Method and apparatus for controlling the steplessly variable cut

Details Method and apparatus for controlling the steplessly variable cut Method and apparatus for controlling the steplessly variable cut

1975-06-02

1976-10-26

Wise, Edward J.

Registers

Transfer mechanism

Traveling pawl

299 1, 173 7, 318 39, B23Q 528, G06G 766

Patent

active

039885780

ABSTRACT:
Method and apparatus for controlling a mining machine, specifically a longwall mining machine, of the type in which the mining machine is advanced into a mineral seam by an advancing motor and a rotating mineral-cutting element on the machine is driven by a cutter drive motor. The invention resides in the realization that the specific cutting work of the machine, which is the work required to mine and remove a given unit of mined material, can be minimized by minimizing the differential quotient: ##EQU1## WHERE: N.sub.Wa is the driving power of the cutter drive motor; and

REFERENCES:
patent: 3162249 (1964-12-01), Kuipers et al.
patent: 3211239 (1965-10-01), Hipple
patent: 3323839 (1967-06-01), Addison et al.
patent: 3378303 (1968-04-01), Weber
patent: 3400768 (1968-09-01), Kuipers et al.
patent: 3489461 (1970-01-01), Lauber
patent: 3633081 (1972-01-01), Weber et al.
patent: 3809870 (1974-05-01), Auble et al.
patent: 3839628 (1974-10-01), Higgins et al.

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