New-York tribune., 1871-06-13
A PERMITTING CHR0N0CR4PA

This new apparatus for recording astrCnOm-
ical Observations is the Invention OF Professor g. ".
Hough Of the Dudley Observatory, Albany, y. =. II =
radically different from any Plan Tor accomplishing the
same purpose heretofore published being bsed on tho
principle OF using separate systems o. mechanism for tho
mhu,eS and seconds, regulating each VITA ceetr-n =
controlled by standard clock, 1Ae inventor hd
a,tuav atcUmpls ed what ha, hitherto been deemed
impossible; tBat s record divisions Of lm minute
ID, Il nuudreith ot a secold without sen5iny affecting
the regularity OF he movements tue tinc-pcce For
clear undo l5tdL- Ol tac ~ ecil.lsi, . Nla hVu-.
be necessary Is novel textures NAV, however, be
bri, y noticed follow: a. system cf ciOck-Voik,
carrying ype-Whcel Wlt % members enIta r, revoy-
Deue always printed, that LundreGtns oi SECONDS may
be Indicated Tnls train Is primarily regulate ed 70 move
uuiiorny Dy Jnc FIaucnhauer friction b1s, ana sec
onlaily by an eccr ya-ies aclll on iLS
train is entirely independent, ana can he stopped az
pleasure, without lt -relihS with other tpv-Whees.
snIts, carrying the type- e,ls indicating the minutes
and The moOn Of this train j. al>J governed
Dy aA eccrOugnc oontrO led by Tue standard cioyk
Hpe" - 80 90 & % - as =, "a a., -..ii5 lii ~ &C. '-, - u
seconds, and GIudredtA of seconds The nieger num-
,,,.T I'D tbe r,iui,to 9t te end Of . cb com iete
reyou oil tue seconds wheel. Tho ypc-Wheels
constructed OF dis around the circumference Of
which j. sUdced stlip vi CeCttOiypo copper, LoidIng
After long series Of ex7oIlments, durlne which the
fasnoylnG wheel detached aud stopped in various
ways ,ie hnrli aae the imprssion from tia
spring o. the hammer OHly, no, ali wing te U 20 il
before reached tle top OF the type. By this device
which is regarded Oi the greatest Importance, the motion
OF the type not disturbed 10 any apPIeciabe extent
Any number of impressions following each other in
ail succession does not disturb the fastnoving wheel
ole-nldredh part OF second. By this plas none u
the type-Whccis stopped, Or locked IN the act Gf
prntidg and records of observations may GLOW each
other The hammer can he m3t, o. uriivcr tbe
blow. Tnc types uked by means ot suail rollers,
covered with C.uth resting against tie r and revOy
| ing with the wheel by friction. The paper 1.ct,
two inches In width, is wound on a spool holding
| about 30 feet, aud drawn between two rollers,
in Tho -i.-- p-0t-4r; :, viii hold about 1900 CbseI
yations The blow for printing may be struck directly
by means of strong eleCiO-mag guet but the cost or
Keeping up large patie" led the inventor ~ DO al tls
work b. running gear which VIII deliver 90 blows With
one winding; 4at electricity Is only used as the g"Y-
crning power. Tie battery power required TO operate
this printing crOnOa ~ ine same - Tor te Ordinary
chrunOgaph Three Grove cicnenS or SIX Hll clements
| work the elecirJ-Hlgrets vel. separate battery
about the used for the nfmn'r ana hlets
TIE saving o! and labor In e Use OF the new Hp-
plraus /. cons .erabie. Ii zone work at the ooacrNa-
tory formerly when the extended two hours IN
right ascension IL usually iured the labor OF two per
son, whole day to convert the cnOAOgrapIlc Signs INTO
numbers, and copy them In blank forms. Wth TIE oO-
ervatos printed the LABOR OF copying can be done BY
two persons IN two hours.