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Sherard Osborn Cowper-Coles
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Publication of GB190712005ApublicationCriticalpatent/GB190712005A/en
12,005. Coles, S. O. Cowper-. May 23. Reflectors are made with a surface partly white and partly yellow. The reflector is first electroplated with copper, preferably by the process described in Specification No. 26,616, A.D. 1896, [Abridgment Class Philosophical Instruments], and then in concentric bands or rings with silver and gold or other white and yellow metal or alloy. According to another method, a copper or brass reflector is subjected to the action of zinc vapour in the manner described in Specification No. 12,452, A.D. 1906, [Abridgment Class Ornamenting], or to any other suitable process, so as to convert certain portions of the reflector into zinc and others into golden-coloured brass. These reflectors may be highly polished in any ordinary manner.
GB190712005D1907-05-231907-05-23Improvements in the Manufacture of Reflectors.
ExpiredGB190712005A
(en)
INDUSTRIAL PROCESS FOR THE MANUFACTURE OF JEWELRY, ESPECIALLY RINGS WITH SET STONES, PREFERABLY OF PRECIOUS METAL, DEVICE FOR CARRYING OUT THIS PROCESS AND THE OBTAINED JEWELRY.
Process for the manufacture of a semi-finished product for light engineering purposes, a semi-finished product for light engineering purposes, and equipment for the production of the same