Mining machine bit and mounting thereof

Details Mining machine bit and mounting thereof Mining machine bit and mounting thereof

1978-09-20

1980-05-06

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

299 92, 37142R, 175354, E21C 3518

Patent

active

042014212

ABSTRACT:
In a mining machine which incorporates cylindrical cutting bits having conically shaped heads and located in sockets of bit holders, the cutting bits are retained within the sockets by split tubular spring sleeves. The split spring sleeves are located on the shanks of the bits and resiliently engage the inner surface of the sockets thereby securing the bit in the mount. The bit is free to rotate and the sleeve interposed between the socket and the bit prevents wear on those parts of the bit and mount.

REFERENCES:
patent: 1723381 (1929-08-01), Seifert
patent: 3397012 (1968-08-01), Krekeler
patent: 3498677 (1970-03-01), Morrow
patent: 3499685 (1970-03-01), Kniff
patent: 3512838 (1970-05-01), Kniff
patent: 3519309 (1970-07-01), Engle et al.
patent: 3663063 (1972-05-01), Johnmeyer
patent: 3752515 (1973-08-01), Oaks et al.
patent: 3865437 (1975-02-01), Crosby
patent: 4084856 (1978-04-01), Emmerich et al.

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