GB2126640A - Drop-head support assembly with adjustable head-plate - Google Patents
Drop-head support assembly with adjustable head-plate Download PDFInfo
- Publication number
- GB2126640A GB2126640A GB08225802A GB8225802A GB2126640A GB 2126640 A GB2126640 A GB 2126640A GB 08225802 A GB08225802 A GB 08225802A GB 8225802 A GB8225802 A GB 8225802A GB 2126640 A GB2126640 A GB 2126640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drop
- head
- support assembly
- head support
- plate
- 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- Withdrawn
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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/483—Supporting heads
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
Head-plate 24 is mounted on the assembly so that it can be rotated between limits (e.g. by 5 DEG ) about the longitudinal axis of the assembly. This enables mis-alignment of heat-plate 23 with support-plate 16 to be obviated. <IMAGE>
Description
SPECIFICATION
Improvements in drop-head support assemblies
The invention relates to drop-head support assemblies for use in the construction of concrete roofs, floors, ceilings and the like.
Our British Patent Specification No. 1551100 describes a drop-head support assembly having a detachable head plate. The head plate is secured in place by bolting directly to a web plate of the support assembly. Direct bolting in this way means that the position of the head plate cannot be adjusted with respect to the drop-head assembly once bolted in place, and due to manufacturing tolerances and slight inaccuracies, the head plate can finish up in a position out of a desired alignment with the drop-head support assembly.
According to the invention there is provided a drop-head support assembly for attachment either directly or indirectly to a prop or the like, a head plate and means for captively mounting the head plate on the drop-head assembly, the captive mounting means allowing rotational adjustment of the head plate relative to the drop-head assembly between predetermined limits.
The head plate is preferably rotatabie through an angle of 50 about the longitudinal axis of the drop-head support assembly.
The head plate is preferably detachably mounted on the drop-head support assembly.
The means for mounting the head plate on the drop-head support assembly preferably comprises a pair of spaced apart, parallel flanges on one of the head plate and the drop-head support assembly and a web on the other of the head plate and the drop-head support assembly, the web being engageable between the flanges and having a thickness less than the spacing between the flanges to allow said rotational adjustment, and means for captively retaining the flanges and web in mutual engagement.
The retaining means preferably comprises a nut and bolt mounted on whichever of the flanges and web are on the head plate and engaging whichever of the flanges and web are on the drop-head support assembly at an edge or edges thereof remote from the head plate.
The nut is preferably secured to one of the flanges or the web, and the bolt is preferably captively retained on the nut.
The flanges are preferably on the head plate and the web on the drop-head support assembly.
By way of example, one embodiment of a drophead support assembly according to the invention will now be described with reference to the accompanying drawings, in which: Fig. 1 is a plan view of part of a drop-head support assembly having a head plate rigidly secured to the assembly;
Fig. 2 is a side view of a head plate assembly of a drop-head support assembly according to the invention;
Fig. 3 is a sectional view along the lines Il-Il in Fig. 2; and
Fig. 4 shows the head plate assembly of Figs. 2 and 3 detached from the drop-head support assembly.
Our British Patent Specification No. 1551100 describes an improved drop-head support assembly. The matter contained in Specification No. 1 551100 is imported herein by way of reference and all matter contained in
Specification No. 1 551100 is to be considered part of this specification.
It will be appreciated that the current invention is not limited to the particular drop-head support assembly described and claimed in our
Specification No. 1 551100.
Specification No. 1 5511 00 describes a drophead support assembly having a head-plate 23 detachably mounted thereon, the head plate 23 being rigidly attached to a web plate 10 by means of a nut and bolt. It has been found that, due to manufacturing tolerances and slight inaccuracies, the head plate can finish up misaligned with a support member 1 6 of the drop-head support assembly. Fig. 1 illustrates in chain lines how the head plate 23 can be misaligned with support plate 16.
For the sake of convenience, reference numeral 16 for the support plate, reference numeral 23 for the head plate, reference numeral 24 for a transverse plate of the head plate 23 and reference numeral 2 for flanges of the drop-head support assembly will be used in this specification to correspond to the reference numerals of
Specification No.1551100.
Between the parallel flanges 2 of the drophead support assembly, extends a web 50 which can be seen best in Fig. 3. Extending downwardly from the plate 24 are two parallel flanges 51, 52 defining between them a channel adapted to be engaged by the web 50. The spacing between the flanges 51 and 52 is wide enough to allow some free play between the web 50 and flanges 51 and 52.
The flanges 51 and 52 are supported by wings 53, 54, 55, and 56.
To retain the head plate assembly 23 on the web 50, a nut 57 is welded to the flange 51, the set screw 58 is retained captively on the nut 57, the set screw 58 being movable between a first position (Fig. 3) in which the flange 52 is engaged by the set screw and a second position (Fig. 4) in which the channel defined by the flanges 51 and 52 is open to allow the head plate assembly 23 to be slid over the web 50. The head of the set screw is preferably a B.S.W. hexagon bolt in order to accept a normal box spanner used by scaffolders. This has the advantage that no special tools are required for attaching and detaching the head plate assembly.
The free plate between the web 50 and the flanges 51 and 52 allows limited rotational adjustment of the head plate assembly 23 over an angle up to about 5 and this amount of adjustment is sufficient to be able to align the plate 24 with the support member 16 of the drop head support assembly. Too much free play for the head plate assembly would clearly be undesirable.
It will be appreciated that many alternative ways exist of retaining the head plate assembly captive on the web 50, for example with split cotter pins or spring clips, but the use of a captive nut and bolt has the advantage that the nut and bolt are unable to be separated from the head plate assembly.
Claims (Filed on 12.8.83)
1. A drop-head support assembly for attachment either directly or indirectly to a prop or the like, a head plate and means for captively mounting the head plate on the drop-head assembly, the captive mounting means allowing rotational adjustment of the head plate relative to the drop-head assembly between predetermined limits.
2. A drop-head support assembly as claimed in Claim 1 wherein the head plate is rotatable through an angle of 5 about the longitudinal axis of the drop-head support assembly.
3. A drop-head support assembly as claimed in
Claim 1 or Claim 2 wherein the head plate is detachably mounted on the drop-head support assembly.
4. A drop-head support assembly as claimed in any preceding Claim wherein the means for mounting the head plate on the drop-head support assembly comprises a pair of spaced apart, parallel flanges on one of the head plate and the drop-head support assembly and a web on the other of the head plate and the drop-head support assembly, the web being engageable between the flanges and having a thickness less than the spacing between the flanges to allow said rotational adjustment, and means for captively retaining the flanges and web in mutual engagement.
5. A drop-head support assembly as claimed in
Claim 4 wherein the retaining means comprises a nut and bolt mounted on whichever of the flanges and web are on the head plate and engaging whichever of the flanges and web are on the drop-head support assembly at an edge or edges thereof remote from the head plate.
6. A drop-head support assembly as claimed in
Claim 4 or Claim 5 wherein the nut is secured to one of the flanges or the web.
7. A drop-head support assembly as claimed in
Claim 5 or Claim 6 as dependent on Claim 5 wherein the bolt is captively retained on the nut.
8. A drop-head support assembly as claimed in any one of Claims 4 to 7 wherein the flanges are on the head plate and the web on the drop-head support assembly.
9. A drop-head support assembly substantially as hereinbefore described with reference to the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (9)
1. A drop-head support assembly for attachment either directly or indirectly to a prop or the like, a head plate and means for captively mounting the head plate on the drop-head assembly, the captive mounting means allowing rotational adjustment of the head plate relative to the drop-head assembly between predetermined limits.
2. A drop-head support assembly as claimed in Claim 1 wherein the head plate is rotatable through an angle of 5 about the longitudinal axis of the drop-head support assembly.
3. A drop-head support assembly as claimed in
Claim 1 or Claim 2 wherein the head plate is detachably mounted on the drop-head support assembly.
4. A drop-head support assembly as claimed in any preceding Claim wherein the means for mounting the head plate on the drop-head support assembly comprises a pair of spaced apart, parallel flanges on one of the head plate and the drop-head support assembly and a web on the other of the head plate and the drop-head support assembly, the web being engageable between the flanges and having a thickness less than the spacing between the flanges to allow said rotational adjustment, and means for captively retaining the flanges and web in mutual engagement.
5. A drop-head support assembly as claimed in
Claim 4 wherein the retaining means comprises a nut and bolt mounted on whichever of the flanges and web are on the head plate and engaging whichever of the flanges and web are on the drop-head support assembly at an edge or edges thereof remote from the head plate.
6. A drop-head support assembly as claimed in
Claim 4 or Claim 5 wherein the nut is secured to one of the flanges or the web.
7. A drop-head support assembly as claimed in
Claim 5 or Claim 6 as dependent on Claim 5 wherein the bolt is captively retained on the nut.
8. A drop-head support assembly as claimed in any one of Claims 4 to 7 wherein the flanges are on the head plate and the web on the drop-head support assembly.
9. A drop-head support assembly substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08225802A GB2126640A (en) | 1982-09-09 | 1982-09-09 | Drop-head support assembly with adjustable head-plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08225802A GB2126640A (en) | 1982-09-09 | 1982-09-09 | Drop-head support assembly with adjustable head-plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2126640A true GB2126640A (en) | 1984-03-28 |
Family
ID=10532821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08225802A Withdrawn GB2126640A (en) | 1982-09-09 | 1982-09-09 | Drop-head support assembly with adjustable head-plate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2126640A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779552A (en) * | 1953-09-14 | 1957-07-24 | Becorit Grubenausbau Gmbh | Improvements in or relating to pit props |
| GB779466A (en) * | 1955-05-05 | 1957-07-24 | Gerlach Karl | Metal pit prop |
| GB807462A (en) * | 1954-05-08 | 1959-01-14 | Gerlach Karl | Metallic pit prop |
| GB813276A (en) * | 1955-07-15 | 1959-05-13 | Ewald Wilhelm Wiemann | Improvements in telescopic pit props |
| GB931103A (en) * | 1960-10-18 | 1963-07-10 | Floating Floors Inc | Adjustable pedestal for elevated sectional floors |
| GB1115902A (en) * | 1963-12-02 | 1968-06-06 | Palmer S Travelling Cradle & S | Improvements in or relating to adjustable props |
| GB1187586A (en) * | 1966-09-09 | 1970-04-08 | Tubeclamps Ltd | Improvements in or relating to Adjustable Props for use in Building and other Construction |
| GB1364979A (en) * | 1971-03-05 | 1974-08-29 | Kloeckner Werke Ag | Detachable connection between a prop head and a cap therefor |
-
1982
- 1982-09-09 GB GB08225802A patent/GB2126640A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779552A (en) * | 1953-09-14 | 1957-07-24 | Becorit Grubenausbau Gmbh | Improvements in or relating to pit props |
| GB807462A (en) * | 1954-05-08 | 1959-01-14 | Gerlach Karl | Metallic pit prop |
| GB779466A (en) * | 1955-05-05 | 1957-07-24 | Gerlach Karl | Metal pit prop |
| GB813276A (en) * | 1955-07-15 | 1959-05-13 | Ewald Wilhelm Wiemann | Improvements in telescopic pit props |
| GB931103A (en) * | 1960-10-18 | 1963-07-10 | Floating Floors Inc | Adjustable pedestal for elevated sectional floors |
| GB1115902A (en) * | 1963-12-02 | 1968-06-06 | Palmer S Travelling Cradle & S | Improvements in or relating to adjustable props |
| GB1187586A (en) * | 1966-09-09 | 1970-04-08 | Tubeclamps Ltd | Improvements in or relating to Adjustable Props for use in Building and other Construction |
| GB1364979A (en) * | 1971-03-05 | 1974-08-29 | Kloeckner Werke Ag | Detachable connection between a prop head and a cap therefor |
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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) |