GB521501A - Improvements in tubular struts - Google Patents

Improvements in tubular struts

Info

Publication number
GB521501A
GB521501A GB33307/38A GB3330738A GB521501A GB 521501 A GB521501 A GB 521501A GB 33307/38 A GB33307/38 A GB 33307/38A GB 3330738 A GB3330738 A GB 3330738A GB 521501 A GB521501 A GB 521501A
Authority
GB
United Kingdom
Prior art keywords
engaging
fine adjustment
screwed
tubular
outer member
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
GB33307/38A
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.)
Scaffolding Great Britain Ltd
Original Assignee
Scaffolding Great Britain Ltd
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 Scaffolding Great Britain Ltd filed Critical Scaffolding Great Britain Ltd
Priority to GB33307/38A priority Critical patent/GB521501A/en
Publication of GB521501A publication Critical patent/GB521501A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/083—Shoring struts
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

521,501. Posts adapted to be jammed between opposed surfaces. SCAFFOLDING (GREAT BRITAIN), Ltd., and JONES, D. H. Nov. 16, 1938, No. 33307. [Class 20 (i)] A telescopic strut for extending between wallings in excavations comprises a notched inner tubular member 10 with a rotatable head 23, an outer tubular member 11 with a spring-pressed pawl 16 to engage the notches 12 in the inner member to provide for rough adjustment, and a second head 23 with a screwed stem 24 engaging a tapped hole in a bush 30 screwed into the outer end of the outer member to provide a fine adjustment. Relative rotation, between the tubular members is prevented by a projection 21 on the outer member engaging a slot 20 in the wall of the inner member. The prop is rotated for fine adjustment by means of a tommy rod passing through apertures in the outer member.
GB33307/38A 1938-11-16 1938-11-16 Improvements in tubular struts Expired GB521501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33307/38A GB521501A (en) 1938-11-16 1938-11-16 Improvements in tubular struts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33307/38A GB521501A (en) 1938-11-16 1938-11-16 Improvements in tubular struts

Publications (1)

Publication Number Publication Date
GB521501A true GB521501A (en) 1940-05-23

Family

ID=10351257

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33307/38A Expired GB521501A (en) 1938-11-16 1938-11-16 Improvements in tubular struts

Country Status (1)

Country Link
GB (1) GB521501A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535141A (en) * 1946-11-20 1950-12-26 William H Kenney Adjustable shore
US4842311A (en) * 1987-08-03 1989-06-27 Creative Light & Sound Corporation Safety latch
EP0470921A1 (en) * 1990-06-22 1992-02-12 Construcciones Desmontables Tubulares, S.A. Improved modular shoring system
CN113863969A (en) * 2021-10-11 2021-12-31 煤炭科学研究总院 Support column with self-locking structure
WO2023099906A1 (en) * 2021-12-03 2023-06-08 Autoshore Ltd Hydraulically operable trench shoring apparatus and its method of use
EP4227478A1 (en) * 2022-02-10 2023-08-16 Macc Strut that can be locked by an automatic locking system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535141A (en) * 1946-11-20 1950-12-26 William H Kenney Adjustable shore
US4842311A (en) * 1987-08-03 1989-06-27 Creative Light & Sound Corporation Safety latch
EP0470921A1 (en) * 1990-06-22 1992-02-12 Construcciones Desmontables Tubulares, S.A. Improved modular shoring system
CN113863969A (en) * 2021-10-11 2021-12-31 煤炭科学研究总院 Support column with self-locking structure
WO2023099906A1 (en) * 2021-12-03 2023-06-08 Autoshore Ltd Hydraulically operable trench shoring apparatus and its method of use
EP4227478A1 (en) * 2022-02-10 2023-08-16 Macc Strut that can be locked by an automatic locking system

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