Juniata sentinel and Republican. [volume] (Mifflintown, Juniata County, Pa.) 1873-1955, 1880-12-01
About Filling SaWs

The sll-absorbing question OF the
present day among mill men seems TO
be, how can we run thin sawsf Now,
the practice of many filers Is to use
beveled face, or beveled backed tooth
or both-claiming that IL cuts easier
and runs straighter than any other.
Having learned this when young, they
eoncientiously think that 1t is all so,
and as 1t Is very difficult for most to
file square tooth, they stick to the old
oevel, and Will not try the square. This
Is their practice, and this class of men
number about one half the filers. In
some sections all filers use this absurd
Old-fashioned tooth, which practice
has already said was wrong. We will
look at this phleme tooth in a theore-
teal way. 1t is well known fact that
all hand-tiled saws get "out of space"
that is, alternate spaces between the
teeth get wider than the others, conse-
quently, the teeth following these
spaces have more work to do than their
fellows, and as each draw outward, the
teeth having the most to de-and they
are all on the same side-will pull the
hardest and the saw be drawn that way
just in proportion to the amount of feed
carried or the work done, and no amount
of hammering, tinkering, or grinding
will prevent this continual pull and
hard drawing, so long as the phleme
tooth is used. Then we will look q
little further and see what theory has
to say against this beYeled tooth. The
iler must give his saw ali the set ne
cessary TO clear Itself upon, running
on slow feed, and when forced to carry
heavy feed, The teeth will be drawn out
ward all that they will spring, increas-
ing the width of the cut from one-six-
teenth to one-eight of an inch, although
the saw may go perfectly straight. This
condition of things will make the lum-
Der thicker AZ one end than the other
and as The saws are generally star ted
In on slow iced, which Is steadily in
creased, until the other end is reached,
there is a taper on both sides of the
board. Then again, when these teeth
run into hard knot, they are sudden
ly drawn in opposite directions, max
ing the saw cut wider and consequent
ly very much harder. This sudden
wrench has been the cause Of breaking
more saws than any other one thing.
Thara ORR raaSons anou.rb why a man
vino tiles phleme tooth cannot run
thin saws, because they are more sem
sitive tnan thick ones, and show the
defective fitting more readily, and no
iler ever fitted thin-if hammered
right-with perfectly square tooth,
top and bottom, who coIld not run
them and do good work. At least of
the hundreds of mills l have visited d in
the last three years, have failed 10 find
one. II millowners would require
their fle=s 10 swage the teeth full and
heavy, giving them One-fourth Of an
inch side joint, with a comparatively
steady motion, 4 10 guage saw can be
run just IS easy as 6 gauge saw. No
man should ever use a taper saw, for
If it be tapered on one side and straight
on the other when standing, 1t Will be
iapered alike when running, as the
centrifugal force Will straighten it up
and put twice the strain On one side
that there is OH the other, making it
more liable 10 break. These theories
can be proven by any mill man, With
out cosI, in his own mill, and enable
him TO show himsit practical as well.