Mining drill with apertures and collars providing for flow of de

Details Mining drill with apertures and collars providing for flow of de Mining drill with apertures and collars providing for flow of de

1982-09-29

1984-07-24

Purser, Ernest R.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

175406, 175410, E21B 1710, E21C 900

Patent

active

044613628

ABSTRACT:
A mining drill mountable in a holder of a drilling machine. The drill includes an elongated shaft having an internal bore extending longitudinally therethrough. A cutting bit is mountable on one end of the shaft and includes a cutting tip mounted at one end thereof and a plurality of cutting teeth disposed about its periphery. A partial longitudinal bore is formed in the cutting bit and is alignable with the bore in the shaft. An aperture is formed in the cutting bit in communication with the bore in the cutting bit to direct debris through the aperture into the aligned bores in the cutting bit and shaft. A collar is mounted on the shaft and has a downward-extending inclined top surface. At least one aperture is formed in the shaft adjacent to the collar in communication with the interior bore in the shaft to direct debris into the bore. A cutting edge is formed on the bottom of the collar.

REFERENCES:
patent: 1770207 (1930-07-01), Helmling
patent: 2361683 (1944-10-01), Greenberg
patent: 2495073 (1950-01-01), Morris
patent: 2607562 (1952-08-01), Phipps
patent: 3313364 (1967-04-01), Binkley
patent: 3667768 (1972-06-01), Stokey
patent: 4073354 (1978-02-01), Rowley et al.
patent: 4099585 (1978-07-01), Emmerich

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