Method for coping I-beams

Details Method for coping I-beams Method for coping I-beams

Filed on

1977-11-03

Date issued

1978-12-12

Examiner

Stallard, W.

Patent Class

Metal treatment

SubClass

Compositions

SubSubClass

Heat treating

Other Related Categories

B23K 700

Type

Patent

Status

active

Patent number

041294602

Description

ABSTRACT:
Part of the upper flange at the end portion of an I-beam is removed therefrom by cutting through the flange with a plasma-arc torch, the torch also forming a vertical cut through the lower flange of the beam. Thereafter, a shearing punch shears through the web of the beam to remove the lower flange from the end portion of the beam. Because a portion of the upper flange is removed from the beam prior to the shearing operation, the punch does not engage any substantial part of the upper flange and thus the punch may effect shearing of the web along a line located in close proximity to the junction of the web and the flanges.

REFERENCES:
patent: 1901428 (1933-03-01), Anderson
patent: 2187731 (1940-01-01), Davis
patent: 2599324 (1952-06-01), Forkey
patent: 3908973 (1975-09-01), Martin

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