USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 2/TASK 1
b. Types of Bars and Mattock.
(1) Crowbar.
The crowbar (figure 54) is made of high grade steel,
has a slightly bent wedge point at one end, and tapers a little throughout
its length. The wedge end is used for prying or for moving heavy timbers
and other objects.
The blunt end is used for loosening rock formations.
Crowbars are available in 4 and 5 foot lengths, with diameters of 1 or 1 1/4
inches.
FIGURE 54.
BARS AND MATTOCK
(2) Pinch Bar. The pinch bar (figure 54) has one end bent slightly
to a chisel or pinch point and has a tapered point at the other end.
Another type has a pinch point at one end and a claw at the other. Pinch
bars range in size from 1/2 to 1 inch in diameter and from 12 to 36 inches
long. The pinch bar is used in general as the crowbar is used, except for
lighter work; in addition, it is used to pull spikes and nails, and for
light prying.
(3) Pry Bar. The pry bar (figure 54) is 16 inches long and has one
end tapered to a point. The opposite end is offset 90 degrees to the bar.
It is a combination aligning and prying bar. The tapered point can be used
for lining up work, and the offset end can be used for prying out gears,
bushings, etc., since the offset point provides a great amount of leverage.
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