Title: Longwall cutting machines with drum moved by plural power means

Abstract: This invention relates to a mineral-cutting machine, the overall length of which can be substantially reduced, comprising a body and a ranging arm mounted for pivotal movement with respect to the body. A cutting device is supported on the ranging arm for rotation about an axis extending away from the ranging arm in a direction transverse to the intended direction of movement of the machine during a cutting operation. The cutting device is normally in a position at least partly beyond an end of the body during a cutting operation, and means are provided for moving the cutting device from said normal position at least partly beyond an end of the body to a position where it is at least substantially wholly alongside of the body.

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Inventors: Barr, Thomas G. (Malvern, GB)

Application Number: 009811
Filing Date: 1979-02-06
Publication_date: 1980-09-23
Assignee: Dowty Meco Limited (Worcester, GB2)
Primary Class(es): 299/54 299/42
Other Classes:
US Patent Ref:

3418023	Dec, 1968	Webster	299/51.
4027918	Jun, 1977	Hujimori	299/53.

Other Refs: 2425828

Nov, 1975	DE

Primary Examiner: Purser, Ernest R.
Assistant Examiner:
Attorney: Young & Thompson