Method and device for holing

Details Method and device for holing Method and device for holing

1976-11-01

1978-05-09

Meister, J. M.

Cutting

Processes

Blanking

83554, 30358, 30361, 60567, B26F 134

Patent

active

040880486

ABSTRACT:
A method and a device for holing an oblong member, particularly a guard rail, substantially directly in front of a hole in a second member, particularly a pole, by utilizing a punching device comprising a punch and first and second pressure means with different ratios, of which the first means causes the punch to abut the oblong member, and the second means effects further movement of the punch to carry out holing in said member.

REFERENCES:
patent: 198176 (1877-12-01), Alexander
patent: 388977 (1888-09-01), Hulme
patent: 641175 (1900-01-01), Wigtel
patent: 840859 (1907-01-01), Morse
patent: 2032185 (1936-02-01), Sciaky
patent: 2443642 (1948-06-01), Rockwell

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