, 1869-11-26
THE ATMOSPHERIC BRAKE,
Experiments with the apparatus on
the Northwestern Railway.
How tho Work Is Done.

I'm "wednesday evening last, special train be
Logging TO The Penu1 JlEana Central Rsl.rpsd, COZ
tafnluR ktx GlIt'clAkR pessetger coaches and a k
conot1ve, arrived In Chicago from Pittsburgh
bearing With It = patent atmospheric brake appa
ratus, Tor the purpose Of tess1oR 1hch the excu,
Zion Wna msde. The invitation Of Geo 1. Duular
General superintendent Of the North wearern Raj
foad to usc that road In ruEkInx the test, y8p nc
cepte1, and JtslefdaJ afternoon The tfsiu left th
Wells street depot for a short TIP on tue Gslen
Division. About nttJ gentlemen, including man
CT the leading talT.y officials nf the city, were Ii
attendance, b. Invitation OF MI. Thoa !. Ktn.ball
S!tnstn !;tss Western fssssnaes Agent OF III,
Cd 10 The details o. thu e1peoiIou, n,
following gtntleu en- were Of tsrp,rty: Geo /,
n1n.ap, q: X p1eFson. Il. ". Blodeets, j. c
I. E Fzrnhan, a. S Vac M,iiusp, f' I'D Messts n
Gray ana Fth, OF the c. L n. ". t. b. i Grs5
General Aapsser, y: W. core, superintendent.
e. Soott. Norhwe est cru Passenger Agen1. pst
Handle Route; L; Phillips. G. T. uxtco, G E
rhpe: L :; N r. Il Il. sasKsas, u. C
y. G: cltian6. n c Meidron, r. Fl II. I C. r
= = k1test rtcairc, bir.t1on sape1' ateuoeni +.
=, s, h,nnal Western Passenger Agent. and J. q,
iooseo5' Assistant nsnIs rnasssnser Agent, Psoa. c.
E, i l. +. n r; Roesis tsse' En@sa aasas
ppao Kss's 4 is'f:i Gssa. u
tu1lters; ]. Il. Stewart, superintendent, aud j,
4. Msao, General Ticket Agent, IT. i St r. Z. L
The train iett the depot at O'Clock, aud with
u. ~ CATE. dsaHn BY The na8siye PeunsJlva vania
ceDtiEl locomotive, under the handling Of euxt.
nttr Richard Clay. sped sWtltlT ~cstwa1d. Sew
eral tlues. bile uucer f1Il head xay, the braee
was applied In refpeute to puil OF tie stgna
rope, Wten, almost before one had time to look
aso1t him, and without any terAin2 Of sliding Of
seoai TeeJ s @s Tsal q
t!onsts sllghled and gathered along the track and
we uatn *as then bacled up mile ID ordet
that the PRACTICAL vorksng Of ths sppasatus
start. the train came on at speed Of Aoout thirty
Two miles IN hour, and when Abreast OF the pA{1y,
81 even slRna!. tue engineer applied the brake,
Hs tcogtn time, lesG<annds fro1 the Instant the
brake Wss applied. The Track, 1t should be oo-
sefssa, Wa vet nd slppery. and uniaroranie for
~an Packed up, This time tTo miles, aud came on
time i was Stopped W1thiu nf:y fres OF its oEn
WITH xafn eIpreAnons OF delight aud nppsoyal
~ the enthusiastic railroad men present, wh de-
claEed thai the t1attng ur ot train Of stx neAvy
palsepQtr carr aEn LOGON otIve, weighing thIttJ-
cant tons, Wlthln lis own length, was thing a.
n.ost n!Eacnlous,
The stmo-pnertc b1ake, Which is the Invention
briefly described a. follows: "a The rtxht hand
soc OF the locomotive, fa4tencd TO the running
oeaId, and immediately under The engineers esef,
te IN upright uIccL acting Rlr-pump which Clra 81
~ supply o! ateAm from the boiler, aud pumps ali
VITO reservoir, Which - attached to the foot
hoaId and u directly under the cab. Tuts pump
u entirely SELF act1og, and Is really metium he
t~een the pressure Of steam In the boiler and sne
pfessnte OF air In the reservoir. Whcn the pres
sSle o. steam raes thereby 9.sicg Lore poxeF to
sq non sas sSs'aeer 70 'spSy spSy
sne san, xa1s,n,, a1r, tne sorop prm1 :. oocs b.
ilom The uRnecr, 10 msIe mp The deficiency Of
pressure 1n The ftterrotr, caused BY Supplying tue
brakes: i tacn works or nn'lI lhe steam aud air
preeenses are The sAur, iess the allo sAnce Tor
if1ction IN the pump The QusnfitJ OF steam used
10 pumping the air u scaEceJ perce2.tbie nad tue
siae nese.tsry for the pamp 70 restore tne pres
cat Of The train Is q Under nsrlF botted In snch
= rotitttp TINT the piston acts directly On tue
lever. noT ~ nscd tor tne ordinary nand-o!akes. BY
This ARRANGEMENT does not At ali lnterfese with
h1i.a -htaktog.
deIs from the Ieservolf under the locomotive BY
line OF Inch Ras pipe running the entire length or
the tra:n, ard the connection with each cylinder
= 'fn mace len 10 the ~, maq q ne vim
1chdet BY thrrcsrly rubber bose, which arc.con-
ntcted when the car1 orc coupled together by
,nas When ,he Two parss a.e un,se.t ;hs ar ossses
neely throuRh ttem; but should the cats
tcone de'achtd !som aoF cause, lhs coup
taeI r"tA = utIu tQEeLutl O{ kuu EpHnGat
would pull ara1t, The vhlve Close, anu lhuJ
Iencff the brake auu effective on the
balance OF The ualn' or shDud the brake
hare teen applied AID nitesHnrat cur b4cons
d-taehef, tie vslsea would Immediately cio.e on
the detacned car and The brake coptlnle applied,
tnas lesels1 the car from runotng hack on
grate. 4 doaole set OF coupling Is supplied for
ute In cate The car btuu:d BE- turaeai end for end
! he entire management Of The train Il IN the
hnLds Of Tue engineer, who cat. By the simple
tnrn'rR OF thrre-way COCK, icstaptiy aud etIeciu.
ally stop the train tsltnort that unpleasant jerk.
ing and bounding totctane on eli tIa,ns where
hard or other brakes ate brought into rrautsitt,o.
Or eau as quickly Et.t ase The trRkt, graduate il
to snJ dGAici speed.
TIC atmospheric p1ake cau te 40 a!Jn1tei that
1t chn be spilled with the Utmost fosce, anA, IN
cate OF ocrietnt, The epRiceet, vita ztinple
mot ereLt cf The hAnl+ can lWDs diAtelT Apply the
same, aGd JET Il II rusklb!e Tor him to get such
force as TO hseak anything. or even lock Or elide
The ehtr!e. The BRAKE Is applied Instantly 10 all
tue csEt lhtuuRhoat tue uA,n allie, TO that in
r1rLltg into aa obssructlar, The train would be
rerEetfy rhut, sno cpuJa sihrd a considerable
hloM. or n c2te u al anticipated eollIsGD, nfier
ktorp'LN The if17, The brnle could be itnpettste-
~ tlsastd A. d the ts.ln backed out Of danger At
OF &C.
After favipR fully e1re simea,ed with the appa-
fatus, the cxC1f&IGn parry returned. felel!D1 the
C!:, At s:3u p. o.. ard IL Lighiy 1lcased VIII the
TRIP Al 4 It's feBCits-