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 process

Info

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
Application number
GB18184/47A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB635151A publication Critical patent/GB635151A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/002Producing 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.
GB18184/47A 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 Expired GB635151A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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