GB635151A - Improvements in or relating to a process for the manufacture of conduits and conduits manufactured according to said process - Google Patents
Improvements in or relating to a process for the manufacture of conduits and conduits manufactured according to said processInfo
- Publication number
- GB635151A GB635151A GB18184/47A GB1818447A GB635151A GB 635151 A GB635151 A GB 635151A GB 18184/47 A GB18184/47 A GB 18184/47A GB 1818447 A GB1818447 A GB 1818447A GB 635151 A GB635151 A GB 635151A
- Authority
- GB
- United Kingdom
- Prior art keywords
- edges
- conduits
- slab
- guides
- wires
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
635,151. Conduits. DIMMENDAAL, J. J. July 9, 1947, No. 18184 and 18185. Convention dates, March 10, 1943. [Class 33] [Also in Groups XXVIII and XXXVI] In a process for the manufacture of conduits from wire-armoured asbestos or fibrous-cement, the conduit is made from hardened prefabricated slabs first formed to the desired dimensions, after which the armouring 1, Fig. 3, is laid bare at the edges, the projecting wires of two adjacent slabs being then connected, e.g., by welding or twisting as at 14, Fig. 6, and the corner seams then filled with mortar. A bitumen cord 2 or 20, or other packing cord, is laid in the space between the inner edges of the slab and the wires prior to joining them. A slab 5; Fig. 4, may have fibrous material removed on opposite sides to form grooves 6, where the exposed wires may be bent as required, the exposed ends of the wires from the slab 5 and the base slab 7 being twisted together and the seams so formed packed as above. By having transverse joints 4 formed as above any length of conduit can be obtained. Slabs may be joined by fitting U-shaped guides 15, 16, Fig. 6, round their edges, the outside legs of said guides enabling sliding angled borders 17, e.g., of sheet iron, with edges bent to form channels 19, 18 to be placed over said guides. Two adjacent borders may be so shaped as to be telescopic. The bent edges of the borders may have recesses so that they can be placed around an edge by first bringing the recesses in front of the projecting guides and then sliding each border over a predetermined distance. The Specification as open to inspection under Sect. 91 comprises also (1) the use of cement in place of mortar for the joints, and (2) the omission of the packing cord. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL635151X | 1943-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB635151A true GB635151A (en) | 1950-04-05 |
Family
ID=19788866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18184/47A Expired GB635151A (en) | 1943-03-10 | 1947-07-09 | Improvements in or relating to a process for the manufacture of conduits and conduits manufactured according to said process |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB635151A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0246347A1 (en) * | 1986-05-22 | 1987-11-25 | Wolfgang Nohlen | Method and apparatus for making vessels open at at least one end of cement, for instance of cement mortar and a reinforcement |
US5473114A (en) * | 1993-04-14 | 1995-12-05 | Mosler, Inc. | Clear tube section for pneumatic transport tube system |
-
1947
- 1947-07-09 GB GB18184/47A patent/GB635151A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0246347A1 (en) * | 1986-05-22 | 1987-11-25 | Wolfgang Nohlen | Method and apparatus for making vessels open at at least one end of cement, for instance of cement mortar and a reinforcement |
US5473114A (en) * | 1993-04-14 | 1995-12-05 | Mosler, Inc. | Clear tube section for pneumatic transport tube system |
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