TM 9-243
TYPES AND USES - Continued
PORTABLE ELECTRIC DRILL
The portable electric drill is basically an electric motor in
a metal housing (1). The housing is fitted with a
“chuck” (2) into which a bit (3) or other attachment can
be inserted. The portable electric drill, although varying
in size and design, usually has either a spade or pistol-
grip handle (4). The portable electric drill is basically
designed for drilling. However, by adding various
accessories it can be adapted for different jobs. Sand-
ing, sawing, buffing, and polishing are examples of pos-
sible uses.
PORTABLE ELECTRIC HAMMER
The portable electric hammer consists of a metal
housing (1) with a spade or pistol-grip handle (2).
A strong spring inside the housing moves a steel piston
back and forth in a pounding motion. The housing muz-
zle (3) is designed to hold a variety of bits (4) which give
the electric hammer great versatility. Examples of pos-
sible uses for this tool are beveling, caulking, pounding,
digging, and breaking operations.
ELECTRIC IMPACT WRENCH
The portable electric impact wrench consists of a
pistol-grip handle (1) on a metal housing (2) which con-
tains a motor that energizes the driving-anvil inside the
muzzle of the housing. Attachments (3) are fastened to
the driving-anvil by snapping them onto the socket
retainer (4). The portable electric wrench with its
accompanying equipment is primarily intended for ap-
plying and removing nuts, bolts, and screws. It may also
be used to drill and tap wood, metal, plastics, etc., and to
drive and remove socket head or self-tapping screws.
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