GB272286A - Improvements in and relating to cranes - Google Patents

Improvements in and relating to cranes

Info

Publication number
GB272286A
GB272286A GB653926A GB653926A GB272286A GB 272286 A GB272286 A GB 272286A GB 653926 A GB653926 A GB 653926A GB 653926 A GB653926 A GB 653926A GB 272286 A GB272286 A GB 272286A
Authority
GB
United Kingdom
Prior art keywords
lever
jib
luffing
rope
compensating
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
GB653926A
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.)
WILLIAM EDWIN WRIGHT
Original Assignee
WILLIAM EDWIN WRIGHT
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 WILLIAM EDWIN WRIGHT filed Critical WILLIAM EDWIN WRIGHT
Priority to GB653926A priority Critical patent/GB272286A/en
Publication of GB272286A publication Critical patent/GB272286A/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

272,286. Wright, W. E. March 9, 1926. Jib-cranes.-Relates to level luffing gear of the type in which the load rope c passes over a compensating pulley on a pivoted lever. The lever a is pivoted at a<1> and carries two or more pulleys j, j<1> so arranged that when the jib is at minimum radius, Fig. 2, only one pulley j<1> engages the load-rope, and as the jib swings out, Fig. 1, the other pulley j comes into engagement. The lever a may carry a series of pulleys arranged along an arc of a circle. The jib is luffed by a crank p and mechanism o, a<2>, m, and the compensating lever a is operated from the luffing lever a<2> by a link s. The luffing lever a<2> carries a counterweight k. In a modification, the links s, o are connected with the same arm of the lever a<2>. The Provisional Specification describes modifications with the compensating lever operated by a flexible connection or pivoted on the jib or on the luffing-mechanism, with two or more falls of rope, with a cam or pins in place of pulleys for deflecting the rope, and with the compensating lever replaced by a toothed segment which drives a drum for winding the dead end of the load rope as the segment oscillates during luffing.
GB653926A 1926-03-09 1926-03-09 Improvements in and relating to cranes Expired GB272286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB653926A GB272286A (en) 1926-03-09 1926-03-09 Improvements in and relating to cranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB653926A GB272286A (en) 1926-03-09 1926-03-09 Improvements in and relating to cranes

Publications (1)

Publication Number Publication Date
GB272286A true GB272286A (en) 1927-06-09

Family

ID=9816331

Family Applications (1)

Application Number Title Priority Date Filing Date
GB653926A Expired GB272286A (en) 1926-03-09 1926-03-09 Improvements in and relating to cranes

Country Status (1)

Country Link
GB (1) GB272286A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162528B (en) * 1962-12-20 1964-02-06 Mohr & Federhaff Ag Single link luffing crane for piece goods and grab operation with a horizontal load path
EP0508907A1 (en) * 1991-04-12 1992-10-14 Alberto Munarriz Aldaz Tilting counterweight arrangement for deployable cranes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1162528B (en) * 1962-12-20 1964-02-06 Mohr & Federhaff Ag Single link luffing crane for piece goods and grab operation with a horizontal load path
EP0508907A1 (en) * 1991-04-12 1992-10-14 Alberto Munarriz Aldaz Tilting counterweight arrangement for deployable cranes

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