New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1852-11-13
NETWORK TRIBUNE.

yrous The sos,oa Journal
Nh. SLEEPER: In The Journal Of Oct. -
was eopied the following article from The Svisxfsa1
The Tsnsei Maosiae-Thc boring machine ., HoosAc
Mountain has done nothing last notice, several
made complete qeraf'ss rvvOluon There has been no
attempt 70 worn n save two OCCASIONS for the
srsthcscon OF one visi,os the frs, experiment
Why we know not"
greater number Of mistakes il not often colnpres<ed
into the same compass
II should be borne mind thar the company who are
building this machine not working for the pubic or
the railroad company. Their machine Is an attempt 20
az ply 20 uGnnehng what Is known ~ Wilson's Patent
SioneCutters which have been several years success
fu operation IN the dressing OF granite frcestone &C.
IL l. a new application OF established principle I'm
der these circumstance would be very unreasonable
10 expect thar machine could be invented and put
10 work which should not require alterations suggested
By experience Al least this has always been sntct
psted by the parties interested and the result has shown
that their expectations were well founded.
They commenced under great dissdvar.'asc5 and
these disadvantages have had 20 be overcome step by
step. Among the dihcuues the following Sevcrsi
hundred tee. ofrock End eh excavation have sct 20 be
mUdc before entering the mountain For the parpose oi
testing the experiment. the machine is placed against
portion Of thu rock which sufficiently "a 70 form
a strong arch over the machine Ii has been found that
in blasting out the after the rim Is ca; ~ feet in
diameter, the hlat throws of both the core and the
arch OVER IT. besides lcosenng the stone, which tails
while the machine Is operating Tais has caused good
deal Of delay This difficulty viii be obvatei whom they
get into the mountain.
Another difficulty was that the machine had TO start
upon an artificial foundation, and bad 70 be braccd
sgsinst wooden tmhcrs fitted tor ele purpose Tnese
could not be made secure 70 prevent the osils
ton which prevented tho cutters from doiny their full
work. Ills diiculy has been obvated in part by the
fore wheels of tie machine having got upon the rock
which ii has cut which affords solid foundation, and
the means Of brrcin; against the rock Another deu
tyto wss TIE cutters were set too angling In
Consequence OF watch the OSCILLATION OF the machine
caused the edge cnnble Various exp 'rimcnts have
hpap IN the hest All theSa
matters and Ike progress hes been slow the parties
concerned feel that il has been sur. Various kinds OF
steel with different delrecs II temper, have had 20
dergo thorough 'c.r. until the kind which viii do the
work has been at length found This Is the great point
gained. Repeated experiments have been nate, when
the cutters have progressed At the rate OF 10 70 ~ inches
per hour and less than ~ nche. per hour This
factbong established slother parts collateral They
can be altered strengthened and adapted necessity
and experience shall suggest
There arc still aiera ions 20 be made which viii cause
delay One Vs. the soC ks attached to the wings which
extend from the aTg wheel and hold the cutters against
the rock Tie present ones are made OF cast ron ana
il pruposed to make new ones OF wrought iron Ger
tain bolts have also got To be chanfed when nave caus-
Ell much difficulty account of the unscrewng OF nuts
by which they were secured. The machine runs upon
bars OF railroad iron, and its great weight causes them
10 bend New, and larger once made for the purpose,
have cot 10 be procured
IL must be collected that this is to all ntons and
purposes n model machine; no smaller one having
teen built Ia experiment with snd improve upon, as s
usual IN such cases There ten cutters on the ma
chine and each has been experimental with seps-
ratey, until liz proper position and temper has been
ssceitsned The object OF the OPERATOR therciore has
net been 10 see how far how fat they could advance,
but before doing s to perfect the various parts AZ
vet they have nothing TO discourage but much to
encourage the idea of It's accomplishing what they
propose.
When il ia recollccted that the machineshop h In
This city, and the machine 25 miles distant, must be
seen thrt the work OF altering and adapting must be
slow These explanations are given that those inter
estcdmay know tomo Of the reasons To! delay.
Yards are being established I'll the country Tor
the burmese o. Introducing sonecuting m ,chines"
Eight of them in operation in York City, dress
iur freestone and the average work OF each machine
from the commencement has been 225 square feet per
day. days woi for 20 dress tho same kind OF
stone from ten to twelve square feet per day. each OF
ten hours OF Quincy granite. an average days work
fer orc II tive square feet, while Wilsons cutting
dresses l00 square feet in the same time
Facts like these have given ise to the belief that the
principle can be- applied 70 'unneling with the
sfmc relative gain over the old mode OF hand drill
ing c.