GB622131A - Improvements in adjustable metal props - Google Patents

Improvements in adjustable metal props

Info

Publication number
GB622131A
GB622131A GB31344/46A GB3134446A GB622131A GB 622131 A GB622131 A GB 622131A GB 31344/46 A GB31344/46 A GB 31344/46A GB 3134446 A GB3134446 A GB 3134446A GB 622131 A GB622131 A GB 622131A
Authority
GB
United Kingdom
Prior art keywords
nut
pin
threaded portion
adjustable metal
metal props
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
GB31344/46A
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.)
Acrow Engineers Ltd
Original Assignee
Acrow Engineers 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 Acrow Engineers Ltd filed Critical Acrow Engineers Ltd
Priority to GB31344/46A priority Critical patent/GB622131A/en
Publication of GB622131A publication Critical patent/GB622131A/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
    • 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
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • 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
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • E04G25/063—Shores or struts; Chocks telescopic with parts held together by positive means by pins with safety devices to avoid the accidental loss or unlocking of the pin, e.g. chains attaching the pin to the prop
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D15/24—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with axial screw-and-nut, rack-and-worm, or like mechanism

Landscapes

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

Abstract

622,131. Adjustable metal props. ACROW (ENGINEERS), Ltd., and CLARK, J. A. Oct. 22, 1946, No. 31344. [Class 20(ii)] Two telescopic members a, d are approximately adjusted to position by means of a pin e passing through slots a3 in the outer member a and spaced holes d<SP>1</SP> in the inner member d, final adjustment being effected by a nut b engaging the threaded portion a<SP>2</SP> of the outer member a and bearing against the projecting ends of the pin e. The nut b is formed with a depending sleeve f covering the threaded portion a<SP>2</SP> below the nut while an upper sleeve g riding on the nut b is provided with openended slots or holes g<SP>1</SP> for passage of the pin e and covers the threaded portion a<SP>2</SP> above the nut.
GB31344/46A 1946-10-22 1946-10-22 Improvements in adjustable metal props Expired GB622131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB31344/46A GB622131A (en) 1946-10-22 1946-10-22 Improvements in adjustable metal props

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31344/46A GB622131A (en) 1946-10-22 1946-10-22 Improvements in adjustable metal props

Publications (1)

Publication Number Publication Date
GB622131A true GB622131A (en) 1949-04-27

Family

ID=10321724

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31344/46A Expired GB622131A (en) 1946-10-22 1946-10-22 Improvements in adjustable metal props

Country Status (1)

Country Link
GB (1) GB622131A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318089A1 (en) * 1987-11-20 1989-05-31 Altrex B.V. Coupling device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318089A1 (en) * 1987-11-20 1989-05-31 Altrex B.V. Coupling device

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