Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1990-06-07
1992-05-05
Meislin, D. S.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51283E, 51281SF, 51323, 51326, 368232, 368234, B24B 100
Patent
active
051096358
ABSTRACT:
A method for manufacturing a glass watch dial made of "murrino" glass, said method comprising a phase for the axial drilling of the "murrina" disc, the hole resulting therefrom having a diameter to allow the passage of the watch-hand supporting shaft therethrough, one or more honing phases whereby the two surfaces of the "murrina" disc aare made to become parallel to each other, while the disc itself acquires a thickness which is compatible with its use as a watch dial, a phase for trimming of the outer edge of the "murrina" disc and a phase for polishing at least one of the two visible surfaces of the "murrina". The method achieves the manufacturing of watch dials by using "murrinas", i.e., objects constituted by a plurality of small glass cylinders melted together to form desired patterns.
REFERENCES:
patent: 744355 (1903-11-01), Kanstoroom
patent: 2196998 (1940-04-01), Lodge
patent: 3123953 (1964-03-01), Merkl
patent: 3488895 (1970-01-01), Thompson
patent: 3583110 (1971-06-01), Scott
patent: 3673746 (1972-07-01), Highberg
patent: 3793824 (1974-02-01), Simon-Vermot et al.
patent: 4964239 (1990-10-01), Gottschald et al.
Inzerillo Giuseppe
Nordio Franco
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