EP0136906B1 - Arch support device - Google Patents
Arch support device Download PDFInfo
- Publication number
- EP0136906B1 EP0136906B1 EP84306693A EP84306693A EP0136906B1 EP 0136906 B1 EP0136906 B1 EP 0136906B1 EP 84306693 A EP84306693 A EP 84306693A EP 84306693 A EP84306693 A EP 84306693A EP 0136906 B1 EP0136906 B1 EP 0136906B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hinge
- band
- struts
- supporting
- during construction
- 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
Links
Images
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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
- E04G21/1858—Templates for window or door openings, e.g. in a masonry wall
- E04G21/1866—Templates for window or door openings, e.g. in a masonry wall for making arches
Description
- This invention relates to a building arch support device and has been devised particularly though not solely as a modification of the arch support described in my Australian Patent No. 525,237.
- In arch supports of the type described in my Australian Patent 525,237 which are used to define the shape of an archway (for use when laying up bricks or laminating a timber beam for example), it has hitherto been necessary to provide a variety of different arch supports for use in forming arches of different configurations. Some arches have a smooth even curve across the entire arch, whereas other arches, such as a gothic arch, may have a peak or other places where the line of the arch makes an abrupt change in angle. This has been dealt with in the past by providing a number of different types of arch supports, one for each different type of arch required. This is, of course, expensive and it is desirable to provide a single arch support which may be used for arches of different configurations.
- It is therefore an object of the present invention to provide a modified arch support which will obviate or minimise the foregoing disadvantages, or go at least part of the way toward meeting the foregoing desiderata, in a simple yet effective manner, or which will at least provide the public with a useful choice.
- DE-A-2 334 020 shows a configuration (particularly at Figure 10) wherein this problem is dealt with by providing a hinge in a flexible arch support band which is in turn supported by a number of telescopic struts from a central locking hub.
- Accordingly the invention consists in a device for supporting an arch during construction operations, comprising a hub member, a plurality of struts pivotally connected to the hub member and extending away from the hub member in one plane and in respective directions independently capable of adjustment relative to one another and relative to the hub member, an elongate load support band connected to the outer ends of the struts and adapted to support a load between the struts, said band being sufficiently flexible to permit alteration of the shape of the band upon adjustment of the struts and incorporating at least one hinge enabling the band to bend sharply through a predetermined angle in the said plane at the location of the hinge, characterised in that the hinge is lockable to retain said predetermined angle at the hinge.
- Preferably said one or each lockable hinge is located in said band at the point of connection of the outer end of the strut to the band.
- Preferably the lockable hinge comprises first and second hinge leaf members interconnected by a hinge pin allowing relative rotational movement along the axis of the pin between said hinge leaf members, an abutment extending from said first leaf member, and clamping means extending from said second leaf member adapted to engage and clamp said abutment to prevent relative rotation of said leaf members about said hinge pin.
- Preferably said clamping means comprise two arms extending from said second leaf member on either side of said abutment and tension means adapted to draw said arms together to clamp said abutment therebetween.
- Preferably, said tension means comprise a bolt or stud extending between the free ends of said arms.
- Notwithstanding any other forms that may fall within its scope, one preferred form of the invention will now be described by way of example only with reference to the accompanying drawings in which:
- Fig. 1 is a side view of a lockable hinge incorporated in an arch support according to the invention;
- Fig. 2 is an end view on the arrow II of the construction shown in Fig. 1;
- Fig. 3 is a side view of an arch support according to the invention; and
- Fig. 4 is a similar view to Fig. 3 showing the arch support in an alternative configuration.
- In the preferred form of the invention, an arch support of the type described in my Australian Patent Specification 525,237 is constructed having a central hub or pin 1 (Fig. 3) from which radiate a plurality of
struts 2 all substantially located in one plane. Each strut is pivotally connected to the hub and is preferably telescopic or otherwise adjustable in length. The outer ends of the struts are connected to an elongateload supporting band 3 which is typically a strip of sheet steel. - In the form of arch support according to the invention, the
elongate band 3 is provided with a hinge 4 at at least one point in the elongate band so that the hinge may be pivoted through a desired angle to achieve arch configurations in which the elongate band is discontinuous in its curve in at least one location. A typical application is in the construction of a gothic arch as shown in Fig. 4 where the hinge 4 is located at the peak of the arch as can clearly be seen in Fig. 4. It is preferable although not essential that the hinge 4 be located at the free end of one of thestruts 2 and preferably of thecentral strut 5. - So that the same arch support may be used to provide a fair and even curve as shown in Fig. 3 or a discontinuous curve as shown in Fig. 4, it is necessary that the hinge 4 be able to be locked in a desired configuration.
- A typical example of such a lockable hinge will now be described with reference to Figures 1 and 2 of the accompanying drawings. The hinge comprises a
first leaf member 11 and asecond leaf member 12 which are typically formed by the ends of two segments of theelongate band 3. The two lead members are interconnected by ahinge pin 13 at right angles to the plane of the struts allowing relative rotational movement along the axis of the pin between thehinge lead members - The first leaf member is provided with an abutment 14 extending from the leaf member as shown in Fig. 1. The abutment may be in the form of a section of steel bar welded to the first leaf member at 15 but in the preferred form of the invention the abutment is formed from two
arms free ends 18 by apivot pin 19. - The
second leaf member 12 is provided with clamping means in the form of twoarms arms bolt 22 and correspondingnut 23 interconnecting theirfree ends 24 so that the nut and bolt may be tightened causing thearms bolt hinge pin 13 until the desired angle is reached. The nut and bolt are then tightened, clamping the abutment between thearms hinge pin 13. In this manner the desired angle for the hinge 4 may be preset in the elongateload supporting band 3. - It is preferred that the hinge 4 be located at the end of one of the
struts 2 and to this end thetypical strut 5 is pivotally engaged with the hinge by way of ahole 25 in one end of the strut engaging thepin 19 in the abutment 14. In this manner the end of thestrut 5 is pivotally connected to the lockable hinge. - Although the invention has been described by way of one. particular example with a single lockable hinge 4 at the centre or apex of the arch support, it will be appreciated that similar lockable hinges may be provided wherever else desired in the
elongate band 3. - In this manner a modified arch support is provided which enables a single arch support to be adapted by presetting the lockable hinge or hinges to give any desired configuration of arch.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84306693T ATE41462T1 (en) | 1983-10-05 | 1984-10-01 | DEVICE FOR AN ARC SUPPORT. |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU1706/83 | 1983-10-05 | ||
AUPG170683 | 1983-10-05 | ||
AU33510/84A AU579325B2 (en) | 1983-10-05 | 1984-09-25 | A modified arch support |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0136906A2 EP0136906A2 (en) | 1985-04-10 |
EP0136906A3 EP0136906A3 (en) | 1986-04-02 |
EP0136906B1 true EP0136906B1 (en) | 1989-03-15 |
Family
ID=25622525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84306693A Expired EP0136906B1 (en) | 1983-10-05 | 1984-10-01 | Arch support device |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0136906B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2405438A (en) * | 2003-08-28 | 2005-03-02 | Simon Bond | Arch forming device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE205103C (en) * | ||||
DE2334020A1 (en) * | 1973-07-04 | 1975-01-23 | Manfred Rupflin | Adjustable arched wall formwork - with flexible arch plate, slitted swivelling arms, tighteners, clamping screw and side plates |
AU525237B2 (en) * | 1980-04-21 | 1982-10-28 | Peter Robert Dominguez | Archway formwork |
-
1984
- 1984-10-01 EP EP84306693A patent/EP0136906B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0136906A3 (en) | 1986-04-02 |
EP0136906A2 (en) | 1985-04-10 |
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