Take-up for mining machine trim chain

Details Take-up for mining machine trim chain Take-up for mining machine trim chain

1976-10-13

1978-03-21

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Vertical cutter tooth orbit

742421FP, 7424214R, 299 82, E21C 2550

Patent

active

040800016

ABSTRACT:
An improved trim chain take-up is provided for mining machines in which the trim chain extends around the rotary cutting auger and the auger support arm and is driven by the auger to cut clearance for the support arm. The take-up includes a yoke slideably mounted behind each auger support arm in guide means affixed to the machine framework, and supports a cylindrical idler roller in a manner allowing free rotation of the roller. The idler roller bears against the inner side of the endless chain loop and tensions the chain when the yoke is pushed away from the auger support arm by push means mounted either on the frame or integral with the yoke. A locking device in the embodiment of a self-actuating wedge shaped spacer is included with the take-up to be positioned between the take-up and auger support arm to prevent the take-up from backing off even when the push means relaxes.

REFERENCES:
patent: 2937015 (1960-05-01), Jerrit
patent: 3722317 (1973-03-01), Johnson
patent: 3844618 (1974-10-01), Delli-Gatti, Jr.
patent: 3934361 (1976-01-01), Johnson et al.
patent: 3950031 (1976-04-01), Krekelen

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