Method of working for bending metal material and thereby obtaine

Details Method of working for bending metal material and thereby obtaine Method of working for bending metal material and thereby obtaine

1976-02-04

1978-01-31

Larson, Lowell A.

192 clutches and power-stop control

Elements

Engaging surfaces

72359, 72379, 192 702, B21D 5326

Patent

active

040711277

ABSTRACT:
When a metal piece is forced to undergo a 180.degree. bend with a press, in order that the outer end face of the bent portion be square rather than rounded, the portion to be bent is put in a die and buckled toward the folding line while bending is effected. Also a number of T-shaped projections radially extending from the outer periphery of an annular iron plate are formed with the lug portions of such projections bent so that the outer ends of the bent portions are formed flat.

REFERENCES:
patent: 1142782 (1915-06-01), Carlson
patent: 1403642 (1922-01-01), Sauvage et al.
patent: 2114247 (1938-04-01), Davis
patent: 2591108 (1952-04-01), Vigneault et al.
patent: 2636253 (1953-04-01), Rees
patent: 3218828 (1965-11-01), Thelander

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