Metal working – Bias cutting of tubular stock
Patent
1979-05-04
1981-12-15
Culver, Horace M.
Metal working
Bias cutting of tubular stock
29 61, 29 62, B21D 3104, H01M 3504
Patent
active
043051871
ABSTRACT:
In method and apparatus for making continuous strips for lead acid batteries, a strip of lead is advanced through a plurality of successive stations such that zigzag slits are formed on the strip, either in a direction parallel to the longitudinal axis or inclined to the longitudinal axis of the strip, between belt-shaped unslitted edge portions and a central unslitted portion. The strip is then stretched by application of a continuous force substantially simultaneously to the entire width of the slit portion of the strip by successively larger vertical components normal to the plane of the strip between both unslitted edge portions and the central unslitted portion. Simultaneously therewith, frictional resistance is applied to the zigzag slits so that the strip forms a substantially V-shaped cross-section vertical to the advancing direction of the strip to form the grid cells. The V-shaped strip is then leveled and flattened.
REFERENCES:
patent: 1578365 (1926-03-01), Redding
patent: 1972179 (1934-09-01), Baker
patent: 2989145 (1961-06-01), Goodloe
patent: 3276096 (1966-10-01), McAleer et al.
patent: 3867200 (1975-02-01), Daniels, Jr.
patent: 4102024 (1978-07-01), Badger et al.
Ikeda Seiichiro
Iwamura Takahiro
Culver Horace M.
Yuasa Battery Company Limited
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