GB522041A - Improvements in or relating to lifting devices - Google Patents

Improvements in or relating to lifting devices

Info

Publication number
GB522041A
GB522041A GB35302/38A GB3530238A GB522041A GB 522041 A GB522041 A GB 522041A GB 35302/38 A GB35302/38 A GB 35302/38A GB 3530238 A GB3530238 A GB 3530238A GB 522041 A GB522041 A GB 522041A
Authority
GB
United Kingdom
Prior art keywords
arm
base
nut
pivoted
inner end
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
GB35302/38A
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 GB522041A publication Critical patent/GB522041A/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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • 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
    • B66C2700/0392—Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm

Landscapes

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

Abstract

522,041. Load-handling apparatus. ALLARD, P. J. M. T. Dec. 3, 1938, No. 35302. Convention date, Dec. 17, 1937. [Class 78 (iii). Lifting apparatus constructed with a jiblike arm mounted on a supporting base by a link is actuated by screw and nut mechanism at the inner end of the arm so that the free end moves in a substantially vertical path. The arm 5 is pivoted on a link 22 pivoted to the base 1 and the inner end of the arm is bifurcated to support a nut 26,engaging a screw 27 which can be rotated through gears 36, 37 from a motor. The nut travels along an inclined slide on the base and rollers 32. 33 mounted on pins on the nut travel in fixed tracks on the base. The base may be mounted on wheels or endless tracks. The Specification, as open to inspection under Sect. 91, describes an arrangement in which the arm is supported from the base by two links at the inner end of the arm and at an intermediate point respectively, and the cam is raised and lowered by a cable passing round pulleys on the base and on the pivoted end of the arm and leading to a winch. This subjectmatter does not appear in the Specification as accepted.
GB35302/38A 1937-12-17 1938-12-03 Improvements in or relating to lifting devices Expired GB522041A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR522041X 1937-12-17

Publications (1)

Publication Number Publication Date
GB522041A true GB522041A (en) 1940-06-06

Family

ID=8917617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35302/38A Expired GB522041A (en) 1937-12-17 1938-12-03 Improvements in or relating to lifting devices

Country Status (1)

Country Link
GB (1) GB522041A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272928A (en) * 1962-03-07 1966-09-13 Electricite De France Apparatus for electrical and fluid connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272928A (en) * 1962-03-07 1966-09-13 Electricite De France Apparatus for electrical and fluid connection

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