Quantcast Machinist's Peen Hammers


or convex face and is known as a bell-faced claw hammer (figure 1, view P,
on the previous page).  Carpenter's hammers are issued in 7 ounce, 10 ounce,
and 1 pound sizes.
(2) Machinist's Peen Hammers.  Machinist's peen hammers are generally
used by machine shop personnel and auto mechanics.  Machinist's peen hammers
are made in several different styles.
(a) Ball-Peen Hammer.
The most common is the machinist's ball-
peen hammer (figure 1, view C).  It has a round ball-shaped head and is used
for all general purpose work.  Ball-peen hammers are classified according to
the weight of the head without the handle.  They usually weigh 2, 4, 8, or
12 ounces, or 1, 1 1/4, 1 1/2, 2, or 3 pounds.
(b) Cross-Peen Hammer.  The machinist's cross-peen hammer (figure
1, view D) has a dull chisel head at right angles to the handle and is used
for spreading or drawing out metal.  This hammer is issued in 3, 6, 8, 10,
and 12 pound sizes.
(c) Straight-Peen Hammer.
The machinist's straight-peen hammer
(figure 1, view R) has a drill chisel head in line with the axis of the
handle and is used for spreading and drawing out metal.
(3) Blacksmith's or Sledge Hammers.
Blacksmith's or sledge hammers
are similar to machinist's peen hammers, except that they are made for
Short handled sledge hammers are used to drive bolts, drift
pins, and large nails, to strike cold chisels when chipping and small hand
rock drills when drilling holes in rock.
Long handled sledge hammers are
used to break rock and concrete, to drive spikes and bolts, to strike rock
drills and chisels, and to drift heavy timbers.  The handle is usually made
of the best grade clear grain hickory, ash, or maple; completely free from
defects.  Some sledge hammers have a double face (both sides alike) (figure
1, view E),  cross-peen face (figure 1, view J),  or straight-peen face
(figure 1, view M).
They are made in sizes from 6 to 20 pounds, having
handles 30 to 36 inches long.
(4) Bumping Body Hammers.  A bumping body hammer (figure 1, view L)
is used for straightening and bumping metal.  The hammer shown has one round
and one square face and the head is 4 inches long.


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