Rock drill equipment having a mechanized drill bit exchange

Details Rock drill equipment having a mechanized drill bit exchange Rock drill equipment having a mechanized drill bit exchange

1975-01-30

1976-08-24

Purser, Ernset R.

Boring or penetrating the earth

With magazine for successively moving unconnected, oriented...

175 85, 173 46, 211 15, 211 69, E21C 1904

Patent

active

039761495

ABSTRACT:
At a rock drill, preferably most forwardly on its frame, a magazine with drill bits is arranged. When a drill bit has been worn such that it must be exchanged, the drill rod is retracted so much that the worn drill bit arrives at the magazine. By special means at the magazine the worn bit is unscrewed from the rod and replaced by a new bit from the magazine.

REFERENCES:
patent: 2781185 (1957-02-01), Robbins
patent: 2878700 (1959-03-01), Reynolds
patent: 2889137 (1959-06-01), Walker
patent: 2909288 (1959-10-01), Boudette
patent: 3286777 (1966-11-01), Gyongyosi
patent: 3541900 (1970-11-01), Mosier
patent: 3921225 (1966-12-01), Foran
patent: R28371 (1975-03-01), Van Winkle

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