Sharp County record., 1881-05-12
The Railroad Tell -tale.-.A WOnderiIb
YentiOn.

An ingenious machine, called 1eav
"tell-tale," has been introduced ire.
Gently on the Erie Railroad, 1t req Th
ters the speed of trains. when out
where they stop and how long cad
is used especially for freight trains Ind |
is fastened at either end of small Fo
booses or at the side of large caOOoansil
about four and half feet from the Hoeran
1t was adopted because freight tnorod
frequently exceeded the prescrlbed1 ID Fli|
of speed. They would run very faanwen
some distance and then take things Gsan
forrabiv for a time. ST,
The machine works as follows hat
screw is wound around one OF tine from
nails or axles of the cabOOse. A age,
(which IS turned by the screw as Svili
as the train is in motion, runs hOrl'nriv
tally to the end or side Of the caooopse
to point under the registering nacllnore
To this rod a cogwheel is attacanu
working in another cog-wheel Wl-ne
turns a rod running perpendlcuN us1
and ending in still another cogg'8nsver
which turns a cylinder abouttourms13onou
long and one inch in diameter Du
number of cogs in each wheel varSor
that when the train has Travelled Dn1as
oito ~ 49, inne,o 80 % inob )erio
A strip of paper about twenIl'.u -
inches long and four inches IN pre-, ,10l
passes over the cylinder and hangs T,as
wooden box under. the cylinder pih' ILL.,
paper is called the conductor %smos a,,,,
report. Lengthwise it is dlvlaVu 200 -.
dotted lines into eighty-elgn1 riv ber
Each of these parts, which reprSs Ss,,od, n
a mile, is sub-divided by green NOV
into four parts, each SUBDIVISION '.s, 2n@
ing for quarter of mile. Dloagf7 Dlaf7 II
wise the striP is uIVIueu lliso s .basa @ euro
by green INES Eacn n Us VI ,n of coOack
represent a minute Dy i.'s" lnoo'D the usrock
work a pencil moves across Inc !.+kee !,
and back again, taking thirty lnn 81 nd
to move across and thirty mlna~J S~.Jbe
move back again. As soon as the STRAIT
or axle turns the cylinder turns -, q tioat
rate of a quarter men lor 0eJ eaOT tbs IN Man
that when mile is trayei1ou tray.pa .nss little
Gil has marked line over the SPSv one
tween the dotted lines WliOm pCar = MAKE
q mile on the strip OF paper grou}
clockwork moves the pencll oJ ai Ora take.
strip the pencil has also passeSu o's \ ssequd
many minute divisions as IL H'' "a mis-
the car minutes to run milo, has
train stops the cylinder stops. tsilos.
line made by the pencil in the ,lnt,, un ensil
of the length OF the paper Is ,La u, lin magi
long as the train stops, and tne a,s @
the interruption in travel is rePl''Ss
by the number of spaces !ho ho g.
moves across the strip before 1t \" n,;ds
the lengthwise line. .,spron
In order to ascertain the pom. Tber
any irregularity occurred, the s,,"IIasickp ,,I
on the road are printed on OF oor ~ -ex,
the dotted lines at points cofresP will
TO their distances TrUm I'D L:lft suits
Bergen is two miles and d n rnts be OF
Jersey City. Jersey City IS Pl,r PEara few,
the beginning of the strip anu ..,rtls ps riods
printed two and a half spaces iuts iha
the length of the strip. When a.a 'nI n j
stops the cylinder stops ana Wv .irs5r ande
line lengthwise is broken oe5Ts ss Of Of &! Il: |
printed names Jersey City ana an n aster
The cylinder and clockWor.A M sural
closed in an iron box which y his
When a train reaches its destllSJi stlnJl foun'
slip is removed and inspec'S"
York Sun,