Variable length conveyor assembly

Details Variable length conveyor assembly Variable length conveyor assembly

1981-12-02

1984-10-02

Spar, Robert J.

Conveyors: power-driven

Conveyor section

Endless conveyor

198830, B65G 2114

Patent

active

044742878

ABSTRACT:
A variable length conveyor assembly for use in the continuous underground mining of coal. The conveyor assembly comprises a base from which are adapted to extend a plurality of telescoping support elements. The support elements carry belt supporting members at the upper surfaces thereof and a plurality of longitudinal supports at the side surfaces thereof. The longitudinal supports, in turn, carry a plurality of rollers. An endless belt is supported by the belt supporting members and the rollers. Drive elements are located in the base for the endless belt. Cable rollers are associated with the support elements for purposes of receiving a control cable which is threaded through the cable rollers. Cable drive elements are positioned in the base which are adapted to move the control cable in a manner to selectively expand and contract the conveyor assembly. In alternate embodiments of the invention, the telescoping support elements are moved inwardly and outwardly by hydraulic rams or, alternately, chain drives.

REFERENCES:
patent: 2815849 (1957-12-01), Zumbrunnen
patent: 3402805 (1968-09-01), Spellman
patent: 3835980 (1974-09-01), Brooks

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