Combined milling and impact apparatus for tunneling

Details Combined milling and impact apparatus for tunneling Combined milling and impact apparatus for tunneling

1975-06-25

1976-12-21

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

299 18, 299 66, 299 70, 299 71, 299 75, 173 52, E21D 910

Patent

active

039984931

ABSTRACT:
A support displaceable along a tunnel or gallery floor by means of a caterpillar drive is provided with a rotatable milling tool that can be brought into engagement with a lower portion of a face wall and with a reciprocal hammer engageable with an upper portion of the wall. The miller is operated to cut or grind material off the lower portion so as to undercut the wall. Then the hammer is operated to chip or break off the upper portion of the undercut wall. Both the miller and hammer are mounted on adjustable and directable arms. The loosened rock is carried off by a scoop-transport belt arrangement.

REFERENCES:
patent: 1439666 (1922-12-01), Foss
patent: 2329875 (1943-09-01), Cartlidge
patent: 2531072 (1950-11-01), Merchant
patent: 2750178 (1956-06-01), McCallum
patent: 2980409 (1961-04-01), Goodrich
patent: 3064958 (1962-11-01), Osgood
patent: 3128998 (1964-04-01), Sibley

Affiliated with

Also associated with

Rating

Combined milling and impact apparatus for tunneling does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combined milling and impact apparatus for tunneling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined milling and impact apparatus for tunneling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1835748