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GB655970A - Improvements in the application of the "lazy-tongs" system to collapsible towers andthe like - Google Patents

Improvements in the application of the "lazy-tongs" system to collapsible towers andthe like

Info

Publication number
GB655970A
GB655970A GB3213748A GB3213748A GB655970A GB 655970 A GB655970 A GB 655970A GB 3213748 A GB3213748 A GB 3213748A GB 3213748 A GB3213748 A GB 3213748A GB 655970 A GB655970 A GB 655970A
Authority
GB
United Kingdom
Prior art keywords
tower
links
lazy
tongs
andthe
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
GB3213748A
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.)
JOHN FENWICK HUTCHINGS
Original Assignee
JOHN FENWICK HUTCHINGS
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 JOHN FENWICK HUTCHINGS filed Critical JOHN FENWICK HUTCHINGS
Priority to GB3213748A priority Critical patent/GB655970A/en
Publication of GB655970A publication Critical patent/GB655970A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

655,970. Load-handling machines. HUTCHINGS, J. F. Jan. 13, 1948, No. 32137. [Class 78 (iii)] [Also in Groups X and XV] A collapsable tower, mast, &c. which may carry an observation pavilion 1. comprises three lazy-tongs systems formed of links 2 coupled together to form a structure equilaterally triangular in cross-section. At the top and bottom of the tower, the links are connected to three sliding feet 4, 6. The tower, when collapsed, is contained in a cavity 10 and is raised by a motor with the aid of a counterweight 7 by sliding the feet inwards. The pavilion may be rotated. The pairs of links may be pivoted eccentrically so that the structure tapers. Springs or hydraulic means at the link pivots facilitate raising.
GB3213748A 1948-12-13 1948-12-13 Improvements in the application of the "lazy-tongs" system to collapsible towers andthe like Expired GB655970A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3213748A GB655970A (en) 1948-12-13 1948-12-13 Improvements in the application of the "lazy-tongs" system to collapsible towers andthe like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3213748A GB655970A (en) 1948-12-13 1948-12-13 Improvements in the application of the "lazy-tongs" system to collapsible towers andthe like

Publications (1)

Publication Number Publication Date
GB655970A true GB655970A (en) 1951-08-08

Family

ID=10333852

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3213748A Expired GB655970A (en) 1948-12-13 1948-12-13 Improvements in the application of the "lazy-tongs" system to collapsible towers andthe like

Country Status (1)

Country Link
GB (1) GB655970A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053351A (en) * 1960-02-19 1962-09-11 Junius H Fulcher Structural device
GB2217215A (en) * 1988-04-09 1989-10-25 Michael Headlam Purser Arrangement including a moveable tower
GB2256444A (en) * 1991-05-25 1992-12-09 Robert Laxton John Burdon Foldable structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053351A (en) * 1960-02-19 1962-09-11 Junius H Fulcher Structural device
GB2217215A (en) * 1988-04-09 1989-10-25 Michael Headlam Purser Arrangement including a moveable tower
GB2217215B (en) * 1988-04-09 1992-02-12 Michael Headlam Purser Arrangement including a moveable tower
US5149304A (en) * 1988-04-09 1992-09-22 Purser Michael H Arrangement including a moveable tower
GB2256444A (en) * 1991-05-25 1992-12-09 Robert Laxton John Burdon Foldable structure

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