GB320629A - Improvements in collapsible cores for use in moulding concrete and like materials - Google Patents
Improvements in collapsible cores for use in moulding concrete and like materialsInfo
- Publication number
- GB320629A GB320629A GB2976029A GB2976029A GB320629A GB 320629 A GB320629 A GB 320629A GB 2976029 A GB2976029 A GB 2976029A GB 2976029 A GB2976029 A GB 2976029A GB 320629 A GB320629 A GB 320629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bars
- cores
- core
- bar
- engage
- 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
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
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/063—Re-usable forms
- E04G15/065—Re-usable forms with mechanical means to modify the section
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
320,629. Kuert, I. J. April 12, 1928. Divided on 317,337, [Class 20 (ii), Buildings and structures, Miscellaneous accessories &c.]. Cores.-Collapsable cores for forming holes in concrete and like materials consist of four angular metal walls 132, angle bars 140, 150, and a central operating bar 155 actuated by a handle 165 and provided with wedges 156 which engage wedges 152 on the bars 150 to vary the width of the core, and inclined slots 160 which engage crossbars 141 to vary the thickness of the core. Flat or other springs 142 tend to collapse the core. Auxiliary bars 176, slotted similarly to the bar 155, also engage, the bars 141 and are connected by a crossbar 175 to the bar 155. The width of the core may be increased by flat plates placed between the overlapping edges of the walls 132. Fig. 9 shows a modified central bar consisting of two members 190 connected by crossed links 191. Several cores may be joined end to end by chains 182 attached to the bars 155, 176 so that the cores' are collapsed in succession.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2976029A GB320629A (en) | 1928-04-12 | 1928-04-12 | Improvements in collapsible cores for use in moulding concrete and like materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2976029A GB320629A (en) | 1928-04-12 | 1928-04-12 | Improvements in collapsible cores for use in moulding concrete and like materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB320629A true GB320629A (en) | 1929-10-14 |
Family
ID=10296733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2976029A Expired GB320629A (en) | 1928-04-12 | 1928-04-12 | Improvements in collapsible cores for use in moulding concrete and like materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB320629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2213093A (en) * | 1985-08-15 | 1989-08-09 | Oldham Seals Ltd | A mandrel |
-
1928
- 1928-04-12 GB GB2976029A patent/GB320629A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2213093A (en) * | 1985-08-15 | 1989-08-09 | Oldham Seals Ltd | A mandrel |
| GB2213093B (en) * | 1985-08-15 | 1990-03-21 | Oldham Seals Ltd | A mandrel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES423836A1 (en) | Collapsible seat structures | |
| US3327986A (en) | Concrete form systems and hardware useful therewith | |
| GB320629A (en) | Improvements in collapsible cores for use in moulding concrete and like materials | |
| US2116301A (en) | Building toy | |
| US1552913A (en) | Building form | |
| US2451112A (en) | Folding concrete form | |
| US3436053A (en) | Apparatus for use in forms for concrete | |
| GB509502A (en) | Improvements in or relating to scaffolding or like temporary structures | |
| GB542919A (en) | Improvements in or relating to collapsible cores for use in the moulding of concrete structures or bodies | |
| GB647412A (en) | Improvements in or relating to collapsible cores for casting concrete or the like | |
| GB169762A (en) | Improvements in and relating to the building of concrete structures | |
| GB638844A (en) | Improvements in steel trestles | |
| US1118630A (en) | Form for making concrete arches. | |
| GB720603A (en) | Builders' planks | |
| SU467167A1 (en) | Volume-transformable scaffolding for finishing and repair work | |
| US1403823A (en) | Mold core for monolithic concrete walls | |
| GB239443A (en) | Improvements in shuttering-clamps for concrete work | |
| GB184050A (en) | Improvements relating to reinforcements for use in floor slabs, roads and the like | |
| GB263257A (en) | Improvements in or relating to the construction of concrete walls and buildings | |
| GB259246A (en) | Improvements in or relating to demountable structures | |
| GB616930A (en) | Improvements in or relating to core for forming holes in cast concrete or like slabsor components | |
| GB326678A (en) | Improvements in the construction of fireproof buildings | |
| ES96081A1 (en) | Improvements in reinforced concrete beams, posts and the like. | |
| ES197983A1 (en) | IMPROVEMENTS IN THE REINFORCEMENT ELEMENTS FOR CONCRETE, AND PARTICULARLY FOR PRESTRESSED CONCRETE | |
| GB567902A (en) | Improvements in graving or basin dry dock |