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
GB13361/53A
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.)
Preload Co Inc
Original Assignee
Preload Co Inc
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 Preload Co IncfiledCriticalPreload Co Inc
Publication of GB732826ApublicationCriticalpatent/GB732826A/en
B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
B28B21/00—Methods or machines specially adapted for the production of tubular articles
B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
Chemical & Material Sciences
(AREA)
Ceramic Engineering
(AREA)
Mechanical Engineering
(AREA)
Manufacturing Of Tubular Articles Or Embedded Moulded Articles
(AREA)
Rod-Shaped Construction Members
(AREA)
Abstract
732,826. Prestressed concrete. PRELOAD CO., Inc. May 13, 1953 [May 14, 1952], No. 13361/53. Class 20 (4). [Also in Group V] In a method of moulding prestressed concrete articles, particularly pipes (see Group V), the forces of the tensioned wires forming the reinforcement are transferred to the moulded concrete only after it has cured and hardened. In the case of a pipe, Fig. 1, concrete 105 is built up round a cylinder 20 and embeds tensioned longitudinal wires 100, and is cured by allowing it to set and harden. Tensioned circumferential wire 106 is then wound on the hardened concrete throughout its length, and a covercoat 107 of concrete is applied over the wire 106 and cured by allowing it to set and harden. The forces due to the tensioned wires are then transferred from the moulding apparatus to the concrete by contracting the cylinder 20.
GB13361/53A1952-05-141953-05-13Method and apparatus for making prestressed concrete articles
ExpiredGB732826A
(en)
Procedure for the manufacture of compound pipes of precomprused cement, with tubular coating. (Machine-translation by Google Translate, not legally binding)