Pneumatically actuated horizontal drilling apparatus having a pl

Details Pneumatically actuated horizontal drilling apparatus having a pl Pneumatically actuated horizontal drilling apparatus having a pl

1987-06-12

1992-06-30

Eley, Timothy V.

Tool driving or impacting

With vehicle support for drive

173 35, 173 52, 280638, 175202, E21B 702

Patent

active

051254603

ABSTRACT:
Pneumatically actuated horizontal drilling apparatus includes a base frame with a plurality of horizontally extending drills adjustably secured thereto, and the base frame and the drills are pneumatically actuated on a selective basis. Horizontal movement of the apparatus is accomplished by a pneumatic motor, and movement of the drills, both outward from the apparatus for drilling, and inward from the work for retraction, as well as rotation of the drills themselves, is also accomplished pneumatically and selectively. The drill apparatus is maintained at a predetermined distance from the work while drilling operations are taking place and while horizontal movement of the apparatus is taking place by means of canted wheels rotating in the vertical plane and by horizontally rotating wheels disposed against the work to be drilled.

REFERENCES:
patent: 4051351 (1977-09-01), Mallick, Jr. et al.
patent: 4589499 (1986-05-01), Behrens

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