GB2256022A - Locking device for square-section tubing - Google Patents

Locking device for square-section tubing Download PDF

Info

Publication number
GB2256022A
GB2256022A GB9110780A GB9110780A GB2256022A GB 2256022 A GB2256022 A GB 2256022A GB 9110780 A GB9110780 A GB 9110780A GB 9110780 A GB9110780 A GB 9110780A GB 2256022 A GB2256022 A GB 2256022A
Authority
GB
United Kingdom
Prior art keywords
tube
square
locking device
section
edge
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.)
Withdrawn
Application number
GB9110780A
Other versions
GB9110780D0 (en
Inventor
Christopher Frank Meadowcroft
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.)
VELDEN ENGINEERING
Original Assignee
VELDEN ENGINEERING
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 VELDEN ENGINEERING filed Critical VELDEN ENGINEERING
Priority to GB9110780A priority Critical patent/GB2256022A/en
Publication of GB9110780D0 publication Critical patent/GB9110780D0/en
Publication of GB2256022A publication Critical patent/GB2256022A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1472—Telescoping systems locking in intermediate non-discrete positions with a clamping screw perpendicular to the axis of the telescoping members
    • 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
    • E04G25/08—Shores or struts; Chocks telescopic with parts held relatively to each other by friction or gripping

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

A square-section tube is rigidly secured against two inside faces of a similar but larger tube by the application of a force applied to one edge of the inner tube and acting towards the diagonally opposite edge. As shown, a bolt 4 is tightened using a handle 5. <IMAGE>

Description

LOCKING DEVICE FOR SQUARE-SECTION TUBING This invention relates to a means of rigidly locking one piece of square-section tubing within the centre void of a larger piece of such tubing.
The locking of one square-section tube in a similar but larger tube has applications to temporary or adjustable fabrications.
Typically the locking action is achieved by a screw which is tightened by hand and presses on one face of the inner tube.
The opposite face of the inner tube is thus caused to press against the inner wall of the outer tube.
Such a method of locking gives rise to two problems: firstly the inner tube may pivot about the point where the screw is applied; secondly the screw acts on a comparatively weak point of the inner tube and will tend to deform it if the screw is overtightened.
According to the present invention a square-section tube is rigidly secured against two inside faces of a similar but larger tube by the application of a force applied to one edge of the inner tube and acting towards the diagonally opposite edge.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 shows in perspective the two tubes held together.
Figure 2 illustrates in section the relative positions of the tubes and an example of the means by which a diagonal force may be applied.
Referring to the drawings, the inner tube 1 is held against two inside faces of the outer tube 2. The holding force is provided by a bolt 4 which is tightened by hand using handle 5.
The bolt passes through a clearance hole in the edge of the outer tube, tightening against a bush 3 which is welded to the outer tube. A flat has been ground on the edge of the inner tube to accommodate the blunt end of the bolt.

Claims (3)

  1. LOCKING DEVICE FOR SQUARE-SECTION TUBING 1. A means of rigidly securing a square-section tube against two inside faces of a similar but larger tube by the application of a force applied to one edge of the inner tube and acting towards the diagonally opposite edge.
  2. 2. A means of rigidly securing a tube as claimed in Claim 1 wherein either or both tubes may be made of metal, plastic or any other material.
  3. 3. A means of rigidly securing a solid rod within a hollow tube by the means claimed in Claim 1, wherein either the rod or tube or both may be made of metal, plastic or any other material.
GB9110780A 1991-05-18 1991-05-18 Locking device for square-section tubing Withdrawn GB2256022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9110780A GB2256022A (en) 1991-05-18 1991-05-18 Locking device for square-section tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9110780A GB2256022A (en) 1991-05-18 1991-05-18 Locking device for square-section tubing

Publications (2)

Publication Number Publication Date
GB9110780D0 GB9110780D0 (en) 1991-07-10
GB2256022A true GB2256022A (en) 1992-11-25

Family

ID=10695226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9110780A Withdrawn GB2256022A (en) 1991-05-18 1991-05-18 Locking device for square-section tubing

Country Status (1)

Country Link
GB (1) GB2256022A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242119A1 (en) * 1992-12-14 1994-06-16 Kettler Heinz Gmbh Telescoping pipe arrangement - has profiled region of inner and outer pipe, form fitting and pressed together via fixture device
DE29717668U1 (en) * 1997-10-02 1997-11-20 Fränzl, Robert, 84405 Dorfen Fixing link for the production of a screw connection
US8926215B2 (en) 2004-01-30 2015-01-06 Abb Oy Arrangement for securing switch control shaft to switch pipe shaft
EP4053358A1 (en) * 2021-03-04 2022-09-07 Worxsafe AB A telescopic edge protection post

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242119A1 (en) * 1992-12-14 1994-06-16 Kettler Heinz Gmbh Telescoping pipe arrangement - has profiled region of inner and outer pipe, form fitting and pressed together via fixture device
DE29717668U1 (en) * 1997-10-02 1997-11-20 Fränzl, Robert, 84405 Dorfen Fixing link for the production of a screw connection
US8926215B2 (en) 2004-01-30 2015-01-06 Abb Oy Arrangement for securing switch control shaft to switch pipe shaft
EP4053358A1 (en) * 2021-03-04 2022-09-07 Worxsafe AB A telescopic edge protection post
AU2022200481B2 (en) * 2021-03-04 2023-07-13 Worxsafe Ab A Telescopic Edge Protection Post
US11795725B2 (en) 2021-03-04 2023-10-24 Worxsafe Ab Telescopic edge protection post

Also Published As

Publication number Publication date
GB9110780D0 (en) 1991-07-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)