Metal working – Method of mechanical manufacture – Electrical device making
Patent
1981-04-20
1982-12-21
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
219 60A, 228 41, 228 441A, 228 7, H01B 1320
Patent
active
043641717
ABSTRACT:
The method includes aligning a first plurality of cylindrical workpieces of a first diameter such that the longitudinal axes thereof are substantially coincident and welding the workpieces together end-to-end to form a cylindrical member of a desired length. The welding step includes rotating the workpieces about their longitudinal axes while maintaining a welding electrode at a fixed position along the workpieces and at a fixed distance from the outer circumference of the workpieces. The method includes cutting openings in the cylindrical member wherein the cylindrical member is rotated about its longitudinal axis while causing a cutting means to move linearly along the length of the cylindrical member. In one embodiment, the method is repeated with a second plurality of cylindrical workpieces of a greater diameter with some of the steps in processing the first and second plurality of workpieces being carried out at substantially the same time. Other forms of the apparatus and method are disclosed.
REFERENCES:
patent: 3291962 (1966-12-01), Walker
patent: 3444351 (1969-05-01), Stehle et al.
patent: 4014495 (1977-03-01), Oda et al.
patent: 4052039 (1977-10-01), Koyano et al.
patent: 4054771 (1977-10-01), Foulquier et al.
Arbes Carl J.
Canadian General Electric Company Limited
Eckersley Raymond A.
Hall Carl E.
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