Process for manufacturing of a lost casing from modular frames

Details Process for manufacturing of a lost casing from modular frames Process for manufacturing of a lost casing from modular frames

1989-06-29

1991-09-24

Gorski, Joseph M.

Metal working

Method of mechanical manufacture

Assembling or joining

29423, 52437, 52731, 249 10, 249 44, 249144, 405232, B23P 1904, E02D 700

Patent

active

050502905

ABSTRACT:
A method is disclosed for manufacturing a double-walled hollow lost casing for use in the production of marine engineering civil works having inner and outer walls each made of pre-cut plates of such size and shape that the lost casing has a polygonal cross-section throughout its height. The method includes the steps of assembling a jig by interconnecting a plurality of standard frames stacked upon each other to a desired height which together present an outer surface generally corresponding to a wall of a lost casing to be produced, assembling on and releasably attaching the pre-cut plates to the outer surface of the jig and seamlessly joining the assembled plates, and then releasing the completed wall from the jig. The inner and outer walls of the casing can, if desired, be made on separated jigs, with the completed outer wall lifted from its jig and lowered over a completed inner wall, or the plates of the outer wall may be assembled on a completed inner wall, with the completed double-wall casing then lifted from the jig on which the inner wall was assembled.

REFERENCES:
patent: 1137601 (1915-04-01), Gallo
patent: 1967490 (1934-07-01), White
patent: 3071837 (1963-01-01), Cerutti
patent: 3849996 (1974-11-01), Mittleman
patent: 4014177 (1977-03-01), Jarlan
patent: 4018057 (1977-04-01), Erzen et al.
patent: 4427320 (1984-01-01), Bhula
patent: 4648752 (1987-03-01), Guy et al.
patent: 4824290 (1989-04-01), Masoudi

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