Process for obtaining composite hollow members from variegated l

Details Process for obtaining composite hollow members from variegated l Process for obtaining composite hollow members from variegated l

1986-03-26

1988-01-05

Spruill, Robert L.

Metal deforming

By tool-couple pressing together adjacent surface portions...

To form longitudinally-seamed tube

291606, 29514, 29521, 72368, B21G 3902, B23P 1500

Patent

active

047167505

ABSTRACT:
The invention relates to a process by means of which to obtain hollow members from variegated longitudinal strips, longitudinally assembled. The hollow member obtained may either remain hollow or be provided with a removable core, and can be embodied in precious or semi-precious metals, or their alloys; strips of such materials are utilized to make up the various components of the hollow member's nominal cross section, and the end-product is a new type of multi-colored semi-finished article for use in the manufacture of high-class and costume jewelry, as well as in other fields such as the production of objects of art and/or general interior design.

REFERENCES:
patent: 1168885 (1916-01-01), Holden
patent: 1386335 (1921-08-01), Hoffman
patent: 1461848 (1923-07-01), Jacquiery
patent: 1863873 (1932-06-01), Quarnstrom
patent: 3208140 (1965-09-01), Mayrath
patent: 3372563 (1968-03-01), Walsh
patent: 3864814 (1975-02-01), Bagge

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