Supports – Machinery support – Movable machine
Patent
1978-12-20
1982-08-17
Foss, J. Franklin
Supports
Machinery support
Movable machine
173 28, 248654, F16M 100
Patent
active
043445993
ABSTRACT:
A rock drill boom structure comprises a support means, an elongated boom swingably carried by the support means and a feed beam on which a rock drill is mountable so as to be power displaceable therealong, the feed beam being carried by one end of the boom. The support means includes an elongated hollow guide means of substantially less longitudinal length than the boom and in which the boom is slidably received to project through both ends of the guide means, the boom being arrestable in the guide means, a rotatable member on which the guide means is pivotably mounted for pivotable movement about an axis transverse to the axis of rotation of the rotatable member, first power means for pivoting the guide means and second power means for rotating the rotatable member. The rotatable member 19 is preferably disc-shaped and has an aperture therein through which the power lines of the rock drill are drawn.
REFERENCES:
patent: 2903949 (1959-09-01), Simmonds
patent: 3454114 (1969-07-01), Poage
patent: 3490546 (1970-01-01), Hattrup et al.
patent: 3511320 (1970-05-01), Miller
patent: 3744574 (1973-07-01), Carley
patent: 3809169 (1974-05-01), Hunt
patent: 3823902 (1974-07-01), Bumueller
patent: 3896887 (1975-07-01), Council
patent: 3965628 (1976-06-01), Loftis
patent: 3992831 (1976-11-01), Bukovitz
patent: 4027448 (1977-06-01), Tymciurak
patent: 4108254 (1978-08-01), Johansson
Atlas Copco Aktiebolag
Foss J. Franklin
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