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FIIG:  T317-E

Entry Date:  Apr-01-1974

Concept:  1

Status:  A

Applicability:  EA

Type:  0

Definition:  A drilling machine having the drill head mounted on or in an arm attached to a vertical column. The drill head may be mounted in a fixed position in the arm or attached by a geared mechanism to adjust the length of the swing. Excludes: DRILLING MACHINE, RADIAL, SLIDING RAM and DRILLING MACHINE, RADIAL, FOLDING ARM.

Basic INC:  70561

Basic Name:  DRILLING MACHINE

Description:  1. (Machine Tools) A stationary or portable machine having rotating spindle(s) designed to hold cutting tools which are fed through materials. The machine is fixed-in place to a floor, bench, or other foundation; or is so designed that it must be carried to the work and affixed thereto to operate. Excludes: hand held power driven tools. 2. (Well Drilling) A power-operated machine designed for vertical well drilling either (1) by percussion caused by the raising and lowering of a heavy, cable suspended, nonrotating drill bit and drill bit attachment, or (2) by imparting pressure to a hollow rotating drill bit and drill bit attachments through which a fluid is pumped to force the loose material at the drill bit to the surface during drilling operations.