The Hazel Green herald. [volume] (Hazel Green, Wolfe County, Ky.) 1885-19??, 1892-09-30

viock which keeps sidereni or 40,
ume, lie then consults a printed table
when shows him at Just what tIms
each star must have passed. and nv ~
much as this time differs from that "a,
corded by the clock the latter a wronr
anu IN that way the sidereal clock e.
seguiated. This star time Is then re.
uuseu 10 sun time, which REQUIRES some
.S'cuiation, as there is difference be.
tween the two Of about four minutes
each day. a sldereal year consisting ~
Just one day more than solar wear.
4 hese two clocks-the one keenip,
star time, and the other sun tip,e-Iar.,
Oh very hne quality. and are as near
perfection as possible. Although they
cannot help being affected by changes
VI temperature and different condi.
lions OF the atmosphere, they very
rarely are more than fractional part
Vi second out of the way. No at.
tempt is ever made 20 correct such er.
rorS but they are carefully noted and
allowed for in making calculations
for the purpose of distributing time
third clock. known as a transmitter.
Is used. This is set To keep time by the
seVenty-hfth meridian, and is rerulat-
ed by the standard clock before men.
TONED, IL is, in all respects, similar To
'he other clocks, except that il has at
tached TO 1t an ingenious device by
winch an electric circuit may be alter
nately opened and closed with each
oeat of the pendulum. This clock con-
trolls such circuits, one of them being
used for dropping the Washington
tlme-ball, and the other one connect
ing with the several telegraph instru-
ments, known as repeaters, which
stand on case near by. These instru.
ments in turn connect with the tele-
graph company's offices at Washington
and New York, aud control the Wash
ington tre-alarm circuit and the OBJ
servatory clock line. Bv means OF the
former the alarm bells in all of the fire.
engine houses in the city are struck,
the horses unhitched and the doors
thrown open. all by single spark of
electricity, just as is done when an
alarm OF fire is sept in; for the noon
signal to the engine houses is used for
the additional purpose Of striking the
alarm for the daily practice OF the fire
department, The observatory clock
line connects with the several hundred
clocks in the government Offices and
buildings, including the white house
and the capitol, and sets them 10 COR
rect time at noon by means of simple
mechanical device in each clock, oper-
ated by electricity; so that, whether
clock loses o. gains during the twenty
four hoursy-its hour and minute hands
spring 10 twelve and its second hand
To sixty.
A few minutes before noon the trans
mittcr is compared with the standard
clock, and il il is not found 20 be exact
ly eight minutes. twelve seconds and
nine one-hundredths of n second ahead
of the standard clock that being the
exact difference between Washington
and standard time) it is set right by
making it gain or lose, rs the case may
require by quickening or retarding the
pendulum with gentle touch Of the
finger.
At tfty-siN minutes and forty-five
seconds after eleven, verythiug being
in readiness, "A switch is turned on, and |
the next instant the beats of the PEN
dulum begin TO tick the seconds on the |
telegraph instruments in the Washing |
ton and New York telegraph offices.
At this signal all work on the telegraph |
lines il AT once suspended. and conncc- |
tionS made from one Office 10 another, |
from town To town, and from state TO |
state, until the tick, tick of the clock |
NJ Washington is heard in the telegraph |
office Cf every railroad station, town |
and city in the United States.
Every twcnty-ninth tick is omitted, |
because there i, no signal goes out NJ
the twentv.ninth second; 50 that
pause of a second signifies that the next
click of the instrument will mark half |
a minute, or thirty seconds, and the
first click, after u pause of five seconds,
indicates the beginning OF minute, rs
.hc ticks corresponding 70 the fifty
fifth. tifty.SiXth, hfty-seventh. fifty
eighth and tifty-ninth seconds are
omitted. In order 10 distinguish the
asst minute. and afford time for maxi
NJ connections with time balls, clocks,
,tc.. the signals stop at the tiftieth sec.
md. or ten seconds before twelve,
Then. precisely at noon, the instant
he sun crosses the seveuty-iifth
meridian, the signal is flashed over the
wires, there Is n single throb from one
md OF the land 20 the other, the tele-
yraph instruments from Maine 20 Cali
ornia give n final click, the time-ball
IN the building Of the state, war and
iavy departments drops. and, stimuli
aneously with il time-balls drop at
havana, Cuba, and at all the promr
tent sea ports from Boston 10 New
orleans. those on the Pacific coast
,eing operated by branch obserya.
ory In California, the hands of every
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