The Dallas weekly herald. [volume] (Dallas, Tex.) 1873-1885, 1884-03-27
Huge Circular Saw..

The largest circular saw that has been
sent out oi this city recently was exactly six
feet Ia diameter. Il was ordered by ama,ch
Company and went 10 Michigan. Fllty-two
teeth projected from its rim. IL 10 nov re-
vslvlGg al the rats OF 672 revolutions mn
nte, and Is capsule Of making teG-iBUh TO
tWelVe.inCa cut with each revelation. l.
can Jaw of = forty loot plank, therefore, Ia
al iuhuiueslmul portioa Oi minute,
enough a. matter OF fac. the franc on
which tue logs are fed TO the baw IL adjusted
20 move 10 ABOUT the soeed At which man
ca W-lk. A. that rata there is nothing but
% whirf end a shrek 10 announce the jouI-
nsy OF = logs length, Thisis not ssoiiu saw
or it would have more than one huudfed
teeth.
It 10 one OF the new pa.terss In which tie
teeth are separated from the plata aud can
be inserted and removed az pleasure. Toe
teeth "a the sort OF saw OF which this mGG-
eler IL specimen are httle curved bis of
sGeBl pointed like chiseis at the eating
end. They fit iaLO round sockets cut out OF
the edges OF Ine saw plates, and their Little
chissl blades project slighsly beyond tbG
circle Of tue plate. There arc various iu-
vantlonJ In movable teeth for circular sa~s,
and in hearty all of the them tho circle
playa 80 important part. IL looks purely
ornamental, but ia reality 1t prevents the
steel splitting with the grain.
-
NUMBER, but the inventors OF the movable
teeth, different patterns OF whlcl are made
| by all cav manufacturers, are deriving
| iOrtune,, because now teeth can be replaced
for few cents and ia a few minutes, and
the body OF the saw remains the tze it was
made, whereas solid saws have to he newly
6led aud set and gharpened every tine
they dull, process tina, consumes time
| anu requires ths services of q sawyer whose
skill coInmanGE good wages. Every cut
| tag reduces the size OF the saw. seven
| IJ-lwo inCa saw is big one, evel "a Mch!-
I gan, where the eiXgy.diX inch saw ig in
common use. There these five and halt
| foo. sGwa are run az speed OF from
; 500 30 100 revolutions III Norway pine
/ logo, end they cut as deep with esch
revolution IS he monster shove described.
| Ihe ljtsle chi,el-bi. teeth will chew out
pins during whols working dss and sn
| paCiIe Get OF duh ones can ha replaced neNi
| dts IN Ave minutes for 5 cents q tooth,
SONS OF the slFduSJ frous one Of these
| great SAWS wad sent trOu Michigan to The
establishment ,! great saw MAKER IA this
/ city. IL was eetersled a5 curiosity. IL
was net dust at ali, but mass OF little
pellets OF wood, threg-eights OF an inch in
| thiokueHs. The lumsermen prefer TO vast
iuuosr il tina way provided they get
speed out Of fhair tools. These haEe sEGs
are ueed Eiptly in sawiEE q rough log into
plxnks. AfIerG6td the plspks are reduced
to desirsa widtae By edger saws, which are
smaller implements revolving together al
thu proper dis xnees one from TIRE other.
A Bsv-mpker Wast know whsther or no,
his oustomer wants to run his purchase a
high raio Of tpeed before the saw - made
Saw makers, in developing disk OF siee
into q cav, hammer it SO a. 10 leave eithe
q hard or set center. A esw that hes ,
soft sspter will wabole in the middle IL {
person takes hold OF it by the edge ant
shakes II. II it has hard center one par
will not shake more .hsn another. A saw
with hard csuter, II driven at high rsts
OF sy,ssd, wll net cot straight. Its edge vii
WaSA)le, BxI IL H. has soft center, and Y
seat nrsuna at a rate OF 700 or 800 revolu
tisns miauee, tSe centrifugal force strain
ing At tina center stiifeos the saw and keep
tho edge steady. To tho average mind i
would seen thaJ thers has been the sam
str.tning after ornamental effect in the YER
tical sgwa 50 odd are the shapes OF the teeth
BuG here, sgain the study hiss been solei'
TO produce streaglh and cutting p VT
Sons OF the vertical SAWS have dull testl
altslnAtiug with sharp ones. The dull one
90 not reach out go fs. us the enters
Their putpose il 70 clear the sawdnit from
before hs cutters.