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.
Sanding, sawing, buffing, and polishing are examples of
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
muzzle (3) is designed to hold a variety of bits (4) which
give the electric hammer great versatility. Examples of
possible 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 contains 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 applying and
removing nuts, bolts, and screws. It may also e used to
drill and tap wood, metal, plastics, etc., and to rive and
remove socket head or self-tapping screws.