Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1976-06-11
1977-05-10
Moon, Charlie T.
Metal working
Method of mechanical manufacture
With testing or indicating
29445, 101 9313, 156659, 156664, 219121EB, B23Q 1700
Patent
active
040219062
ABSTRACT:
A thin heat-treated steel sheet material having marginal zones formed along four edges thereof is photo-etched to produce printing types and the like which are integral with the sheet material. The reverse side thereof is also slightly photo-etched for removing and equalizing the strains on both side surfaces of the sheet. The transverse marginal zones are utilized for successive welding and trimming operations. The welding of the longitudinal edges of the sheet material for making the material into an endless form and its temper is made by subjecting said edges to primary and secondary electron beams.
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patent: R17805 (1930-09-01), Sadtler
patent: 1094299 (1914-04-01), Brown
patent: 1565583 (1925-12-01), Moore
patent: 1852115 (1932-04-01), Haggerty et al.
patent: 2754606 (1956-07-01), Williams
patent: 2762297 (1956-09-01), Baer
patent: 2896312 (1959-07-01), Schell
patent: 3279050 (1966-10-01), Simich
patent: 3431627 (1969-03-01), Fields
patent: 3436515 (1969-04-01), Sayer et al.
patent: 3763544 (1973-10-01), Gibson
Kyuroku Kabushiki-Kaisha
Moon Charlie T.
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