GB997993A - A crane - Google Patents

A crane

Info

Publication number
GB997993A
GB997993A GB4525561A GB4525561A GB997993A GB 997993 A GB997993 A GB 997993A GB 4525561 A GB4525561 A GB 4525561A GB 4525561 A GB4525561 A GB 4525561A GB 997993 A GB997993 A GB 997993A
Authority
GB
United Kingdom
Prior art keywords
jib
load
rope
switch
abutment
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
GB4525561A
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 GB997993A publication Critical patent/GB997993A/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
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/703—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by flexible elements, e.g. cables, chains or bands
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/20—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 specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
    • B66C23/22—Window cranes, i.e. adapted to be supported in window openings

Landscapes

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

Abstract

997,993. Telescopic jib cranes. W. GALLATI. Dec. 18, 1961 [Dec. 19, 1960], No.45255/61. Heading B8B. As a load 38 is raised by a winch 17 an abutment 37 engages a rib 35 to luff a jib 26, 27 and push the portion 27 into portion 26 against the extending action of a rope 30 which passes from a point 28 on the jib section 27, round a pulley 31, mounted on jib section 26, to a fixed point 32. The jib is pivoted to a rod 12 which rotates in bearings 10 attached to the wall 1 of a building so that the load can be slewed into the building. As the jib is luffed, a pulley 19, which bears on the cable 18, is raised and pivots a lever 20 to move a switch 21 to its central "off" position by pulling on a rope 22b. To lower the load the switch 21 is turned to the left and when the cable 18 becomes slack, due to the load resting on the ground, the lever 20 pivots clockwise, either under its own weight or by spring action, thereby pulling the switch 21 back to the "off" position by rope 22a. When raising a heavy load the abutment 37, which allows the load to revolve without twisting the rope, bears down on a rib 36 to ensure retraction of the jib.
GB4525561A 1960-12-19 1961-12-18 A crane Expired GB997993A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1412160A CH386076A (en) 1960-12-19 1960-12-19 Lifting device, in particular for use as a material elevator on building exterior walls

Publications (1)

Publication Number Publication Date
GB997993A true GB997993A (en) 1965-07-14

Family

ID=4398165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4525561A Expired GB997993A (en) 1960-12-19 1961-12-18 A crane

Country Status (3)

Country Link
AT (1) AT241067B (en)
CH (1) CH386076A (en)
GB (1) GB997993A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601633A (en) * 1984-12-07 1986-07-22 The United States Of America As Represented By The Secretary Of The Army Hoist

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858890A (en) * 1988-02-26 1989-08-22 Brand Scaffold Services, Ltd. Method and apparatus for lifting objects inside a limited access vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601633A (en) * 1984-12-07 1986-07-22 The United States Of America As Represented By The Secretary Of The Army Hoist

Also Published As

Publication number Publication date
AT241067B (en) 1965-07-12
CH386076A (en) 1964-12-31

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