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US 3,966,258 AGranted
Mining boom linkage for separate sump and swing cutting
AssigneeJoy Manufacturing Company
InventorMatthew J. Dolecki
Life of this patent
Estimating the term…
Abstract
An underground mining apparatus and more particularly an underground mining apparatus having a disintegrating head portion thereof carried by an improved pivotal linkage arrangement.
Claims8
A mining machine comprising:
- an elongated main support;
- a cutter head support assembly including link means and an elongated rigid boom member;
- said link means being pivotally connected to said main support about a first axis fixed with respect to said main support;
- said boom member having one end portion pivotally connected to said link means about a second axis parallel to said first axis;
- a cutter head carried by said boom member on the free end thereof opposite said one end portion;
- said cutter head having an axis of rotation extending transversely of said boom member and having a length along said axis of rotation greater than the width of said main support;
- and actuator means communicating between said main support and said cutter head support assembly for selectively pivoting said cutter head support assembly about said first axis and for selectively pivoting said boom about said second axis.
4 more elements
Dependencies are inferred from the claim text.