in or relating to tower cranes
GB658077A (en) Improvements in cranes with vertically adjustable jibs
SU88589A1 (en) Mechanism for automatic movement in jib cranes for counterweight
GB1104157A (en) Improvements relating to cranes
US2888150A (en) Level luffing attachment for cranes
GB387888A (en) An improved jib-crane with adjustable counterweight
GB1079159A (en) A crane having a principal mast and a pivotable auxiliary jib
GB586438A (en) Improvements in or relating to safe-load indicators for cranes
GB1085512A (en) Improvements relating to cranes
SU86770A1 (en) Cable Crane with non-opening fixed supports
GB860177A (en) Improvements in mobile cranes
GB746760A (en) An improved pillar crane
GB135704A (en) Improvements in Cranes, Derricks and the like.
GB602845A (en) Improvements in cranes or derricks
GB287886A (en)
GB1157286A (en) Improvements in and relating to Derricks for Hoisting Loads
GB596898A (en) Improvements relating to derricks
GB1113740A (en) A non-slewing luffing crane
GB562517A (en) Luffing and slewing crane
GB1414314A (en) Luffing cranes
GB686177A (en) Improvements relating to cranes
GB1032100A (en) Jib type crane apparatus
GB1461936A (en) Rereeving the cable of a hoisting gear