New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1868-01-14
AMERICAN INSTITUTE PoLYrEcHNIc BRANCH

AMERICAN INSTITUTE POLYTEChNlN
AL ne last meeting Of tie foytenchino
Branch of the American Institute, Dr. feueht""nscr
bibited a specimen Of Tungsten steel manufactured In
Austria iron Wolfram ore II Is very close
grained and extremely hard 10 suitable fOr u cutting
Instruments &c. and Tor ass-'u'ng 10 S
equal to the ordinary glaciers diamond pr r. also
vbibited specilnen of Tungstale Of manganese from
Tado The exhibiior remarked that the Tungstale of
soda is very extensively used ~ me auiuiics VI
london and Paris TO render light wearing appaci ico
bnstibe No balledancer Of the Queens Ineater Lon.
dom is allowed TO dance IN garsns "mv i mn h,opc
been saturated with solution o JnS discus
on on the preparation Of tho Bessemer steel followed
at the cose Of which Mr. D. w Bradley Inc .y t,o
much valuable information 70 horoloeists nn,iquTe ,
engineer ana 81, snboprgs and the yibra
ton O. penduums aud An oecasionaI lenPoial ~
lowing bfef extracts win gave general idea Of the treat
prepared by Mr.. Bradley for his fellow members
With all due Difference to the philosopher Who sald al
time is money wOuld observe that time u improve
eu progress science. art and on the other mann ~
deneS d,sPa2 me- gSTSr ,Sa, bSVe been expert
neuug with IL these thirty years ana have never euc
seed SddT In sSSg Tt S. Pan The bc wa.
new yesr axe Tho old got cracked ana they set
fo and nearly froze TO DEATH and when lie flushed his
work IL found that the crack was AIgt lhah tNtI
before 80 they put in new bell The frame OF ihe
aud four feet high The pendulum i OF wood Is ieet
ST. Johns clock was built BY Henry Harris Iondon In
ls2 1t IS nearly similar TO FL r.us s e po''of III"
The clock Of tho Dutch Reformed Church Fhha'e.
nnd Twenty are b Si Ike the coi Of 81 Paa
though smaller and better. StOkeu made some OF the
bet ny ces t ts hsa1 in America The frame
stands feet long, high. and Wide The barrels are -
inches turning three Times n - hours. The winding
wheels driven by pnion and arbor on the latter Is
placed Jack. or wheel paion and crank so tafns
IL feet OF Sneh FOR the three cords ana INC
winding up OF the weights consumes more than an heur
~ me nd
lum Is IS feet long and makes % bcats ! eahno. tnh
that Mr. Rogers had correct notion OF what ne was go
ing 10 DO when he begun the building of ms CLOCK.
AT first II would not run ? daya ana ne was
Last fipished ard an agreement made with the sex.
toms son that no should receive q cents whenever
times day, te expense Of feeing NO inforner became
In new hands BY this time It had galned poor repnta
ton which clngs to u even In our day The weights
feet large box Is placed at the bottom Of the well
which holds about babe Of cotton waste 70 SsSs ago
wound II up Saturday, and on sunday mor MORN, S;i ~"
Ginning cord broke, letting the 200 pound weigh, u,o
Yss e. s wi bracc1 n s but the force OF tho
otherwise tho organ bellows, just IN line peow w1ua
have snHss %s to eIert upon
them A much better clock could be built OF the ipe'i
tbG In sdes g isep accurate time Trinity does
host the clock Of tho Dutch Reformed Church nS1t
the c6cK.room Of St. Pauls blown open The snow
DOWN into the box to the depth Of see nearly
covering the BALL. yet the old pendulum weded through II
with the glee OF schooboy. and slowed the this
side and hat and pelted It With such pernacty that by
the next morning the clock was IS minutes ahead Of time
The first warm day that followed IL tainted and stopped
running There was old German clock on the Post
Office but 1t was removed long tilno aso. 1t had but
oH II smaller than the others. but has gained repu
taton for accuracy Twenty years age y Tna h3
not st. Georges time was to be pnlled down no
e esTs tshe ns of az s inside and figures CT dial OPP
stv Mt
long vibratcs in seconds The bah weighs 800 pounds
To counteract the effect OF heat and cold the cOmpensa
ton principle has been applied TO hs pendulum. The
contraction Of the iron rods which would draw up the
s RSsedI BY Inc aeG down. S 0 Wnen
the rods expand greater expansion Of the brass bar
let's Il doynG;sy I. dont-that ls not yet regulated
from June 1906 TO February 1861 without moving the
hands but after the latter date for three or four
ceeded 80 seconds The pendulum has not vbra
ton In than two years The new clock OF ~
Georges siIteenthst has never been excsIled IN nsn
The frame feet long wide and high The main time
wheel is feet In diameter has 100 teeth turns once IN
u hours has the figures ON ito wheel Is ~ inches ban pSo
teeth revolves every hour and mas inc minutes on US
face The third wheel turns once IN rhsee dnhnu ss
feet long and vibres In three seconds ana the bali,
weighing 800 pouPd Is four feet n Length ~ ssSsn
tute all tho machinery OF this clock Trnitys has nye
pnions and ten wheels duplicate OF this clock now
Siocfs N Il the Brck Church end st. Thsrese
small but good ones attended TO- nes ae nsTea 1rr
Pennsylv was lately telling me aDou, ns "0nusnin
oSpe @ d 70 be observations he in the habit OF
taking he remarked that he took observations every lay
clock Of the Thrdavo. Railroad depot is fine initru
ment 1t is exposed TO greater range OF heat and cold
M Bradley ss wound up his with tmeS al
fusion 70 Solomon and wa: followed by Dr. Pretsrre who
graphing, after which the Section adjourned.
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