Hammer for breaking strong abrasive materials

Details Hammer for breaking strong abrasive materials Hammer for breaking strong abrasive materials

1979-10-16

1981-02-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Percussive-type cutter

173131, 173DIG2, 279 1Q, 279103, 299 92, 299 94, E21C 3724

Patent

active

042511135

ABSTRACT:
A hammer for breaking down strong abrasive materials comprising a body with a movable ram reciprocated by a drive and provided with a socket accommodating a tool intended to break down the materials by impacts during reciprocation of the ram. The end of the tool shank and the contacting bottom of the ram socket have the shape of matching spherical surfaces. The side surfaces of the tool shank and ram socket are separated by an elastic gasket and are made in the form of truncated cones whose larger base faces the working portion of the tool and angles of their cones are smaller than the angles of friction between the adjoining surfaces, the end of the working portion of the tool being provided with a blind hole which ensures better penetration of the tool into the material being broken.

REFERENCES:
patent: 882520 (1908-03-01), Gilbreth
patent: 1062790 (1913-05-01), Mowlds
patent: 1174433 (1916-03-01), Mowlds
patent: 1559709 (1925-11-01), Knapp
patent: 2161062 (1939-06-01), Killgore
patent: 2789653 (1957-04-01), Fannen
patent: 3618683 (1971-11-01), Hughes

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